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/Problem16_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:50:53,447 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:50:53,451 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:50:53,464 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:50:53,465 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:50:53,466 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:50:53,468 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:50:53,470 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:50:53,472 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:50:53,473 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:50:53,475 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:50:53,476 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:50:53,477 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:50:53,478 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:50:53,481 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:50:53,482 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:50:53,483 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:50:53,485 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:50:53,496 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:50:53,497 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:50:53,498 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:50:53,503 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:50:53,507 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:50:53,507 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:50:53,507 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:50:53,509 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:50:53,510 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:50:53,511 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:50:53,513 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:50:53,514 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:50:53,514 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:50:53,516 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:50:53,516 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:50:53,516 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:50:53,519 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:50:53,520 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:50:53,521 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 17:50:53,550 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:50:53,551 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:50:53,552 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:50:53,552 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:50:53,553 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:50:53,553 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:50:53,553 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:50:53,553 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:50:53,553 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:50:53,554 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:50:53,554 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:50:53,555 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:50:53,555 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:50:53,555 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:50:53,556 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:50:53,556 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:50:53,556 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:50:53,556 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:50:53,556 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:50:53,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:50:53,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:50:53,557 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:50:53,557 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:50:53,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:50:53,559 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:50:53,559 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:50:53,559 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:50:53,560 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:50:53,560 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:50:53,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:50:53,560 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:50:53,561 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:50:53,561 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:50:53,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:50:53,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:50:53,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:50:53,643 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:50:53,643 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:50:53,644 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label02_true-unreach-call.c [2018-09-14 17:50:53,993 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99de47dba/fc7a5f5b75214091aebab176824db311/FLAGe97f8b5eb [2018-09-14 17:50:54,357 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:50:54,358 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label02_true-unreach-call.c [2018-09-14 17:50:54,380 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99de47dba/fc7a5f5b75214091aebab176824db311/FLAGe97f8b5eb [2018-09-14 17:50:54,401 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99de47dba/fc7a5f5b75214091aebab176824db311 [2018-09-14 17:50:54,413 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:50:54,416 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:50:54,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:50:54,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:50:54,426 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:50:54,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:50:54" (1/1) ... [2018-09-14 17:50:54,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43730062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:54, skipping insertion in model container [2018-09-14 17:50:54,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:50:54" (1/1) ... [2018-09-14 17:50:54,445 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:50:55,215 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:50:55,233 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:50:55,481 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:50:55,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:55 WrapperNode [2018-09-14 17:50:55,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:50:55,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:50:55,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:50:55,596 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:50:55,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:55" (1/1) ... [2018-09-14 17:50:55,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:55" (1/1) ... [2018-09-14 17:50:55,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:50:55,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:50:55,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:50:55,794 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:50:56,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:55" (1/1) ... [2018-09-14 17:50:56,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:55" (1/1) ... [2018-09-14 17:50:56,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:55" (1/1) ... [2018-09-14 17:50:56,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:55" (1/1) ... [2018-09-14 17:50:56,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:55" (1/1) ... [2018-09-14 17:50:56,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:55" (1/1) ... [2018-09-14 17:50:56,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:55" (1/1) ... [2018-09-14 17:50:56,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:50:56,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:50:56,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:50:56,256 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:50:56,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:55" (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 17:50:56,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:50:56,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:50:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:50:56,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:50:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:50:56,327 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:50:56,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:50:56,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:50:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:50:56,328 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:51:02,666 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:51:02,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:51:02 BoogieIcfgContainer [2018-09-14 17:51:02,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:51:02,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:51:02,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:51:02,673 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:51:02,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:50:54" (1/3) ... [2018-09-14 17:51:02,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71850ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:51:02, skipping insertion in model container [2018-09-14 17:51:02,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:50:55" (2/3) ... [2018-09-14 17:51:02,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71850ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:51:02, skipping insertion in model container [2018-09-14 17:51:02,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:51:02" (3/3) ... [2018-09-14 17:51:02,677 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label02_true-unreach-call.c [2018-09-14 17:51:02,687 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:51:02,696 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:51:02,752 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:51:02,753 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:51:02,753 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:51:02,754 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:51:02,754 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:51:02,754 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:51:02,754 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:51:02,754 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:51:02,754 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:51:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-14 17:51:02,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-14 17:51:02,800 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:51:02,801 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:51:02,802 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:51:02,808 INFO L82 PathProgramCache]: Analyzing trace with hash -730804356, now seen corresponding path program 1 times [2018-09-14 17:51:02,810 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:51:02,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:02,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:02,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:02,864 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:51:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:03,384 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 17:51:03,387 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:51:03,387 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:51:03,388 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:51:03,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:51:03,412 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:51:03,413 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:51:03,416 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-09-14 17:51:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:51:11,638 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-09-14 17:51:11,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:51:11,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-09-14 17:51:11,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:51:11,670 INFO L225 Difference]: With dead ends: 1513 [2018-09-14 17:51:11,670 INFO L226 Difference]: Without dead ends: 1097 [2018-09-14 17:51:11,683 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:51:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-09-14 17:51:11,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-09-14 17:51:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-09-14 17:51:11,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-09-14 17:51:11,878 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 68 [2018-09-14 17:51:11,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:51:11,879 INFO L480 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-09-14 17:51:11,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:51:11,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-09-14 17:51:11,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-14 17:51:11,900 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:51:11,900 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:51:11,901 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:51:11,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1744489539, now seen corresponding path program 1 times [2018-09-14 17:51:11,901 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:51:11,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:11,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:11,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:11,903 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:51:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:51:12,177 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:51:12,177 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:51:12,178 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:51:12,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:51:12,180 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:51:12,180 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:51:12,180 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-09-14 17:51:17,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:51:17,608 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-09-14 17:51:17,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:51:17,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-09-14 17:51:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:51:17,629 INFO L225 Difference]: With dead ends: 3259 [2018-09-14 17:51:17,629 INFO L226 Difference]: Without dead ends: 2168 [2018-09-14 17:51:17,635 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 17:51:17,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-09-14 17:51:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-09-14 17:51:17,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-09-14 17:51:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-09-14 17:51:17,716 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 139 [2018-09-14 17:51:17,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:51:17,717 INFO L480 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-09-14 17:51:17,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:51:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-09-14 17:51:17,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-09-14 17:51:17,722 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:51:17,722 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:17,722 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:51:17,723 INFO L82 PathProgramCache]: Analyzing trace with hash -990959541, now seen corresponding path program 1 times [2018-09-14 17:51:17,723 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:51:17,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:17,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:17,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:17,724 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:51:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:18,020 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:51:18,020 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:51:18,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:51:18,020 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:51:18,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:51:18,021 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:51:18,021 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:51:18,022 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-09-14 17:51:23,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:51:23,723 INFO L93 Difference]: Finished difference Result 7053 states and 12688 transitions. [2018-09-14 17:51:23,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:51:23,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-09-14 17:51:23,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:51:23,758 INFO L225 Difference]: With dead ends: 7053 [2018-09-14 17:51:23,759 INFO L226 Difference]: Without dead ends: 4917 [2018-09-14 17:51:23,779 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:51:23,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2018-09-14 17:51:23,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 4877. [2018-09-14 17:51:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2018-09-14 17:51:23,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 7891 transitions. [2018-09-14 17:51:23,923 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 7891 transitions. Word has length 167 [2018-09-14 17:51:23,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:51:23,924 INFO L480 AbstractCegarLoop]: Abstraction has 4877 states and 7891 transitions. [2018-09-14 17:51:23,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:51:23,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 7891 transitions. [2018-09-14 17:51:23,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-09-14 17:51:23,929 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:51:23,929 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:23,929 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:51:23,930 INFO L82 PathProgramCache]: Analyzing trace with hash -964551673, now seen corresponding path program 1 times [2018-09-14 17:51:23,930 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:51:23,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:23,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:23,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:23,931 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:51:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:51:24,486 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:51:24,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:51:24,486 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:51:24,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:51:24,487 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:51:24,487 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:51:24,488 INFO L87 Difference]: Start difference. First operand 4877 states and 7891 transitions. Second operand 6 states. [2018-09-14 17:51:28,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:51:28,057 INFO L93 Difference]: Finished difference Result 11909 states and 19972 transitions. [2018-09-14 17:51:28,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:51:28,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2018-09-14 17:51:28,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:51:28,106 INFO L225 Difference]: With dead ends: 11909 [2018-09-14 17:51:28,106 INFO L226 Difference]: Without dead ends: 7038 [2018-09-14 17:51:28,131 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:51:28,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2018-09-14 17:51:28,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 6977. [2018-09-14 17:51:28,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-09-14 17:51:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 9942 transitions. [2018-09-14 17:51:28,342 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 9942 transitions. Word has length 185 [2018-09-14 17:51:28,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:51:28,343 INFO L480 AbstractCegarLoop]: Abstraction has 6977 states and 9942 transitions. [2018-09-14 17:51:28,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:51:28,343 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 9942 transitions. [2018-09-14 17:51:28,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-14 17:51:28,349 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:51:28,350 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:28,350 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:51:28,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1679600594, now seen corresponding path program 1 times [2018-09-14 17:51:28,351 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:51:28,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:28,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:28,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:28,352 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:51:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:28,720 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:51:28,882 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:51:28,882 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:51:28,882 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:51:28,882 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:51:28,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:51:28,883 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:51:28,884 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:51:28,884 INFO L87 Difference]: Start difference. First operand 6977 states and 9942 transitions. Second operand 6 states. [2018-09-14 17:51:33,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:51:33,226 INFO L93 Difference]: Finished difference Result 17709 states and 25496 transitions. [2018-09-14 17:51:33,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:51:33,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 232 [2018-09-14 17:51:33,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:51:33,279 INFO L225 Difference]: With dead ends: 17709 [2018-09-14 17:51:33,279 INFO L226 Difference]: Without dead ends: 10738 [2018-09-14 17:51:33,330 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 17:51:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10738 states. [2018-09-14 17:51:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10738 to 10702. [2018-09-14 17:51:33,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10702 states. [2018-09-14 17:51:33,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10702 states to 10702 states and 14504 transitions. [2018-09-14 17:51:33,587 INFO L78 Accepts]: Start accepts. Automaton has 10702 states and 14504 transitions. Word has length 232 [2018-09-14 17:51:33,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:51:33,588 INFO L480 AbstractCegarLoop]: Abstraction has 10702 states and 14504 transitions. [2018-09-14 17:51:33,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:51:33,588 INFO L276 IsEmpty]: Start isEmpty. Operand 10702 states and 14504 transitions. [2018-09-14 17:51:33,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-09-14 17:51:33,595 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:51:33,595 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:33,595 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:51:33,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1670114349, now seen corresponding path program 1 times [2018-09-14 17:51:33,596 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:51:33,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:33,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:33,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:33,597 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:51:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-14 17:51:33,922 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:51:33,922 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:51:33,922 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:51:33,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:51:33,923 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:51:33,923 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:51:33,924 INFO L87 Difference]: Start difference. First operand 10702 states and 14504 transitions. Second operand 4 states. [2018-09-14 17:51:39,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:51:39,073 INFO L93 Difference]: Finished difference Result 27183 states and 37579 transitions. [2018-09-14 17:51:39,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:51:39,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2018-09-14 17:51:39,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:51:39,132 INFO L225 Difference]: With dead ends: 27183 [2018-09-14 17:51:39,132 INFO L226 Difference]: Without dead ends: 16487 [2018-09-14 17:51:39,168 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:51:39,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16487 states. [2018-09-14 17:51:39,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16487 to 16487. [2018-09-14 17:51:39,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16487 states. [2018-09-14 17:51:39,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16487 states to 16487 states and 21165 transitions. [2018-09-14 17:51:39,504 INFO L78 Accepts]: Start accepts. Automaton has 16487 states and 21165 transitions. Word has length 269 [2018-09-14 17:51:39,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:51:39,505 INFO L480 AbstractCegarLoop]: Abstraction has 16487 states and 21165 transitions. [2018-09-14 17:51:39,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:51:39,505 INFO L276 IsEmpty]: Start isEmpty. Operand 16487 states and 21165 transitions. [2018-09-14 17:51:39,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-09-14 17:51:39,558 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:51:39,559 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:51:39,559 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:51:39,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1403080672, now seen corresponding path program 1 times [2018-09-14 17:51:39,560 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:51:39,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:39,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:39,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:51:39,561 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:51:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:40,296 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2018-09-14 17:51:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-09-14 17:51:40,496 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:51:40,496 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 17:51:40,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:40,509 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:51:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:40,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:51:41,221 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2018-09-14 17:51:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-09-14 17:51:42,121 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:51:43,225 WARN L178 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 21 [2018-09-14 17:51:43,578 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2018-09-14 17:51:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-09-14 17:51:46,003 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:51:46,003 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 17:51:46,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:51:46,023 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:51:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:51:46,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:51:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-09-14 17:51:47,352 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:51:50,534 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-09-14 17:51:50,536 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:51:50,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 7, 6] total 14 [2018-09-14 17:51:50,537 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:51:50,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:51:50,538 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:51:50,538 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:51:50,539 INFO L87 Difference]: Start difference. First operand 16487 states and 21165 transitions. Second operand 9 states. [2018-09-14 17:51:53,009 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2018-09-14 17:52:33,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:52:33,488 INFO L93 Difference]: Finished difference Result 42042 states and 53454 transitions. [2018-09-14 17:52:33,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 17:52:33,496 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 492 [2018-09-14 17:52:33,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:52:33,655 INFO L225 Difference]: With dead ends: 42042 [2018-09-14 17:52:33,655 INFO L226 Difference]: Without dead ends: 25561 [2018-09-14 17:52:33,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1985 GetRequests, 1953 SyntacticMatches, 12 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2018-09-14 17:52:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25561 states. [2018-09-14 17:52:34,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25561 to 25496. [2018-09-14 17:52:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25496 states. [2018-09-14 17:52:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25496 states to 25496 states and 31733 transitions. [2018-09-14 17:52:34,769 INFO L78 Accepts]: Start accepts. Automaton has 25496 states and 31733 transitions. Word has length 492 [2018-09-14 17:52:34,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:52:34,770 INFO L480 AbstractCegarLoop]: Abstraction has 25496 states and 31733 transitions. [2018-09-14 17:52:34,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:52:34,771 INFO L276 IsEmpty]: Start isEmpty. Operand 25496 states and 31733 transitions. [2018-09-14 17:52:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-09-14 17:52:34,892 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:52:34,893 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:52:34,893 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:52:34,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1811401202, now seen corresponding path program 1 times [2018-09-14 17:52:34,893 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:52:34,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:34,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:34,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:34,895 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:52:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:36,129 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 17:52:36,451 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:52:36,947 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-14 17:52:37,485 WARN L178 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-14 17:52:38,393 WARN L178 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2018-09-14 17:52:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 387 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:52:39,620 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:52:39,620 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 17:52:39,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:39,630 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:52:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:39,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:52:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-09-14 17:52:40,439 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:52:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 183 proven. 191 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 17:52:41,556 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:52:41,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [14, 5] total 19 [2018-09-14 17:52:41,556 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:52:41,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:52:41,557 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:52:41,557 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2018-09-14 17:52:41,557 INFO L87 Difference]: Start difference. First operand 25496 states and 31733 transitions. Second operand 5 states. [2018-09-14 17:52:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:52:47,725 INFO L93 Difference]: Finished difference Result 51529 states and 64465 transitions. [2018-09-14 17:52:47,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:52:47,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 534 [2018-09-14 17:52:47,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:52:47,842 INFO L225 Difference]: With dead ends: 51529 [2018-09-14 17:52:47,842 INFO L226 Difference]: Without dead ends: 27369 [2018-09-14 17:52:47,919 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1085 GetRequests, 1063 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2018-09-14 17:52:47,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27369 states. [2018-09-14 17:52:48,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27369 to 27276. [2018-09-14 17:52:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27276 states. [2018-09-14 17:52:48,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27276 states to 27276 states and 33746 transitions. [2018-09-14 17:52:48,469 INFO L78 Accepts]: Start accepts. Automaton has 27276 states and 33746 transitions. Word has length 534 [2018-09-14 17:52:48,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:52:48,470 INFO L480 AbstractCegarLoop]: Abstraction has 27276 states and 33746 transitions. [2018-09-14 17:52:48,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:52:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 27276 states and 33746 transitions. [2018-09-14 17:52:48,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-09-14 17:52:48,525 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:52:48,526 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:52:48,526 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:52:48,527 INFO L82 PathProgramCache]: Analyzing trace with hash 168759944, now seen corresponding path program 1 times [2018-09-14 17:52:48,527 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:52:48,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:48,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:48,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:48,528 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:52:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:49,002 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:52:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 123 proven. 207 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-09-14 17:52:49,751 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:52:49,751 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 17:52:49,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:49,760 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:52:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:49,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:52:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:52:50,164 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:52:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:52:50,478 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:52:50,478 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 17:52:50,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:50,493 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:52:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:50,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:52:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2018-09-14 17:52:51,133 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:52:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2018-09-14 17:52:51,764 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 17:52:51,765 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-14 17:52:51,765 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:52:51,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:52:51,766 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:52:51,766 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:52:51,768 INFO L87 Difference]: Start difference. First operand 27276 states and 33746 transitions. Second operand 5 states. [2018-09-14 17:52:55,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:52:55,667 INFO L93 Difference]: Finished difference Result 55571 states and 69170 transitions. [2018-09-14 17:52:55,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:52:55,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 536 [2018-09-14 17:52:55,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:52:55,754 INFO L225 Difference]: With dead ends: 55571 [2018-09-14 17:52:55,755 INFO L226 Difference]: Without dead ends: 29631 [2018-09-14 17:52:55,831 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2152 GetRequests, 2134 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:52:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29631 states. [2018-09-14 17:52:56,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29631 to 29610. [2018-09-14 17:52:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29610 states. [2018-09-14 17:52:56,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29610 states to 29610 states and 35560 transitions. [2018-09-14 17:52:56,280 INFO L78 Accepts]: Start accepts. Automaton has 29610 states and 35560 transitions. Word has length 536 [2018-09-14 17:52:56,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:52:56,281 INFO L480 AbstractCegarLoop]: Abstraction has 29610 states and 35560 transitions. [2018-09-14 17:52:56,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:52:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 29610 states and 35560 transitions. [2018-09-14 17:52:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2018-09-14 17:52:56,323 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:52:56,324 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:52:56,324 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:52:56,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1466026210, now seen corresponding path program 1 times [2018-09-14 17:52:56,325 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:52:56,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:56,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:56,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:52:56,326 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:52:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:56,664 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 17:52:57,766 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 278 proven. 183 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-09-14 17:52:57,766 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:52:57,766 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 17:52:57,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:57,776 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:52:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:57,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:52:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 17:52:58,490 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:52:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 278 proven. 183 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-09-14 17:52:58,891 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:52:58,891 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 17:52:58,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:52:58,907 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:52:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:52:59,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 17:53:00,313 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 278 proven. 183 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-09-14 17:53:00,804 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:53:00,805 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 25 [2018-09-14 17:53:00,805 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:53:00,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-14 17:53:00,809 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-14 17:53:00,809 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2018-09-14 17:53:00,809 INFO L87 Difference]: Start difference. First operand 29610 states and 35560 transitions. Second operand 16 states. [2018-09-14 17:53:15,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:53:15,207 INFO L93 Difference]: Finished difference Result 82082 states and 102123 transitions. [2018-09-14 17:53:15,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-14 17:53:15,208 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 584 [2018-09-14 17:53:15,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:53:15,323 INFO L225 Difference]: With dead ends: 82082 [2018-09-14 17:53:15,323 INFO L226 Difference]: Without dead ends: 35146 [2018-09-14 17:53:15,593 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2418 GetRequests, 2356 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=874, Invalid=3158, Unknown=0, NotChecked=0, Total=4032 [2018-09-14 17:53:15,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35146 states. [2018-09-14 17:53:16,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35146 to 32928. [2018-09-14 17:53:16,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32928 states. [2018-09-14 17:53:16,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32928 states to 32928 states and 36050 transitions. [2018-09-14 17:53:16,157 INFO L78 Accepts]: Start accepts. Automaton has 32928 states and 36050 transitions. Word has length 584 [2018-09-14 17:53:16,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:53:16,158 INFO L480 AbstractCegarLoop]: Abstraction has 32928 states and 36050 transitions. [2018-09-14 17:53:16,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-14 17:53:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 32928 states and 36050 transitions. [2018-09-14 17:53:16,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2018-09-14 17:53:16,170 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:53:16,171 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:53:16,171 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:53:16,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1042320033, now seen corresponding path program 1 times [2018-09-14 17:53:16,171 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:53:16,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:16,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:16,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:16,173 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:53:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-09-14 17:53:17,054 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:53:17,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:53:17,054 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:53:17,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:53:17,056 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:53:17,056 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:53:17,056 INFO L87 Difference]: Start difference. First operand 32928 states and 36050 transitions. Second operand 4 states. [2018-09-14 17:53:19,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:53:19,500 INFO L93 Difference]: Finished difference Result 63142 states and 69289 transitions. [2018-09-14 17:53:19,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:53:19,501 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 637 [2018-09-14 17:53:19,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:53:19,588 INFO L225 Difference]: With dead ends: 63142 [2018-09-14 17:53:19,588 INFO L226 Difference]: Without dead ends: 32928 [2018-09-14 17:53:19,661 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:53:19,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32928 states. [2018-09-14 17:53:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32928 to 32587. [2018-09-14 17:53:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32587 states. [2018-09-14 17:53:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32587 states to 32587 states and 35112 transitions. [2018-09-14 17:53:20,170 INFO L78 Accepts]: Start accepts. Automaton has 32587 states and 35112 transitions. Word has length 637 [2018-09-14 17:53:20,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:53:20,171 INFO L480 AbstractCegarLoop]: Abstraction has 32587 states and 35112 transitions. [2018-09-14 17:53:20,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:53:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 32587 states and 35112 transitions. [2018-09-14 17:53:20,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2018-09-14 17:53:20,183 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:53:20,184 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:53:20,184 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:53:20,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1459853930, now seen corresponding path program 1 times [2018-09-14 17:53:20,184 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:53:20,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:20,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:20,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:20,186 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:53:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 193 proven. 580 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-14 17:53:21,140 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:21,140 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 17:53:21,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:21,150 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:21,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 494 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:53:22,022 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 193 proven. 593 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:53:22,997 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:22,997 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 17:53:23,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:23,013 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:23,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 494 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2018-09-14 17:53:23,743 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 193 proven. 593 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:53:24,908 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:53:24,909 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 16 [2018-09-14 17:53:24,909 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:53:24,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 17:53:24,912 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 17:53:24,912 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:53:24,912 INFO L87 Difference]: Start difference. First operand 32587 states and 35112 transitions. Second operand 10 states. [2018-09-14 17:53:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:53:33,388 INFO L93 Difference]: Finished difference Result 79132 states and 86231 transitions. [2018-09-14 17:53:33,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 17:53:33,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 740 [2018-09-14 17:53:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:53:33,523 INFO L225 Difference]: With dead ends: 79132 [2018-09-14 17:53:33,523 INFO L226 Difference]: Without dead ends: 47231 [2018-09-14 17:53:33,621 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2982 GetRequests, 2961 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:53:33,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47231 states. [2018-09-14 17:53:34,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47231 to 43535. [2018-09-14 17:53:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43535 states. [2018-09-14 17:53:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43535 states to 43535 states and 46933 transitions. [2018-09-14 17:53:34,291 INFO L78 Accepts]: Start accepts. Automaton has 43535 states and 46933 transitions. Word has length 740 [2018-09-14 17:53:34,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:53:34,292 INFO L480 AbstractCegarLoop]: Abstraction has 43535 states and 46933 transitions. [2018-09-14 17:53:34,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 17:53:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 43535 states and 46933 transitions. [2018-09-14 17:53:34,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2018-09-14 17:53:34,305 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:53:34,306 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:53:34,306 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:53:34,306 INFO L82 PathProgramCache]: Analyzing trace with hash 870281785, now seen corresponding path program 1 times [2018-09-14 17:53:34,306 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:53:34,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:34,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:34,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:53:34,308 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:53:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 260 proven. 606 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-09-14 17:53:35,852 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:35,852 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 17:53:35,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:35,861 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:36,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 513 proven. 322 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-09-14 17:53:39,875 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 576 proven. 111 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-09-14 17:53:40,734 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:53:40,734 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:53:40,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:53:40,749 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:53:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:53:41,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:53:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 607 proven. 322 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-09-14 17:53:41,599 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:53:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 991 backedges. 576 proven. 111 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-09-14 17:53:42,269 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:53:42,270 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 5, 11, 5] total 16 [2018-09-14 17:53:42,270 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:53:42,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 17:53:42,272 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 17:53:42,273 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=183, Unknown=2, NotChecked=0, Total=240 [2018-09-14 17:53:42,273 INFO L87 Difference]: Start difference. First operand 43535 states and 46933 transitions. Second operand 13 states. Received shutdown request... [2018-09-14 17:54:53,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-14 17:54:53,982 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:54:53,987 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:54:53,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:54:53 BoogieIcfgContainer [2018-09-14 17:54:53,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:54:53,988 INFO L168 Benchmark]: Toolchain (without parser) took 239574.88 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 679.4 MB. Max. memory is 7.1 GB. [2018-09-14 17:54:53,989 INFO L168 Benchmark]: CDTParser took 0.34 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 17:54:53,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1177.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:54:53,991 INFO L168 Benchmark]: Boogie Procedure Inliner took 197.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:54:53,992 INFO L168 Benchmark]: Boogie Preprocessor took 462.25 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 829.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -980.2 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:54:53,997 INFO L168 Benchmark]: RCFGBuilder took 6412.35 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 251.6 MB). Peak memory consumption was 251.6 MB. Max. memory is 7.1 GB. [2018-09-14 17:54:53,998 INFO L168 Benchmark]: TraceAbstraction took 231318.60 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 449.2 MB. Max. memory is 7.1 GB. [2018-09-14 17:54:54,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 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 1177.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 197.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 462.25 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 829.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -980.2 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6412.35 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 251.6 MB). Peak memory consumption was 251.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231318.60 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 449.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while BasicCegarLoop was constructing difference of abstraction (43535states) and FLOYD_HOARE automaton (currently 39 states, 13 states before enhancement), while ReachableStatesComputation was computing reachable states (15443 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 231.2s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 184.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2183 SDtfs, 27201 SDslu, 2629 SDs, 0 SdLazy, 46656 SolverSat, 9643 SolverUnsat, 43 SolverUnknown, 0 SolverNotchecked, 157.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13739 GetRequests, 13493 SyntacticMatches, 36 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2084 ImplicationChecksByTransitivity, 24.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43535occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 6597 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 33.4s InterpolantComputationTime, 12068 NumberOfCodeBlocks, 12068 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 18769 ConstructedInterpolants, 126 QuantifiedInterpolants, 75919943 SizeOfPredicates, 18 NumberOfNonLiveVariables, 9109 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 35 InterpolantComputations, 9 PerfectInterpolantSequences, 12420/17312 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/Problem16_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-54-54-017.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-54-54-017.csv Completed graceful shutdown