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/Problem17_label32_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:04:08,558 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:04:08,560 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:04:08,574 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:04:08,575 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:04:08,576 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:04:08,577 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:04:08,579 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:04:08,580 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:04:08,581 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:04:08,582 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:04:08,583 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:04:08,583 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:04:08,584 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:04:08,586 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:04:08,586 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:04:08,587 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:04:08,589 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:04:08,591 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:04:08,593 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:04:08,594 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:04:08,595 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:04:08,600 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:04:08,600 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:04:08,600 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:04:08,602 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:04:08,603 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:04:08,604 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:04:08,605 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:04:08,606 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:04:08,607 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:04:08,607 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:04:08,611 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:04:08,612 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:04:08,613 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:04:08,613 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:04:08,614 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 18:04:08,638 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:04:08,638 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:04:08,639 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:04:08,639 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:04:08,639 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:04:08,640 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:04:08,640 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:04:08,640 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:04:08,640 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:04:08,640 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:04:08,641 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:04:08,641 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:04:08,641 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:04:08,642 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:04:08,642 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:04:08,642 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:04:08,642 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:04:08,642 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:04:08,643 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:04:08,643 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:04:08,643 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:04:08,643 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:04:08,643 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:04:08,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:04:08,644 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:04:08,644 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:04:08,644 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:04:08,644 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:04:08,645 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:04:08,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:04:08,645 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:04:08,645 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:04:08,645 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:04:08,690 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:04:08,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:04:08,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:04:08,712 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:04:08,712 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:04:08,713 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label32_true-unreach-call.c [2018-09-14 18:04:09,056 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f08897b7/44790592a8dc4685b2d1a6bf187c72d7/FLAG594874af8 [2018-09-14 18:04:09,477 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:04:09,478 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label32_true-unreach-call.c [2018-09-14 18:04:09,506 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f08897b7/44790592a8dc4685b2d1a6bf187c72d7/FLAG594874af8 [2018-09-14 18:04:09,526 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f08897b7/44790592a8dc4685b2d1a6bf187c72d7 [2018-09-14 18:04:09,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:04:09,543 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:04:09,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:04:09,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:04:09,551 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:04:09,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:04:09" (1/1) ... [2018-09-14 18:04:09,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@428e54a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:09, skipping insertion in model container [2018-09-14 18:04:09,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:04:09" (1/1) ... [2018-09-14 18:04:09,567 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:04:10,539 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:04:10,558 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:04:11,107 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:04:11,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:11 WrapperNode [2018-09-14 18:04:11,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:04:11,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:04:11,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:04:11,329 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:04:11,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:11" (1/1) ... [2018-09-14 18:04:11,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:11" (1/1) ... [2018-09-14 18:04:11,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:04:11,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:04:11,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:04:11,607 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:04:12,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:11" (1/1) ... [2018-09-14 18:04:12,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:11" (1/1) ... [2018-09-14 18:04:12,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:11" (1/1) ... [2018-09-14 18:04:12,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:11" (1/1) ... [2018-09-14 18:04:12,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:11" (1/1) ... [2018-09-14 18:04:12,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:11" (1/1) ... [2018-09-14 18:04:12,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:11" (1/1) ... [2018-09-14 18:04:12,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:04:12,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:04:12,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:04:12,522 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:04:12,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:04:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:04:12,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:04:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:04:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:04:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:04:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:04:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:04:12,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:04:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:04:12,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:04:25,401 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:04:25,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:04:25 BoogieIcfgContainer [2018-09-14 18:04:25,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:04:25,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:04:25,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:04:25,408 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:04:25,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:04:09" (1/3) ... [2018-09-14 18:04:25,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a5ef91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:04:25, skipping insertion in model container [2018-09-14 18:04:25,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:04:11" (2/3) ... [2018-09-14 18:04:25,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a5ef91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:04:25, skipping insertion in model container [2018-09-14 18:04:25,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:04:25" (3/3) ... [2018-09-14 18:04:25,414 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label32_true-unreach-call.c [2018-09-14 18:04:25,423 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:04:25,431 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:04:25,486 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:04:25,487 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:04:25,488 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:04:25,488 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:04:25,488 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:04:25,488 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:04:25,488 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:04:25,488 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:04:25,489 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:04:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-14 18:04:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-14 18:04:25,537 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:04:25,538 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:04:25,539 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:04:25,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1058838858, now seen corresponding path program 1 times [2018-09-14 18:04:25,548 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:04:25,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:25,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:25,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:25,597 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:04:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:04:26,088 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:04:26,088 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:04:26,088 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:04:26,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:04:26,110 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:04:26,111 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:04:26,113 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-14 18:04:39,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:04:39,543 INFO L93 Difference]: Finished difference Result 2118 states and 3937 transitions. [2018-09-14 18:04:39,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:04:39,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-09-14 18:04:39,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:04:39,575 INFO L225 Difference]: With dead ends: 2118 [2018-09-14 18:04:39,575 INFO L226 Difference]: Without dead ends: 1508 [2018-09-14 18:04:39,586 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:04:39,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2018-09-14 18:04:39,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1039. [2018-09-14 18:04:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-09-14 18:04:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2018-09-14 18:04:39,724 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 55 [2018-09-14 18:04:39,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:04:39,725 INFO L480 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2018-09-14 18:04:39,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:04:39,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2018-09-14 18:04:39,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-14 18:04:39,735 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:04:39,737 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:04:39,738 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:04:39,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1690523775, now seen corresponding path program 1 times [2018-09-14 18:04:39,738 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:04:39,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:39,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:39,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:39,741 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:04:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:40,374 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-09-14 18:04:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:04:40,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:04:40,421 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:04:40,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:40,443 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:04:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:40,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:07,329 WARN L178 SmtUtils]: Spent 24.28 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-09-14 18:05:27,655 WARN L178 SmtUtils]: Spent 16.10 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-09-14 18:05:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:05:28,154 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:05:32,498 WARN L178 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-09-14 18:05:32,579 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-09-14 18:05:35,062 WARN L178 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-09-14 18:05:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:05:35,627 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:05:35,627 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-09-14 18:05:35,630 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:05:35,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:05:35,631 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:05:35,632 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=161, Unknown=4, NotChecked=0, Total=210 [2018-09-14 18:05:35,632 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 6 states. [2018-09-14 18:06:30,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:30,728 INFO L93 Difference]: Finished difference Result 3904 states and 6145 transitions. [2018-09-14 18:06:30,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:06:30,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-09-14 18:06:30,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:30,754 INFO L225 Difference]: With dead ends: 3904 [2018-09-14 18:06:30,754 INFO L226 Difference]: Without dead ends: 2871 [2018-09-14 18:06:30,764 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 54.2s TimeCoverageRelationStatistics Valid=45, Invalid=161, Unknown=4, NotChecked=0, Total=210 [2018-09-14 18:06:30,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2018-09-14 18:06:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2842. [2018-09-14 18:06:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2842 states. [2018-09-14 18:06:30,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 4213 transitions. [2018-09-14 18:06:30,885 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 4213 transitions. Word has length 130 [2018-09-14 18:06:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:30,886 INFO L480 AbstractCegarLoop]: Abstraction has 2842 states and 4213 transitions. [2018-09-14 18:06:30,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:06:30,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 4213 transitions. [2018-09-14 18:06:30,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-09-14 18:06:30,892 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:30,892 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:06:30,893 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:30,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1567695546, now seen corresponding path program 1 times [2018-09-14 18:06:30,893 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:30,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:30,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:30,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:30,895 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:06:31,255 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:06:31,256 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:06:31,256 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:06:31,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:06:31,261 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:06:31,261 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:06:31,264 INFO L87 Difference]: Start difference. First operand 2842 states and 4213 transitions. Second operand 4 states. [2018-09-14 18:06:39,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:39,276 INFO L93 Difference]: Finished difference Result 10472 states and 16122 transitions. [2018-09-14 18:06:39,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:06:39,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2018-09-14 18:06:39,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:39,334 INFO L225 Difference]: With dead ends: 10472 [2018-09-14 18:06:39,334 INFO L226 Difference]: Without dead ends: 7636 [2018-09-14 18:06:39,359 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:06:39,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7636 states. [2018-09-14 18:06:39,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7636 to 7634. [2018-09-14 18:06:39,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7634 states. [2018-09-14 18:06:39,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7634 states to 7634 states and 10967 transitions. [2018-09-14 18:06:39,609 INFO L78 Accepts]: Start accepts. Automaton has 7634 states and 10967 transitions. Word has length 165 [2018-09-14 18:06:39,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:39,610 INFO L480 AbstractCegarLoop]: Abstraction has 7634 states and 10967 transitions. [2018-09-14 18:06:39,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:06:39,610 INFO L276 IsEmpty]: Start isEmpty. Operand 7634 states and 10967 transitions. [2018-09-14 18:06:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-09-14 18:06:39,618 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:39,618 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:06:39,618 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:39,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1014156896, now seen corresponding path program 1 times [2018-09-14 18:06:39,619 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:39,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:39,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:39,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:39,621 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:06:40,020 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:06:40,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:06:40,020 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:06:40,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:06:40,021 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:06:40,021 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:06:40,022 INFO L87 Difference]: Start difference. First operand 7634 states and 10967 transitions. Second operand 5 states. [2018-09-14 18:06:56,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:06:56,223 INFO L93 Difference]: Finished difference Result 23780 states and 35952 transitions. [2018-09-14 18:06:56,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:06:56,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2018-09-14 18:06:56,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:06:56,313 INFO L225 Difference]: With dead ends: 23780 [2018-09-14 18:06:56,313 INFO L226 Difference]: Without dead ends: 16152 [2018-09-14 18:06:56,348 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:06:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16152 states. [2018-09-14 18:06:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16152 to 16119. [2018-09-14 18:06:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16119 states. [2018-09-14 18:06:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16119 states to 16119 states and 22463 transitions. [2018-09-14 18:06:56,720 INFO L78 Accepts]: Start accepts. Automaton has 16119 states and 22463 transitions. Word has length 193 [2018-09-14 18:06:56,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:06:56,720 INFO L480 AbstractCegarLoop]: Abstraction has 16119 states and 22463 transitions. [2018-09-14 18:06:56,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:06:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 16119 states and 22463 transitions. [2018-09-14 18:06:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-09-14 18:06:56,727 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:06:56,728 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-09-14 18:06:56,728 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:06:56,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1601373575, now seen corresponding path program 1 times [2018-09-14 18:06:56,729 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:06:56,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:56,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:56,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:06:56,730 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:06:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 97 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-14 18:06:57,052 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:06:57,052 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:06:57,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:57,060 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:06:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:57,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:06:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:06:57,395 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:06:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:06:57,542 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:06:57,543 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:06:57,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:06:57,699 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:06:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:06:57,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:06:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:06:57,943 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:06:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:06:58,386 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 18:06:58,386 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 11 [2018-09-14 18:06:58,386 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:06:58,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:06:58,387 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:06:58,387 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 18:06:58,388 INFO L87 Difference]: Start difference. First operand 16119 states and 22463 transitions. Second operand 5 states. [2018-09-14 18:07:05,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:07:05,831 INFO L93 Difference]: Finished difference Result 32401 states and 45557 transitions. [2018-09-14 18:07:05,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:07:05,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2018-09-14 18:07:05,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:07:05,886 INFO L225 Difference]: With dead ends: 32401 [2018-09-14 18:07:05,886 INFO L226 Difference]: Without dead ends: 16288 [2018-09-14 18:07:05,923 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 866 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:07:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16288 states. [2018-09-14 18:07:06,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16288 to 15812. [2018-09-14 18:07:06,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15812 states. [2018-09-14 18:07:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15812 states to 15812 states and 19757 transitions. [2018-09-14 18:07:06,236 INFO L78 Accepts]: Start accepts. Automaton has 15812 states and 19757 transitions. Word has length 219 [2018-09-14 18:07:06,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:07:06,237 INFO L480 AbstractCegarLoop]: Abstraction has 15812 states and 19757 transitions. [2018-09-14 18:07:06,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:07:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 15812 states and 19757 transitions. [2018-09-14 18:07:06,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-14 18:07:06,244 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:07:06,245 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-09-14 18:07:06,245 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:07:06,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1987888066, now seen corresponding path program 1 times [2018-09-14 18:07:06,246 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:07:06,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:07:06,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:07:06,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:07:06,250 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:07:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:07:06,586 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:07:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 97 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:07:06,870 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:07:06,870 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:07:06,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:07:06,878 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:07:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:07:06,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:07:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:07:07,189 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:07:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:07:07,462 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:07:07,462 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:07:07,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:07:07,478 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:07:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:07:07,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:07:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:07:07,731 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:07:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:07:07,860 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 18:07:07,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-14 18:07:07,860 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:07:07,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:07:07,861 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:07:07,861 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:07:07,861 INFO L87 Difference]: Start difference. First operand 15812 states and 19757 transitions. Second operand 5 states. [2018-09-14 18:07:13,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:07:13,442 INFO L93 Difference]: Finished difference Result 32575 states and 40949 transitions. [2018-09-14 18:07:13,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:07:13,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2018-09-14 18:07:13,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:07:13,480 INFO L225 Difference]: With dead ends: 32575 [2018-09-14 18:07:13,480 INFO L226 Difference]: Without dead ends: 16769 [2018-09-14 18:07:13,507 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 894 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:07:13,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16769 states. [2018-09-14 18:07:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16769 to 16309. [2018-09-14 18:07:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16309 states. [2018-09-14 18:07:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16309 states to 16309 states and 18967 transitions. [2018-09-14 18:07:13,784 INFO L78 Accepts]: Start accepts. Automaton has 16309 states and 18967 transitions. Word has length 226 [2018-09-14 18:07:13,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:07:13,785 INFO L480 AbstractCegarLoop]: Abstraction has 16309 states and 18967 transitions. [2018-09-14 18:07:13,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:07:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 16309 states and 18967 transitions. [2018-09-14 18:07:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-14 18:07:13,792 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:07:13,792 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:07:13,792 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:07:13,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1410497229, now seen corresponding path program 1 times [2018-09-14 18:07:13,793 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:07:13,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:07:13,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:07:13,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:07:13,794 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:07:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:07:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:07:14,144 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:07:14,144 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:07:14,145 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:07:14,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:07:14,145 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:07:14,145 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:07:14,146 INFO L87 Difference]: Start difference. First operand 16309 states and 18967 transitions. Second operand 4 states. [2018-09-14 18:07:24,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:07:24,092 INFO L93 Difference]: Finished difference Result 51597 states and 62166 transitions. [2018-09-14 18:07:24,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:07:24,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2018-09-14 18:07:24,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:07:24,184 INFO L225 Difference]: With dead ends: 51597 [2018-09-14 18:07:24,184 INFO L226 Difference]: Without dead ends: 35294 [2018-09-14 18:07:24,223 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:07:24,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35294 states. [2018-09-14 18:07:24,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35294 to 34846. [2018-09-14 18:07:24,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34846 states. [2018-09-14 18:07:24,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34846 states to 34846 states and 41212 transitions. [2018-09-14 18:07:24,846 INFO L78 Accepts]: Start accepts. Automaton has 34846 states and 41212 transitions. Word has length 232 [2018-09-14 18:07:24,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:07:24,846 INFO L480 AbstractCegarLoop]: Abstraction has 34846 states and 41212 transitions. [2018-09-14 18:07:24,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:07:24,847 INFO L276 IsEmpty]: Start isEmpty. Operand 34846 states and 41212 transitions. [2018-09-14 18:07:24,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-09-14 18:07:24,863 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:07:24,864 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:07:24,864 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:07:24,864 INFO L82 PathProgramCache]: Analyzing trace with hash 73656625, now seen corresponding path program 1 times [2018-09-14 18:07:24,865 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:07:24,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:07:24,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:07:24,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:07:24,866 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:07:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:07:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 18:07:25,287 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:07:25,287 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:07:25,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:07:25,295 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:07:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:07:25,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:07:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 18:07:25,628 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:07:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 101 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:07:26,468 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:07:26,468 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:07:26,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:07:26,484 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:07:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:07:26,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:07:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 18:07:27,089 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:07:27,243 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 18:07:27,739 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-14 18:07:27,861 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-14 18:07:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 101 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:07:28,533 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:07:28,534 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8, 7, 8] total 14 [2018-09-14 18:07:28,534 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:07:28,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:07:28,535 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:07:28,535 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-09-14 18:07:28,535 INFO L87 Difference]: Start difference. First operand 34846 states and 41212 transitions. Second operand 9 states. [2018-09-14 18:08:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:08:01,203 INFO L93 Difference]: Finished difference Result 108596 states and 140433 transitions. [2018-09-14 18:08:01,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-14 18:08:01,203 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 281 [2018-09-14 18:08:01,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:08:01,526 INFO L225 Difference]: With dead ends: 108596 [2018-09-14 18:08:01,526 INFO L226 Difference]: Without dead ends: 73756 [2018-09-14 18:08:01,662 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1112 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2018-09-14 18:08:01,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73756 states. [2018-09-14 18:08:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73756 to 69760. [2018-09-14 18:08:03,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69760 states. [2018-09-14 18:08:03,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69760 states to 69760 states and 82672 transitions. [2018-09-14 18:08:03,449 INFO L78 Accepts]: Start accepts. Automaton has 69760 states and 82672 transitions. Word has length 281 [2018-09-14 18:08:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:08:03,450 INFO L480 AbstractCegarLoop]: Abstraction has 69760 states and 82672 transitions. [2018-09-14 18:08:03,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:08:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 69760 states and 82672 transitions. [2018-09-14 18:08:03,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-14 18:08:03,480 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:08:03,481 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:08:03,481 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:08:03,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1798263919, now seen corresponding path program 1 times [2018-09-14 18:08:03,482 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:08:03,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:03,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:03,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:03,483 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:08:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-09-14 18:08:03,832 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:08:03,832 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:08:03,832 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:08:03,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:08:03,833 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:08:03,833 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:08:03,833 INFO L87 Difference]: Start difference. First operand 69760 states and 82672 transitions. Second operand 4 states. [2018-09-14 18:08:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:08:12,052 INFO L93 Difference]: Finished difference Result 172333 states and 208754 transitions. [2018-09-14 18:08:12,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:08:12,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 378 [2018-09-14 18:08:12,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:08:12,355 INFO L225 Difference]: With dead ends: 172333 [2018-09-14 18:08:12,355 INFO L226 Difference]: Without dead ends: 103046 [2018-09-14 18:08:12,451 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:08:12,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103046 states. [2018-09-14 18:08:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103046 to 89879. [2018-09-14 18:08:13,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89879 states. [2018-09-14 18:08:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89879 states to 89879 states and 106980 transitions. [2018-09-14 18:08:13,636 INFO L78 Accepts]: Start accepts. Automaton has 89879 states and 106980 transitions. Word has length 378 [2018-09-14 18:08:13,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:08:13,637 INFO L480 AbstractCegarLoop]: Abstraction has 89879 states and 106980 transitions. [2018-09-14 18:08:13,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:08:13,637 INFO L276 IsEmpty]: Start isEmpty. Operand 89879 states and 106980 transitions. [2018-09-14 18:08:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-09-14 18:08:13,717 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:08:13,717 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:08:13,718 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:08:13,718 INFO L82 PathProgramCache]: Analyzing trace with hash -273832528, now seen corresponding path program 1 times [2018-09-14 18:08:13,718 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:08:13,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:13,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:13,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:08:13,719 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:08:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:08:14,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:08:14,812 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:08:14,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:14,822 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:08:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:14,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:08:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 353 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-14 18:08:15,394 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:08:16,050 WARN L178 SmtUtils]: Spent 597.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-09-14 18:08:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 222 proven. 109 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-14 18:08:16,624 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:08:16,624 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:08:16,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:08:16,642 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:08:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:08:16,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:08:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 18:08:17,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:08:17,412 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2018-09-14 18:08:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 152 proven. 175 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-14 18:08:18,182 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:08:18,182 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 14 [2018-09-14 18:08:18,182 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:08:18,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-14 18:08:18,183 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-14 18:08:18,184 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-09-14 18:08:18,184 INFO L87 Difference]: Start difference. First operand 89879 states and 106980 transitions. Second operand 8 states. Received shutdown request... [2018-09-14 18:08:19,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 18:08:19,832 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:08:19,837 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:08:19,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:08:19 BoogieIcfgContainer [2018-09-14 18:08:19,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:08:19,839 INFO L168 Benchmark]: Toolchain (without parser) took 250298.33 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 777.0 MB. Max. memory is 7.1 GB. [2018-09-14 18:08:19,840 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 18:08:19,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1783.59 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:08:19,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 278.33 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: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2018-09-14 18:08:19,842 INFO L168 Benchmark]: Boogie Preprocessor took 914.48 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 955.3 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. [2018-09-14 18:08:19,843 INFO L168 Benchmark]: RCFGBuilder took 12880.23 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 466.8 MB). Peak memory consumption was 466.8 MB. Max. memory is 7.1 GB. [2018-09-14 18:08:19,843 INFO L168 Benchmark]: TraceAbstraction took 234435.00 ms. Allocated memory was 2.5 GB in the beginning and 3.5 GB in the end (delta: 988.8 MB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -689.5 MB). Peak memory consumption was 299.3 MB. Max. memory is 7.1 GB. [2018-09-14 18:08:19,848 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1783.59 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 278.33 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: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 914.48 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 955.3 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12880.23 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 466.8 MB). Peak memory consumption was 466.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234435.00 ms. Allocated memory was 2.5 GB in the beginning and 3.5 GB in the end (delta: 988.8 MB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -689.5 MB). Peak memory consumption was 299.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 152]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 152). Cancelled while BasicCegarLoop was constructing difference of abstraction (89879states) and FLOYD_HOARE automaton (currently 15 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (2564 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 234.3s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 159.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4018 SDtfs, 16084 SDslu, 2826 SDs, 0 SdLazy, 34557 SolverSat, 8086 SolverUnsat, 22 SolverUnknown, 0 SolverNotchecked, 144.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5278 GetRequests, 5159 SyntacticMatches, 25 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 58.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89879occurred in iteration=9, 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: 5.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 19080 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 65.9s InterpolantComputationTime, 4976 NumberOfCodeBlocks, 4976 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7540 ConstructedInterpolants, 315 QuantifiedInterpolants, 10316077 SizeOfPredicates, 15 NumberOfNonLiveVariables, 4374 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 28 InterpolantComputations, 8 PerfectInterpolantSequences, 4900/5478 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/Problem17_label32_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-08-19-863.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label32_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-08-19-863.csv Completed graceful shutdown