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/Problem18_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:12:23,454 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:12:23,458 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:12:23,477 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:12:23,478 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:12:23,479 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:12:23,480 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:12:23,482 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:12:23,484 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:12:23,485 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:12:23,486 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:12:23,486 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:12:23,487 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:12:23,488 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:12:23,489 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:12:23,490 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:12:23,491 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:12:23,493 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:12:23,495 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:12:23,497 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:12:23,498 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:12:23,499 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:12:23,502 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:12:23,502 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:12:23,502 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:12:23,503 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:12:23,506 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:12:23,509 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:12:23,510 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:12:23,512 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:12:23,513 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:12:23,515 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:12:23,515 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:12:23,515 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:12:23,516 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:12:23,517 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:12:23,517 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 18:12:23,545 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:12:23,546 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:12:23,547 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:12:23,548 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:12:23,548 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:12:23,548 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:12:23,549 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:12:23,549 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:12:23,549 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:12:23,549 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:12:23,549 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:12:23,550 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:12:23,551 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:12:23,551 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:12:23,552 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:12:23,552 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:12:23,552 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:12:23,552 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:12:23,552 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:12:23,553 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:12:23,553 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:12:23,553 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:12:23,553 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:12:23,555 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:12:23,555 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:12:23,555 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:12:23,555 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:12:23,555 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:12:23,556 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:12:23,556 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:12:23,556 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:12:23,556 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:12:23,556 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:12:23,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:12:23,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:12:23,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:12:23,646 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:12:23,647 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:12:23,648 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-09-14 18:12:23,999 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76b807db/86043e86a4d0433d98a0351e723bbcc9/FLAGfef50627f [2018-09-14 18:12:24,434 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:12:24,435 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-09-14 18:12:24,459 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76b807db/86043e86a4d0433d98a0351e723bbcc9/FLAGfef50627f [2018-09-14 18:12:24,476 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76b807db/86043e86a4d0433d98a0351e723bbcc9 [2018-09-14 18:12:24,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:12:24,490 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:12:24,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:12:24,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:12:24,499 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:12:24,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:12:24" (1/1) ... [2018-09-14 18:12:24,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f57d78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:24, skipping insertion in model container [2018-09-14 18:12:24,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:12:24" (1/1) ... [2018-09-14 18:12:24,515 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:12:25,639 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:12:25,659 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:12:26,146 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:12:26,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:26 WrapperNode [2018-09-14 18:12:26,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:12:26,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:12:26,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:12:26,323 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:12:26,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:26" (1/1) ... [2018-09-14 18:12:26,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:26" (1/1) ... [2018-09-14 18:12:26,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:12:26,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:12:26,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:12:26,487 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:12:26,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:26" (1/1) ... [2018-09-14 18:12:26,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:26" (1/1) ... [2018-09-14 18:12:26,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:26" (1/1) ... [2018-09-14 18:12:26,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:26" (1/1) ... [2018-09-14 18:12:27,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:26" (1/1) ... [2018-09-14 18:12:27,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:26" (1/1) ... [2018-09-14 18:12:27,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:26" (1/1) ... [2018-09-14 18:12:27,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:12:27,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:12:27,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:12:27,133 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:12:27,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:26" (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 18:12:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:12:27,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:12:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:12:27,203 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:12:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:12:27,204 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:12:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:12:27,204 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:12:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:12:27,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:12:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:12:27,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:12:35,234 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:12:35,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:12:35 BoogieIcfgContainer [2018-09-14 18:12:35,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:12:35,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:12:35,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:12:35,240 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:12:35,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:12:24" (1/3) ... [2018-09-14 18:12:35,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61375244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:12:35, skipping insertion in model container [2018-09-14 18:12:35,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:26" (2/3) ... [2018-09-14 18:12:35,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61375244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:12:35, skipping insertion in model container [2018-09-14 18:12:35,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:12:35" (3/3) ... [2018-09-14 18:12:35,243 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label28_true-unreach-call.c [2018-09-14 18:12:35,254 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:12:35,263 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:12:35,324 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:12:35,325 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:12:35,325 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:12:35,325 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:12:35,325 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:12:35,326 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:12:35,326 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:12:35,326 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:12:35,326 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:12:35,366 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-14 18:12:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-14 18:12:35,383 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:12:35,384 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, 1, 1, 1] [2018-09-14 18:12:35,385 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:12:35,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2076114681, now seen corresponding path program 1 times [2018-09-14 18:12:35,392 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:12:35,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:35,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:12:35,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:35,447 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:12:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:12:35,937 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 18:12:35,940 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:12:35,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:12:35,940 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:12:35,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:12:35,963 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:12:35,964 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:12:35,967 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-09-14 18:12:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:12:46,638 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-09-14 18:12:46,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:12:46,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-09-14 18:12:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:12:46,677 INFO L225 Difference]: With dead ends: 2974 [2018-09-14 18:12:46,677 INFO L226 Difference]: Without dead ends: 2193 [2018-09-14 18:12:46,687 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 18:12:46,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-09-14 18:12:46,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-09-14 18:12:46,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-14 18:12:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-09-14 18:12:46,865 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 71 [2018-09-14 18:12:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:12:46,866 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-09-14 18:12:46,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:12:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-09-14 18:12:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-09-14 18:12:46,880 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:12:46,881 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:12:46,881 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:12:46,881 INFO L82 PathProgramCache]: Analyzing trace with hash 865904024, now seen corresponding path program 1 times [2018-09-14 18:12:46,882 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:12:46,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:46,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:12:46,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:46,884 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:12:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:12:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:12:47,242 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:12:47,242 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:12:47,242 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:12:47,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:12:47,245 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:12:47,245 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:12:47,245 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-09-14 18:12:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:12:56,413 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-09-14 18:12:56,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:12:56,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-09-14 18:12:56,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:12:56,435 INFO L225 Difference]: With dead ends: 4422 [2018-09-14 18:12:56,435 INFO L226 Difference]: Without dead ends: 2954 [2018-09-14 18:12:56,441 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:12:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-09-14 18:12:56,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-09-14 18:12:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-09-14 18:12:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-09-14 18:12:56,541 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 141 [2018-09-14 18:12:56,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:12:56,542 INFO L480 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-09-14 18:12:56,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:12:56,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-09-14 18:12:56,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-14 18:12:56,546 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:12:56,547 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, 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 18:12:56,547 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:12:56,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1444523296, now seen corresponding path program 1 times [2018-09-14 18:12:56,547 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:12:56,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:56,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:12:56,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:56,549 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:12:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:12:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:12:56,732 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:12:56,732 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:12:56,732 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:12:56,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:12:56,733 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:12:56,733 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:12:56,734 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-09-14 18:13:01,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:01,889 INFO L93 Difference]: Finished difference Result 7357 states and 11327 transitions. [2018-09-14 18:13:01,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:13:01,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-09-14 18:13:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:01,931 INFO L225 Difference]: With dead ends: 7357 [2018-09-14 18:13:01,931 INFO L226 Difference]: Without dead ends: 4433 [2018-09-14 18:13:01,941 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 18:13:01,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2018-09-14 18:13:02,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4400. [2018-09-14 18:13:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4400 states. [2018-09-14 18:13:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 5842 transitions. [2018-09-14 18:13:02,083 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 5842 transitions. Word has length 145 [2018-09-14 18:13:02,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:02,084 INFO L480 AbstractCegarLoop]: Abstraction has 4400 states and 5842 transitions. [2018-09-14 18:13:02,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:13:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 5842 transitions. [2018-09-14 18:13:02,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-14 18:13:02,088 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:02,089 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:13:02,089 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:02,089 INFO L82 PathProgramCache]: Analyzing trace with hash -797874491, now seen corresponding path program 1 times [2018-09-14 18:13:02,090 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:02,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:02,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:02,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:02,095 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:02,337 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:13:02,337 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:13:02,337 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:13:02,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:13:02,338 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:13:02,339 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:13:02,339 INFO L87 Difference]: Start difference. First operand 4400 states and 5842 transitions. Second operand 4 states. [2018-09-14 18:13:08,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:08,778 INFO L93 Difference]: Finished difference Result 17356 states and 23632 transitions. [2018-09-14 18:13:08,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:13:08,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-09-14 18:13:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:08,850 INFO L225 Difference]: With dead ends: 17356 [2018-09-14 18:13:08,851 INFO L226 Difference]: Without dead ends: 12962 [2018-09-14 18:13:08,878 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:13:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2018-09-14 18:13:09,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12962. [2018-09-14 18:13:09,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12962 states. [2018-09-14 18:13:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 16372 transitions. [2018-09-14 18:13:09,171 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 16372 transitions. Word has length 178 [2018-09-14 18:13:09,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:09,172 INFO L480 AbstractCegarLoop]: Abstraction has 12962 states and 16372 transitions. [2018-09-14 18:13:09,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:13:09,172 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 16372 transitions. [2018-09-14 18:13:09,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-09-14 18:13:09,180 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:09,181 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:09,181 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:09,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1768524495, now seen corresponding path program 1 times [2018-09-14 18:13:09,182 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:09,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:09,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:09,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:09,183 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:09,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:09,780 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 18:13:09,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:09,790 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:09,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:10,399 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:11,140 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:11,140 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 18:13:11,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:11,157 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:11,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:11,608 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:11,914 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:13:11,914 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 18:13:11,914 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:13:11,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:13:11,916 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:13:11,916 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:13:11,917 INFO L87 Difference]: Start difference. First operand 12962 states and 16372 transitions. Second operand 9 states. [2018-09-14 18:13:30,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:30,887 INFO L93 Difference]: Finished difference Result 60570 states and 86734 transitions. [2018-09-14 18:13:30,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 18:13:30,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 289 [2018-09-14 18:13:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:31,246 INFO L225 Difference]: With dead ends: 60570 [2018-09-14 18:13:31,246 INFO L226 Difference]: Without dead ends: 47614 [2018-09-14 18:13:31,532 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1177 GetRequests, 1153 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-09-14 18:13:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47614 states. [2018-09-14 18:13:33,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47614 to 47329. [2018-09-14 18:13:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47329 states. [2018-09-14 18:13:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47329 states to 47329 states and 61774 transitions. [2018-09-14 18:13:33,237 INFO L78 Accepts]: Start accepts. Automaton has 47329 states and 61774 transitions. Word has length 289 [2018-09-14 18:13:33,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:33,238 INFO L480 AbstractCegarLoop]: Abstraction has 47329 states and 61774 transitions. [2018-09-14 18:13:33,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:13:33,238 INFO L276 IsEmpty]: Start isEmpty. Operand 47329 states and 61774 transitions. [2018-09-14 18:13:33,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-09-14 18:13:33,255 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:33,256 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:33,256 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:33,256 INFO L82 PathProgramCache]: Analyzing trace with hash 942966389, now seen corresponding path program 1 times [2018-09-14 18:13:33,257 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:33,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:33,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:33,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:33,258 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:33,813 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 18:13:34,008 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 18:13:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:35,049 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:35,049 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 18:13:35,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:35,060 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:35,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 18:13:35,325 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 18:13:35,821 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:13:35,822 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [13] total 15 [2018-09-14 18:13:35,822 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:13:35,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:13:35,823 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:13:35,823 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2018-09-14 18:13:35,823 INFO L87 Difference]: Start difference. First operand 47329 states and 61774 transitions. Second operand 3 states. [2018-09-14 18:13:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:39,693 INFO L93 Difference]: Finished difference Result 94652 states and 123652 transitions. [2018-09-14 18:13:39,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:13:39,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 393 [2018-09-14 18:13:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:39,906 INFO L225 Difference]: With dead ends: 94652 [2018-09-14 18:13:39,907 INFO L226 Difference]: Without dead ends: 47329 [2018-09-14 18:13:40,086 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 798 GetRequests, 785 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2018-09-14 18:13:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47329 states. [2018-09-14 18:13:40,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47329 to 47329. [2018-09-14 18:13:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47329 states. [2018-09-14 18:13:40,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47329 states to 47329 states and 59455 transitions. [2018-09-14 18:13:41,000 INFO L78 Accepts]: Start accepts. Automaton has 47329 states and 59455 transitions. Word has length 393 [2018-09-14 18:13:41,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:41,001 INFO L480 AbstractCegarLoop]: Abstraction has 47329 states and 59455 transitions. [2018-09-14 18:13:41,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:13:41,001 INFO L276 IsEmpty]: Start isEmpty. Operand 47329 states and 59455 transitions. [2018-09-14 18:13:41,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-09-14 18:13:41,023 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:41,024 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, 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, 3, 3, 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] [2018-09-14 18:13:41,024 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:41,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1869243030, now seen corresponding path program 1 times [2018-09-14 18:13:41,024 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:41,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:41,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:41,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:41,025 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:41,737 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 18:13:42,094 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-14 18:13:43,154 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 362 proven. 174 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2018-09-14 18:13:43,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:43,154 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 18:13:43,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:43,162 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:43,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 528 proven. 2 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-09-14 18:13:43,546 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 528 proven. 2 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-09-14 18:13:43,777 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:43,778 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 18:13:43,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:43,794 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:44,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 528 proven. 2 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-09-14 18:13:44,976 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:45,140 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 18:13:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 528 proven. 2 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-09-14 18:13:45,493 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:13:45,493 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 22 [2018-09-14 18:13:45,494 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:13:45,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 18:13:45,495 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 18:13:45,496 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2018-09-14 18:13:45,496 INFO L87 Difference]: Start difference. First operand 47329 states and 59455 transitions. Second operand 15 states. [2018-09-14 18:14:05,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:05,631 INFO L93 Difference]: Finished difference Result 111757 states and 145803 transitions. [2018-09-14 18:14:05,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-14 18:14:05,632 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 454 [2018-09-14 18:14:05,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:05,856 INFO L225 Difference]: With dead ends: 111757 [2018-09-14 18:14:05,856 INFO L226 Difference]: Without dead ends: 59642 [2018-09-14 18:14:06,080 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1904 GetRequests, 1837 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=949, Invalid=3607, Unknown=0, NotChecked=0, Total=4556 [2018-09-14 18:14:06,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59642 states. [2018-09-14 18:14:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59642 to 58957. [2018-09-14 18:14:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58957 states. [2018-09-14 18:14:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58957 states to 58957 states and 68918 transitions. [2018-09-14 18:14:07,143 INFO L78 Accepts]: Start accepts. Automaton has 58957 states and 68918 transitions. Word has length 454 [2018-09-14 18:14:07,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:07,144 INFO L480 AbstractCegarLoop]: Abstraction has 58957 states and 68918 transitions. [2018-09-14 18:14:07,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 18:14:07,144 INFO L276 IsEmpty]: Start isEmpty. Operand 58957 states and 68918 transitions. [2018-09-14 18:14:07,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2018-09-14 18:14:07,173 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:07,174 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:07,174 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:07,175 INFO L82 PathProgramCache]: Analyzing trace with hash 440246335, now seen corresponding path program 1 times [2018-09-14 18:14:07,175 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:07,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:07,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:07,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:07,176 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:07,603 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:14:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 132 proven. 243 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-14 18:14:08,189 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:08,189 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 18:14:08,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:08,198 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:08,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-09-14 18:14:08,498 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-09-14 18:14:08,742 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:14:08,742 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-14 18:14:08,743 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:08,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:14:08,743 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:14:08,744 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:14:08,744 INFO L87 Difference]: Start difference. First operand 58957 states and 68918 transitions. Second operand 3 states. [2018-09-14 18:14:12,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:12,150 INFO L93 Difference]: Finished difference Result 117908 states and 137830 transitions. [2018-09-14 18:14:12,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:14:12,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 560 [2018-09-14 18:14:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:12,354 INFO L225 Difference]: With dead ends: 117908 [2018-09-14 18:14:12,354 INFO L226 Difference]: Without dead ends: 58957 [2018-09-14 18:14:12,535 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1132 GetRequests, 1122 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:14:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58957 states. [2018-09-14 18:14:13,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58957 to 58957. [2018-09-14 18:14:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58957 states. [2018-09-14 18:14:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58957 states to 58957 states and 67073 transitions. [2018-09-14 18:14:13,361 INFO L78 Accepts]: Start accepts. Automaton has 58957 states and 67073 transitions. Word has length 560 [2018-09-14 18:14:13,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:13,363 INFO L480 AbstractCegarLoop]: Abstraction has 58957 states and 67073 transitions. [2018-09-14 18:14:13,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:14:13,363 INFO L276 IsEmpty]: Start isEmpty. Operand 58957 states and 67073 transitions. [2018-09-14 18:14:13,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 656 [2018-09-14 18:14:13,400 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:13,400 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, 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, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:13,401 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:13,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1842865461, now seen corresponding path program 1 times [2018-09-14 18:14:13,401 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:13,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:13,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:13,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:13,402 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 536 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-09-14 18:14:14,803 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:14,803 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:14:14,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:14,812 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:14,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 536 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-09-14 18:14:15,247 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 536 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-09-14 18:14:15,542 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:15,542 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:14:15,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:15,559 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:15,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 536 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-09-14 18:14:16,285 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 803 backedges. 536 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-09-14 18:14:16,864 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:14:16,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 18:14:16,865 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:14:16,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:14:16,867 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:14:16,867 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:14:16,867 INFO L87 Difference]: Start difference. First operand 58957 states and 67073 transitions. Second operand 9 states. [2018-09-14 18:14:29,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:29,469 INFO L93 Difference]: Finished difference Result 132170 states and 159947 transitions. [2018-09-14 18:14:29,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-14 18:14:29,470 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 655 [2018-09-14 18:14:29,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:29,856 INFO L225 Difference]: With dead ends: 132170 [2018-09-14 18:14:29,857 INFO L226 Difference]: Without dead ends: 68532 [2018-09-14 18:14:30,090 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2650 GetRequests, 2621 SyntacticMatches, 7 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-14 18:14:30,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68532 states. [2018-09-14 18:14:31,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68532 to 68187. [2018-09-14 18:14:31,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68187 states. [2018-09-14 18:14:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68187 states to 68187 states and 77912 transitions. [2018-09-14 18:14:31,527 INFO L78 Accepts]: Start accepts. Automaton has 68187 states and 77912 transitions. Word has length 655 [2018-09-14 18:14:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:31,528 INFO L480 AbstractCegarLoop]: Abstraction has 68187 states and 77912 transitions. [2018-09-14 18:14:31,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:14:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 68187 states and 77912 transitions. [2018-09-14 18:14:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2018-09-14 18:14:31,561 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:31,562 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:31,562 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:31,562 INFO L82 PathProgramCache]: Analyzing trace with hash -578940980, now seen corresponding path program 1 times [2018-09-14 18:14:31,563 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:31,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:31,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:31,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:31,564 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-09-14 18:14:32,150 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:14:32,151 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:14:32,151 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:32,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:14:32,151 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:14:32,151 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:14:32,152 INFO L87 Difference]: Start difference. First operand 68187 states and 77912 transitions. Second operand 4 states. [2018-09-14 18:14:38,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:38,136 INFO L93 Difference]: Finished difference Result 138761 states and 157038 transitions. [2018-09-14 18:14:38,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:14:38,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 722 [2018-09-14 18:14:38,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:38,360 INFO L225 Difference]: With dead ends: 138761 [2018-09-14 18:14:38,361 INFO L226 Difference]: Without dead ends: 69864 [2018-09-14 18:14:38,519 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 18:14:38,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69864 states. [2018-09-14 18:14:39,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69864 to 68957. [2018-09-14 18:14:39,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68957 states. [2018-09-14 18:14:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68957 states to 68957 states and 74693 transitions. [2018-09-14 18:14:39,532 INFO L78 Accepts]: Start accepts. Automaton has 68957 states and 74693 transitions. Word has length 722 [2018-09-14 18:14:39,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:39,533 INFO L480 AbstractCegarLoop]: Abstraction has 68957 states and 74693 transitions. [2018-09-14 18:14:39,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:14:39,533 INFO L276 IsEmpty]: Start isEmpty. Operand 68957 states and 74693 transitions. [2018-09-14 18:14:39,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2018-09-14 18:14:39,574 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:39,574 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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:39,575 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:39,575 INFO L82 PathProgramCache]: Analyzing trace with hash 73286151, now seen corresponding path program 1 times [2018-09-14 18:14:39,575 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:39,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:39,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:39,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:39,576 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 672 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2018-09-14 18:14:40,741 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:40,741 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:14:41,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:41,113 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:41,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 672 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2018-09-14 18:14:41,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 672 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2018-09-14 18:14:42,315 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:42,315 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:14:42,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:42,331 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:42,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 672 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2018-09-14 18:14:43,514 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1052 backedges. 672 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2018-09-14 18:14:43,942 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:14:43,943 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 18:14:43,943 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:14:43,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:14:43,945 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:14:43,945 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:14:43,945 INFO L87 Difference]: Start difference. First operand 68957 states and 74693 transitions. Second operand 9 states. [2018-09-14 18:14:54,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:54,065 INFO L93 Difference]: Finished difference Result 152403 states and 169602 transitions. [2018-09-14 18:14:54,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-14 18:14:54,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 871 [2018-09-14 18:14:54,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:54,346 INFO L225 Difference]: With dead ends: 152403 [2018-09-14 18:14:54,346 INFO L226 Difference]: Without dead ends: 75240 [2018-09-14 18:14:54,530 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3511 GetRequests, 3483 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-09-14 18:14:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75240 states. [2018-09-14 18:14:55,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75240 to 74918. [2018-09-14 18:14:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74918 states. [2018-09-14 18:14:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74918 states to 74918 states and 82191 transitions. [2018-09-14 18:14:55,905 INFO L78 Accepts]: Start accepts. Automaton has 74918 states and 82191 transitions. Word has length 871 [2018-09-14 18:14:55,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:55,906 INFO L480 AbstractCegarLoop]: Abstraction has 74918 states and 82191 transitions. [2018-09-14 18:14:55,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:14:55,907 INFO L276 IsEmpty]: Start isEmpty. Operand 74918 states and 82191 transitions. [2018-09-14 18:14:56,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2018-09-14 18:14:56,218 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:56,219 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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:56,221 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:56,221 INFO L82 PathProgramCache]: Analyzing trace with hash -6908196, now seen corresponding path program 1 times [2018-09-14 18:14:56,222 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:56,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:56,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:56,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:56,223 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 608 proven. 67 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-09-14 18:14:57,634 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:57,634 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:14:57,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:57,642 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:57,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:58,554 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-09-14 18:14:59,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 430 proven. 0 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2018-09-14 18:14:59,158 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:59,706 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 18:15:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 256 proven. 354 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-09-14 18:15:00,840 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:15:00,841 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2018-09-14 18:15:00,841 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:00,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:15:00,842 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:15:00,842 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:15:00,843 INFO L87 Difference]: Start difference. First operand 74918 states and 82191 transitions. Second operand 5 states. [2018-09-14 18:15:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:06,361 INFO L93 Difference]: Finished difference Result 156849 states and 169091 transitions. [2018-09-14 18:15:06,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:15:06,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 872 [2018-09-14 18:15:06,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:06,512 INFO L225 Difference]: With dead ends: 156849 [2018-09-14 18:15:06,512 INFO L226 Difference]: Without dead ends: 79116 [2018-09-14 18:15:06,636 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1760 GetRequests, 1739 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2018-09-14 18:15:06,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79116 states. [2018-09-14 18:15:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79116 to 74862. [2018-09-14 18:15:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74862 states. [2018-09-14 18:15:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74862 states to 74862 states and 79566 transitions. [2018-09-14 18:15:07,523 INFO L78 Accepts]: Start accepts. Automaton has 74862 states and 79566 transitions. Word has length 872 [2018-09-14 18:15:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:07,524 INFO L480 AbstractCegarLoop]: Abstraction has 74862 states and 79566 transitions. [2018-09-14 18:15:07,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:15:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 74862 states and 79566 transitions. [2018-09-14 18:15:07,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2018-09-14 18:15:07,569 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:07,570 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:07,570 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:07,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1217098878, now seen corresponding path program 1 times [2018-09-14 18:15:07,570 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:07,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:07,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:07,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:07,572 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2297 backedges. 802 proven. 567 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2018-09-14 18:15:09,338 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:09,339 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:15:09,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:09,349 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:09,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2297 backedges. 1561 proven. 2 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2018-09-14 18:15:10,510 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2297 backedges. 793 proven. 146 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2018-09-14 18:15:10,968 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:10,968 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:15:10,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:10,984 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:11,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2297 backedges. 1561 proven. 2 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2018-09-14 18:15:12,150 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2297 backedges. 793 proven. 146 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2018-09-14 18:15:12,706 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:15:12,707 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5, 5, 5] total 21 [2018-09-14 18:15:12,707 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:15:12,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-14 18:15:12,708 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-14 18:15:12,709 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2018-09-14 18:15:12,709 INFO L87 Difference]: Start difference. First operand 74862 states and 79566 transitions. Second operand 20 states. [2018-09-14 18:15:32,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:32,731 INFO L93 Difference]: Finished difference Result 147064 states and 155128 transitions. [2018-09-14 18:15:32,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-14 18:15:32,731 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 981 [2018-09-14 18:15:32,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:32,880 INFO L225 Difference]: With dead ends: 147064 [2018-09-14 18:15:32,880 INFO L226 Difference]: Without dead ends: 75769 [2018-09-14 18:15:33,169 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4011 GetRequests, 3950 SyntacticMatches, 4 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=791, Invalid=2631, Unknown=0, NotChecked=0, Total=3422 [2018-09-14 18:15:33,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75769 states. [2018-09-14 18:15:33,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75769 to 72908. [2018-09-14 18:15:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72908 states. [2018-09-14 18:15:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72908 states to 72908 states and 75511 transitions. [2018-09-14 18:15:33,943 INFO L78 Accepts]: Start accepts. Automaton has 72908 states and 75511 transitions. Word has length 981 [2018-09-14 18:15:33,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:33,944 INFO L480 AbstractCegarLoop]: Abstraction has 72908 states and 75511 transitions. [2018-09-14 18:15:33,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-14 18:15:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 72908 states and 75511 transitions. [2018-09-14 18:15:33,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2018-09-14 18:15:33,971 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:33,971 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:15:33,971 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:33,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1892340537, now seen corresponding path program 1 times [2018-09-14 18:15:33,972 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:33,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:33,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:33,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:33,973 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:34,597 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:15:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 298 proven. 1044 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2018-09-14 18:15:35,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:35,907 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:15:35,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:35,915 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:36,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:36,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 681 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2018-09-14 18:15:36,646 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 320 proven. 601 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2018-09-14 18:15:37,680 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:15:37,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [16, 6] total 21 [2018-09-14 18:15:37,681 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:37,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:15:37,682 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:15:37,682 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2018-09-14 18:15:37,683 INFO L87 Difference]: Start difference. First operand 72908 states and 75511 transitions. Second operand 5 states. [2018-09-14 18:15:43,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:43,460 INFO L93 Difference]: Finished difference Result 145426 states and 150651 transitions. [2018-09-14 18:15:43,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:15:43,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1000 [2018-09-14 18:15:43,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:43,588 INFO L225 Difference]: With dead ends: 145426 [2018-09-14 18:15:43,589 INFO L226 Difference]: Without dead ends: 73235 [2018-09-14 18:15:43,661 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2026 GetRequests, 1996 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2018-09-14 18:15:43,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73235 states. [2018-09-14 18:15:44,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73235 to 72938. [2018-09-14 18:15:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72938 states. [2018-09-14 18:15:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72938 states to 72938 states and 75339 transitions. [2018-09-14 18:15:44,833 INFO L78 Accepts]: Start accepts. Automaton has 72938 states and 75339 transitions. Word has length 1000 [2018-09-14 18:15:44,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:44,834 INFO L480 AbstractCegarLoop]: Abstraction has 72938 states and 75339 transitions. [2018-09-14 18:15:44,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:15:44,834 INFO L276 IsEmpty]: Start isEmpty. Operand 72938 states and 75339 transitions. [2018-09-14 18:15:44,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1529 [2018-09-14 18:15:44,870 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:44,871 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:44,871 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:44,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1002760450, now seen corresponding path program 1 times [2018-09-14 18:15:44,872 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:44,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:44,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:44,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:44,873 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 384 proven. 1555 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2018-09-14 18:15:48,116 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:48,116 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:15:48,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:48,125 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:48,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 1045 proven. 2 refuted. 0 times theorem prover too weak. 1525 trivial. 0 not checked. [2018-09-14 18:15:49,678 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 1045 proven. 2 refuted. 0 times theorem prover too weak. 1525 trivial. 0 not checked. [2018-09-14 18:15:52,169 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:52,169 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:15:52,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:52,186 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:52,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 1045 proven. 18 refuted. 0 times theorem prover too weak. 1509 trivial. 0 not checked. [2018-09-14 18:15:54,093 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2572 backedges. 1045 proven. 2 refuted. 0 times theorem prover too weak. 1525 trivial. 0 not checked. [2018-09-14 18:15:56,913 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:15:56,914 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5, 6, 5] total 27 [2018-09-14 18:15:56,914 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:15:56,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-14 18:15:56,916 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-14 18:15:56,917 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2018-09-14 18:15:56,917 INFO L87 Difference]: Start difference. First operand 72938 states and 75339 transitions. Second operand 19 states. [2018-09-14 18:16:08,832 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 Received shutdown request... [2018-09-14 18:16:09,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-14 18:16:09,772 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:16:09,778 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:16:09,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:16:09 BoogieIcfgContainer [2018-09-14 18:16:09,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:16:09,779 INFO L168 Benchmark]: Toolchain (without parser) took 225291.88 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-14 18:16:09,780 INFO L168 Benchmark]: CDTParser took 0.22 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 18:16:09,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1830.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:16:09,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 163.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:16:09,782 INFO L168 Benchmark]: Boogie Preprocessor took 645.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 864.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:16:09,783 INFO L168 Benchmark]: RCFGBuilder took 8102.48 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 496.2 MB). Peak memory consumption was 496.2 MB. Max. memory is 7.1 GB. [2018-09-14 18:16:09,784 INFO L168 Benchmark]: TraceAbstraction took 214542.56 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -933.6 MB). Peak memory consumption was 644.5 MB. Max. memory is 7.1 GB. [2018-09-14 18:16:09,788 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1830.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 163.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 645.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 864.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8102.48 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 496.2 MB). Peak memory consumption was 496.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214542.56 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -933.6 MB). Peak memory consumption was 644.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 201]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 201). Cancelled while BasicCegarLoop was constructing difference of abstraction (72938states) and FLOYD_HOARE automaton (currently 34 states, 19 states before enhancement), while ReachableStatesComputation was computing reachable states (8831 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 214.4s OverallTime, 15 OverallIterations, 8 TraceHistogramMax, 155.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4552 SDtfs, 57156 SDslu, 3617 SDs, 0 SdLazy, 112461 SolverSat, 19281 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 111.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25190 GetRequests, 24827 SyntacticMatches, 44 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3594 ImplicationChecksByTransitivity, 15.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74918occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 11.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 10732 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 32.3s InterpolantComputationTime, 21241 NumberOfCodeBlocks, 21241 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 33575 ConstructedInterpolants, 0 QuantifiedInterpolants, 92743287 SizeOfPredicates, 12 NumberOfNonLiveVariables, 17130 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 47 InterpolantComputations, 11 PerfectInterpolantSequences, 44423/49388 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/Problem18_label28_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-16-09-802.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label28_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-16-09-802.csv Completed graceful shutdown