java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label32_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:23:13,392 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:23:13,395 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:23:13,407 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:23:13,408 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:23:13,409 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:23:13,410 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:23:13,412 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:23:13,413 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:23:13,414 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:23:13,415 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:23:13,416 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:23:13,416 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:23:13,417 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:23:13,418 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:23:13,419 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:23:13,420 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:23:13,422 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:23:13,424 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:23:13,426 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:23:13,427 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:23:13,428 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:23:13,434 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:23:13,434 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:23:13,434 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:23:13,435 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:23:13,436 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:23:13,437 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:23:13,438 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:23:13,439 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:23:13,439 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:23:13,440 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:23:13,440 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:23:13,441 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:23:13,442 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:23:13,442 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:23:13,443 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 17:23:13,459 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:23:13,459 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:23:13,460 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:23:13,464 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:23:13,464 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:23:13,464 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:23:13,464 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:23:13,464 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:23:13,465 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:23:13,465 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:23:13,465 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:23:13,466 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:23:13,466 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:23:13,466 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:23:13,467 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:23:13,468 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:23:13,468 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:23:13,468 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:23:13,468 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:23:13,469 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:23:13,470 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:23:13,470 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:23:13,470 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:23:13,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:23:13,470 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:23:13,471 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:23:13,471 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:23:13,471 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:23:13,471 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:23:13,472 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:23:13,472 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:23:13,472 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:23:13,472 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:23:13,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:23:13,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:23:13,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:23:13,557 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:23:13,557 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:23:13,558 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label32_true-unreach-call.c [2018-09-14 17:23:13,906 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4714099b/db00b83053a24a78a246d060dd5285e4/FLAG2fe6befe0 [2018-09-14 17:23:14,408 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:23:14,409 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label32_true-unreach-call.c [2018-09-14 17:23:14,440 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4714099b/db00b83053a24a78a246d060dd5285e4/FLAG2fe6befe0 [2018-09-14 17:23:14,456 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4714099b/db00b83053a24a78a246d060dd5285e4 [2018-09-14 17:23:14,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:23:14,475 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:23:14,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:23:14,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:23:14,487 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:23:14,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:23:14" (1/1) ... [2018-09-14 17:23:14,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e3dc9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:14, skipping insertion in model container [2018-09-14 17:23:14,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:23:14" (1/1) ... [2018-09-14 17:23:14,505 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:23:16,021 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:23:16,043 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:23:16,612 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:23:16,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:16 WrapperNode [2018-09-14 17:23:16,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:23:16,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:23:16,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:23:16,894 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:23:16,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:16" (1/1) ... [2018-09-14 17:23:17,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:16" (1/1) ... [2018-09-14 17:23:17,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:23:17,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:23:17,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:23:17,158 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:23:17,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:16" (1/1) ... [2018-09-14 17:23:17,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:16" (1/1) ... [2018-09-14 17:23:17,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:16" (1/1) ... [2018-09-14 17:23:17,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:16" (1/1) ... [2018-09-14 17:23:17,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:16" (1/1) ... [2018-09-14 17:23:17,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:16" (1/1) ... [2018-09-14 17:23:17,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:16" (1/1) ... [2018-09-14 17:23:18,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:23:18,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:23:18,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:23:18,025 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:23:18,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:16" (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 17:23:18,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:23:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:23:18,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:23:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:23:18,102 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:23:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:23:18,102 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:23:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:23:18,102 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:23:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:23:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:23:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:23:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:23:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:23:29,791 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:23:29,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:23:29 BoogieIcfgContainer [2018-09-14 17:23:29,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:23:29,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:23:29,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:23:29,797 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:23:29,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:23:14" (1/3) ... [2018-09-14 17:23:29,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab19a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:23:29, skipping insertion in model container [2018-09-14 17:23:29,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:16" (2/3) ... [2018-09-14 17:23:29,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab19a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:23:29, skipping insertion in model container [2018-09-14 17:23:29,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:23:29" (3/3) ... [2018-09-14 17:23:29,801 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label32_true-unreach-call.c [2018-09-14 17:23:29,809 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:23:29,818 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:23:29,880 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:23:29,881 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:23:29,881 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:23:29,881 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:23:29,881 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:23:29,881 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:23:29,882 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:23:29,882 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:23:29,882 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:23:29,929 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-14 17:23:29,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-14 17:23:29,947 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:29,948 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:29,949 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:29,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1790779988, now seen corresponding path program 1 times [2018-09-14 17:23:29,958 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:30,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:30,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:30,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:30,014 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:30,572 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 17:23:30,578 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:23:30,578 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:23:30,579 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:30,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:23:30,604 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:23:30,605 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:23:30,608 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-09-14 17:23:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:42,919 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-09-14 17:23:42,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:23:42,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-09-14 17:23:42,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:42,974 INFO L225 Difference]: With dead ends: 3234 [2018-09-14 17:23:42,975 INFO L226 Difference]: Without dead ends: 2388 [2018-09-14 17:23:42,992 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:23:43,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-09-14 17:23:43,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-09-14 17:23:43,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-09-14 17:23:43,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4022 transitions. [2018-09-14 17:23:43,181 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4022 transitions. Word has length 50 [2018-09-14 17:23:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:43,182 INFO L480 AbstractCegarLoop]: Abstraction has 2388 states and 4022 transitions. [2018-09-14 17:23:43,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:23:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4022 transitions. [2018-09-14 17:23:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-14 17:23:43,196 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:43,197 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:43,197 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:43,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1628117594, now seen corresponding path program 1 times [2018-09-14 17:23:43,199 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:43,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:43,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:43,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:43,201 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:23:43,962 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:23:43,962 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:23:43,963 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:43,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:23:43,965 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:23:43,965 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:23:43,966 INFO L87 Difference]: Start difference. First operand 2388 states and 4022 transitions. Second operand 6 states. [2018-09-14 17:23:57,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:57,864 INFO L93 Difference]: Finished difference Result 9453 states and 16261 transitions. [2018-09-14 17:23:57,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:23:57,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-09-14 17:23:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:57,916 INFO L225 Difference]: With dead ends: 9453 [2018-09-14 17:23:57,916 INFO L226 Difference]: Without dead ends: 7071 [2018-09-14 17:23:57,930 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:23:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2018-09-14 17:23:58,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7023. [2018-09-14 17:23:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2018-09-14 17:23:58,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 10536 transitions. [2018-09-14 17:23:58,141 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 10536 transitions. Word has length 150 [2018-09-14 17:23:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:58,142 INFO L480 AbstractCegarLoop]: Abstraction has 7023 states and 10536 transitions. [2018-09-14 17:23:58,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:23:58,142 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 10536 transitions. [2018-09-14 17:23:58,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-09-14 17:23:58,160 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:58,160 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:58,165 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:58,165 INFO L82 PathProgramCache]: Analyzing trace with hash 395335138, now seen corresponding path program 1 times [2018-09-14 17:23:58,166 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:58,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:58,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:58,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:58,167 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:58,470 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:23:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 17:23:58,549 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:58,550 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 17:23:58,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:58,562 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:58,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:23:58,768 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:23:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:23:59,018 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:23:59,019 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-09-14 17:23:59,019 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:59,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:23:59,020 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:23:59,020 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:23:59,021 INFO L87 Difference]: Start difference. First operand 7023 states and 10536 transitions. Second operand 3 states. [2018-09-14 17:24:05,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:05,366 INFO L93 Difference]: Finished difference Result 20924 states and 32049 transitions. [2018-09-14 17:24:05,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:24:05,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2018-09-14 17:24:05,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:05,443 INFO L225 Difference]: With dead ends: 20924 [2018-09-14 17:24:05,443 INFO L226 Difference]: Without dead ends: 13907 [2018-09-14 17:24:05,473 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 398 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:24:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13907 states. [2018-09-14 17:24:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13907 to 13907. [2018-09-14 17:24:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13907 states. [2018-09-14 17:24:05,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13907 states to 13907 states and 20684 transitions. [2018-09-14 17:24:05,812 INFO L78 Accepts]: Start accepts. Automaton has 13907 states and 20684 transitions. Word has length 200 [2018-09-14 17:24:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:05,813 INFO L480 AbstractCegarLoop]: Abstraction has 13907 states and 20684 transitions. [2018-09-14 17:24:05,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:24:05,813 INFO L276 IsEmpty]: Start isEmpty. Operand 13907 states and 20684 transitions. [2018-09-14 17:24:05,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-14 17:24:05,820 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:05,820 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:05,820 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:05,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1042240652, now seen corresponding path program 1 times [2018-09-14 17:24:05,821 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:05,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:05,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:05,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:05,822 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:06,210 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 86 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:24:06,211 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:24:06,211 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:24:06,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:06,224 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:24:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:06,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:24:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-14 17:24:06,599 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:24:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 86 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:24:07,355 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:24:07,356 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-14 17:24:07,356 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:07,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:24:07,357 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:24:07,357 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:24:07,358 INFO L87 Difference]: Start difference. First operand 13907 states and 20684 transitions. Second operand 5 states. [2018-09-14 17:24:16,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:16,538 INFO L93 Difference]: Finished difference Result 42037 states and 65004 transitions. [2018-09-14 17:24:16,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:24:16,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2018-09-14 17:24:16,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:16,684 INFO L225 Difference]: With dead ends: 42037 [2018-09-14 17:24:16,685 INFO L226 Difference]: Without dead ends: 28136 [2018-09-14 17:24:16,734 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:24:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28136 states. [2018-09-14 17:24:17,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28136 to 28015. [2018-09-14 17:24:17,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28015 states. [2018-09-14 17:24:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28015 states to 28015 states and 40340 transitions. [2018-09-14 17:24:17,416 INFO L78 Accepts]: Start accepts. Automaton has 28015 states and 40340 transitions. Word has length 204 [2018-09-14 17:24:17,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:17,416 INFO L480 AbstractCegarLoop]: Abstraction has 28015 states and 40340 transitions. [2018-09-14 17:24:17,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:24:17,417 INFO L276 IsEmpty]: Start isEmpty. Operand 28015 states and 40340 transitions. [2018-09-14 17:24:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-09-14 17:24:17,425 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:17,426 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:17,426 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:17,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1565382309, now seen corresponding path program 1 times [2018-09-14 17:24:17,428 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:17,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:17,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:17,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:17,430 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:17,796 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:24:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:24:18,231 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:24:18,231 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:24:18,231 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:18,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:24:18,232 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:24:18,232 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:24:18,233 INFO L87 Difference]: Start difference. First operand 28015 states and 40340 transitions. Second operand 6 states. [2018-09-14 17:24:28,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:28,387 INFO L93 Difference]: Finished difference Result 66001 states and 99752 transitions. [2018-09-14 17:24:28,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:24:28,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2018-09-14 17:24:28,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:28,543 INFO L225 Difference]: With dead ends: 66001 [2018-09-14 17:24:28,543 INFO L226 Difference]: Without dead ends: 37992 [2018-09-14 17:24:28,606 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:24:28,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37992 states. [2018-09-14 17:24:29,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37992 to 37867. [2018-09-14 17:24:29,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37867 states. [2018-09-14 17:24:29,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37867 states to 37867 states and 54201 transitions. [2018-09-14 17:24:29,510 INFO L78 Accepts]: Start accepts. Automaton has 37867 states and 54201 transitions. Word has length 213 [2018-09-14 17:24:29,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:29,510 INFO L480 AbstractCegarLoop]: Abstraction has 37867 states and 54201 transitions. [2018-09-14 17:24:29,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:24:29,511 INFO L276 IsEmpty]: Start isEmpty. Operand 37867 states and 54201 transitions. [2018-09-14 17:24:29,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-09-14 17:24:29,521 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:29,522 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:29,522 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:29,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1422890067, now seen corresponding path program 1 times [2018-09-14 17:24:29,523 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:29,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:29,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:29,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:29,524 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:29,821 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:24:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 86 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:24:30,257 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:24:30,257 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 17:24:30,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:30,279 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:24:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:30,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:24:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-14 17:24:30,820 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:24:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 86 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:24:31,805 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:24:31,805 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-14 17:24:31,805 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:31,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:24:31,806 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:24:31,806 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:24:31,806 INFO L87 Difference]: Start difference. First operand 37867 states and 54201 transitions. Second operand 5 states. [2018-09-14 17:24:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:41,703 INFO L93 Difference]: Finished difference Result 95507 states and 143708 transitions. [2018-09-14 17:24:41,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:24:41,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2018-09-14 17:24:41,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:41,954 INFO L225 Difference]: With dead ends: 95507 [2018-09-14 17:24:41,955 INFO L226 Difference]: Without dead ends: 57646 [2018-09-14 17:24:42,062 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 493 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:24:42,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57646 states. [2018-09-14 17:24:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57646 to 57545. [2018-09-14 17:24:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57545 states. [2018-09-14 17:24:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57545 states to 57545 states and 83388 transitions. [2018-09-14 17:24:43,583 INFO L78 Accepts]: Start accepts. Automaton has 57545 states and 83388 transitions. Word has length 249 [2018-09-14 17:24:43,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:43,583 INFO L480 AbstractCegarLoop]: Abstraction has 57545 states and 83388 transitions. [2018-09-14 17:24:43,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:24:43,584 INFO L276 IsEmpty]: Start isEmpty. Operand 57545 states and 83388 transitions. [2018-09-14 17:24:43,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-14 17:24:43,599 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:43,599 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:43,599 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:43,600 INFO L82 PathProgramCache]: Analyzing trace with hash 385753597, now seen corresponding path program 1 times [2018-09-14 17:24:43,600 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:43,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:43,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:43,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:43,602 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:24:43,912 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:24:43,913 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:24:43,913 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:43,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:24:43,914 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:24:43,914 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:24:43,914 INFO L87 Difference]: Start difference. First operand 57545 states and 83388 transitions. Second operand 4 states. [2018-09-14 17:24:55,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:55,609 INFO L93 Difference]: Finished difference Result 112432 states and 164995 transitions. [2018-09-14 17:24:55,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:24:55,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 273 [2018-09-14 17:24:55,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:55,781 INFO L225 Difference]: With dead ends: 112432 [2018-09-14 17:24:55,781 INFO L226 Difference]: Without dead ends: 54893 [2018-09-14 17:24:55,926 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:24:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54893 states. [2018-09-14 17:24:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54893 to 54882. [2018-09-14 17:24:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54882 states. [2018-09-14 17:24:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54882 states to 54882 states and 69192 transitions. [2018-09-14 17:24:56,822 INFO L78 Accepts]: Start accepts. Automaton has 54882 states and 69192 transitions. Word has length 273 [2018-09-14 17:24:56,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:56,822 INFO L480 AbstractCegarLoop]: Abstraction has 54882 states and 69192 transitions. [2018-09-14 17:24:56,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:24:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand 54882 states and 69192 transitions. [2018-09-14 17:24:56,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-09-14 17:24:56,855 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:56,856 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:56,856 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:56,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1191555411, now seen corresponding path program 1 times [2018-09-14 17:24:56,857 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:56,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:56,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:56,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:56,858 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:57,251 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-09-14 17:24:57,251 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:24:57,252 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:24:57,252 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:57,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:24:57,253 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:24:57,253 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:24:57,253 INFO L87 Difference]: Start difference. First operand 54882 states and 69192 transitions. Second operand 4 states. [2018-09-14 17:25:06,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:25:06,542 INFO L93 Difference]: Finished difference Result 202447 states and 268576 transitions. [2018-09-14 17:25:06,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:25:06,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 377 [2018-09-14 17:25:06,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:25:07,079 INFO L225 Difference]: With dead ends: 202447 [2018-09-14 17:25:07,079 INFO L226 Difference]: Without dead ends: 147571 [2018-09-14 17:25:07,241 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:25:07,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147571 states. [2018-09-14 17:25:10,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147571 to 147566. [2018-09-14 17:25:10,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147566 states. [2018-09-14 17:25:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147566 states to 147566 states and 189522 transitions. [2018-09-14 17:25:10,770 INFO L78 Accepts]: Start accepts. Automaton has 147566 states and 189522 transitions. Word has length 377 [2018-09-14 17:25:10,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:10,771 INFO L480 AbstractCegarLoop]: Abstraction has 147566 states and 189522 transitions. [2018-09-14 17:25:10,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:25:10,771 INFO L276 IsEmpty]: Start isEmpty. Operand 147566 states and 189522 transitions. [2018-09-14 17:25:10,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2018-09-14 17:25:10,927 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:10,928 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:25:10,928 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:10,928 INFO L82 PathProgramCache]: Analyzing trace with hash -292938371, now seen corresponding path program 1 times [2018-09-14 17:25:10,929 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:10,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:10,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:10,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:10,930 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:11,686 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 208 proven. 124 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:25:11,686 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:11,687 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:25:11,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:11,702 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:11,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-14 17:25:12,181 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 208 proven. 124 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:25:12,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:12,467 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:25:12,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:12,486 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:12,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-14 17:25:13,918 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 208 proven. 124 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:25:14,350 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:25:14,350 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:25:14,351 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:25:14,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:25:14,353 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:25:14,354 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:25:14,354 INFO L87 Difference]: Start difference. First operand 147566 states and 189522 transitions. Second operand 9 states. [2018-09-14 17:25:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:25:33,014 INFO L93 Difference]: Finished difference Result 337326 states and 478248 transitions. [2018-09-14 17:25:33,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 17:25:33,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 588 [2018-09-14 17:25:33,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:25:33,846 INFO L225 Difference]: With dead ends: 337326 [2018-09-14 17:25:33,847 INFO L226 Difference]: Without dead ends: 163242 [2018-09-14 17:25:34,359 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2378 GetRequests, 2353 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:25:34,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163242 states. [2018-09-14 17:25:38,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163242 to 153460. [2018-09-14 17:25:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153460 states. [2018-09-14 17:25:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153460 states to 153460 states and 199681 transitions. [2018-09-14 17:25:38,625 INFO L78 Accepts]: Start accepts. Automaton has 153460 states and 199681 transitions. Word has length 588 [2018-09-14 17:25:38,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:38,626 INFO L480 AbstractCegarLoop]: Abstraction has 153460 states and 199681 transitions. [2018-09-14 17:25:38,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:25:38,626 INFO L276 IsEmpty]: Start isEmpty. Operand 153460 states and 199681 transitions. [2018-09-14 17:25:38,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2018-09-14 17:25:38,797 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:38,797 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:25:38,798 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:38,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1601870478, now seen corresponding path program 1 times [2018-09-14 17:25:38,798 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:38,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:38,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:38,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:38,800 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 396 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-14 17:25:40,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:40,684 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:25:40,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:40,692 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:40,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 396 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-14 17:25:41,197 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 396 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-14 17:25:42,514 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:42,514 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:25:42,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:42,529 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:42,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 396 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-14 17:25:43,144 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 396 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-14 17:25:48,028 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:25:48,028 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-14 17:25:48,029 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:25:48,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 17:25:48,030 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 17:25:48,030 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:25:48,031 INFO L87 Difference]: Start difference. First operand 153460 states and 199681 transitions. Second operand 7 states. [2018-09-14 17:26:17,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:26:17,529 INFO L93 Difference]: Finished difference Result 406852 states and 646195 transitions. [2018-09-14 17:26:17,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:26:17,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 653 [2018-09-14 17:26:17,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:26:18,643 INFO L225 Difference]: With dead ends: 406852 [2018-09-14 17:26:18,644 INFO L226 Difference]: Without dead ends: 253428 [2018-09-14 17:26:19,092 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2630 GetRequests, 2611 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:26:19,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253428 states. [2018-09-14 17:26:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253428 to 247887. [2018-09-14 17:26:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247887 states. [2018-09-14 17:26:25,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247887 states to 247887 states and 333056 transitions. [2018-09-14 17:26:25,781 INFO L78 Accepts]: Start accepts. Automaton has 247887 states and 333056 transitions. Word has length 653 [2018-09-14 17:26:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:26:25,783 INFO L480 AbstractCegarLoop]: Abstraction has 247887 states and 333056 transitions. [2018-09-14 17:26:25,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 17:26:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 247887 states and 333056 transitions. [2018-09-14 17:26:26,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-09-14 17:26:26,116 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:26:26,116 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:26:26,117 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:26:26,117 INFO L82 PathProgramCache]: Analyzing trace with hash -350375746, now seen corresponding path program 1 times [2018-09-14 17:26:26,117 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:26:26,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:26,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:26,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:26,118 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:26:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:27,988 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 257 proven. 124 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-09-14 17:26:27,989 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:26:27,989 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:26:27,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:27,998 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:26:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:28,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:26:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 482 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-14 17:26:28,805 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:26:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 257 proven. 124 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-09-14 17:26:29,249 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:26:29,249 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:26:29,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:29,266 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:26:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:29,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:26:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 482 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-14 17:26:30,654 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:26:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 257 proven. 124 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-09-14 17:26:31,026 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:26:31,027 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:26:31,027 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:26:31,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:26:31,029 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:26:31,029 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:26:31,030 INFO L87 Difference]: Start difference. First operand 247887 states and 333056 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 17:26:55,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-14 17:26:55,105 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:26:55,110 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:26:55,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:26:55 BoogieIcfgContainer [2018-09-14 17:26:55,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:26:55,112 INFO L168 Benchmark]: Toolchain (without parser) took 220641.30 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -775.5 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2018-09-14 17:26:55,113 INFO L168 Benchmark]: CDTParser took 0.20 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 17:26:55,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2414.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:26:55,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 264.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:26:55,115 INFO L168 Benchmark]: Boogie Preprocessor took 866.99 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 913.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:26:55,116 INFO L168 Benchmark]: RCFGBuilder took 11767.54 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 653.4 MB). Peak memory consumption was 653.4 MB. Max. memory is 7.1 GB. [2018-09-14 17:26:55,117 INFO L168 Benchmark]: TraceAbstraction took 205317.40 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -529.8 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-14 17:26:55,125 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2414.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 264.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 866.99 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 913.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11767.54 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 653.4 MB). Peak memory consumption was 653.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205317.40 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -529.8 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while BasicCegarLoop was constructing difference of abstraction (247887states) and FLOYD_HOARE automaton (currently 20 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (602165 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 205.2s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 159.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3112 SDtfs, 37948 SDslu, 2112 SDs, 0 SdLazy, 69294 SolverSat, 17080 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 117.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9043 GetRequests, 8920 SyntacticMatches, 24 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247887occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 19.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 15734 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 20.0s InterpolantComputationTime, 8075 NumberOfCodeBlocks, 8075 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 12503 ConstructedInterpolants, 0 QuantifiedInterpolants, 15103874 SizeOfPredicates, 7 NumberOfNonLiveVariables, 6772 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 7718/8795 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label32_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-26-55-148.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label32_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-26-55-148.csv Completed graceful shutdown