java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:00:05,442 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:00:05,444 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:00:05,457 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:00:05,457 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:00:05,458 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:00:05,459 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:00:05,461 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:00:05,463 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:00:05,464 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:00:05,465 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:00:05,465 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:00:05,466 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:00:05,467 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:00:05,468 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:00:05,469 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:00:05,470 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:00:05,472 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:00:05,474 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:00:05,476 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:00:05,477 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:00:05,478 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:00:05,481 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:00:05,481 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:00:05,481 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:00:05,482 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:00:05,483 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:00:05,484 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:00:05,485 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:00:05,487 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:00:05,487 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:00:05,488 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:00:05,488 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:00:05,488 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:00:05,489 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:00:05,490 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:00:05,490 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 [2018-07-24 14:00:05,506 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:00:05,506 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:00:05,507 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:00:05,508 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:00:05,508 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:00:05,508 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:00:05,508 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:00:05,508 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:00:05,509 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:00:05,509 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:00:05,509 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:00:05,510 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:00:05,510 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:00:05,510 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:00:05,510 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:00:05,510 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:00:05,511 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:00:05,511 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:00:05,511 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:00:05,511 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:00:05,511 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:00:05,512 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:00:05,512 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:00:05,512 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:00:05,512 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:00:05,512 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:00:05,513 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:00:05,513 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:00:05,513 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:00:05,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:00:05,513 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:00:05,514 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:00:05,514 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:00:05,568 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:00:05,587 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:00:05,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:00:05,596 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:00:05,596 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:00:05,597 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25_true-unreach-call.c [2018-07-24 14:00:05,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93176d60f/461a7a707fc04070a9ba2edf3335a638/FLAG9849dce82 [2018-07-24 14:00:06,282 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:00:06,284 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label25_true-unreach-call.c [2018-07-24 14:00:06,304 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93176d60f/461a7a707fc04070a9ba2edf3335a638/FLAG9849dce82 [2018-07-24 14:00:06,321 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93176d60f/461a7a707fc04070a9ba2edf3335a638 [2018-07-24 14:00:06,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:00:06,336 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:00:06,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:00:06,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:00:06,347 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:00:06,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:00:06" (1/1) ... [2018-07-24 14:00:06,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76231aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:06, skipping insertion in model container [2018-07-24 14:00:06,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:00:06" (1/1) ... [2018-07-24 14:00:06,636 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:00:07,062 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:00:07,080 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:00:07,280 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:00:07,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:07 WrapperNode [2018-07-24 14:00:07,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:00:07,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:00:07,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:00:07,378 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:00:07,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:07" (1/1) ... [2018-07-24 14:00:07,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:07" (1/1) ... [2018-07-24 14:00:07,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:00:07,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:00:07,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:00:07,568 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:00:07,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:07" (1/1) ... [2018-07-24 14:00:07,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:07" (1/1) ... [2018-07-24 14:00:07,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:07" (1/1) ... [2018-07-24 14:00:07,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:07" (1/1) ... [2018-07-24 14:00:07,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:07" (1/1) ... [2018-07-24 14:00:07,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:07" (1/1) ... [2018-07-24 14:00:08,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:07" (1/1) ... [2018-07-24 14:00:08,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:00:08,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:00:08,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:00:08,024 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:00:08,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:07" (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 [2018-07-24 14:00:08,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:00:08,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:00:08,102 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:00:08,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:00:08,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:00:08,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:00:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:00:08,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:00:13,360 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:00:13,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:00:13 BoogieIcfgContainer [2018-07-24 14:00:13,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:00:13,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:00:13,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:00:13,366 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:00:13,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:00:06" (1/3) ... [2018-07-24 14:00:13,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c509255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:00:13, skipping insertion in model container [2018-07-24 14:00:13,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:00:07" (2/3) ... [2018-07-24 14:00:13,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c509255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:00:13, skipping insertion in model container [2018-07-24 14:00:13,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:00:13" (3/3) ... [2018-07-24 14:00:13,370 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label25_true-unreach-call.c [2018-07-24 14:00:13,380 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:00:13,390 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:00:13,450 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:00:13,451 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:00:13,451 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:00:13,451 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:00:13,451 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:00:13,451 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:00:13,451 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:00:13,451 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:00:13,452 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:00:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-07-24 14:00:13,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-07-24 14:00:13,504 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:13,507 INFO L353 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] [2018-07-24 14:00:13,507 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:00:13,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1384704100, now seen corresponding path program 1 times [2018-07-24 14:00:13,516 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:13,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:13,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:13,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:13,570 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:14,036 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:00:14,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:00:14,036 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:00:14,047 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:00:14,064 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:00:14,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:00:14,068 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-07-24 14:00:17,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:00:17,658 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-07-24 14:00:17,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:00:17,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-07-24 14:00:17,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:00:17,698 INFO L225 Difference]: With dead ends: 982 [2018-07-24 14:00:17,698 INFO L226 Difference]: Without dead ends: 683 [2018-07-24 14:00:17,706 INFO L573 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 [2018-07-24 14:00:17,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-07-24 14:00:17,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-07-24 14:00:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-07-24 14:00:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-07-24 14:00:17,803 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 38 [2018-07-24 14:00:17,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:00:17,804 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-07-24 14:00:17,804 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:00:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-07-24 14:00:17,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-07-24 14:00:17,811 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:17,811 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:00:17,812 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:00:17,812 INFO L82 PathProgramCache]: Analyzing trace with hash -689587928, now seen corresponding path program 1 times [2018-07-24 14:00:17,812 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:17,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:17,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:17,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:17,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:18,091 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:18,091 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:00:18,092 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:00:18,092 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:00:18,094 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:00:18,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:00:18,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:00:18,095 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 4 states. [2018-07-24 14:00:22,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:00:22,282 INFO L93 Difference]: Finished difference Result 2516 states and 3860 transitions. [2018-07-24 14:00:22,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:00:22,283 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2018-07-24 14:00:22,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:00:22,302 INFO L225 Difference]: With dead ends: 2516 [2018-07-24 14:00:22,303 INFO L226 Difference]: Without dead ends: 1839 [2018-07-24 14:00:22,309 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:00:22,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2018-07-24 14:00:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1821. [2018-07-24 14:00:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1821 states. [2018-07-24 14:00:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2605 transitions. [2018-07-24 14:00:22,427 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2605 transitions. Word has length 112 [2018-07-24 14:00:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:00:22,428 INFO L471 AbstractCegarLoop]: Abstraction has 1821 states and 2605 transitions. [2018-07-24 14:00:22,428 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:00:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2605 transitions. [2018-07-24 14:00:22,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-24 14:00:22,445 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:22,446 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:00:22,446 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:00:22,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1395577671, now seen corresponding path program 1 times [2018-07-24 14:00:22,447 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:22,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:22,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:22,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:22,449 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:23,254 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:00:23,255 INFO L191 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 [2018-07-24 14:00:23,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:23,280 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:00:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:23,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:00:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:24,098 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:00:24,556 WARN L169 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-07-24 14:00:24,685 WARN L169 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-07-24 14:00:24,886 WARN L169 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-07-24 14:00:25,003 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-07-24 14:00:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:25,567 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:00:25,567 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2018-07-24 14:00:25,567 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:00:25,568 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:00:25,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:00:25,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:00:25,569 INFO L87 Difference]: Start difference. First operand 1821 states and 2605 transitions. Second operand 5 states. [2018-07-24 14:00:25,829 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 14:00:30,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:00:30,634 INFO L93 Difference]: Finished difference Result 5370 states and 7794 transitions. [2018-07-24 14:00:30,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:00:30,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-07-24 14:00:30,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:00:30,662 INFO L225 Difference]: With dead ends: 5370 [2018-07-24 14:00:30,662 INFO L226 Difference]: Without dead ends: 3360 [2018-07-24 14:00:30,673 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-07-24 14:00:30,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2018-07-24 14:00:30,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3118. [2018-07-24 14:00:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3118 states. [2018-07-24 14:00:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 4543 transitions. [2018-07-24 14:00:30,802 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 4543 transitions. Word has length 133 [2018-07-24 14:00:30,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:00:30,803 INFO L471 AbstractCegarLoop]: Abstraction has 3118 states and 4543 transitions. [2018-07-24 14:00:30,803 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:00:30,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 4543 transitions. [2018-07-24 14:00:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-07-24 14:00:30,810 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:30,810 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:00:30,810 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:00:30,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1027526584, now seen corresponding path program 1 times [2018-07-24 14:00:30,811 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:30,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:30,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:30,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:30,812 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:31,122 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:00:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 62 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:00:31,547 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:00:31,548 INFO L191 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 [2018-07-24 14:00:31,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:31,568 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:00:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:31,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:00:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 14:00:32,118 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:00:32,315 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:00:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 62 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:00:32,577 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:00:32,577 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 14:00:32,577 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:00:32,581 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:00:32,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:00:32,620 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:00:32,621 INFO L87 Difference]: Start difference. First operand 3118 states and 4543 transitions. Second operand 5 states. [2018-07-24 14:00:41,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:00:41,069 INFO L93 Difference]: Finished difference Result 7942 states and 11626 transitions. [2018-07-24 14:00:41,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:00:41,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2018-07-24 14:00:41,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:00:41,102 INFO L225 Difference]: With dead ends: 7942 [2018-07-24 14:00:41,103 INFO L226 Difference]: Without dead ends: 4830 [2018-07-24 14:00:41,121 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 407 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:00:41,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4830 states. [2018-07-24 14:00:41,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4830 to 4692. [2018-07-24 14:00:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2018-07-24 14:00:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 6517 transitions. [2018-07-24 14:00:41,264 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 6517 transitions. Word has length 206 [2018-07-24 14:00:41,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:00:41,265 INFO L471 AbstractCegarLoop]: Abstraction has 4692 states and 6517 transitions. [2018-07-24 14:00:41,265 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:00:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 6517 transitions. [2018-07-24 14:00:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-24 14:00:41,276 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:41,276 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:00:41,276 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:00:41,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1119037538, now seen corresponding path program 1 times [2018-07-24 14:00:41,277 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:41,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:41,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:41,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:41,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 14:00:42,284 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:00:42,284 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:00:42,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:42,299 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:00:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:42,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:00:42,908 WARN L169 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2018-07-24 14:00:43,040 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 14:00:43,040 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:00:43,558 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 11 [2018-07-24 14:00:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 14:00:43,830 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:00:43,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-07-24 14:00:43,831 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:00:43,831 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:00:43,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:00:43,832 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:00:43,832 INFO L87 Difference]: Start difference. First operand 4692 states and 6517 transitions. Second operand 6 states. [2018-07-24 14:00:47,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:00:47,893 INFO L93 Difference]: Finished difference Result 12256 states and 17967 transitions. [2018-07-24 14:00:47,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:00:47,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2018-07-24 14:00:47,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:00:47,939 INFO L225 Difference]: With dead ends: 12256 [2018-07-24 14:00:47,940 INFO L226 Difference]: Without dead ends: 7759 [2018-07-24 14:00:47,973 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 495 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:00:47,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7759 states. [2018-07-24 14:00:48,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7759 to 7260. [2018-07-24 14:00:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7260 states. [2018-07-24 14:00:48,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7260 states to 7260 states and 10278 transitions. [2018-07-24 14:00:48,181 INFO L78 Accepts]: Start accepts. Automaton has 7260 states and 10278 transitions. Word has length 250 [2018-07-24 14:00:48,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:00:48,182 INFO L471 AbstractCegarLoop]: Abstraction has 7260 states and 10278 transitions. [2018-07-24 14:00:48,182 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:00:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 7260 states and 10278 transitions. [2018-07-24 14:00:48,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-24 14:00:48,200 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:48,201 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:00:48,201 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:00:48,201 INFO L82 PathProgramCache]: Analyzing trace with hash 445853596, now seen corresponding path program 1 times [2018-07-24 14:00:48,202 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:48,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:48,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:48,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:48,203 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:48,605 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:00:48,606 INFO L191 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 [2018-07-24 14:00:48,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:48,614 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:00:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:48,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:00:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-24 14:00:48,855 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:00:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-24 14:00:49,027 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:00:49,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-07-24 14:00:49,028 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:00:49,028 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:00:49,028 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:00:49,028 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:00:49,029 INFO L87 Difference]: Start difference. First operand 7260 states and 10278 transitions. Second operand 3 states. [2018-07-24 14:00:50,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:00:50,804 INFO L93 Difference]: Finished difference Result 19383 states and 29001 transitions. [2018-07-24 14:00:50,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:00:50,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 273 [2018-07-24 14:00:50,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:00:50,881 INFO L225 Difference]: With dead ends: 19383 [2018-07-24 14:00:50,881 INFO L226 Difference]: Without dead ends: 12318 [2018-07-24 14:00:50,935 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:00:50,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12318 states. [2018-07-24 14:00:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12318 to 11968. [2018-07-24 14:00:51,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11968 states. [2018-07-24 14:00:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11968 states to 11968 states and 16181 transitions. [2018-07-24 14:00:51,239 INFO L78 Accepts]: Start accepts. Automaton has 11968 states and 16181 transitions. Word has length 273 [2018-07-24 14:00:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:00:51,239 INFO L471 AbstractCegarLoop]: Abstraction has 11968 states and 16181 transitions. [2018-07-24 14:00:51,239 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:00:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 11968 states and 16181 transitions. [2018-07-24 14:00:51,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-07-24 14:00:51,290 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:51,290 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:00:51,291 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:00:51,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1740278595, now seen corresponding path program 1 times [2018-07-24 14:00:51,291 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:51,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:51,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:51,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:51,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:00:51,941 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:00:51,941 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:00:51,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:51,952 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:00:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:52,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:00:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 14:00:52,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:00:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 14:00:52,511 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:00:52,511 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 9 [2018-07-24 14:00:52,512 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:00:52,512 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:00:52,512 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:00:52,512 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:00:52,513 INFO L87 Difference]: Start difference. First operand 11968 states and 16181 transitions. Second operand 3 states. [2018-07-24 14:00:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:00:53,392 INFO L93 Difference]: Finished difference Result 23737 states and 32192 transitions. [2018-07-24 14:00:53,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:00:53,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 323 [2018-07-24 14:00:53,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:00:53,442 INFO L225 Difference]: With dead ends: 23737 [2018-07-24 14:00:53,442 INFO L226 Difference]: Without dead ends: 11964 [2018-07-24 14:00:53,477 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 643 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:00:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11964 states. [2018-07-24 14:00:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11964 to 11964. [2018-07-24 14:00:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11964 states. [2018-07-24 14:00:53,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11964 states to 11964 states and 16168 transitions. [2018-07-24 14:00:53,733 INFO L78 Accepts]: Start accepts. Automaton has 11964 states and 16168 transitions. Word has length 323 [2018-07-24 14:00:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:00:53,734 INFO L471 AbstractCegarLoop]: Abstraction has 11964 states and 16168 transitions. [2018-07-24 14:00:53,734 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:00:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 11964 states and 16168 transitions. [2018-07-24 14:00:53,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-07-24 14:00:53,783 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:00:53,784 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:00:53,784 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:00:53,784 INFO L82 PathProgramCache]: Analyzing trace with hash 38563041, now seen corresponding path program 1 times [2018-07-24 14:00:53,784 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:00:53,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:53,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:53,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:00:53,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:00:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-07-24 14:00:54,582 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:00:54,582 INFO L191 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 [2018-07-24 14:00:54,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:00:54,722 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:00:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:00:54,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:00:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 11 proven. 58 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-07-24 14:00:55,479 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:00:56,157 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2018-07-24 14:00:56,162 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,211 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,295 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,351 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,396 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,465 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,519 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,575 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,705 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,755 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,810 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,853 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,899 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:56,943 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,008 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,180 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,241 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,286 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,328 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,370 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,414 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,460 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,508 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,589 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,633 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,685 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,724 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,787 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,855 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:57,899 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:58,229 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:58,402 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:58,442 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:58,511 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:58,556 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:58,812 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:58,868 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:58,924 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:58,973 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,064 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,173 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,220 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,260 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,300 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,416 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,461 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,508 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,551 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,595 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,668 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,822 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,863 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,922 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:00:59,963 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,051 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,138 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,178 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,236 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,282 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,348 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,422 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,474 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,528 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,579 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,655 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,717 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,768 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,812 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,854 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,897 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,939 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:00,984 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,027 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,069 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,108 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,148 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,190 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,231 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,271 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,310 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,351 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,391 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,435 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,479 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,520 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,586 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,625 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,669 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,712 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,755 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,795 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,835 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,876 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,917 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:01,955 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:02,020 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:02,063 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:02,104 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:02,209 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:02,252 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:02,291 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:02,332 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:02,376 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:02,419 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:02,462 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:02,804 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,119 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,165 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,205 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,272 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,314 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,356 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,397 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,744 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,788 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,829 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,873 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,933 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:03,974 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,018 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,060 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,100 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,142 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,211 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,252 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,294 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,336 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,382 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,485 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,529 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,572 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,615 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,660 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,700 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,740 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,782 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,823 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,864 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,904 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,951 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:04,989 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,029 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,069 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,110 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,150 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,189 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,232 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,275 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,407 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,453 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,493 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,546 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,603 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,641 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,689 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,733 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,779 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,817 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,856 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,897 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:05,949 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:06,063 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:06,101 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:06,138 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:06,177 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:06,219 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:06,278 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 65 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:01:07,806 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:01:07,806 INFO L191 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 [2018-07-24 14:01:07,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:01:07,822 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:01:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:01:08,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:01:12,215 WARN L169 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 35 [2018-07-24 14:01:22,368 WARN L169 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 38 [2018-07-24 14:01:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 9 proven. 60 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-07-24 14:01:22,567 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:01:22,678 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:22,842 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:22,883 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:22,922 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:22,960 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,036 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,118 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,199 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,239 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,278 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,317 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,370 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,409 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,451 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,490 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,530 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,571 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,613 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,657 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,696 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,738 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,793 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,831 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,881 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,922 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:23,963 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,005 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,054 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,096 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,141 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,185 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,227 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,270 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,319 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,364 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,407 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,446 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,485 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,527 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,566 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,645 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,685 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,742 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,783 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,823 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:24,866 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,176 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,222 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,262 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,512 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,554 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,593 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,633 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,674 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,714 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,755 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,795 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,835 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,880 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,931 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:25,972 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,025 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,079 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,133 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,186 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,235 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,282 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,323 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,365 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,458 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,537 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,579 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,621 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,661 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,782 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,855 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,898 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,940 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:26,978 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,020 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,060 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,101 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,139 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,178 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,217 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,257 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,296 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,334 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,373 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,413 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,453 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,493 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,740 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,936 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:27,974 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,014 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,055 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,387 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,430 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,470 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,510 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,550 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,590 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,630 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,674 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,716 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,756 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,798 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,839 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,883 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:28,922 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,050 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,088 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,128 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,167 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,207 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,247 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,285 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,327 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,369 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,408 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,448 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,487 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,528 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,568 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,607 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,652 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,691 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,731 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,771 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,813 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,852 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,894 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,949 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:29,993 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,033 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,083 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,242 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,517 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,558 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,596 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,634 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,672 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,713 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,750 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,788 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,829 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,866 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,904 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,941 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:30,978 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,026 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,072 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,118 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,169 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,210 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,266 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,314 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,361 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,399 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,440 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,478 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,516 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,554 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,591 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,631 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:31,671 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:01:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 65 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:01:35,186 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:01:35,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 9, 9] total 24 [2018-07-24 14:01:35,187 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:01:35,188 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 14:01:35,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 14:01:35,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=401, Unknown=3, NotChecked=0, Total=552 [2018-07-24 14:01:35,191 INFO L87 Difference]: Start difference. First operand 11964 states and 16168 transitions. Second operand 16 states. [2018-07-24 14:01:57,801 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-07-24 14:03:21,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:21,178 INFO L93 Difference]: Finished difference Result 42020 states and 66436 transitions. [2018-07-24 14:03:21,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-07-24 14:03:21,178 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 346 [2018-07-24 14:03:21,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:21,410 INFO L225 Difference]: With dead ends: 42020 [2018-07-24 14:03:21,411 INFO L226 Difference]: Without dead ends: 30251 [2018-07-24 14:03:21,525 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1427 GetRequests, 1034 SyntacticMatches, 339 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5583 ImplicationChecksByTransitivity, 49.7s TimeCoverageRelationStatistics Valid=766, Invalid=2305, Unknown=9, NotChecked=0, Total=3080 [2018-07-24 14:03:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30251 states. [2018-07-24 14:03:22,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30251 to 29074. [2018-07-24 14:03:22,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29074 states. [2018-07-24 14:03:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29074 states to 29074 states and 39381 transitions. [2018-07-24 14:03:22,586 INFO L78 Accepts]: Start accepts. Automaton has 29074 states and 39381 transitions. Word has length 346 [2018-07-24 14:03:22,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:03:22,587 INFO L471 AbstractCegarLoop]: Abstraction has 29074 states and 39381 transitions. [2018-07-24 14:03:22,587 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 14:03:22,587 INFO L276 IsEmpty]: Start isEmpty. Operand 29074 states and 39381 transitions. [2018-07-24 14:03:22,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-07-24 14:03:22,677 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:03:22,678 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:03:22,678 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:03:22,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1528453921, now seen corresponding path program 1 times [2018-07-24 14:03:22,678 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:03:22,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:22,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:22,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:22,679 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:03:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:23,265 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 14:03:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 314 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:03:24,531 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:24,531 INFO L191 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 [2018-07-24 14:03:24,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:24,540 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:24,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 14:03:24,855 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 217 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 14:03:25,179 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:25,179 INFO L191 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 [2018-07-24 14:03:25,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:25,196 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:25,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 14:03:25,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 217 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 14:03:26,009 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:03:26,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5, 5, 5] total 24 [2018-07-24 14:03:26,009 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:03:26,010 INFO L450 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-07-24 14:03:26,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-07-24 14:03:26,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2018-07-24 14:03:26,011 INFO L87 Difference]: Start difference. First operand 29074 states and 39381 transitions. Second operand 20 states. [2018-07-24 14:03:30,556 WARN L169 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 28 [2018-07-24 14:03:34,522 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-07-24 14:03:37,751 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-07-24 14:03:44,490 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-07-24 14:03:44,977 WARN L169 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2018-07-24 14:03:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:50,356 INFO L93 Difference]: Finished difference Result 90130 states and 153342 transitions. [2018-07-24 14:03:50,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-07-24 14:03:50,356 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 386 [2018-07-24 14:03:50,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:50,685 INFO L225 Difference]: With dead ends: 90130 [2018-07-24 14:03:50,686 INFO L226 Difference]: Without dead ends: 45776 [2018-07-24 14:03:51,039 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1682 GetRequests, 1564 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4953 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2041, Invalid=11765, Unknown=0, NotChecked=0, Total=13806 [2018-07-24 14:03:51,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45776 states. [2018-07-24 14:03:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45776 to 39803. [2018-07-24 14:03:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39803 states. [2018-07-24 14:03:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39803 states to 39803 states and 56667 transitions. [2018-07-24 14:03:52,484 INFO L78 Accepts]: Start accepts. Automaton has 39803 states and 56667 transitions. Word has length 386 [2018-07-24 14:03:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:03:52,485 INFO L471 AbstractCegarLoop]: Abstraction has 39803 states and 56667 transitions. [2018-07-24 14:03:52,485 INFO L472 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-07-24 14:03:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 39803 states and 56667 transitions. [2018-07-24 14:03:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-07-24 14:03:52,650 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:03:52,651 INFO L353 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-24 14:03:52,651 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:03:52,651 INFO L82 PathProgramCache]: Analyzing trace with hash 422013087, now seen corresponding path program 1 times [2018-07-24 14:03:52,651 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:03:52,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:52,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:52,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:03:52,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:03:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:53,361 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 310 proven. 94 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-07-24 14:03:53,362 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:53,362 INFO L191 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 [2018-07-24 14:03:53,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:53,371 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:53,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 532 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-07-24 14:03:53,677 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 310 proven. 94 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-07-24 14:03:53,877 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:03:53,877 INFO L191 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 [2018-07-24 14:03:53,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:03:53,893 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:03:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:03:54,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:03:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 430 proven. 175 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 14:03:54,835 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:03:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 310 proven. 94 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-07-24 14:03:55,450 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:03:55,450 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 9 [2018-07-24 14:03:55,450 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:03:55,451 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 14:03:55,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 14:03:55,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:03:55,452 INFO L87 Difference]: Start difference. First operand 39803 states and 56667 transitions. Second operand 7 states. [2018-07-24 14:03:57,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:03:57,955 INFO L93 Difference]: Finished difference Result 82797 states and 123141 transitions. [2018-07-24 14:03:57,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:03:57,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 427 [2018-07-24 14:03:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:03:58,226 INFO L225 Difference]: With dead ends: 82797 [2018-07-24 14:03:58,226 INFO L226 Difference]: Without dead ends: 43191 [2018-07-24 14:03:58,398 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1716 GetRequests, 1702 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:03:58,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43191 states. [2018-07-24 14:03:59,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43191 to 42426. [2018-07-24 14:03:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42426 states. [2018-07-24 14:03:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42426 states to 42426 states and 55641 transitions. [2018-07-24 14:03:59,924 INFO L78 Accepts]: Start accepts. Automaton has 42426 states and 55641 transitions. Word has length 427 [2018-07-24 14:03:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:03:59,925 INFO L471 AbstractCegarLoop]: Abstraction has 42426 states and 55641 transitions. [2018-07-24 14:03:59,925 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 14:03:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 42426 states and 55641 transitions. [2018-07-24 14:04:00,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-07-24 14:04:00,021 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:04:00,022 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:04:00,022 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:04:00,022 INFO L82 PathProgramCache]: Analyzing trace with hash 776263087, now seen corresponding path program 1 times [2018-07-24 14:04:00,022 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:04:00,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:04:00,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:04:00,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:04:00,024 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:04:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:04:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 103 proven. 308 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-24 14:04:01,173 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:04:01,173 INFO L191 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 [2018-07-24 14:04:01,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:04:01,191 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:04:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:04:01,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:04:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 303 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-24 14:04:03,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:04:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 185 proven. 88 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-07-24 14:04:04,088 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:04:04,089 INFO L191 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 [2018-07-24 14:04:04,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:04:04,104 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:04:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:04:04,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:04:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 299 proven. 88 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 14:04:06,771 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:04:06,948 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 185 proven. 88 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-07-24 14:04:06,951 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:04:06,951 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5, 8, 5] total 15 [2018-07-24 14:04:06,952 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:04:06,953 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 14:04:06,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 14:04:06,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=148, Unknown=2, NotChecked=0, Total=210 [2018-07-24 14:04:06,954 INFO L87 Difference]: Start difference. First operand 42426 states and 55641 transitions. Second operand 10 states. Received shutdown request... [2018-07-24 14:04:07,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 14:04:07,248 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:04:07,253 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:04:07,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:04:07 BoogieIcfgContainer [2018-07-24 14:04:07,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:04:07,254 INFO L168 Benchmark]: Toolchain (without parser) took 240919.19 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 91.7 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-07-24 14:04:07,256 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-07-24 14:04:07,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1039.45 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:04:07,257 INFO L168 Benchmark]: Boogie Procedure Inliner took 189.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:04:07,257 INFO L168 Benchmark]: Boogie Preprocessor took 455.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -920.8 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:04:07,258 INFO L168 Benchmark]: RCFGBuilder took 5337.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 198.6 MB). Peak memory consumption was 198.6 MB. Max. memory is 7.1 GB. [2018-07-24 14:04:07,259 INFO L168 Benchmark]: TraceAbstraction took 233891.60 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 1.3 GB in the end (delta: 718.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 14:04:07,264 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1039.45 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 189.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 455.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -920.8 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5337.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 198.6 MB). Peak memory consumption was 198.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233891.60 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 1.3 GB in the end (delta: 718.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while BasicCegarLoop was constructing difference of abstraction (42426states) and interpolant automaton (currently 5 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (77 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 233.8s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 163.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2006 SDtfs, 17886 SDslu, 3091 SDs, 0 SdLazy, 31075 SolverSat, 7052 SolverUnsat, 30 SolverUnknown, 0 SolverNotchecked, 129.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9060 GetRequests, 8454 SyntacticMatches, 363 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10689 ImplicationChecksByTransitivity, 68.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42426occurred in iteration=10, 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: 5.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 9162 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 59.2s InterpolantComputationTime, 7350 NumberOfCodeBlocks, 7350 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 11718 ConstructedInterpolants, 635 QuantifiedInterpolants, 27435324 SizeOfPredicates, 17 NumberOfNonLiveVariables, 7402 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 37 InterpolantComputations, 10 PerfectInterpolantSequences, 8268/10325 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/Problem11_label25_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-04-07-277.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label25_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-04-07-277.csv Completed graceful shutdown