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/Problem15_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:58:43,358 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:58:43,360 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:58:43,373 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:58:43,373 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:58:43,374 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:58:43,375 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:58:43,377 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:58:43,379 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:58:43,380 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:58:43,381 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:58:43,381 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:58:43,382 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:58:43,383 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:58:43,384 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:58:43,385 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:58:43,385 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:58:43,389 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:58:43,395 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:58:43,398 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:58:43,399 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:58:43,402 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:58:43,407 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:58:43,407 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:58:43,407 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:58:43,408 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:58:43,412 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:58:43,413 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:58:43,416 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:58:43,417 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:58:43,417 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:58:43,418 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:58:43,418 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:58:43,418 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:58:43,422 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:58:43,424 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:58:43,424 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 [2018-09-18 11:58:43,451 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:58:43,451 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:58:43,452 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:58:43,452 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:58:43,452 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:58:43,455 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:58:43,455 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:58:43,455 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:58:43,455 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:58:43,456 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:58:43,456 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:58:43,456 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:58:43,457 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:58:43,457 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:58:43,457 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:58:43,458 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:58:43,458 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:58:43,459 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:58:43,459 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:58:43,459 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:58:43,460 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:58:43,461 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:58:43,461 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:58:43,461 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:58:43,461 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:58:43,461 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:58:43,462 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:58:43,462 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:58:43,462 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:58:43,462 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:58:43,462 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:58:43,463 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:58:43,463 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:58:43,463 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:58:43,525 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:58:43,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:58:43,546 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:58:43,548 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:58:43,548 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:58:43,549 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c [2018-09-18 11:58:43,786 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e659682e/4d367d0805684704afaf1edf6485f73f/FLAG314367b78 [2018-09-18 11:58:44,227 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:58:44,229 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label46_true-unreach-call.c [2018-09-18 11:58:44,251 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e659682e/4d367d0805684704afaf1edf6485f73f/FLAG314367b78 [2018-09-18 11:58:44,267 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e659682e/4d367d0805684704afaf1edf6485f73f [2018-09-18 11:58:44,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:58:44,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:58:44,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:58:44,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:58:44,291 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:58:44,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:58:44" (1/1) ... [2018-09-18 11:58:44,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e0d2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:44, skipping insertion in model container [2018-09-18 11:58:44,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:58:44" (1/1) ... [2018-09-18 11:58:44,309 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:58:45,235 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:58:45,253 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:58:45,504 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:58:45,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:45 WrapperNode [2018-09-18 11:58:45,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:58:45,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:58:45,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:58:45,648 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:58:45,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:45" (1/1) ... [2018-09-18 11:58:45,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:45" (1/1) ... [2018-09-18 11:58:45,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:58:45,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:58:45,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:58:45,875 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:58:46,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:45" (1/1) ... [2018-09-18 11:58:46,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:45" (1/1) ... [2018-09-18 11:58:46,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:45" (1/1) ... [2018-09-18 11:58:46,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:45" (1/1) ... [2018-09-18 11:58:46,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:45" (1/1) ... [2018-09-18 11:58:46,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:45" (1/1) ... [2018-09-18 11:58:46,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:45" (1/1) ... [2018-09-18 11:58:46,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:58:46,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:58:46,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:58:46,570 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:58:46,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:45" (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 [2018-09-18 11:58:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:58:46,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:58:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:58:46,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:58:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:58:46,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:58:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:58:46,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:58:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:58:46,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:58:55,574 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:58:55,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:58:55 BoogieIcfgContainer [2018-09-18 11:58:55,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:58:55,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:58:55,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:58:55,579 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:58:55,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:58:44" (1/3) ... [2018-09-18 11:58:55,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c42f4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:58:55, skipping insertion in model container [2018-09-18 11:58:55,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:58:45" (2/3) ... [2018-09-18 11:58:55,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c42f4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:58:55, skipping insertion in model container [2018-09-18 11:58:55,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:58:55" (3/3) ... [2018-09-18 11:58:55,584 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label46_true-unreach-call.c [2018-09-18 11:58:55,595 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:58:55,604 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:58:55,665 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:58:55,666 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:58:55,666 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:58:55,666 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:58:55,667 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:58:55,667 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:58:55,667 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:58:55,667 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:58:55,667 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:58:55,699 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-18 11:58:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-18 11:58:55,714 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:58:55,715 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:58:55,717 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:58:55,723 INFO L82 PathProgramCache]: Analyzing trace with hash -171109996, now seen corresponding path program 1 times [2018-09-18 11:58:55,726 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:58:55,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:55,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:58:55,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:58:55,778 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:58:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:58:56,222 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:58:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:58:56,362 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:58:56,362 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:58:56,362 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:58:56,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:58:56,385 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:58:56,386 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:58:56,389 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-09-18 11:59:00,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:00,507 INFO L93 Difference]: Finished difference Result 1198 states and 2158 transitions. [2018-09-18 11:59:00,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:59:00,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-09-18 11:59:00,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:00,538 INFO L225 Difference]: With dead ends: 1198 [2018-09-18 11:59:00,538 INFO L226 Difference]: Without dead ends: 758 [2018-09-18 11:59:00,548 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:59:00,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2018-09-18 11:59:00,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 754. [2018-09-18 11:59:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 754 states. [2018-09-18 11:59:00,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1328 transitions. [2018-09-18 11:59:00,689 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1328 transitions. Word has length 50 [2018-09-18 11:59:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:00,690 INFO L480 AbstractCegarLoop]: Abstraction has 754 states and 1328 transitions. [2018-09-18 11:59:00,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:59:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1328 transitions. [2018-09-18 11:59:00,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-18 11:59:00,700 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:00,701 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:59:00,701 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:00,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1340083984, now seen corresponding path program 1 times [2018-09-18 11:59:00,702 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:00,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:00,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:00,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:00,707 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:59:01,038 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:59:01,038 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:59:01,038 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:01,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:59:01,040 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:59:01,041 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:59:01,041 INFO L87 Difference]: Start difference. First operand 754 states and 1328 transitions. Second operand 5 states. [2018-09-18 11:59:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:08,727 INFO L93 Difference]: Finished difference Result 2229 states and 3961 transitions. [2018-09-18 11:59:08,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:59:08,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-09-18 11:59:08,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:08,742 INFO L225 Difference]: With dead ends: 2229 [2018-09-18 11:59:08,742 INFO L226 Difference]: Without dead ends: 1481 [2018-09-18 11:59:08,747 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:59:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2018-09-18 11:59:08,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1449. [2018-09-18 11:59:08,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1449 states. [2018-09-18 11:59:08,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2254 transitions. [2018-09-18 11:59:08,825 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2254 transitions. Word has length 124 [2018-09-18 11:59:08,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:08,826 INFO L480 AbstractCegarLoop]: Abstraction has 1449 states and 2254 transitions. [2018-09-18 11:59:08,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:59:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2254 transitions. [2018-09-18 11:59:08,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-18 11:59:08,839 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:08,840 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:59:08,841 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:08,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1528606616, now seen corresponding path program 1 times [2018-09-18 11:59:08,841 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:08,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:08,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:08,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:08,844 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:59:09,125 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:59:09,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:59:09,126 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:09,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:59:09,127 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:59:09,127 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:59:09,127 INFO L87 Difference]: Start difference. First operand 1449 states and 2254 transitions. Second operand 6 states. [2018-09-18 11:59:19,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:19,458 INFO L93 Difference]: Finished difference Result 4188 states and 6605 transitions. [2018-09-18 11:59:19,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:59:19,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-09-18 11:59:19,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:19,484 INFO L225 Difference]: With dead ends: 4188 [2018-09-18 11:59:19,484 INFO L226 Difference]: Without dead ends: 2745 [2018-09-18 11:59:19,495 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 [2018-09-18 11:59:19,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2018-09-18 11:59:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 2711. [2018-09-18 11:59:19,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2018-09-18 11:59:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3819 transitions. [2018-09-18 11:59:19,692 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3819 transitions. Word has length 136 [2018-09-18 11:59:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:19,693 INFO L480 AbstractCegarLoop]: Abstraction has 2711 states and 3819 transitions. [2018-09-18 11:59:19,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:59:19,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3819 transitions. [2018-09-18 11:59:19,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-18 11:59:19,698 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:19,698 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:59:19,699 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:19,700 INFO L82 PathProgramCache]: Analyzing trace with hash -929559410, now seen corresponding path program 1 times [2018-09-18 11:59:19,701 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:19,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:19,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:19,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:19,702 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:19,982 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:59:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:59:20,033 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:59:20,033 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:59:20,034 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:20,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:59:20,035 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:59:20,035 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:59:20,035 INFO L87 Difference]: Start difference. First operand 2711 states and 3819 transitions. Second operand 6 states. [2018-09-18 11:59:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:27,178 INFO L93 Difference]: Finished difference Result 6682 states and 9546 transitions. [2018-09-18 11:59:27,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:59:27,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-09-18 11:59:27,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:27,202 INFO L225 Difference]: With dead ends: 6682 [2018-09-18 11:59:27,202 INFO L226 Difference]: Without dead ends: 3977 [2018-09-18 11:59:27,214 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 [2018-09-18 11:59:27,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2018-09-18 11:59:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 3953. [2018-09-18 11:59:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3953 states. [2018-09-18 11:59:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5247 transitions. [2018-09-18 11:59:27,326 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5247 transitions. Word has length 137 [2018-09-18 11:59:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:27,326 INFO L480 AbstractCegarLoop]: Abstraction has 3953 states and 5247 transitions. [2018-09-18 11:59:27,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:59:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5247 transitions. [2018-09-18 11:59:27,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-09-18 11:59:27,334 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:27,334 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:59:27,334 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:27,335 INFO L82 PathProgramCache]: Analyzing trace with hash -470998967, now seen corresponding path program 1 times [2018-09-18 11:59:27,335 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:27,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:27,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:27,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:27,336 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:59:27,858 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:59:27,858 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:59:27,858 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:27,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:59:27,859 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:59:27,859 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:59:27,860 INFO L87 Difference]: Start difference. First operand 3953 states and 5247 transitions. Second operand 6 states. [2018-09-18 11:59:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:42,003 INFO L93 Difference]: Finished difference Result 14072 states and 19014 transitions. [2018-09-18 11:59:42,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:59:42,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-09-18 11:59:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:42,052 INFO L225 Difference]: With dead ends: 14072 [2018-09-18 11:59:42,052 INFO L226 Difference]: Without dead ends: 10125 [2018-09-18 11:59:42,075 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:59:42,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10125 states. [2018-09-18 11:59:42,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10125 to 9916. [2018-09-18 11:59:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9916 states. [2018-09-18 11:59:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9916 states to 9916 states and 12557 transitions. [2018-09-18 11:59:42,306 INFO L78 Accepts]: Start accepts. Automaton has 9916 states and 12557 transitions. Word has length 177 [2018-09-18 11:59:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:42,306 INFO L480 AbstractCegarLoop]: Abstraction has 9916 states and 12557 transitions. [2018-09-18 11:59:42,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:59:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 9916 states and 12557 transitions. [2018-09-18 11:59:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-09-18 11:59:42,313 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:42,313 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:59:42,314 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:42,314 INFO L82 PathProgramCache]: Analyzing trace with hash 933056982, now seen corresponding path program 1 times [2018-09-18 11:59:42,314 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:42,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:42,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:42,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:42,315 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:59:42,623 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:59:42,624 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:59:42,624 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:42,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:59:42,625 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:59:42,625 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:59:42,625 INFO L87 Difference]: Start difference. First operand 9916 states and 12557 transitions. Second operand 4 states. [2018-09-18 11:59:47,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:47,739 INFO L93 Difference]: Finished difference Result 26048 states and 34184 transitions. [2018-09-18 11:59:47,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:59:47,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2018-09-18 11:59:47,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:47,804 INFO L225 Difference]: With dead ends: 26048 [2018-09-18 11:59:47,804 INFO L226 Difference]: Without dead ends: 16138 [2018-09-18 11:59:47,853 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 [2018-09-18 11:59:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16138 states. [2018-09-18 11:59:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16138 to 15819. [2018-09-18 11:59:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15819 states. [2018-09-18 11:59:48,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15819 states to 15819 states and 19538 transitions. [2018-09-18 11:59:48,357 INFO L78 Accepts]: Start accepts. Automaton has 15819 states and 19538 transitions. Word has length 205 [2018-09-18 11:59:48,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:48,358 INFO L480 AbstractCegarLoop]: Abstraction has 15819 states and 19538 transitions. [2018-09-18 11:59:48,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:59:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 15819 states and 19538 transitions. [2018-09-18 11:59:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-18 11:59:48,368 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:48,369 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:59:48,369 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:48,369 INFO L82 PathProgramCache]: Analyzing trace with hash -75498616, now seen corresponding path program 1 times [2018-09-18 11:59:48,370 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:48,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:48,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:48,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:48,371 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:48,620 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-09-18 11:59:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 11:59:48,642 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:59:48,642 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:59:48,643 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:48,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:59:48,644 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:59:48,644 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:59:48,644 INFO L87 Difference]: Start difference. First operand 15819 states and 19538 transitions. Second operand 3 states. [2018-09-18 11:59:52,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:59:52,659 INFO L93 Difference]: Finished difference Result 36397 states and 46181 transitions. [2018-09-18 11:59:52,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:59:52,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2018-09-18 11:59:52,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:59:52,738 INFO L225 Difference]: With dead ends: 36397 [2018-09-18 11:59:52,739 INFO L226 Difference]: Without dead ends: 20584 [2018-09-18 11:59:52,776 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:59:52,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20584 states. [2018-09-18 11:59:53,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20584 to 20530. [2018-09-18 11:59:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20530 states. [2018-09-18 11:59:53,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20530 states to 20530 states and 25907 transitions. [2018-09-18 11:59:53,195 INFO L78 Accepts]: Start accepts. Automaton has 20530 states and 25907 transitions. Word has length 218 [2018-09-18 11:59:53,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:59:53,196 INFO L480 AbstractCegarLoop]: Abstraction has 20530 states and 25907 transitions. [2018-09-18 11:59:53,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:59:53,196 INFO L276 IsEmpty]: Start isEmpty. Operand 20530 states and 25907 transitions. [2018-09-18 11:59:53,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-09-18 11:59:53,212 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:59:53,212 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:59:53,212 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:59:53,213 INFO L82 PathProgramCache]: Analyzing trace with hash 976466900, now seen corresponding path program 1 times [2018-09-18 11:59:53,213 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:59:53,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:53,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:53,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:59:53,214 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:59:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:59:53,887 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:59:53,887 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 [2018-09-18 11:59:53,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:59:53,904 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:59:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:59:54,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:59:55,480 WARN L178 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-09-18 11:59:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-18 11:59:55,563 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:59:55,988 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-09-18 11:59:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 86 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:59:57,339 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:59:57,339 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-18 11:59:57,340 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:59:57,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:59:57,340 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:59:57,340 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:59:57,341 INFO L87 Difference]: Start difference. First operand 20530 states and 25907 transitions. Second operand 5 states. [2018-09-18 12:00:07,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:00:07,331 INFO L93 Difference]: Finished difference Result 42026 states and 53197 transitions. [2018-09-18 12:00:07,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:00:07,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2018-09-18 12:00:07,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:00:07,443 INFO L225 Difference]: With dead ends: 42026 [2018-09-18 12:00:07,443 INFO L226 Difference]: Without dead ends: 21502 [2018-09-18 12:00:07,501 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 458 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-09-18 12:00:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21502 states. [2018-09-18 12:00:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21502 to 20497. [2018-09-18 12:00:08,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20497 states. [2018-09-18 12:00:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20497 states to 20497 states and 25848 transitions. [2018-09-18 12:00:08,072 INFO L78 Accepts]: Start accepts. Automaton has 20497 states and 25848 transitions. Word has length 231 [2018-09-18 12:00:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:00:08,072 INFO L480 AbstractCegarLoop]: Abstraction has 20497 states and 25848 transitions. [2018-09-18 12:00:08,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:00:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 20497 states and 25848 transitions. [2018-09-18 12:00:08,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-09-18 12:00:08,088 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:00:08,088 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:00:08,088 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:00:08,089 INFO L82 PathProgramCache]: Analyzing trace with hash 198522603, now seen corresponding path program 1 times [2018-09-18 12:00:08,089 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:00:08,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:08,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:08,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:08,090 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:00:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:09,212 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-18 12:00:09,660 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-18 12:00:09,949 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-18 12:00:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 213 proven. 169 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:00:10,339 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:00:10,339 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-18 12:00:10,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:10,544 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:00:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:10,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:00:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 317 proven. 26 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-18 12:00:11,009 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:00:11,166 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-09-18 12:00:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 139 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:00:11,838 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:00:11,839 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 [2018-09-18 12:00:11,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:11,855 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:00:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:12,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:00:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 267 proven. 26 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-18 12:00:12,342 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:00:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 139 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:00:12,760 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:00:12,760 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-09-18 12:00:12,760 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:00:12,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-18 12:00:12,762 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-18 12:00:12,762 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2018-09-18 12:00:12,763 INFO L87 Difference]: Start difference. First operand 20497 states and 25848 transitions. Second operand 14 states. [2018-09-18 12:00:40,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:00:40,109 INFO L93 Difference]: Finished difference Result 46190 states and 59781 transitions. [2018-09-18 12:00:40,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-18 12:00:40,110 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 327 [2018-09-18 12:00:40,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:00:40,224 INFO L225 Difference]: With dead ends: 46190 [2018-09-18 12:00:40,225 INFO L226 Difference]: Without dead ends: 24483 [2018-09-18 12:00:40,453 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1368 GetRequests, 1319 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=543, Invalid=1809, Unknown=0, NotChecked=0, Total=2352 [2018-09-18 12:00:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24483 states. [2018-09-18 12:00:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24483 to 22955. [2018-09-18 12:00:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22955 states. [2018-09-18 12:00:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22955 states to 22955 states and 28987 transitions. [2018-09-18 12:00:40,842 INFO L78 Accepts]: Start accepts. Automaton has 22955 states and 28987 transitions. Word has length 327 [2018-09-18 12:00:40,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:00:40,843 INFO L480 AbstractCegarLoop]: Abstraction has 22955 states and 28987 transitions. [2018-09-18 12:00:40,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-18 12:00:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 22955 states and 28987 transitions. [2018-09-18 12:00:40,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-09-18 12:00:40,870 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:00:40,870 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:00:40,871 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:00:40,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1843776018, now seen corresponding path program 1 times [2018-09-18 12:00:40,871 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:00:40,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:40,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:40,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:00:40,872 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:00:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:41,922 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-18 12:00:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 213 proven. 173 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:00:42,302 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:00:42,302 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 [2018-09-18 12:00:42,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:42,309 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:00:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:42,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:00:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 321 proven. 26 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-18 12:00:42,821 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:00:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 139 proven. 247 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:00:43,436 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:00:43,436 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-18 12:00:43,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:00:43,454 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:00:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:00:43,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:00:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 271 proven. 26 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-18 12:00:44,378 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:00:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 139 proven. 247 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:00:45,162 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:00:45,162 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-09-18 12:00:45,162 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:00:45,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-18 12:00:45,164 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-18 12:00:45,164 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2018-09-18 12:00:45,164 INFO L87 Difference]: Start difference. First operand 22955 states and 28987 transitions. Second operand 14 states. [2018-09-18 12:01:12,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:01:12,073 INFO L93 Difference]: Finished difference Result 48073 states and 61416 transitions. [2018-09-18 12:01:12,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-18 12:01:12,074 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 412 [2018-09-18 12:01:12,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:01:12,148 INFO L225 Difference]: With dead ends: 48073 [2018-09-18 12:01:12,148 INFO L226 Difference]: Without dead ends: 23905 [2018-09-18 12:01:12,201 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1708 GetRequests, 1656 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=540, Invalid=1812, Unknown=0, NotChecked=0, Total=2352 [2018-09-18 12:01:12,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23905 states. [2018-09-18 12:01:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23905 to 22948. [2018-09-18 12:01:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22948 states. [2018-09-18 12:01:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22948 states to 22948 states and 28701 transitions. [2018-09-18 12:01:12,617 INFO L78 Accepts]: Start accepts. Automaton has 22948 states and 28701 transitions. Word has length 412 [2018-09-18 12:01:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:01:12,618 INFO L480 AbstractCegarLoop]: Abstraction has 22948 states and 28701 transitions. [2018-09-18 12:01:12,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-18 12:01:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 22948 states and 28701 transitions. [2018-09-18 12:01:12,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2018-09-18 12:01:12,650 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:01:12,651 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:01:12,651 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:01:12,651 INFO L82 PathProgramCache]: Analyzing trace with hash -174275912, now seen corresponding path program 1 times [2018-09-18 12:01:12,651 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:01:12,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:12,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:12,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:12,653 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:01:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 140 proven. 6 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-09-18 12:01:13,155 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:01:13,155 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 [2018-09-18 12:01:13,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:13,164 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:01:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:13,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:01:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-18 12:01:14,277 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:01:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 213 proven. 80 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-09-18 12:01:14,643 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:01:14,643 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:01:14,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:14,661 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:01:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:14,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:01:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-09-18 12:01:15,335 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:01:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 137 proven. 171 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-18 12:01:15,979 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:01:15,979 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 17 [2018-09-18 12:01:15,979 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:01:15,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 12:01:15,980 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 12:01:15,981 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-09-18 12:01:15,981 INFO L87 Difference]: Start difference. First operand 22948 states and 28701 transitions. Second operand 10 states. [2018-09-18 12:01:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:01:37,332 INFO L93 Difference]: Finished difference Result 72071 states and 96815 transitions. [2018-09-18 12:01:37,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-18 12:01:37,332 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 469 [2018-09-18 12:01:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:01:37,480 INFO L225 Difference]: With dead ends: 72071 [2018-09-18 12:01:37,481 INFO L226 Difference]: Without dead ends: 49437 [2018-09-18 12:01:37,570 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1946 GetRequests, 1886 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=631, Invalid=2791, Unknown=0, NotChecked=0, Total=3422 [2018-09-18 12:01:37,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49437 states. [2018-09-18 12:01:38,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49437 to 47958. [2018-09-18 12:01:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47958 states. [2018-09-18 12:01:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47958 states to 47958 states and 59292 transitions. [2018-09-18 12:01:38,585 INFO L78 Accepts]: Start accepts. Automaton has 47958 states and 59292 transitions. Word has length 469 [2018-09-18 12:01:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:01:38,586 INFO L480 AbstractCegarLoop]: Abstraction has 47958 states and 59292 transitions. [2018-09-18 12:01:38,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 12:01:38,587 INFO L276 IsEmpty]: Start isEmpty. Operand 47958 states and 59292 transitions. [2018-09-18 12:01:38,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2018-09-18 12:01:38,622 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:01:38,622 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:01:38,623 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:01:38,623 INFO L82 PathProgramCache]: Analyzing trace with hash 45341637, now seen corresponding path program 1 times [2018-09-18 12:01:38,623 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:01:38,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:38,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:38,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:38,624 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:01:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:39,094 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:01:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 210 proven. 86 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-09-18 12:01:39,739 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:01:39,739 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 [2018-09-18 12:01:39,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:39,750 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:01:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:39,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:01:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 12:01:40,144 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:01:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 12:01:40,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:01:40,681 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 [2018-09-18 12:01:40,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:40,698 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:01:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:41,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:01:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 12:01:41,243 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:01:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 362 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-18 12:01:41,601 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:01:41,601 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 13 [2018-09-18 12:01:41,602 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:01:41,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-18 12:01:41,603 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-18 12:01:41,603 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:01:41,603 INFO L87 Difference]: Start difference. First operand 47958 states and 59292 transitions. Second operand 11 states. [2018-09-18 12:01:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:01:53,651 INFO L93 Difference]: Finished difference Result 99003 states and 124012 transitions. [2018-09-18 12:01:53,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-18 12:01:53,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 557 [2018-09-18 12:01:53,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:01:53,801 INFO L225 Difference]: With dead ends: 99003 [2018-09-18 12:01:53,801 INFO L226 Difference]: Without dead ends: 51359 [2018-09-18 12:01:53,915 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2267 GetRequests, 2231 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2018-09-18 12:01:53,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51359 states. [2018-09-18 12:01:54,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51359 to 49781. [2018-09-18 12:01:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49781 states. [2018-09-18 12:01:54,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49781 states to 49781 states and 56722 transitions. [2018-09-18 12:01:54,651 INFO L78 Accepts]: Start accepts. Automaton has 49781 states and 56722 transitions. Word has length 557 [2018-09-18 12:01:54,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:01:54,652 INFO L480 AbstractCegarLoop]: Abstraction has 49781 states and 56722 transitions. [2018-09-18 12:01:54,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-18 12:01:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 49781 states and 56722 transitions. [2018-09-18 12:01:54,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2018-09-18 12:01:54,675 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:01:54,676 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-18 12:01:54,676 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:01:54,677 INFO L82 PathProgramCache]: Analyzing trace with hash 40220867, now seen corresponding path program 1 times [2018-09-18 12:01:54,677 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:01:54,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:54,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:54,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:01:54,678 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:01:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 429 proven. 2 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-09-18 12:01:55,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:01:55,139 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 [2018-09-18 12:01:55,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:55,149 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:01:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:55,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:01:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 429 proven. 2 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-09-18 12:01:55,557 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:01:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 429 proven. 2 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-09-18 12:01:55,910 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:01:55,911 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 [2018-09-18 12:01:55,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:01:55,927 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:01:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:01:56,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:01:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 429 proven. 2 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-09-18 12:01:56,815 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:01:57,131 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 429 proven. 2 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2018-09-18 12:01:57,133 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:01:57,134 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 8 [2018-09-18 12:01:57,134 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:01:57,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:01:57,135 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:01:57,135 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:01:57,136 INFO L87 Difference]: Start difference. First operand 49781 states and 56722 transitions. Second operand 6 states. [2018-09-18 12:02:08,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:02:08,261 INFO L93 Difference]: Finished difference Result 126419 states and 148000 transitions. [2018-09-18 12:02:08,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 12:02:08,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 587 [2018-09-18 12:02:08,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:02:08,439 INFO L225 Difference]: With dead ends: 126419 [2018-09-18 12:02:08,439 INFO L226 Difference]: Without dead ends: 66780 [2018-09-18 12:02:08,543 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2361 GetRequests, 2346 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:02:08,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66780 states. [2018-09-18 12:02:09,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66780 to 63564. [2018-09-18 12:02:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63564 states. [2018-09-18 12:02:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63564 states to 63564 states and 70757 transitions. [2018-09-18 12:02:09,473 INFO L78 Accepts]: Start accepts. Automaton has 63564 states and 70757 transitions. Word has length 587 [2018-09-18 12:02:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:02:09,474 INFO L480 AbstractCegarLoop]: Abstraction has 63564 states and 70757 transitions. [2018-09-18 12:02:09,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:02:09,475 INFO L276 IsEmpty]: Start isEmpty. Operand 63564 states and 70757 transitions. [2018-09-18 12:02:09,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2018-09-18 12:02:09,496 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:02:09,496 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:02:09,497 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:02:09,497 INFO L82 PathProgramCache]: Analyzing trace with hash -398381828, now seen corresponding path program 1 times [2018-09-18 12:02:09,497 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:02:09,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:09,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:09,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:09,499 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:02:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 257 proven. 124 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2018-09-18 12:02:10,516 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:02:10,516 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:02:10,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:10,524 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:02:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:10,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:02:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 484 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-18 12:02:11,237 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:02:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 257 proven. 124 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2018-09-18 12:02:11,540 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:02:11,541 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:02:11,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:11,558 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:02:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:11,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:02:12,150 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 484 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-18 12:02:12,150 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:02:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 257 proven. 124 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2018-09-18 12:02:12,700 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:02:12,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:02:12,700 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:02:12,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:02:12,702 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:02:12,702 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:02:12,703 INFO L87 Difference]: Start difference. First operand 63564 states and 70757 transitions. Second operand 9 states. [2018-09-18 12:02:21,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:02:21,478 INFO L93 Difference]: Finished difference Result 129809 states and 145768 transitions. [2018-09-18 12:02:21,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-18 12:02:21,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 615 [2018-09-18 12:02:21,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:02:21,628 INFO L225 Difference]: With dead ends: 129809 [2018-09-18 12:02:21,629 INFO L226 Difference]: Without dead ends: 66559 [2018-09-18 12:02:21,716 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2490 GetRequests, 2462 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-18 12:02:21,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66559 states. [2018-09-18 12:02:22,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66559 to 66039. [2018-09-18 12:02:22,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66039 states. [2018-09-18 12:02:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66039 states to 66039 states and 72696 transitions. [2018-09-18 12:02:22,601 INFO L78 Accepts]: Start accepts. Automaton has 66039 states and 72696 transitions. Word has length 615 [2018-09-18 12:02:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:02:22,602 INFO L480 AbstractCegarLoop]: Abstraction has 66039 states and 72696 transitions. [2018-09-18 12:02:22,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:02:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 66039 states and 72696 transitions. [2018-09-18 12:02:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2018-09-18 12:02:22,613 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:02:22,613 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:02:22,614 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:02:22,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1364163198, now seen corresponding path program 1 times [2018-09-18 12:02:22,614 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:02:22,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:22,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:22,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:22,615 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:02:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:23,363 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-18 12:02:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2018-09-18 12:02:23,935 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:02:23,936 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:02:23,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:23,943 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:02:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:24,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:02:24,475 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 21 [2018-09-18 12:02:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2018-09-18 12:02:24,799 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:02:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2018-09-18 12:02:25,039 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:02:25,040 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-09-18 12:02:25,040 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:02:25,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:02:25,041 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:02:25,041 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:02:25,041 INFO L87 Difference]: Start difference. First operand 66039 states and 72696 transitions. Second operand 3 states. [2018-09-18 12:02:36,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:02:36,784 INFO L93 Difference]: Finished difference Result 140326 states and 155933 transitions. [2018-09-18 12:02:36,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:02:36,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 619 [2018-09-18 12:02:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:02:36,950 INFO L225 Difference]: With dead ends: 140326 [2018-09-18 12:02:36,950 INFO L226 Difference]: Without dead ends: 81098 [2018-09-18 12:02:37,025 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1242 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:02:37,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81098 states. [2018-09-18 12:02:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81098 to 71587. [2018-09-18 12:02:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71587 states. [2018-09-18 12:02:38,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71587 states to 71587 states and 79159 transitions. [2018-09-18 12:02:38,478 INFO L78 Accepts]: Start accepts. Automaton has 71587 states and 79159 transitions. Word has length 619 [2018-09-18 12:02:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:02:38,479 INFO L480 AbstractCegarLoop]: Abstraction has 71587 states and 79159 transitions. [2018-09-18 12:02:38,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:02:38,479 INFO L276 IsEmpty]: Start isEmpty. Operand 71587 states and 79159 transitions. [2018-09-18 12:02:38,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2018-09-18 12:02:38,510 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:02:38,511 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:02:38,511 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:02:38,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1217146066, now seen corresponding path program 1 times [2018-09-18 12:02:38,512 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:02:38,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:38,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:38,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:02:38,513 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:02:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 554 proven. 2 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2018-09-18 12:02:39,642 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:02:39,642 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:02:39,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:39,651 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:02:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:39,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:02:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 554 proven. 2 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2018-09-18 12:02:40,066 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-18 12:02:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 554 proven. 2 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2018-09-18 12:02:40,870 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:02:40,870 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:02:40,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:02:40,886 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:02:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:02:41,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:02:41,347 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 12:02:41,548 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:02:41,549 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:02:41,557 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:02:41,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:02:41 BoogieIcfgContainer [2018-09-18 12:02:41,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:02:41,561 INFO L168 Benchmark]: Toolchain (without parser) took 237278.85 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 673.4 MB. Max. memory is 7.1 GB. [2018-09-18 12:02:41,562 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-09-18 12:02:41,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1363.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 119.1 MB). Peak memory consumption was 119.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:02:41,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 226.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-18 12:02:41,564 INFO L168 Benchmark]: Boogie Preprocessor took 694.63 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 880.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. [2018-09-18 12:02:41,568 INFO L168 Benchmark]: RCFGBuilder took 9005.47 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 306.2 MB). Peak memory consumption was 306.2 MB. Max. memory is 7.1 GB. [2018-09-18 12:02:41,569 INFO L168 Benchmark]: TraceAbstraction took 225981.75 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 356.0 MB. Max. memory is 7.1 GB. [2018-09-18 12:02:41,582 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1363.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 119.1 MB). Peak memory consumption was 119.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 226.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 694.63 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 880.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9005.47 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 306.2 MB). Peak memory consumption was 306.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225981.75 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 356.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 136). Cancelled while BasicCegarLoop was analyzing trace of length 704 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 225.9s OverallTime, 16 OverallIterations, 5 TraceHistogramMax, 184.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3545 SDtfs, 35626 SDslu, 5550 SDs, 0 SdLazy, 64741 SolverSat, 10509 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 158.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13914 GetRequests, 13618 SyntacticMatches, 37 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2552 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71587occurred in iteration=15, 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: 8.0s AutomataMinimizationTime, 15 MinimizatonAttempts, 20470 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 23.8s InterpolantComputationTime, 11648 NumberOfCodeBlocks, 11648 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 18389 ConstructedInterpolants, 48 QuantifiedInterpolants, 29848868 SizeOfPredicates, 37 NumberOfNonLiveVariables, 9931 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 43 InterpolantComputations, 10 PerfectInterpolantSequences, 14304/16684 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/Problem15_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-02-41-608.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label46_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-02-41-608.csv Completed graceful shutdown