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_label29_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:12:30,447 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:12:30,449 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:12:30,467 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:12:30,467 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:12:30,468 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:12:30,470 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:12:30,472 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:12:30,475 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:12:30,478 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:12:30,485 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:12:30,485 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:12:30,486 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:12:30,488 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:12:30,489 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:12:30,492 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:12:30,493 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:12:30,497 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:12:30,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:12:30,503 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:12:30,504 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:12:30,505 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:12:30,509 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:12:30,510 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:12:30,510 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:12:30,514 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:12:30,515 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:12:30,516 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:12:30,517 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:12:30,518 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:12:30,518 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:12:30,522 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:12:30,522 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:12:30,522 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:12:30,523 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:12:30,524 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:12:30,525 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 18:12:30,544 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:12:30,545 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:12:30,546 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:12:30,546 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:12:30,546 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:12:30,546 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:12:30,547 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:12:30,547 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:12:30,547 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:12:30,547 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:12:30,547 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:12:30,548 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:12:30,548 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:12:30,549 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:12:30,549 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:12:30,549 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:12:30,549 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:12:30,549 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:12:30,549 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:12:30,550 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:12:30,550 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:12:30,550 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:12:30,550 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:12:30,550 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:12:30,551 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:12:30,551 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:12:30,551 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:12:30,551 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:12:30,552 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:12:30,552 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:12:30,552 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:12:30,552 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:12:30,552 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:12:30,615 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:12:30,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:12:30,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:12:30,641 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:12:30,641 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:12:30,642 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label29_true-unreach-call.c [2018-09-14 18:12:30,996 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3e5643c4/a28af60230124ea8987c72af65696282/FLAGfa023e9ee [2018-09-14 18:12:31,432 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:12:31,433 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label29_true-unreach-call.c [2018-09-14 18:12:31,462 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3e5643c4/a28af60230124ea8987c72af65696282/FLAGfa023e9ee [2018-09-14 18:12:31,478 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3e5643c4/a28af60230124ea8987c72af65696282 [2018-09-14 18:12:31,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:12:31,496 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:12:31,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:12:31,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:12:31,505 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:12:31,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:12:31" (1/1) ... [2018-09-14 18:12:31,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560f8b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:31, skipping insertion in model container [2018-09-14 18:12:31,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:12:31" (1/1) ... [2018-09-14 18:12:31,524 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:12:32,608 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:12:32,628 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:12:33,093 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:12:33,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:33 WrapperNode [2018-09-14 18:12:33,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:12:33,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:12:33,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:12:33,243 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:12:33,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:33" (1/1) ... [2018-09-14 18:12:33,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:33" (1/1) ... [2018-09-14 18:12:33,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:12:33,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:12:33,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:12:33,410 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:12:33,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:33" (1/1) ... [2018-09-14 18:12:33,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:33" (1/1) ... [2018-09-14 18:12:33,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:33" (1/1) ... [2018-09-14 18:12:33,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:33" (1/1) ... [2018-09-14 18:12:33,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:33" (1/1) ... [2018-09-14 18:12:33,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:33" (1/1) ... [2018-09-14 18:12:34,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:33" (1/1) ... [2018-09-14 18:12:34,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:12:34,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:12:34,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:12:34,032 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:12:34,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:33" (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 18:12:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:12:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:12:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:12:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:12:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:12:34,113 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:12:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:12:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:12:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:12:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:12:34,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:12:34,114 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:12:42,858 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:12:42,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:12:42 BoogieIcfgContainer [2018-09-14 18:12:42,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:12:42,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:12:42,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:12:42,863 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:12:42,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:12:31" (1/3) ... [2018-09-14 18:12:42,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7b7a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:12:42, skipping insertion in model container [2018-09-14 18:12:42,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:12:33" (2/3) ... [2018-09-14 18:12:42,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c7b7a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:12:42, skipping insertion in model container [2018-09-14 18:12:42,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:12:42" (3/3) ... [2018-09-14 18:12:42,867 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label29_true-unreach-call.c [2018-09-14 18:12:42,877 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:12:42,886 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:12:42,946 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:12:42,947 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:12:42,947 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:12:42,947 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:12:42,947 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:12:42,947 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:12:42,947 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:12:42,947 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:12:42,948 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:12:42,986 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-14 18:12:42,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-14 18:12:42,996 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:12:42,997 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] [2018-09-14 18:12:42,998 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:12:43,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1838383484, now seen corresponding path program 1 times [2018-09-14 18:12:43,005 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:12:43,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:43,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:12:43,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:43,059 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:12:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:12:43,530 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:12:43,649 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 18:12:43,652 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:12:43,652 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:12:43,653 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:12:43,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:12:43,676 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:12:43,677 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:12:43,680 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-14 18:12:50,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:12:50,816 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-14 18:12:50,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:12:50,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-09-14 18:12:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:12:50,848 INFO L225 Difference]: With dead ends: 2251 [2018-09-14 18:12:50,849 INFO L226 Difference]: Without dead ends: 1474 [2018-09-14 18:12:50,861 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:12:50,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-14 18:12:51,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-14 18:12:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-14 18:12:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-09-14 18:12:51,041 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 46 [2018-09-14 18:12:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:12:51,042 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-09-14 18:12:51,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:12:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-09-14 18:12:51,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-14 18:12:51,055 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:12:51,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:12:51,056 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:12:51,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1709557070, now seen corresponding path program 1 times [2018-09-14 18:12:51,058 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:12:51,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:51,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:12:51,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:51,060 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:12:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:12:51,419 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:12:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:12:51,488 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:12:51,488 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:12:51,488 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:12:51,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:12:51,491 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:12:51,491 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:12:51,491 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 5 states. [2018-09-14 18:12:59,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:12:59,243 INFO L93 Difference]: Finished difference Result 3698 states and 6787 transitions. [2018-09-14 18:12:59,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:12:59,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-09-14 18:12:59,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:12:59,261 INFO L225 Difference]: With dead ends: 3698 [2018-09-14 18:12:59,261 INFO L226 Difference]: Without dead ends: 2230 [2018-09-14 18:12:59,265 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:12:59,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2018-09-14 18:12:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2209. [2018-09-14 18:12:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2209 states. [2018-09-14 18:12:59,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3833 transitions. [2018-09-14 18:12:59,342 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3833 transitions. Word has length 118 [2018-09-14 18:12:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:12:59,343 INFO L480 AbstractCegarLoop]: Abstraction has 2209 states and 3833 transitions. [2018-09-14 18:12:59,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:12:59,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3833 transitions. [2018-09-14 18:12:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-09-14 18:12:59,355 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:12:59,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:12:59,356 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:12:59,356 INFO L82 PathProgramCache]: Analyzing trace with hash -188742945, now seen corresponding path program 1 times [2018-09-14 18:12:59,356 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:12:59,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:59,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:12:59,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:12:59,358 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:12:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:12:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:12:59,645 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:12:59,645 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:12:59,645 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:12:59,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:12:59,646 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:12:59,646 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:12:59,647 INFO L87 Difference]: Start difference. First operand 2209 states and 3833 transitions. Second operand 6 states. [2018-09-14 18:13:07,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:07,193 INFO L93 Difference]: Finished difference Result 5866 states and 10122 transitions. [2018-09-14 18:13:07,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:13:07,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-09-14 18:13:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:07,219 INFO L225 Difference]: With dead ends: 5866 [2018-09-14 18:13:07,220 INFO L226 Difference]: Without dead ends: 3663 [2018-09-14 18:13:07,229 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 18:13:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2018-09-14 18:13:07,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3639. [2018-09-14 18:13:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3639 states. [2018-09-14 18:13:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5517 transitions. [2018-09-14 18:13:07,347 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5517 transitions. Word has length 141 [2018-09-14 18:13:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:07,348 INFO L480 AbstractCegarLoop]: Abstraction has 3639 states and 5517 transitions. [2018-09-14 18:13:07,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:13:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5517 transitions. [2018-09-14 18:13:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-14 18:13:07,353 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:07,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:07,353 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:07,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1463465367, now seen corresponding path program 1 times [2018-09-14 18:13:07,354 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:07,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:07,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:07,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:07,356 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:07,686 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:13:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:08,051 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:13:08,052 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:13:08,052 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:13:08,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:13:08,053 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:13:08,053 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:13:08,055 INFO L87 Difference]: Start difference. First operand 3639 states and 5517 transitions. Second operand 6 states. [2018-09-14 18:13:15,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:15,807 INFO L93 Difference]: Finished difference Result 8735 states and 13271 transitions. [2018-09-14 18:13:15,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:13:15,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-09-14 18:13:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:15,841 INFO L225 Difference]: With dead ends: 8735 [2018-09-14 18:13:15,841 INFO L226 Difference]: Without dead ends: 5102 [2018-09-14 18:13:15,853 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:13:15,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2018-09-14 18:13:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 5084. [2018-09-14 18:13:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5084 states. [2018-09-14 18:13:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5084 states to 5084 states and 6940 transitions. [2018-09-14 18:13:15,991 INFO L78 Accepts]: Start accepts. Automaton has 5084 states and 6940 transitions. Word has length 145 [2018-09-14 18:13:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:15,992 INFO L480 AbstractCegarLoop]: Abstraction has 5084 states and 6940 transitions. [2018-09-14 18:13:15,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:13:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5084 states and 6940 transitions. [2018-09-14 18:13:15,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-14 18:13:15,998 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:15,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:15,999 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:15,999 INFO L82 PathProgramCache]: Analyzing trace with hash 2101194106, now seen corresponding path program 1 times [2018-09-14 18:13:15,999 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:16,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:16,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:16,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:16,001 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:16,276 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:13:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:16,403 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:13:16,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:13:16,404 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:13:16,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:13:16,404 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:13:16,404 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:13:16,405 INFO L87 Difference]: Start difference. First operand 5084 states and 6940 transitions. Second operand 6 states. [2018-09-14 18:13:22,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:22,305 INFO L93 Difference]: Finished difference Result 13307 states and 18750 transitions. [2018-09-14 18:13:22,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:13:22,309 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-09-14 18:13:22,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:22,346 INFO L225 Difference]: With dead ends: 13307 [2018-09-14 18:13:22,346 INFO L226 Difference]: Without dead ends: 8229 [2018-09-14 18:13:22,360 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:13:22,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8229 states. [2018-09-14 18:13:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8229 to 8128. [2018-09-14 18:13:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8128 states. [2018-09-14 18:13:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 10817 transitions. [2018-09-14 18:13:22,540 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 10817 transitions. Word has length 176 [2018-09-14 18:13:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:22,540 INFO L480 AbstractCegarLoop]: Abstraction has 8128 states and 10817 transitions. [2018-09-14 18:13:22,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:13:22,540 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 10817 transitions. [2018-09-14 18:13:22,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-09-14 18:13:22,545 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:22,546 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:13:22,546 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash 241142769, now seen corresponding path program 1 times [2018-09-14 18:13:22,547 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:22,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:22,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:22,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:22,548 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:13:22,791 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:22,791 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 18:13:22,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:22,800 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:22,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-09-14 18:13:23,134 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:13:23,495 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:13:23,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-14 18:13:23,496 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:13:23,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:13:23,496 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:13:23,497 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:13:23,497 INFO L87 Difference]: Start difference. First operand 8128 states and 10817 transitions. Second operand 5 states. [2018-09-14 18:13:32,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:32,451 INFO L93 Difference]: Finished difference Result 25829 states and 35540 transitions. [2018-09-14 18:13:32,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:13:32,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 209 [2018-09-14 18:13:32,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:32,541 INFO L225 Difference]: With dead ends: 25829 [2018-09-14 18:13:32,542 INFO L226 Difference]: Without dead ends: 17707 [2018-09-14 18:13:32,572 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 416 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:13:32,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17707 states. [2018-09-14 18:13:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17707 to 17372. [2018-09-14 18:13:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17372 states. [2018-09-14 18:13:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17372 states to 17372 states and 21910 transitions. [2018-09-14 18:13:32,988 INFO L78 Accepts]: Start accepts. Automaton has 17372 states and 21910 transitions. Word has length 209 [2018-09-14 18:13:32,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:32,989 INFO L480 AbstractCegarLoop]: Abstraction has 17372 states and 21910 transitions. [2018-09-14 18:13:32,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:13:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 17372 states and 21910 transitions. [2018-09-14 18:13:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-14 18:13:32,999 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:32,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:33,000 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:33,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1330104734, now seen corresponding path program 1 times [2018-09-14 18:13:33,000 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:33,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:33,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:33,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:33,001 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:13:33,268 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:13:33,268 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:13:33,269 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:13:33,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:13:33,269 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:13:33,270 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:13:33,270 INFO L87 Difference]: Start difference. First operand 17372 states and 21910 transitions. Second operand 4 states. [2018-09-14 18:13:41,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:41,283 INFO L93 Difference]: Finished difference Result 41802 states and 53196 transitions. [2018-09-14 18:13:41,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:13:41,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 270 [2018-09-14 18:13:41,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:41,361 INFO L225 Difference]: With dead ends: 41802 [2018-09-14 18:13:41,362 INFO L226 Difference]: Without dead ends: 24436 [2018-09-14 18:13:41,411 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 18:13:41,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24436 states. [2018-09-14 18:13:41,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24436 to 24434. [2018-09-14 18:13:41,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24434 states. [2018-09-14 18:13:41,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24434 states to 24434 states and 29027 transitions. [2018-09-14 18:13:41,811 INFO L78 Accepts]: Start accepts. Automaton has 24434 states and 29027 transitions. Word has length 270 [2018-09-14 18:13:41,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:41,811 INFO L480 AbstractCegarLoop]: Abstraction has 24434 states and 29027 transitions. [2018-09-14 18:13:41,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:13:41,812 INFO L276 IsEmpty]: Start isEmpty. Operand 24434 states and 29027 transitions. [2018-09-14 18:13:41,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-09-14 18:13:41,823 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:41,823 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:13:41,823 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:41,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1219557644, now seen corresponding path program 1 times [2018-09-14 18:13:41,824 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:41,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:41,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:41,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:41,825 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-09-14 18:13:42,121 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:13:42,121 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:13:42,122 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:13:42,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:13:42,122 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:13:42,123 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:13:42,123 INFO L87 Difference]: Start difference. First operand 24434 states and 29027 transitions. Second operand 4 states. [2018-09-14 18:13:50,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:13:50,643 INFO L93 Difference]: Finished difference Result 88414 states and 108281 transitions. [2018-09-14 18:13:50,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:13:50,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 304 [2018-09-14 18:13:50,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:13:50,834 INFO L225 Difference]: With dead ends: 88414 [2018-09-14 18:13:50,834 INFO L226 Difference]: Without dead ends: 63986 [2018-09-14 18:13:50,887 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 18:13:50,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63986 states. [2018-09-14 18:13:51,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63986 to 59758. [2018-09-14 18:13:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59758 states. [2018-09-14 18:13:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59758 states to 59758 states and 71469 transitions. [2018-09-14 18:13:51,815 INFO L78 Accepts]: Start accepts. Automaton has 59758 states and 71469 transitions. Word has length 304 [2018-09-14 18:13:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:13:51,816 INFO L480 AbstractCegarLoop]: Abstraction has 59758 states and 71469 transitions. [2018-09-14 18:13:51,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:13:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 59758 states and 71469 transitions. [2018-09-14 18:13:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-09-14 18:13:51,865 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:13:51,866 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:51,866 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:13:51,866 INFO L82 PathProgramCache]: Analyzing trace with hash 187052851, now seen corresponding path program 1 times [2018-09-14 18:13:51,866 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:13:51,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:51,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:51,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:13:51,868 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:13:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-14 18:13:52,666 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:52,666 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:13:52,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:52,684 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:52,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:53,259 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-14 18:13:53,259 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-14 18:13:53,981 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:13:53,982 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:13:54,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:13:54,368 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:13:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:13:54,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:13:54,996 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-14 18:13:54,996 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:13:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-14 18:13:55,606 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:13:55,606 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 18:13:55,607 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:13:55,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:13:55,608 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:13:55,608 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:13:55,608 INFO L87 Difference]: Start difference. First operand 59758 states and 71469 transitions. Second operand 9 states. [2018-09-14 18:14:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:02,657 INFO L93 Difference]: Finished difference Result 118981 states and 143513 transitions. [2018-09-14 18:14:02,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 18:14:02,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 437 [2018-09-14 18:14:02,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:02,831 INFO L225 Difference]: With dead ends: 118981 [2018-09-14 18:14:02,831 INFO L226 Difference]: Without dead ends: 59229 [2018-09-14 18:14:02,904 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1766 GetRequests, 1744 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2018-09-14 18:14:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59229 states. [2018-09-14 18:14:03,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59229 to 56176. [2018-09-14 18:14:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56176 states. [2018-09-14 18:14:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56176 states to 56176 states and 62942 transitions. [2018-09-14 18:14:03,703 INFO L78 Accepts]: Start accepts. Automaton has 56176 states and 62942 transitions. Word has length 437 [2018-09-14 18:14:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:03,704 INFO L480 AbstractCegarLoop]: Abstraction has 56176 states and 62942 transitions. [2018-09-14 18:14:03,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:14:03,704 INFO L276 IsEmpty]: Start isEmpty. Operand 56176 states and 62942 transitions. [2018-09-14 18:14:03,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2018-09-14 18:14:03,771 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:03,772 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:03,772 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:03,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1665887872, now seen corresponding path program 1 times [2018-09-14 18:14:03,773 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:03,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:03,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:03,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:03,774 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 243 proven. 194 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 18:14:04,383 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:04,384 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 18:14:04,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:04,393 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:04,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 516 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-09-14 18:14:05,468 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:06,118 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 243 proven. 194 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 18:14:06,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:06,142 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 18:14:06,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:06,160 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:06,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 516 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-09-14 18:14:07,378 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 243 proven. 194 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 18:14:08,533 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:14:08,534 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-09-14 18:14:08,534 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:14:08,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:14:08,536 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:14:08,536 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:14:08,537 INFO L87 Difference]: Start difference. First operand 56176 states and 62942 transitions. Second operand 9 states. [2018-09-14 18:14:26,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:26,907 INFO L93 Difference]: Finished difference Result 158181 states and 184387 transitions. [2018-09-14 18:14:26,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 18:14:26,908 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 697 [2018-09-14 18:14:26,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:27,232 INFO L225 Difference]: With dead ends: 158181 [2018-09-14 18:14:27,232 INFO L226 Difference]: Without dead ends: 102011 [2018-09-14 18:14:27,332 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2810 GetRequests, 2783 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2018-09-14 18:14:27,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102011 states. [2018-09-14 18:14:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102011 to 101231. [2018-09-14 18:14:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101231 states. [2018-09-14 18:14:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101231 states to 101231 states and 116519 transitions. [2018-09-14 18:14:28,958 INFO L78 Accepts]: Start accepts. Automaton has 101231 states and 116519 transitions. Word has length 697 [2018-09-14 18:14:28,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:28,959 INFO L480 AbstractCegarLoop]: Abstraction has 101231 states and 116519 transitions. [2018-09-14 18:14:28,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:14:28,959 INFO L276 IsEmpty]: Start isEmpty. Operand 101231 states and 116519 transitions. [2018-09-14 18:14:29,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2018-09-14 18:14:29,041 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:29,042 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:29,042 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:29,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1490384244, now seen corresponding path program 1 times [2018-09-14 18:14:29,042 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:29,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:29,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:29,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:29,044 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2018-09-14 18:14:29,817 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:14:29,818 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:14:29,818 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:29,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:14:29,819 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:14:29,819 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:14:29,819 INFO L87 Difference]: Start difference. First operand 101231 states and 116519 transitions. Second operand 4 states. [2018-09-14 18:14:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:37,926 INFO L93 Difference]: Finished difference Result 252438 states and 295055 transitions. [2018-09-14 18:14:37,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:14:37,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 752 [2018-09-14 18:14:37,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:38,454 INFO L225 Difference]: With dead ends: 252438 [2018-09-14 18:14:38,455 INFO L226 Difference]: Without dead ends: 151916 [2018-09-14 18:14:38,733 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 18:14:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151916 states. [2018-09-14 18:14:41,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151916 to 149980. [2018-09-14 18:14:41,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149980 states. [2018-09-14 18:14:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149980 states to 149980 states and 169719 transitions. [2018-09-14 18:14:42,214 INFO L78 Accepts]: Start accepts. Automaton has 149980 states and 169719 transitions. Word has length 752 [2018-09-14 18:14:42,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:42,216 INFO L480 AbstractCegarLoop]: Abstraction has 149980 states and 169719 transitions. [2018-09-14 18:14:42,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:14:42,216 INFO L276 IsEmpty]: Start isEmpty. Operand 149980 states and 169719 transitions. [2018-09-14 18:14:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2018-09-14 18:14:42,289 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:42,290 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:14:42,290 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:42,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1109802581, now seen corresponding path program 1 times [2018-09-14 18:14:42,291 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:42,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:42,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:42,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:42,292 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:43,697 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2018-09-14 18:14:43,953 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 3 [2018-09-14 18:14:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 5 proven. 133 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2018-09-14 18:14:44,475 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:14:44,476 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 18:14:44,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:44,492 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:14:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:44,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:14:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2018-09-14 18:14:45,243 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:14:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 117 proven. 236 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-09-14 18:14:47,766 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:14:47,767 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2018-09-14 18:14:47,767 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:47,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:14:47,768 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:14:47,768 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:14:47,768 INFO L87 Difference]: Start difference. First operand 149980 states and 169719 transitions. Second operand 5 states. [2018-09-14 18:14:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:56,412 INFO L93 Difference]: Finished difference Result 306446 states and 347300 transitions. [2018-09-14 18:14:56,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:14:56,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 771 [2018-09-14 18:14:56,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:56,783 INFO L225 Difference]: With dead ends: 306446 [2018-09-14 18:14:56,783 INFO L226 Difference]: Without dead ends: 157175 [2018-09-14 18:14:56,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1561 GetRequests, 1543 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-09-14 18:14:57,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157175 states. [2018-09-14 18:14:59,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157175 to 157146. [2018-09-14 18:14:59,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157146 states. [2018-09-14 18:14:59,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157146 states to 157146 states and 177762 transitions. [2018-09-14 18:14:59,476 INFO L78 Accepts]: Start accepts. Automaton has 157146 states and 177762 transitions. Word has length 771 [2018-09-14 18:14:59,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:59,477 INFO L480 AbstractCegarLoop]: Abstraction has 157146 states and 177762 transitions. [2018-09-14 18:14:59,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:14:59,477 INFO L276 IsEmpty]: Start isEmpty. Operand 157146 states and 177762 transitions. [2018-09-14 18:14:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2018-09-14 18:14:59,564 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:59,564 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:14:59,564 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:59,565 INFO L82 PathProgramCache]: Analyzing trace with hash -660792959, now seen corresponding path program 1 times [2018-09-14 18:14:59,565 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:59,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:59,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:59,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:59,566 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:02,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 24 proven. 174 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2018-09-14 18:15:02,049 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:02,049 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 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 18:15:02,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:02,058 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:02,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2018-09-14 18:15:02,793 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 156 proven. 564 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2018-09-14 18:15:07,458 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:15:07,459 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 6] total 18 [2018-09-14 18:15:07,459 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:07,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:15:07,461 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:15:07,461 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2018-09-14 18:15:07,461 INFO L87 Difference]: Start difference. First operand 157146 states and 177762 transitions. Second operand 5 states. [2018-09-14 18:15:16,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:16,173 INFO L93 Difference]: Finished difference Result 298159 states and 333858 transitions. [2018-09-14 18:15:16,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:15:16,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 940 [2018-09-14 18:15:16,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:16,485 INFO L225 Difference]: With dead ends: 298159 [2018-09-14 18:15:16,485 INFO L226 Difference]: Without dead ends: 141722 [2018-09-14 18:15:16,685 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1902 GetRequests, 1875 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2018-09-14 18:15:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141722 states. [2018-09-14 18:15:18,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141722 to 136748. [2018-09-14 18:15:18,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136748 states. [2018-09-14 18:15:18,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136748 states to 136748 states and 148815 transitions. [2018-09-14 18:15:18,260 INFO L78 Accepts]: Start accepts. Automaton has 136748 states and 148815 transitions. Word has length 940 [2018-09-14 18:15:18,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:18,261 INFO L480 AbstractCegarLoop]: Abstraction has 136748 states and 148815 transitions. [2018-09-14 18:15:18,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:15:18,262 INFO L276 IsEmpty]: Start isEmpty. Operand 136748 states and 148815 transitions. [2018-09-14 18:15:18,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2018-09-14 18:15:18,287 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:18,288 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2018-09-14 18:15:18,289 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:18,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1505259694, now seen corresponding path program 1 times [2018-09-14 18:15:18,289 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:18,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:18,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:18,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:18,291 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:18,851 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 18:15:19,039 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 18:15:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 220 proven. 669 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-09-14 18:15:20,453 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:20,453 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:15:20,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:20,461 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:20,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 817 proven. 2 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2018-09-14 18:15:21,796 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:22,070 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2018-09-14 18:15:23,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 287 proven. 242 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2018-09-14 18:15:23,809 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:23,809 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:15:23,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:23,825 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:24,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 750 proven. 69 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2018-09-14 18:15:25,564 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 171 proven. 718 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-09-14 18:15:27,117 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:15:27,118 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 5, 8, 8] total 27 [2018-09-14 18:15:27,118 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:15:27,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-14 18:15:27,120 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-14 18:15:27,121 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2018-09-14 18:15:27,121 INFO L87 Difference]: Start difference. First operand 136748 states and 148815 transitions. Second operand 16 states. [2018-09-14 18:15:35,145 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-09-14 18:15:53,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:53,546 INFO L93 Difference]: Finished difference Result 271736 states and 296012 transitions. [2018-09-14 18:15:53,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-14 18:15:53,546 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 958 [2018-09-14 18:15:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:53,898 INFO L225 Difference]: With dead ends: 271736 [2018-09-14 18:15:53,898 INFO L226 Difference]: Without dead ends: 134539 [2018-09-14 18:15:54,075 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3931 GetRequests, 3857 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=972, Invalid=4140, Unknown=0, NotChecked=0, Total=5112 [2018-09-14 18:15:54,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134539 states. [2018-09-14 18:15:55,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134539 to 133688. [2018-09-14 18:15:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133688 states. [2018-09-14 18:15:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133688 states to 133688 states and 142992 transitions. [2018-09-14 18:15:55,803 INFO L78 Accepts]: Start accepts. Automaton has 133688 states and 142992 transitions. Word has length 958 [2018-09-14 18:15:55,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:55,804 INFO L480 AbstractCegarLoop]: Abstraction has 133688 states and 142992 transitions. [2018-09-14 18:15:55,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-14 18:15:55,804 INFO L276 IsEmpty]: Start isEmpty. Operand 133688 states and 142992 transitions. [2018-09-14 18:15:55,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1469 [2018-09-14 18:15:55,849 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:55,850 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:15:55,850 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:55,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1376442153, now seen corresponding path program 1 times [2018-09-14 18:15:55,851 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:55,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:55,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:55,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:55,852 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 582 proven. 1090 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2018-09-14 18:16:01,863 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:01,863 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:16:01,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:01,873 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:02,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 1531 proven. 2 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2018-09-14 18:16:03,421 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:05,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 832 proven. 213 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2018-09-14 18:16:05,066 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:05,066 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:16:05,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:05,082 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:05,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 1526 proven. 14 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2018-09-14 18:16:06,800 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 832 proven. 213 refuted. 0 times theorem prover too weak. 1061 trivial. 0 not checked. [2018-09-14 18:16:08,539 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:16:08,540 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 5, 5, 5, 5] total 25 [2018-09-14 18:16:08,540 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:16:08,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-14 18:16:08,542 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-14 18:16:08,542 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2018-09-14 18:16:08,543 INFO L87 Difference]: Start difference. First operand 133688 states and 142992 transitions. Second operand 22 states. Received shutdown request... [2018-09-14 18:16:11,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:16:11,162 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:16:11,169 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:16:11,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:16:11 BoogieIcfgContainer [2018-09-14 18:16:11,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:16:11,171 INFO L168 Benchmark]: Toolchain (without parser) took 219677.73 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-14 18:16:11,172 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 18:16:11,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1744.95 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 18:16:11,173 INFO L168 Benchmark]: Boogie Procedure Inliner took 166.89 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 18:16:11,174 INFO L168 Benchmark]: Boogie Preprocessor took 621.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.6 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 18:16:11,175 INFO L168 Benchmark]: RCFGBuilder took 8827.50 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: 487.2 MB). Peak memory consumption was 487.2 MB. Max. memory is 7.1 GB. [2018-09-14 18:16:11,176 INFO L168 Benchmark]: TraceAbstraction took 208309.82 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.5 GB). Free memory was 1.8 GB in the beginning and 3.6 GB in the end (delta: -1.8 GB). Peak memory consumption was 696.3 MB. Max. memory is 7.1 GB. [2018-09-14 18:16:11,180 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1744.95 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 166.89 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 621.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.6 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 8827.50 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: 487.2 MB). Peak memory consumption was 487.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208309.82 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.5 GB). Free memory was 1.8 GB in the beginning and 3.6 GB in the end (delta: -1.8 GB). Peak memory consumption was 696.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while BasicCegarLoop was constructing difference of abstraction (133688states) and FLOYD_HOARE automaton (currently 8 states, 22 states before enhancement), while ReachableStatesComputation was computing reachable states (412 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 208.2s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 145.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4635 SDtfs, 54414 SDslu, 2954 SDs, 0 SdLazy, 91526 SolverSat, 17190 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 107.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18359 GetRequests, 18102 SyntacticMatches, 45 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2275 ImplicationChecksByTransitivity, 12.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157146occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 16352 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 34.9s InterpolantComputationTime, 16472 NumberOfCodeBlocks, 16472 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 25475 ConstructedInterpolants, 0 QuantifiedInterpolants, 89454322 SizeOfPredicates, 15 NumberOfNonLiveVariables, 12042 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 37 InterpolantComputations, 11 PerfectInterpolantSequences, 22464/27533 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_label29_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-16-11-195.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label29_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-16-11-195.csv Completed graceful shutdown