java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-new/nested_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 15:54:55,398 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 15:54:55,401 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 15:54:55,424 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 15:54:55,424 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 15:54:55,426 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 15:54:55,428 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 15:54:55,430 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 15:54:55,431 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 15:54:55,432 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 15:54:55,433 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 15:54:55,434 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 15:54:55,435 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 15:54:55,436 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 15:54:55,437 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 15:54:55,437 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 15:54:55,438 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 15:54:55,440 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 15:54:55,442 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 15:54:55,444 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 15:54:55,445 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 15:54:55,446 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 15:54:55,449 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 15:54:55,449 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 15:54:55,450 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 15:54:55,451 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 15:54:55,452 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 15:54:55,453 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 15:54:55,454 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 15:54:55,455 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 15:54:55,455 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 15:54:55,456 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 15:54:55,456 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 15:54:55,457 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 15:54:55,458 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 15:54:55,459 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 15:54:55,459 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 15:54:55,481 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 15:54:55,481 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 15:54:55,483 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 15:54:55,483 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 15:54:55,483 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 15:54:55,486 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 15:54:55,486 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 15:54:55,486 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 15:54:55,486 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 15:54:55,486 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 15:54:55,487 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 15:54:55,488 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 15:54:55,488 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 15:54:55,488 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 15:54:55,488 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 15:54:55,489 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 15:54:55,489 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 15:54:55,490 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 15:54:55,490 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 15:54:55,490 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 15:54:55,490 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 15:54:55,490 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 15:54:55,491 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 15:54:55,491 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 15:54:55,491 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 15:54:55,491 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 15:54:55,491 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 15:54:55,492 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 15:54:55,492 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 15:54:55,492 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 15:54:55,492 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 15:54:55,492 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 15:54:55,493 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 15:54:55,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 15:54:55,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 15:54:55,561 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 15:54:55,563 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 15:54:55,564 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 15:54:55,565 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/nested_true-unreach-call_true-termination.i [2018-09-14 15:54:55,925 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c7d33090/d05a21591c4e4c7f86f582b6b56efa3a/FLAGc44725079 [2018-09-14 15:54:56,068 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 15:54:56,069 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/nested_true-unreach-call_true-termination.i [2018-09-14 15:54:56,074 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c7d33090/d05a21591c4e4c7f86f582b6b56efa3a/FLAGc44725079 [2018-09-14 15:54:56,091 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c7d33090/d05a21591c4e4c7f86f582b6b56efa3a [2018-09-14 15:54:56,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 15:54:56,109 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 15:54:56,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 15:54:56,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 15:54:56,117 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 15:54:56,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:54:56" (1/1) ... [2018-09-14 15:54:56,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddb7865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56, skipping insertion in model container [2018-09-14 15:54:56,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:54:56" (1/1) ... [2018-09-14 15:54:56,134 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 15:54:56,327 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:54:56,345 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 15:54:56,351 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:54:56,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56 WrapperNode [2018-09-14 15:54:56,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 15:54:56,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 15:54:56,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 15:54:56,366 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 15:54:56,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56" (1/1) ... [2018-09-14 15:54:56,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56" (1/1) ... [2018-09-14 15:54:56,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 15:54:56,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 15:54:56,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 15:54:56,389 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 15:54:56,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56" (1/1) ... [2018-09-14 15:54:56,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56" (1/1) ... [2018-09-14 15:54:56,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56" (1/1) ... [2018-09-14 15:54:56,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56" (1/1) ... [2018-09-14 15:54:56,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56" (1/1) ... [2018-09-14 15:54:56,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56" (1/1) ... [2018-09-14 15:54:56,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56" (1/1) ... [2018-09-14 15:54:56,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 15:54:56,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 15:54:56,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 15:54:56,413 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 15:54:56,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 15:54:56,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 15:54:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 15:54:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 15:54:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 15:54:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 15:54:56,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 15:54:56,488 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-14 15:54:56,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-14 15:54:56,879 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 15:54:56,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:54:56 BoogieIcfgContainer [2018-09-14 15:54:56,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 15:54:56,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 15:54:56,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 15:54:56,885 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 15:54:56,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 03:54:56" (1/3) ... [2018-09-14 15:54:56,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a94a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:54:56, skipping insertion in model container [2018-09-14 15:54:56,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:54:56" (2/3) ... [2018-09-14 15:54:56,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a94a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:54:56, skipping insertion in model container [2018-09-14 15:54:56,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:54:56" (3/3) ... [2018-09-14 15:54:56,890 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call_true-termination.i [2018-09-14 15:54:56,900 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 15:54:56,908 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 15:54:56,959 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 15:54:56,960 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 15:54:56,960 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 15:54:56,960 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 15:54:56,960 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 15:54:56,961 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 15:54:56,961 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 15:54:56,961 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 15:54:56,961 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 15:54:56,980 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-09-14 15:54:56,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-14 15:54:56,987 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:54:56,988 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:54:56,989 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:54:56,995 INFO L82 PathProgramCache]: Analyzing trace with hash -702630595, now seen corresponding path program 1 times [2018-09-14 15:54:56,998 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:54:57,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:54:57,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:54:57,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:54:57,054 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:54:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:54:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:54:57,126 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:54:57,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-14 15:54:57,127 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:54:57,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-14 15:54:57,143 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-14 15:54:57,144 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-14 15:54:57,146 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-09-14 15:54:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:54:57,168 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2018-09-14 15:54:57,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 15:54:57,170 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-09-14 15:54:57,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:54:57,179 INFO L225 Difference]: With dead ends: 43 [2018-09-14 15:54:57,180 INFO L226 Difference]: Without dead ends: 18 [2018-09-14 15:54:57,184 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-14 15:54:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-14 15:54:57,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-14 15:54:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-14 15:54:57,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-09-14 15:54:57,223 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2018-09-14 15:54:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:54:57,224 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-09-14 15:54:57,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-14 15:54:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-09-14 15:54:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-14 15:54:57,225 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:54:57,225 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:54:57,226 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:54:57,226 INFO L82 PathProgramCache]: Analyzing trace with hash -972126638, now seen corresponding path program 1 times [2018-09-14 15:54:57,226 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:54:57,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:54:57,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:54:57,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:54:57,228 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:54:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:54:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:54:57,333 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:54:57,334 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 15:54:57,334 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:54:57,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 15:54:57,336 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 15:54:57,336 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-14 15:54:57,336 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2018-09-14 15:54:57,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:54:57,417 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-09-14 15:54:57,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 15:54:57,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-09-14 15:54:57,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:54:57,420 INFO L225 Difference]: With dead ends: 29 [2018-09-14 15:54:57,420 INFO L226 Difference]: Without dead ends: 24 [2018-09-14 15:54:57,421 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-14 15:54:57,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-14 15:54:57,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-09-14 15:54:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-14 15:54:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-09-14 15:54:57,428 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2018-09-14 15:54:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:54:57,429 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-09-14 15:54:57,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 15:54:57,429 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-09-14 15:54:57,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-14 15:54:57,430 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:54:57,430 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:54:57,430 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:54:57,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1998515670, now seen corresponding path program 1 times [2018-09-14 15:54:57,431 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:54:57,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:54:57,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:54:57,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:54:57,433 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:54:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:54:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:54:57,505 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:54:57,506 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 15:54:57,506 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:54:57,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 15:54:57,507 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 15:54:57,507 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-14 15:54:57,507 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 4 states. [2018-09-14 15:54:57,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:54:57,590 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2018-09-14 15:54:57,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 15:54:57,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-09-14 15:54:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:54:57,592 INFO L225 Difference]: With dead ends: 34 [2018-09-14 15:54:57,592 INFO L226 Difference]: Without dead ends: 23 [2018-09-14 15:54:57,593 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-14 15:54:57,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-14 15:54:57,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-09-14 15:54:57,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-14 15:54:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-09-14 15:54:57,600 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2018-09-14 15:54:57,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:54:57,602 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-09-14 15:54:57,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 15:54:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-09-14 15:54:57,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-14 15:54:57,603 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:54:57,603 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:54:57,603 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:54:57,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1293803971, now seen corresponding path program 1 times [2018-09-14 15:54:57,604 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:54:57,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:54:57,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:54:57,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:54:57,606 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:54:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:54:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:54:57,687 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:54:57,688 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:54:57,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:54:57,702 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:54:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:54:57,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:54:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:54:57,878 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:54:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:54:58,059 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:54:58,059 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:54:58,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:54:58,083 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:54:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:54:58,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:54:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:54:58,115 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:54:58,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:54:58,136 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:54:58,136 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 10 [2018-09-14 15:54:58,136 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:54:58,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 15:54:58,137 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 15:54:58,138 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-09-14 15:54:58,138 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2018-09-14 15:54:58,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:54:58,458 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-09-14 15:54:58,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:54:58,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-09-14 15:54:58,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:54:58,462 INFO L225 Difference]: With dead ends: 39 [2018-09-14 15:54:58,462 INFO L226 Difference]: Without dead ends: 26 [2018-09-14 15:54:58,463 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-09-14 15:54:58,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-14 15:54:58,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-09-14 15:54:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-14 15:54:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-09-14 15:54:58,473 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2018-09-14 15:54:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:54:58,474 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-09-14 15:54:58,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 15:54:58,475 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-09-14 15:54:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-14 15:54:58,476 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:54:58,476 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:54:58,477 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:54:58,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1379909750, now seen corresponding path program 2 times [2018-09-14 15:54:58,477 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:54:58,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:54:58,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:54:58,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:54:58,480 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:54:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:54:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:54:58,632 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:54:58,633 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:54:58,648 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:54:58,649 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:54:58,669 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:54:58,669 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:54:58,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:54:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 15:54:58,864 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:54:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 15:54:58,988 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:54:58,988 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:54:59,004 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:54:59,004 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:54:59,024 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:54:59,025 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:54:59,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:54:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 15:54:59,035 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:54:59,055 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 15:54:59,057 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:54:59,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 15:54:59,057 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:54:59,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 15:54:59,058 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 15:54:59,058 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-09-14 15:54:59,059 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 9 states. [2018-09-14 15:54:59,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:54:59,710 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2018-09-14 15:54:59,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 15:54:59,711 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-09-14 15:54:59,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:54:59,713 INFO L225 Difference]: With dead ends: 73 [2018-09-14 15:54:59,713 INFO L226 Difference]: Without dead ends: 57 [2018-09-14 15:54:59,714 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=189, Invalid=363, Unknown=0, NotChecked=0, Total=552 [2018-09-14 15:54:59,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-14 15:54:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2018-09-14 15:54:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-09-14 15:54:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2018-09-14 15:54:59,723 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 24 [2018-09-14 15:54:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:54:59,724 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2018-09-14 15:54:59,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 15:54:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2018-09-14 15:54:59,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-14 15:54:59,726 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:54:59,726 INFO L376 BasicCegarLoop]: trace histogram [8, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:54:59,726 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:54:59,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1699386968, now seen corresponding path program 3 times [2018-09-14 15:54:59,727 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:54:59,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:54:59,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:54:59,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:54:59,728 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:54:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:54:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-14 15:54:59,856 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:54:59,856 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-14 15:54:59,873 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-14 15:54:59,874 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-14 15:54:59,896 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-14 15:54:59,897 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:54:59,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-09-14 15:55:00,047 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-09-14 15:55:00,197 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:00,197 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:00,212 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-14 15:55:00,213 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-14 15:55:00,240 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-14 15:55:00,240 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:00,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-09-14 15:55:00,256 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:00,281 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-09-14 15:55:00,282 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:00,283 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 6] total 15 [2018-09-14 15:55:00,283 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:00,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-14 15:55:00,284 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-14 15:55:00,284 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-09-14 15:55:00,284 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 11 states. [2018-09-14 15:55:00,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:00,980 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2018-09-14 15:55:00,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-14 15:55:00,981 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-09-14 15:55:00,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:00,982 INFO L225 Difference]: With dead ends: 106 [2018-09-14 15:55:00,983 INFO L226 Difference]: Without dead ends: 84 [2018-09-14 15:55:00,984 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=400, Invalid=790, Unknown=0, NotChecked=0, Total=1190 [2018-09-14 15:55:00,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-09-14 15:55:00,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2018-09-14 15:55:00,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-14 15:55:00,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2018-09-14 15:55:00,997 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 41 [2018-09-14 15:55:00,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:00,998 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2018-09-14 15:55:00,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-14 15:55:00,998 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2018-09-14 15:55:01,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-14 15:55:01,000 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:01,000 INFO L376 BasicCegarLoop]: trace histogram [15, 12, 12, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:01,001 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:01,001 INFO L82 PathProgramCache]: Analyzing trace with hash -319190378, now seen corresponding path program 4 times [2018-09-14 15:55:01,001 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:01,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:01,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:55:01,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:01,003 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-09-14 15:55:01,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:01,231 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:55:01,246 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-14 15:55:01,246 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-14 15:55:01,294 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-14 15:55:01,295 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:01,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-09-14 15:55:01,484 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-09-14 15:55:01,633 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:01,633 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:01,649 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-14 15:55:01,649 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-14 15:55:01,698 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-14 15:55:01,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:01,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-09-14 15:55:01,720 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-09-14 15:55:01,746 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:01,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 19 [2018-09-14 15:55:01,746 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:01,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 15:55:01,748 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 15:55:01,748 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-09-14 15:55:01,749 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 13 states. [2018-09-14 15:55:01,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:01,831 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2018-09-14 15:55:01,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 15:55:01,836 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2018-09-14 15:55:01,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:01,837 INFO L225 Difference]: With dead ends: 119 [2018-09-14 15:55:01,837 INFO L226 Difference]: Without dead ends: 77 [2018-09-14 15:55:01,838 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-09-14 15:55:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-09-14 15:55:01,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2018-09-14 15:55:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-14 15:55:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2018-09-14 15:55:01,851 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 64 [2018-09-14 15:55:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:01,852 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2018-09-14 15:55:01,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 15:55:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2018-09-14 15:55:01,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-14 15:55:01,854 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:01,854 INFO L376 BasicCegarLoop]: trace histogram [18, 15, 15, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:01,855 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:01,855 INFO L82 PathProgramCache]: Analyzing trace with hash 414540755, now seen corresponding path program 5 times [2018-09-14 15:55:01,855 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:01,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:01,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:55:01,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:01,857 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 200 proven. 40 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-09-14 15:55:02,144 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:02,144 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:55:02,155 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-14 15:55:02,156 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:55:02,187 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-09-14 15:55:02,187 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:02,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 200 proven. 40 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-09-14 15:55:02,290 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 200 proven. 40 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-09-14 15:55:02,596 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:02,596 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:02,614 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-14 15:55:02,614 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:55:02,757 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-09-14 15:55:02,757 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:02,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:02,779 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 200 proven. 40 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-09-14 15:55:02,779 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 200 proven. 40 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-09-14 15:55:02,936 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:02,937 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 20 [2018-09-14 15:55:02,937 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:02,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 15:55:02,939 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 15:55:02,939 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=225, Unknown=0, NotChecked=0, Total=380 [2018-09-14 15:55:02,940 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 15 states. [2018-09-14 15:55:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:03,002 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2018-09-14 15:55:03,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 15:55:03,003 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 73 [2018-09-14 15:55:03,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:03,005 INFO L225 Difference]: With dead ends: 134 [2018-09-14 15:55:03,005 INFO L226 Difference]: Without dead ends: 86 [2018-09-14 15:55:03,006 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 277 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=155, Invalid=225, Unknown=0, NotChecked=0, Total=380 [2018-09-14 15:55:03,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-09-14 15:55:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2018-09-14 15:55:03,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-14 15:55:03,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2018-09-14 15:55:03,018 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 73 [2018-09-14 15:55:03,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:03,019 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2018-09-14 15:55:03,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 15:55:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2018-09-14 15:55:03,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-14 15:55:03,020 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:03,021 INFO L376 BasicCegarLoop]: trace histogram [21, 18, 18, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:03,021 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:03,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1138844106, now seen corresponding path program 6 times [2018-09-14 15:55:03,021 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:03,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:03,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:55:03,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:03,023 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 274 proven. 57 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2018-09-14 15:55:03,174 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:03,174 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:55:03,183 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-14 15:55:03,183 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-09-14 15:55:03,210 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-09-14 15:55:03,210 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:03,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-09-14 15:55:03,440 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-09-14 15:55:03,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:03,570 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:03,585 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-14 15:55:03,585 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-09-14 15:55:03,651 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-09-14 15:55:03,652 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:03,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-09-14 15:55:03,681 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-09-14 15:55:03,751 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:03,751 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7, 7, 7] total 20 [2018-09-14 15:55:03,751 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:03,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 15:55:03,752 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 15:55:03,752 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2018-09-14 15:55:03,753 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 15 states. [2018-09-14 15:55:05,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:05,135 INFO L93 Difference]: Finished difference Result 201 states and 214 transitions. [2018-09-14 15:55:05,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-14 15:55:05,135 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2018-09-14 15:55:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:05,137 INFO L225 Difference]: With dead ends: 201 [2018-09-14 15:55:05,137 INFO L226 Difference]: Without dead ends: 147 [2018-09-14 15:55:05,140 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1143, Invalid=2397, Unknown=0, NotChecked=0, Total=3540 [2018-09-14 15:55:05,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-14 15:55:05,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2018-09-14 15:55:05,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-09-14 15:55:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2018-09-14 15:55:05,156 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 82 [2018-09-14 15:55:05,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:05,156 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2018-09-14 15:55:05,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 15:55:05,157 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2018-09-14 15:55:05,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-09-14 15:55:05,158 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:05,159 INFO L376 BasicCegarLoop]: trace histogram [32, 28, 28, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:05,159 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:05,159 INFO L82 PathProgramCache]: Analyzing trace with hash -293632002, now seen corresponding path program 7 times [2018-09-14 15:55:05,159 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:05,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:05,160 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:55:05,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:05,160 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 539 proven. 77 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-09-14 15:55:05,400 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:05,400 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:55:05,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:55:05,412 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:55:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:05,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:05,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 539 proven. 77 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-09-14 15:55:05,579 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 539 proven. 77 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-09-14 15:55:05,731 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:05,731 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:05,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:55:05,747 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:55:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:05,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 539 proven. 77 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-09-14 15:55:05,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 539 proven. 77 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-09-14 15:55:05,912 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:05,913 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11] total 22 [2018-09-14 15:55:05,913 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:05,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-14 15:55:05,913 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-14 15:55:05,914 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2018-09-14 15:55:05,914 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand 19 states. [2018-09-14 15:55:06,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:06,069 INFO L93 Difference]: Finished difference Result 220 states and 231 transitions. [2018-09-14 15:55:06,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 15:55:06,071 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 117 [2018-09-14 15:55:06,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:06,072 INFO L225 Difference]: With dead ends: 220 [2018-09-14 15:55:06,072 INFO L226 Difference]: Without dead ends: 134 [2018-09-14 15:55:06,073 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 445 SyntacticMatches, 12 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2018-09-14 15:55:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-09-14 15:55:06,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2018-09-14 15:55:06,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-09-14 15:55:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2018-09-14 15:55:06,104 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 117 [2018-09-14 15:55:06,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:06,104 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2018-09-14 15:55:06,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-14 15:55:06,105 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2018-09-14 15:55:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-14 15:55:06,109 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:06,109 INFO L376 BasicCegarLoop]: trace histogram [36, 32, 32, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:06,109 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:06,109 INFO L82 PathProgramCache]: Analyzing trace with hash -210025646, now seen corresponding path program 8 times [2018-09-14 15:55:06,110 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:06,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:06,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:55:06,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:06,111 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 686 proven. 100 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2018-09-14 15:55:06,269 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:06,269 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:55:06,277 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:55:06,277 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:55:06,328 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:55:06,329 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:06,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 686 proven. 100 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2018-09-14 15:55:06,485 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 686 proven. 100 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2018-09-14 15:55:06,604 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:06,604 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:06,620 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:55:06,620 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:55:06,700 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:55:06,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:06,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 686 proven. 100 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2018-09-14 15:55:06,729 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 686 proven. 100 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2018-09-14 15:55:06,915 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:06,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12] total 23 [2018-09-14 15:55:06,915 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:06,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-14 15:55:06,916 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-14 15:55:06,917 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2018-09-14 15:55:06,917 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand 21 states. [2018-09-14 15:55:07,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:07,126 INFO L93 Difference]: Finished difference Result 241 states and 252 transitions. [2018-09-14 15:55:07,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 15:55:07,130 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 129 [2018-09-14 15:55:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:07,131 INFO L225 Difference]: With dead ends: 241 [2018-09-14 15:55:07,131 INFO L226 Difference]: Without dead ends: 146 [2018-09-14 15:55:07,132 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 489 SyntacticMatches, 16 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2018-09-14 15:55:07,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-09-14 15:55:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2018-09-14 15:55:07,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-09-14 15:55:07,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 146 transitions. [2018-09-14 15:55:07,148 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 146 transitions. Word has length 129 [2018-09-14 15:55:07,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:07,149 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 146 transitions. [2018-09-14 15:55:07,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-14 15:55:07,149 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 146 transitions. [2018-09-14 15:55:07,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-09-14 15:55:07,151 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:07,151 INFO L376 BasicCegarLoop]: trace histogram [40, 36, 36, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:07,152 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:07,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1652018178, now seen corresponding path program 9 times [2018-09-14 15:55:07,152 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:07,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:07,153 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:55:07,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:07,154 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 851 proven. 126 refuted. 0 times theorem prover too weak. 1239 trivial. 0 not checked. [2018-09-14 15:55:07,416 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:07,416 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:55:07,427 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-14 15:55:07,428 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-14 15:55:07,457 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-09-14 15:55:07,458 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:07,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 854 proven. 126 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-09-14 15:55:07,629 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 11 proven. 969 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-09-14 15:55:07,782 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:07,782 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 19 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 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:07,798 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-14 15:55:07,798 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-14 15:55:07,916 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-09-14 15:55:07,916 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:07,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 854 proven. 126 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-09-14 15:55:07,962 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 11 proven. 969 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-09-14 15:55:08,141 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:08,141 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13] total 23 [2018-09-14 15:55:08,141 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:08,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-14 15:55:08,142 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-14 15:55:08,142 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-09-14 15:55:08,142 INFO L87 Difference]: Start difference. First operand 142 states and 146 transitions. Second operand 23 states. [2018-09-14 15:55:08,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:08,293 INFO L93 Difference]: Finished difference Result 262 states and 273 transitions. [2018-09-14 15:55:08,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-14 15:55:08,293 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 141 [2018-09-14 15:55:08,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:08,294 INFO L225 Difference]: With dead ends: 262 [2018-09-14 15:55:08,294 INFO L226 Difference]: Without dead ends: 158 [2018-09-14 15:55:08,295 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 532 SyntacticMatches, 22 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=340, Unknown=0, NotChecked=0, Total=552 [2018-09-14 15:55:08,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-09-14 15:55:08,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-09-14 15:55:08,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-09-14 15:55:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 158 transitions. [2018-09-14 15:55:08,310 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 158 transitions. Word has length 141 [2018-09-14 15:55:08,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:08,310 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 158 transitions. [2018-09-14 15:55:08,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-14 15:55:08,310 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 158 transitions. [2018-09-14 15:55:08,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-14 15:55:08,313 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:08,313 INFO L376 BasicCegarLoop]: trace histogram [44, 40, 40, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:08,313 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:08,313 INFO L82 PathProgramCache]: Analyzing trace with hash -969563822, now seen corresponding path program 10 times [2018-09-14 15:55:08,314 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:08,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:08,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:55:08,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:08,315 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-09-14 15:55:08,525 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:08,525 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:55:08,534 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-14 15:55:08,535 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-14 15:55:08,583 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-14 15:55:08,583 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:08,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-09-14 15:55:08,773 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-09-14 15:55:09,029 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:09,029 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 21 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 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:09,051 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-14 15:55:09,052 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-14 15:55:09,167 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-14 15:55:09,167 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:09,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-09-14 15:55:09,225 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-09-14 15:55:09,310 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:09,310 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 19 [2018-09-14 15:55:09,311 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:09,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 15:55:09,311 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 15:55:09,311 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-09-14 15:55:09,312 INFO L87 Difference]: Start difference. First operand 154 states and 158 transitions. Second operand 13 states. [2018-09-14 15:55:09,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:09,417 INFO L93 Difference]: Finished difference Result 227 states and 233 transitions. [2018-09-14 15:55:09,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 15:55:09,417 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 153 [2018-09-14 15:55:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:09,419 INFO L225 Difference]: With dead ends: 227 [2018-09-14 15:55:09,419 INFO L226 Difference]: Without dead ends: 222 [2018-09-14 15:55:09,420 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-09-14 15:55:09,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-09-14 15:55:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 189. [2018-09-14 15:55:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-14 15:55:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 194 transitions. [2018-09-14 15:55:09,437 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 194 transitions. Word has length 153 [2018-09-14 15:55:09,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:09,438 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 194 transitions. [2018-09-14 15:55:09,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 15:55:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 194 transitions. [2018-09-14 15:55:09,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-14 15:55:09,441 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:09,441 INFO L376 BasicCegarLoop]: trace histogram [55, 50, 50, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:09,441 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:09,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1779605514, now seen corresponding path program 11 times [2018-09-14 15:55:09,441 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:09,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:09,442 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:55:09,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:09,443 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-09-14 15:55:10,050 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:10,050 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:55:10,058 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-14 15:55:10,058 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:55:10,144 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-09-14 15:55:10,145 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:10,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-09-14 15:55:10,376 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-09-14 15:55:10,668 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:10,669 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 23 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 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:10,684 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-14 15:55:10,684 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder INSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:55:11,282 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-09-14 15:55:11,282 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:11,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-09-14 15:55:11,355 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-09-14 15:55:11,501 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:11,502 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 20 [2018-09-14 15:55:11,502 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:11,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-14 15:55:11,502 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-14 15:55:11,503 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=225, Unknown=0, NotChecked=0, Total=380 [2018-09-14 15:55:11,503 INFO L87 Difference]: Start difference. First operand 189 states and 194 transitions. Second operand 15 states. [2018-09-14 15:55:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:11,863 INFO L93 Difference]: Finished difference Result 262 states and 269 transitions. [2018-09-14 15:55:11,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 15:55:11,863 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 188 [2018-09-14 15:55:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:11,865 INFO L225 Difference]: With dead ends: 262 [2018-09-14 15:55:11,866 INFO L226 Difference]: Without dead ends: 257 [2018-09-14 15:55:11,866 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 737 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=155, Invalid=225, Unknown=0, NotChecked=0, Total=380 [2018-09-14 15:55:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-09-14 15:55:11,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 224. [2018-09-14 15:55:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-09-14 15:55:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 230 transitions. [2018-09-14 15:55:11,889 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 230 transitions. Word has length 188 [2018-09-14 15:55:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:11,889 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 230 transitions. [2018-09-14 15:55:11,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-14 15:55:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 230 transitions. [2018-09-14 15:55:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-14 15:55:11,892 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:11,892 INFO L376 BasicCegarLoop]: trace histogram [66, 60, 60, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:11,893 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:11,893 INFO L82 PathProgramCache]: Analyzing trace with hash 388824786, now seen corresponding path program 12 times [2018-09-14 15:55:11,893 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:11,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:11,894 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:55:11,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:11,895 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-09-14 15:55:12,337 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:12,337 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:55:12,345 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-14 15:55:12,345 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-09-14 15:55:12,545 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-14 15:55:12,545 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:12,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-09-14 15:55:12,745 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-09-14 15:55:12,900 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:12,900 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 25 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 25 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:12,917 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-14 15:55:12,917 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder MIX_INSIDE_OUTSIDE (IT: FPandBP) [2018-09-14 15:55:13,593 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-14 15:55:13,593 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:13,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-09-14 15:55:13,688 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-09-14 15:55:13,790 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:13,790 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10] total 21 [2018-09-14 15:55:13,790 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:13,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-14 15:55:13,791 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-14 15:55:13,791 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=251, Unknown=0, NotChecked=0, Total=420 [2018-09-14 15:55:13,792 INFO L87 Difference]: Start difference. First operand 224 states and 230 transitions. Second operand 17 states. [2018-09-14 15:55:13,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:13,956 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-09-14 15:55:13,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 15:55:13,956 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 223 [2018-09-14 15:55:13,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:13,958 INFO L225 Difference]: With dead ends: 297 [2018-09-14 15:55:13,958 INFO L226 Difference]: Without dead ends: 292 [2018-09-14 15:55:13,958 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 873 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=251, Unknown=0, NotChecked=0, Total=420 [2018-09-14 15:55:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-09-14 15:55:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 259. [2018-09-14 15:55:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-14 15:55:13,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 266 transitions. [2018-09-14 15:55:13,981 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 266 transitions. Word has length 223 [2018-09-14 15:55:13,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:13,982 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 266 transitions. [2018-09-14 15:55:13,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-14 15:55:13,982 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 266 transitions. [2018-09-14 15:55:13,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-14 15:55:13,986 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:13,987 INFO L376 BasicCegarLoop]: trace histogram [77, 70, 70, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:13,987 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:13,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1062399370, now seen corresponding path program 13 times [2018-09-14 15:55:13,987 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:13,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:13,988 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:55:13,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:13,989 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-09-14 15:55:14,905 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:14,906 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:55:14,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:55:14,925 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:55:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:14,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-09-14 15:55:15,596 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-09-14 15:55:15,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:15,796 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 27 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 27 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:15,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:55:15,812 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:55:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:15,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-09-14 15:55:16,121 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-09-14 15:55:17,168 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:17,168 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11] total 22 [2018-09-14 15:55:17,168 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:17,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-14 15:55:17,169 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-14 15:55:17,169 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2018-09-14 15:55:17,169 INFO L87 Difference]: Start difference. First operand 259 states and 266 transitions. Second operand 19 states. [2018-09-14 15:55:17,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:17,271 INFO L93 Difference]: Finished difference Result 332 states and 341 transitions. [2018-09-14 15:55:17,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 15:55:17,272 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 258 [2018-09-14 15:55:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:17,274 INFO L225 Difference]: With dead ends: 332 [2018-09-14 15:55:17,274 INFO L226 Difference]: Without dead ends: 327 [2018-09-14 15:55:17,275 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1041 GetRequests, 1009 SyntacticMatches, 12 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2018-09-14 15:55:17,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-09-14 15:55:17,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 294. [2018-09-14 15:55:17,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-09-14 15:55:17,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 302 transitions. [2018-09-14 15:55:17,302 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 302 transitions. Word has length 258 [2018-09-14 15:55:17,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:17,303 INFO L480 AbstractCegarLoop]: Abstraction has 294 states and 302 transitions. [2018-09-14 15:55:17,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-14 15:55:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 302 transitions. [2018-09-14 15:55:17,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-09-14 15:55:17,306 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:17,306 INFO L376 BasicCegarLoop]: trace histogram [88, 80, 80, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:17,307 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:17,307 INFO L82 PathProgramCache]: Analyzing trace with hash -790873006, now seen corresponding path program 14 times [2018-09-14 15:55:17,307 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:17,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:17,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:55:17,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:17,308 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-09-14 15:55:17,749 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:17,749 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:55:17,757 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:55:17,758 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:55:17,846 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:55:17,846 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:17,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-09-14 15:55:18,354 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-09-14 15:55:18,577 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:18,577 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 29 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 29 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:18,592 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:55:18,592 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:55:18,769 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:55:18,769 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:18,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-09-14 15:55:18,960 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-09-14 15:55:19,188 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:19,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 12] total 23 [2018-09-14 15:55:19,189 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:19,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-14 15:55:19,190 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-14 15:55:19,190 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2018-09-14 15:55:19,190 INFO L87 Difference]: Start difference. First operand 294 states and 302 transitions. Second operand 21 states. [2018-09-14 15:55:19,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:19,311 INFO L93 Difference]: Finished difference Result 367 states and 377 transitions. [2018-09-14 15:55:19,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 15:55:19,311 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 293 [2018-09-14 15:55:19,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:19,314 INFO L225 Difference]: With dead ends: 367 [2018-09-14 15:55:19,314 INFO L226 Difference]: Without dead ends: 362 [2018-09-14 15:55:19,315 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1182 GetRequests, 1145 SyntacticMatches, 16 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2018-09-14 15:55:19,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-09-14 15:55:19,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 329. [2018-09-14 15:55:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-09-14 15:55:19,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 338 transitions. [2018-09-14 15:55:19,346 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 338 transitions. Word has length 293 [2018-09-14 15:55:19,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:19,346 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 338 transitions. [2018-09-14 15:55:19,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-14 15:55:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 338 transitions. [2018-09-14 15:55:19,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-09-14 15:55:19,348 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:19,348 INFO L376 BasicCegarLoop]: trace histogram [99, 90, 90, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:19,349 INFO L423 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:19,349 INFO L82 PathProgramCache]: Analyzing trace with hash 547939574, now seen corresponding path program 15 times [2018-09-14 15:55:19,349 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:19,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:19,350 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:55:19,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:19,350 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-09-14 15:55:20,477 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:20,477 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:55:20,487 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-14 15:55:20,487 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-14 15:55:20,761 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-14 15:55:20,762 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:20,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-09-14 15:55:21,012 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-09-14 15:55:21,238 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:55:21,238 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 31 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 31 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:55:21,253 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-14 15:55:21,253 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-14 15:55:23,085 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-14 15:55:23,085 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:55:23,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:55:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-09-14 15:55:23,275 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:55:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-09-14 15:55:23,477 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:55:23,478 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13] total 23 [2018-09-14 15:55:23,478 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:55:23,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-14 15:55:23,479 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-14 15:55:23,479 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-09-14 15:55:23,479 INFO L87 Difference]: Start difference. First operand 329 states and 338 transitions. Second operand 23 states. [2018-09-14 15:55:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:24,385 INFO L93 Difference]: Finished difference Result 402 states and 413 transitions. [2018-09-14 15:55:24,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-14 15:55:24,385 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 328 [2018-09-14 15:55:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:24,388 INFO L225 Difference]: With dead ends: 402 [2018-09-14 15:55:24,388 INFO L226 Difference]: Without dead ends: 397 [2018-09-14 15:55:24,389 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1324 GetRequests, 1280 SyntacticMatches, 22 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=212, Invalid=340, Unknown=0, NotChecked=0, Total=552 [2018-09-14 15:55:24,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-09-14 15:55:24,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 364. [2018-09-14 15:55:24,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-09-14 15:55:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 374 transitions. [2018-09-14 15:55:24,439 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 374 transitions. Word has length 328 [2018-09-14 15:55:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:24,440 INFO L480 AbstractCegarLoop]: Abstraction has 364 states and 374 transitions. [2018-09-14 15:55:24,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-14 15:55:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 374 transitions. [2018-09-14 15:55:24,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-09-14 15:55:24,444 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:55:24,444 INFO L376 BasicCegarLoop]: trace histogram [110, 100, 100, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:55:24,444 INFO L423 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:55:24,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1390107090, now seen corresponding path program 16 times [2018-09-14 15:55:24,445 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:55:24,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:24,446 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:55:24,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:55:24,447 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:55:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:55:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 17095 backedges. 17077 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-14 15:55:29,826 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:55:29,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2018-09-14 15:55:29,827 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:55:29,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-14 15:55:29,828 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-14 15:55:29,831 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=5663, Unknown=0, NotChecked=0, Total=10920 [2018-09-14 15:55:29,831 INFO L87 Difference]: Start difference. First operand 364 states and 374 transitions. Second operand 105 states. [2018-09-14 15:55:32,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:55:32,396 INFO L93 Difference]: Finished difference Result 14899 states and 15359 transitions. [2018-09-14 15:55:32,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-14 15:55:32,396 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 363 [2018-09-14 15:55:32,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:55:32,398 INFO L225 Difference]: With dead ends: 14899 [2018-09-14 15:55:32,398 INFO L226 Difference]: Without dead ends: 0 [2018-09-14 15:55:32,424 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2018-09-14 15:55:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 15:55:32,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-14 15:55:32,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-14 15:55:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-14 15:55:32,425 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 363 [2018-09-14 15:55:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:55:32,425 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-14 15:55:32,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-14 15:55:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-14 15:55:32,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-14 15:55:32,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-14 15:55:34,537 WARN L178 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 673 DAG size of output: 664 [2018-09-14 15:55:41,808 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:41,836 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:41,844 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:41,855 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:41,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:41,972 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,008 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,061 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,224 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,402 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,460 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,496 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,649 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,778 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:42,923 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,069 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,092 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,109 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,121 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,299 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,380 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,397 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,469 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,703 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,722 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,890 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:43,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:44,168 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:44,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:44,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:44,300 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:44,454 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:44,478 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:44,502 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:44,654 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:44,812 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:44,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:44,964 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:45,068 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:45,130 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:45,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:45,293 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:45,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:45,512 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:45,554 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:45,613 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:45,744 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:45,810 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:46,111 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:46,283 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:46,311 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:46,332 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:46,521 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:46,599 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:46,740 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:46,770 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:46,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:46,832 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:47,008 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:47,027 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:47,160 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:47,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:47,229 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:47,674 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:47,723 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:47,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:47,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:47,923 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:47,937 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:48,155 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:48,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:48,342 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:48,365 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:48,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:48,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:49,054 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:49,318 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:49,334 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:49,350 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:49,411 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:49,574 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:49,694 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:49,813 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:49,966 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:50,289 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:50,503 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:50,610 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:50,671 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:50,775 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:50,828 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:51,076 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:51,131 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:51,650 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:51,660 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:51,948 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:51,986 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:52,182 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:52,513 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:52,543 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:53,088 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:54,606 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:55,190 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:55,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:55,316 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:55,692 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:55,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:56,035 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:56,252 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:56,602 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:56,798 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:57,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:58,008 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:58,352 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:59,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:55:59,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:00,785 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:01,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:01,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:01,661 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:02,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:03,465 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:05,316 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:05,671 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:07,801 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:09,193 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:14,340 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:14,626 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:18,719 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:19,528 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:21,867 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:22,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:24,813 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:28,596 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:29,405 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:30,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:35,024 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:37,490 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 15:56:42,703 WARN L178 SmtUtils]: Spent 1.14 m on a formula simplification. DAG size of input: 5154 DAG size of output: 1799 [2018-09-14 15:56:49,562 WARN L178 SmtUtils]: Spent 6.81 s on a formula simplification. DAG size of input: 664 DAG size of output: 59 [2018-09-14 15:57:52,451 WARN L178 SmtUtils]: Spent 1.05 m on a formula simplification. DAG size of input: 1775 DAG size of output: 363 [2018-09-14 15:57:52,456 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-14 15:57:52,456 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:57:52,456 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:57:52,456 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-14 15:57:52,456 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-14 15:57:52,456 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-14 15:57:52,456 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 10 24) no Hoare annotation was computed. [2018-09-14 15:57:52,457 INFO L426 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-09-14 15:57:52,457 INFO L426 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-09-14 15:57:52,457 INFO L426 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2018-09-14 15:57:52,457 INFO L422 ceAbstractionStarter]: At program point L17-4(lines 17 21) the Hoare annotation is: (let ((.cse0 (<= 10 main_~m~0)) (.cse1 (<= 10 main_~n~0))) (or (and (<= 30 main_~k~0) (<= main_~i~0 3) .cse0 .cse1) (and .cse0 (<= 100 main_~k~0) .cse1) (and .cse0 (<= 40 main_~k~0) (<= main_~i~0 4) .cse1) (and .cse0 (<= 0 main_~k~0) (<= main_~i~0 0) .cse1) (and .cse0 (<= 60 main_~k~0) (<= main_~i~0 6) .cse1) (and .cse0 (<= 10 main_~k~0) (<= main_~i~0 1) .cse1) (and (<= 80 main_~k~0) .cse0 (<= main_~i~0 8) .cse1) (and (<= 50 main_~k~0) .cse0 (<= main_~i~0 5) .cse1) (and .cse0 (<= main_~i~0 9) .cse1 (<= 90 main_~k~0)) (and (<= 70 main_~k~0) .cse0 (<= main_~i~0 7) .cse1) (and .cse0 (<= 20 main_~k~0) (<= main_~i~0 2) .cse1))) [2018-09-14 15:57:52,457 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 10 24) no Hoare annotation was computed. [2018-09-14 15:57:52,458 INFO L422 ceAbstractionStarter]: At program point L17-5(lines 17 21) the Hoare annotation is: (and (<= 10 main_~m~0) (<= 100 main_~k~0) (<= 10 main_~n~0)) [2018-09-14 15:57:52,458 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 10 24) the Hoare annotation is: true [2018-09-14 15:57:52,458 INFO L426 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-09-14 15:57:52,458 INFO L426 ceAbstractionStarter]: For program point L18-1(lines 18 20) no Hoare annotation was computed. [2018-09-14 15:57:52,458 INFO L426 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-09-14 15:57:52,458 INFO L426 ceAbstractionStarter]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2018-09-14 15:57:52,460 INFO L422 ceAbstractionStarter]: At program point L18-4(lines 18 20) the Hoare annotation is: (let ((.cse4 (<= main_~j~0 5)) (.cse0 (<= 10 main_~m~0)) (.cse32 (<= main_~j~0 6))) (let ((.cse14 (<= main_~j~0 8)) (.cse21 (<= main_~j~0 2)) (.cse25 (<= main_~j~0 3)) (.cse2 (<= main_~j~0 9)) (.cse38 (<= main_~j~0 1)) (.cse18 (<= main_~j~0 4)) (.cse11 (<= main_~j~0 0)) (.cse40 (and .cse0 .cse32)) (.cse36 (and .cse4 .cse0)) (.cse3 (<= 10 main_~n~0))) (let ((.cse30 (<= 80 main_~k~0)) (.cse22 (<= 70 main_~k~0)) (.cse28 (and .cse36 .cse3)) (.cse16 (and .cse40 .cse3)) (.cse27 (<= 60 main_~k~0)) (.cse31 (and .cse0 .cse11)) (.cse37 (<= 20 main_~k~0)) (.cse29 (and .cse0 .cse18)) (.cse23 (<= main_~i~0 5)) (.cse13 (and .cse0 .cse38 .cse3)) (.cse12 (<= main_~i~0 8)) (.cse39 (<= 90 main_~k~0)) (.cse9 (<= 10 main_~k~0)) (.cse35 (<= 50 main_~k~0)) (.cse17 (<= main_~i~0 7)) (.cse26 (and .cse0 .cse2)) (.cse33 (and .cse0 .cse25 .cse3)) (.cse34 (<= 30 main_~k~0)) (.cse19 (<= main_~i~0 0)) (.cse20 (<= main_~i~0 3)) (.cse5 (and .cse0 .cse21 .cse3)) (.cse10 (<= main_~i~0 1)) (.cse1 (<= main_~i~0 2)) (.cse8 (<= main_~j~0 7)) (.cse24 (and .cse14 .cse0)) (.cse6 (<= main_~i~0 6)) (.cse7 (<= (+ main_~i~0 1) main_~n~0)) (.cse41 (<= 40 main_~k~0)) (.cse15 (<= main_~i~0 4))) (or (and .cse0 (<= 29 main_~k~0) .cse1 .cse2 .cse3) (and .cse4 .cse0 (<= 25 main_~k~0) .cse1 .cse3) (and (<= 62 main_~k~0) .cse5 .cse6) (and (and .cse7 .cse0 .cse8 .cse3) (<= 97 main_~k~0)) (and .cse0 .cse9 .cse10 .cse11 .cse3) (and (<= 81 main_~k~0) .cse12 .cse13) (and .cse5 (<= 82 main_~k~0) .cse12) (and .cse14 .cse0 .cse15 (<= 48 main_~k~0) .cse3) (and .cse16 .cse17 (<= 76 main_~k~0)) (and .cse0 .cse15 .cse18 (<= 44 main_~k~0) .cse3) (and .cse0 (<= 7 main_~k~0) .cse8 .cse19 .cse3) (and .cse4 .cse0 (<= 45 main_~k~0) .cse15 .cse3) (and .cse20 .cse0 .cse21 (<= 32 main_~k~0) .cse3) (and .cse22 .cse0 .cse6 .cse3) (and (<= 2 main_~k~0) .cse0 .cse21 .cse19 .cse3) (and .cse23 .cse13 (<= 51 main_~k~0)) (and (<= 58 main_~k~0) .cse23 .cse3 .cse24) (and .cse0 .cse25 .cse15 (<= 43 main_~k~0) .cse3) (and (<= 89 main_~k~0) .cse26 .cse12 .cse3) (and (<= 66 main_~k~0) .cse16 .cse6) (and .cse0 .cse27 .cse23 .cse3) (and (<= 95 main_~k~0) (and .cse7 .cse28)) (and .cse0 .cse10 (<= 17 main_~k~0) .cse8 .cse3) (and (<= 33 main_~k~0) .cse20 .cse0 .cse25 .cse3) (and .cse29 (<= 74 main_~k~0) .cse17 .cse3) (and .cse30 .cse31 .cse12 .cse3) (and .cse0 .cse1 .cse18 .cse3 (<= 24 main_~k~0)) (and .cse14 .cse0 (<= 8 main_~k~0) .cse19 .cse3) (and (<= 23 main_~k~0) .cse0 .cse25 .cse1 .cse3) (and .cse0 .cse15 .cse2 (<= 49 main_~k~0) .cse3) (and (<= 86 main_~k~0) .cse16 .cse12) (and .cse5 .cse17 (<= 72 main_~k~0)) (and .cse12 .cse3 .cse24 (<= 88 main_~k~0)) (and .cse0 (<= 26 main_~k~0) .cse1 .cse3 .cse32) (and (and .cse29 .cse7 .cse3) (<= 94 main_~k~0)) (and .cse13 .cse15 (<= 41 main_~k~0)) (and .cse33 .cse17 (<= 73 main_~k~0)) (and .cse0 .cse25 (<= 3 main_~k~0) .cse19 .cse3) (and .cse34 .cse0 .cse1 .cse3) (and .cse30 .cse0 .cse17 .cse3) (and .cse0 .cse18 .cse19 (<= 4 main_~k~0) .cse3) (and .cse26 .cse17 (<= 79 main_~k~0) .cse3) (and (<= 37 main_~k~0) .cse20 .cse0 .cse8 .cse3) (and .cse0 .cse23 .cse8 .cse3 (<= 57 main_~k~0)) (and (<= 93 main_~k~0) (and .cse7 .cse33)) (and .cse20 .cse0 (<= 36 main_~k~0) .cse3 .cse32) (and (<= 64 main_~k~0) .cse29 .cse6 .cse3) (and .cse35 .cse23 .cse3 .cse31) (and .cse22 .cse31 .cse17 .cse3) (and .cse0 .cse15 (<= 46 main_~k~0) .cse3 .cse32) (and (<= 85 main_~k~0) .cse12 .cse28) (and (<= 16 main_~k~0) .cse0 .cse10 .cse3 .cse32) (and (<= 59 main_~k~0) .cse23 .cse26 .cse3) (and .cse0 (<= 0 main_~k~0) .cse11 .cse19 .cse3) (and (<= 75 main_~k~0) .cse36 .cse17 .cse3) (and .cse20 .cse0 .cse18 (<= 34 main_~k~0) .cse3) (and .cse0 .cse10 .cse21 (<= 12 main_~k~0) .cse3) (and (<= 96 main_~k~0) (and .cse7 .cse16)) (and .cse0 .cse37 .cse1 .cse11 .cse3) (and .cse6 .cse13 (<= 61 main_~k~0)) (and (<= 54 main_~k~0) .cse0 .cse23 .cse18 .cse3) (and (<= 91 main_~k~0) (and .cse7 .cse13)) (and .cse14 (<= 28 main_~k~0) .cse0 .cse1 .cse3) (and .cse0 (<= 6 main_~k~0) .cse19 .cse3 .cse32) (and .cse20 .cse4 .cse0 (<= 35 main_~k~0) .cse3) (and .cse23 (<= 52 main_~k~0) .cse5) (and .cse0 .cse10 .cse2 .cse3 (<= 19 main_~k~0)) (and .cse4 .cse0 (<= 15 main_~k~0) .cse10 .cse3) (and (<= 53 main_~k~0) .cse0 .cse25 .cse23 .cse3) (and .cse0 (<= 9 main_~k~0) .cse2 .cse19 .cse3) (and (<= 21 main_~k~0) .cse0 .cse38 .cse1 .cse3) (and .cse27 .cse6 .cse3 .cse31) (and .cse20 .cse0 (<= 39 main_~k~0) .cse2 .cse3) (and (and .cse7 .cse31 .cse3) .cse39) (and (<= 83 main_~k~0) .cse33 .cse12) (and .cse0 .cse12 .cse8 (<= 87 main_~k~0) .cse3) (and .cse0 .cse25 .cse10 (<= 13 main_~k~0) .cse3) (and .cse0 .cse37 .cse10 .cse3) (and .cse0 .cse15 (<= 47 main_~k~0) .cse8 .cse3) (and (<= 69 main_~k~0) .cse26 .cse6 .cse3) (and .cse36 (<= 55 main_~k~0) .cse23 .cse3) (and .cse29 (<= 84 main_~k~0) .cse12 .cse3) (and (<= 56 main_~k~0) .cse23 .cse40 .cse3) (and .cse0 .cse15 .cse21 (<= 42 main_~k~0) .cse3) (and (<= 67 main_~k~0) .cse0 .cse8 .cse6 .cse3) (and (<= 71 main_~k~0) .cse13 .cse17) (and .cse0 .cse12 .cse3 .cse39) (and .cse20 .cse0 .cse41 .cse3) (and .cse14 .cse0 (<= 18 main_~k~0) .cse10 .cse3) (and .cse0 .cse9 .cse19 .cse3) (and .cse0 .cse8 .cse17 (<= 77 main_~k~0) .cse3) (and .cse35 .cse0 .cse15 .cse3) (and (<= 78 main_~k~0) .cse17 .cse3 .cse24) (and (<= 99 main_~k~0) (and .cse7 .cse26 .cse3)) (and .cse0 .cse38 .cse19 .cse3 (<= 1 main_~k~0)) (and .cse20 .cse0 .cse38 .cse3 (<= 31 main_~k~0)) (and .cse0 (<= 22 main_~k~0) .cse1 .cse21 .cse3) (and .cse33 (<= 63 main_~k~0) .cse6) (and (<= 68 main_~k~0) .cse6 .cse3 .cse24) (and (<= 11 main_~k~0) .cse0 .cse38 .cse10 .cse3) (and .cse34 .cse20 .cse0 .cse11 .cse3) (and .cse4 .cse0 (<= 5 main_~k~0) .cse19 .cse3) (and .cse20 .cse14 .cse0 (<= 38 main_~k~0) .cse3) (and (and .cse5 .cse7) (<= 92 main_~k~0)) (and (<= 14 main_~k~0) .cse0 .cse10 .cse18 .cse3) (and .cse0 .cse1 .cse8 .cse3 (<= 27 main_~k~0)) (and (and .cse7 .cse3 .cse24) (<= 98 main_~k~0)) (and .cse36 (<= 65 main_~k~0) .cse6 .cse3) (and (and .cse7 .cse0 .cse3) (<= 100 main_~k~0)) (and .cse0 .cse41 .cse15 .cse11 .cse3))))) [2018-09-14 15:57:52,460 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-09-14 15:57:52,460 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-09-14 15:57:52,460 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-09-14 15:57:52,460 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-14 15:57:52,461 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-14 15:57:52,461 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-14 15:57:52,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 03:57:52 BoogieIcfgContainer [2018-09-14 15:57:52,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 15:57:52,501 INFO L168 Benchmark]: Toolchain (without parser) took 176395.06 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -329.8 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-14 15:57:52,502 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:57:52,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-14 15:57:52,503 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.09 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:57:52,504 INFO L168 Benchmark]: Boogie Preprocessor took 22.92 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:57:52,504 INFO L168 Benchmark]: RCFGBuilder took 468.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-09-14 15:57:52,505 INFO L168 Benchmark]: TraceAbstraction took 175618.87 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 455.8 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-14 15:57:52,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 23.09 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.92 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 468.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 175618.87 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 455.8 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((((((30 <= k && i <= 3) && 10 <= m) && 10 <= n) || ((10 <= m && 100 <= k) && 10 <= n)) || (((10 <= m && 40 <= k) && i <= 4) && 10 <= n)) || (((10 <= m && 0 <= k) && i <= 0) && 10 <= n)) || (((10 <= m && 60 <= k) && i <= 6) && 10 <= n)) || (((10 <= m && 10 <= k) && i <= 1) && 10 <= n)) || (((80 <= k && 10 <= m) && i <= 8) && 10 <= n)) || (((50 <= k && 10 <= m) && i <= 5) && 10 <= n)) || (((10 <= m && i <= 9) && 10 <= n) && 90 <= k)) || (((70 <= k && 10 <= m) && i <= 7) && 10 <= n)) || (((10 <= m && 20 <= k) && i <= 2) && 10 <= n) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((10 <= m && 29 <= k) && i <= 2) && j <= 9) && 10 <= n) || ((((j <= 5 && 10 <= m) && 25 <= k) && i <= 2) && 10 <= n)) || ((62 <= k && (10 <= m && j <= 2) && 10 <= n) && i <= 6)) || ((((i + 1 <= n && 10 <= m) && j <= 7) && 10 <= n) && 97 <= k)) || ((((10 <= m && 10 <= k) && i <= 1) && j <= 0) && 10 <= n)) || ((81 <= k && i <= 8) && (10 <= m && j <= 1) && 10 <= n)) || ((((10 <= m && j <= 2) && 10 <= n) && 82 <= k) && i <= 8)) || ((((j <= 8 && 10 <= m) && i <= 4) && 48 <= k) && 10 <= n)) || ((((10 <= m && j <= 6) && 10 <= n) && i <= 7) && 76 <= k)) || ((((10 <= m && i <= 4) && j <= 4) && 44 <= k) && 10 <= n)) || ((((10 <= m && 7 <= k) && j <= 7) && i <= 0) && 10 <= n)) || ((((j <= 5 && 10 <= m) && 45 <= k) && i <= 4) && 10 <= n)) || ((((i <= 3 && 10 <= m) && j <= 2) && 32 <= k) && 10 <= n)) || (((70 <= k && 10 <= m) && i <= 6) && 10 <= n)) || ((((2 <= k && 10 <= m) && j <= 2) && i <= 0) && 10 <= n)) || ((i <= 5 && (10 <= m && j <= 1) && 10 <= n) && 51 <= k)) || (((58 <= k && i <= 5) && 10 <= n) && j <= 8 && 10 <= m)) || ((((10 <= m && j <= 3) && i <= 4) && 43 <= k) && 10 <= n)) || (((89 <= k && 10 <= m && j <= 9) && i <= 8) && 10 <= n)) || ((66 <= k && (10 <= m && j <= 6) && 10 <= n) && i <= 6)) || (((10 <= m && 60 <= k) && i <= 5) && 10 <= n)) || (95 <= k && i + 1 <= n && (j <= 5 && 10 <= m) && 10 <= n)) || ((((10 <= m && i <= 1) && 17 <= k) && j <= 7) && 10 <= n)) || ((((33 <= k && i <= 3) && 10 <= m) && j <= 3) && 10 <= n)) || ((((10 <= m && j <= 4) && 74 <= k) && i <= 7) && 10 <= n)) || (((80 <= k && 10 <= m && j <= 0) && i <= 8) && 10 <= n)) || ((((10 <= m && i <= 2) && j <= 4) && 10 <= n) && 24 <= k)) || ((((j <= 8 && 10 <= m) && 8 <= k) && i <= 0) && 10 <= n)) || ((((23 <= k && 10 <= m) && j <= 3) && i <= 2) && 10 <= n)) || ((((10 <= m && i <= 4) && j <= 9) && 49 <= k) && 10 <= n)) || ((86 <= k && (10 <= m && j <= 6) && 10 <= n) && i <= 8)) || ((((10 <= m && j <= 2) && 10 <= n) && i <= 7) && 72 <= k)) || (((i <= 8 && 10 <= n) && j <= 8 && 10 <= m) && 88 <= k)) || ((((10 <= m && 26 <= k) && i <= 2) && 10 <= n) && j <= 6)) || ((((10 <= m && j <= 4) && i + 1 <= n) && 10 <= n) && 94 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 4) && 41 <= k)) || ((((10 <= m && j <= 3) && 10 <= n) && i <= 7) && 73 <= k)) || ((((10 <= m && j <= 3) && 3 <= k) && i <= 0) && 10 <= n)) || (((30 <= k && 10 <= m) && i <= 2) && 10 <= n)) || (((80 <= k && 10 <= m) && i <= 7) && 10 <= n)) || ((((10 <= m && j <= 4) && i <= 0) && 4 <= k) && 10 <= n)) || ((((10 <= m && j <= 9) && i <= 7) && 79 <= k) && 10 <= n)) || ((((37 <= k && i <= 3) && 10 <= m) && j <= 7) && 10 <= n)) || ((((10 <= m && i <= 5) && j <= 7) && 10 <= n) && 57 <= k)) || (93 <= k && i + 1 <= n && (10 <= m && j <= 3) && 10 <= n)) || ((((i <= 3 && 10 <= m) && 36 <= k) && 10 <= n) && j <= 6)) || (((64 <= k && 10 <= m && j <= 4) && i <= 6) && 10 <= n)) || (((50 <= k && i <= 5) && 10 <= n) && 10 <= m && j <= 0)) || (((70 <= k && 10 <= m && j <= 0) && i <= 7) && 10 <= n)) || ((((10 <= m && i <= 4) && 46 <= k) && 10 <= n) && j <= 6)) || ((85 <= k && i <= 8) && (j <= 5 && 10 <= m) && 10 <= n)) || ((((16 <= k && 10 <= m) && i <= 1) && 10 <= n) && j <= 6)) || (((59 <= k && i <= 5) && 10 <= m && j <= 9) && 10 <= n)) || ((((10 <= m && 0 <= k) && j <= 0) && i <= 0) && 10 <= n)) || (((75 <= k && j <= 5 && 10 <= m) && i <= 7) && 10 <= n)) || ((((i <= 3 && 10 <= m) && j <= 4) && 34 <= k) && 10 <= n)) || ((((10 <= m && i <= 1) && j <= 2) && 12 <= k) && 10 <= n)) || (96 <= k && i + 1 <= n && (10 <= m && j <= 6) && 10 <= n)) || ((((10 <= m && 20 <= k) && i <= 2) && j <= 0) && 10 <= n)) || ((i <= 6 && (10 <= m && j <= 1) && 10 <= n) && 61 <= k)) || ((((54 <= k && 10 <= m) && i <= 5) && j <= 4) && 10 <= n)) || (91 <= k && i + 1 <= n && (10 <= m && j <= 1) && 10 <= n)) || ((((j <= 8 && 28 <= k) && 10 <= m) && i <= 2) && 10 <= n)) || ((((10 <= m && 6 <= k) && i <= 0) && 10 <= n) && j <= 6)) || ((((i <= 3 && j <= 5) && 10 <= m) && 35 <= k) && 10 <= n)) || ((i <= 5 && 52 <= k) && (10 <= m && j <= 2) && 10 <= n)) || ((((10 <= m && i <= 1) && j <= 9) && 10 <= n) && 19 <= k)) || ((((j <= 5 && 10 <= m) && 15 <= k) && i <= 1) && 10 <= n)) || ((((53 <= k && 10 <= m) && j <= 3) && i <= 5) && 10 <= n)) || ((((10 <= m && 9 <= k) && j <= 9) && i <= 0) && 10 <= n)) || ((((21 <= k && 10 <= m) && j <= 1) && i <= 2) && 10 <= n)) || (((60 <= k && i <= 6) && 10 <= n) && 10 <= m && j <= 0)) || ((((i <= 3 && 10 <= m) && 39 <= k) && j <= 9) && 10 <= n)) || (((i + 1 <= n && 10 <= m && j <= 0) && 10 <= n) && 90 <= k)) || ((83 <= k && (10 <= m && j <= 3) && 10 <= n) && i <= 8)) || ((((10 <= m && i <= 8) && j <= 7) && 87 <= k) && 10 <= n)) || ((((10 <= m && j <= 3) && i <= 1) && 13 <= k) && 10 <= n)) || (((10 <= m && 20 <= k) && i <= 1) && 10 <= n)) || ((((10 <= m && i <= 4) && 47 <= k) && j <= 7) && 10 <= n)) || (((69 <= k && 10 <= m && j <= 9) && i <= 6) && 10 <= n)) || ((((j <= 5 && 10 <= m) && 55 <= k) && i <= 5) && 10 <= n)) || ((((10 <= m && j <= 4) && 84 <= k) && i <= 8) && 10 <= n)) || (((56 <= k && i <= 5) && 10 <= m && j <= 6) && 10 <= n)) || ((((10 <= m && i <= 4) && j <= 2) && 42 <= k) && 10 <= n)) || ((((67 <= k && 10 <= m) && j <= 7) && i <= 6) && 10 <= n)) || ((71 <= k && (10 <= m && j <= 1) && 10 <= n) && i <= 7)) || (((10 <= m && i <= 8) && 10 <= n) && 90 <= k)) || (((i <= 3 && 10 <= m) && 40 <= k) && 10 <= n)) || ((((j <= 8 && 10 <= m) && 18 <= k) && i <= 1) && 10 <= n)) || (((10 <= m && 10 <= k) && i <= 0) && 10 <= n)) || ((((10 <= m && j <= 7) && i <= 7) && 77 <= k) && 10 <= n)) || (((50 <= k && 10 <= m) && i <= 4) && 10 <= n)) || (((78 <= k && i <= 7) && 10 <= n) && j <= 8 && 10 <= m)) || (99 <= k && (i + 1 <= n && 10 <= m && j <= 9) && 10 <= n)) || ((((10 <= m && j <= 1) && i <= 0) && 10 <= n) && 1 <= k)) || ((((i <= 3 && 10 <= m) && j <= 1) && 10 <= n) && 31 <= k)) || ((((10 <= m && 22 <= k) && i <= 2) && j <= 2) && 10 <= n)) || ((((10 <= m && j <= 3) && 10 <= n) && 63 <= k) && i <= 6)) || (((68 <= k && i <= 6) && 10 <= n) && j <= 8 && 10 <= m)) || ((((11 <= k && 10 <= m) && j <= 1) && i <= 1) && 10 <= n)) || ((((30 <= k && i <= 3) && 10 <= m) && j <= 0) && 10 <= n)) || ((((j <= 5 && 10 <= m) && 5 <= k) && i <= 0) && 10 <= n)) || ((((i <= 3 && j <= 8) && 10 <= m) && 38 <= k) && 10 <= n)) || ((((10 <= m && j <= 2) && 10 <= n) && i + 1 <= n) && 92 <= k)) || ((((14 <= k && 10 <= m) && i <= 1) && j <= 4) && 10 <= n)) || ((((10 <= m && i <= 2) && j <= 7) && 10 <= n) && 27 <= k)) || (((i + 1 <= n && 10 <= n) && j <= 8 && 10 <= m) && 98 <= k)) || ((((j <= 5 && 10 <= m) && 65 <= k) && i <= 6) && 10 <= n)) || (((i + 1 <= n && 10 <= m) && 10 <= n) && 100 <= k)) || ((((10 <= m && 40 <= k) && i <= 4) && j <= 0) && 10 <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 175.5s OverallTime, 19 OverallIterations, 110 TraceHistogramMax, 8.3s AutomataDifference, 0.0s DeadEndRemovalTime, 140.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 867 SDtfs, 1725 SDslu, 3360 SDs, 0 SdLazy, 1186 SolverSat, 324 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8846 GetRequests, 8284 SyntacticMatches, 116 SemanticMatches, 446 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5503 ImplicationChecksByTransitivity, 17.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=364occurred in iteration=18, 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: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 285 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 26 PreInvPairs, 5143 NumberOfFragments, 1970 HoareAnnotationTreeSize, 26 FomulaSimplifications, 6246897 FormulaSimplificationTreeSizeReduction, 70.2s HoareSimplificationTime, 8 FomulaSimplificationsInter, 72380 FormulaSimplificationTreeSizeReductionInter, 69.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 5.1s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 6811 NumberOfCodeBlocks, 6515 NumberOfCodeBlocksAsserted, 421 NumberOfCheckSat, 11002 ConstructedInterpolants, 0 QuantifiedInterpolants, 11555734 SizeOfPredicates, 86 NumberOfNonLiveVariables, 8030 ConjunctsInSsa, 248 ConjunctsInUnsatCore, 79 InterpolantComputations, 4 PerfectInterpolantSequences, 75784/281762 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_15-57-52-532.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_15-57-52-532.csv Received shutdown request...