java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:21:13,383 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:21:13,385 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:21:13,400 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:21:13,400 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:21:13,401 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:21:13,402 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:21:13,404 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:21:13,405 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:21:13,406 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:21:13,407 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:21:13,407 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:21:13,408 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:21:13,409 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:21:13,410 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:21:13,411 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:21:13,412 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:21:13,414 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:21:13,416 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:21:13,417 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:21:13,418 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:21:13,420 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:21:13,422 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:21:13,422 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:21:13,423 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:21:13,423 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:21:13,424 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:21:13,425 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:21:13,426 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:21:13,427 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:21:13,427 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:21:13,428 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 15:21:13,428 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 15:21:13,429 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 15:21:13,430 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 15:21:13,430 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 15:21:13,431 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 15:21:13,447 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:21:13,447 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:21:13,448 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:21:13,448 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:21:13,448 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:21:13,448 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:21:13,449 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:21:13,449 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:21:13,449 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:21:13,449 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:21:13,449 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:21:13,450 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:21:13,450 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:21:13,450 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:21:13,451 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:21:13,451 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:21:13,451 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:21:13,451 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:21:13,451 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:21:13,452 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:21:13,452 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:21:13,452 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:21:13,452 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:21:13,452 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:21:13,452 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:21:13,453 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:21:13,453 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:21:13,453 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:21:13,453 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:21:13,453 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:21:13,454 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:21:13,454 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:21:13,454 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:21:13,454 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:21:13,519 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:21:13,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:21:13,538 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:21:13,540 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:21:13,540 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:21:13,541 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label38_true-unreach-call.c [2018-10-27 15:21:13,605 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef8f4700c/1bbab7d036054974ab7ac08fad2eb595/FLAG0ba2a006f [2018-10-27 15:21:14,517 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:21:14,518 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label38_true-unreach-call.c [2018-10-27 15:21:14,569 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef8f4700c/1bbab7d036054974ab7ac08fad2eb595/FLAG0ba2a006f [2018-10-27 15:21:14,585 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef8f4700c/1bbab7d036054974ab7ac08fad2eb595 [2018-10-27 15:21:14,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:21:14,599 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:21:14,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:21:14,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:21:14,605 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:21:14,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:21:14" (1/1) ... [2018-10-27 15:21:14,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:14, skipping insertion in model container [2018-10-27 15:21:14,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:21:14" (1/1) ... [2018-10-27 15:21:14,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:21:14,863 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:21:16,750 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:21:16,755 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:21:18,212 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:21:18,269 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:21:18,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:18 WrapperNode [2018-10-27 15:21:18,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:21:18,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:21:18,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:21:18,271 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:21:18,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:18" (1/1) ... [2018-10-27 15:21:18,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:18" (1/1) ... [2018-10-27 15:21:19,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:21:19,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:21:19,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:21:19,055 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:21:19,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:18" (1/1) ... [2018-10-27 15:21:19,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:18" (1/1) ... [2018-10-27 15:21:19,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:18" (1/1) ... [2018-10-27 15:21:19,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:18" (1/1) ... [2018-10-27 15:21:19,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:18" (1/1) ... [2018-10-27 15:21:19,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:18" (1/1) ... [2018-10-27 15:21:19,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:18" (1/1) ... [2018-10-27 15:21:19,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:21:19,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:21:19,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:21:19,632 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:21:19,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 15:21:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:21:19,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:21:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-27 15:21:19,706 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-27 15:21:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-27 15:21:19,706 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-27 15:21:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 15:21:19,707 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 15:21:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 15:21:19,707 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 15:21:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 15:21:19,707 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 15:21:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 15:21:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 15:21:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:21:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:21:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:21:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:21:39,490 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:21:39,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:21:39 BoogieIcfgContainer [2018-10-27 15:21:39,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:21:39,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:21:39,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:21:39,495 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:21:39,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:21:14" (1/3) ... [2018-10-27 15:21:39,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ce7c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:21:39, skipping insertion in model container [2018-10-27 15:21:39,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:21:18" (2/3) ... [2018-10-27 15:21:39,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ce7c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:21:39, skipping insertion in model container [2018-10-27 15:21:39,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:21:39" (3/3) ... [2018-10-27 15:21:39,499 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label38_true-unreach-call.c [2018-10-27 15:21:39,509 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:21:39,520 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:21:39,540 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:21:39,605 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:21:39,605 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:21:39,605 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:21:39,605 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:21:39,605 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:21:39,605 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:21:39,606 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:21:39,606 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:21:39,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-27 15:21:39,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-27 15:21:39,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:21:39,676 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:21:39,678 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:21:39,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:21:39,684 INFO L82 PathProgramCache]: Analyzing trace with hash -217079404, now seen corresponding path program 1 times [2018-10-27 15:21:39,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:21:39,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:21:39,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:21:39,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:21:39,743 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:21:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:21:40,201 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:21:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:21:40,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:21:40,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 15:21:40,297 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:21:40,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:21:40,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:21:40,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:21:40,327 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-27 15:21:55,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:21:55,718 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-10-27 15:21:55,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:21:55,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-10-27 15:21:55,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:21:55,768 INFO L225 Difference]: With dead ends: 4999 [2018-10-27 15:21:55,768 INFO L226 Difference]: Without dead ends: 3219 [2018-10-27 15:21:55,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:21:55,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-10-27 15:21:55,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-10-27 15:21:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-27 15:21:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-10-27 15:21:55,991 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 66 [2018-10-27 15:21:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:21:55,991 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-10-27 15:21:55,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:21:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-10-27 15:21:56,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-27 15:21:56,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:21:56,000 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:21:56,001 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:21:56,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:21:56,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1232037643, now seen corresponding path program 1 times [2018-10-27 15:21:56,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:21:56,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:21:56,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:21:56,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:21:56,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:21:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:21:56,330 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:21:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:21:56,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:21:56,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:21:56,724 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:21:56,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:21:56,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:21:56,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:21:56,728 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-10-27 15:22:25,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:22:25,630 INFO L93 Difference]: Finished difference Result 9331 states and 16910 transitions. [2018-10-27 15:22:25,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:22:25,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-10-27 15:22:25,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:22:25,671 INFO L225 Difference]: With dead ends: 9331 [2018-10-27 15:22:25,671 INFO L226 Difference]: Without dead ends: 6122 [2018-10-27 15:22:25,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:22:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2018-10-27 15:22:25,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6084. [2018-10-27 15:22:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2018-10-27 15:22:25,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9616 transitions. [2018-10-27 15:22:25,857 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9616 transitions. Word has length 138 [2018-10-27 15:22:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:22:25,858 INFO L481 AbstractCegarLoop]: Abstraction has 6084 states and 9616 transitions. [2018-10-27 15:22:25,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:22:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9616 transitions. [2018-10-27 15:22:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-27 15:22:25,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:22:25,863 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:22:25,863 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:22:25,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:22:25,863 INFO L82 PathProgramCache]: Analyzing trace with hash -226672055, now seen corresponding path program 1 times [2018-10-27 15:22:25,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:22:25,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:22:25,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:22:25,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:22:25,865 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:22:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:22:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:22:26,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:22:26,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:22:26,170 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:22:26,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:22:26,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:22:26,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:22:26,171 INFO L87 Difference]: Start difference. First operand 6084 states and 9616 transitions. Second operand 6 states. [2018-10-27 15:23:20,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:23:20,960 INFO L93 Difference]: Finished difference Result 24241 states and 39700 transitions. [2018-10-27 15:23:20,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 15:23:20,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-10-27 15:23:20,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:23:21,077 INFO L225 Difference]: With dead ends: 24241 [2018-10-27 15:23:21,078 INFO L226 Difference]: Without dead ends: 18163 [2018-10-27 15:23:21,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 15:23:21,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18163 states. [2018-10-27 15:23:21,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18163 to 18089. [2018-10-27 15:23:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18089 states. [2018-10-27 15:23:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18089 states to 18089 states and 25630 transitions. [2018-10-27 15:23:21,629 INFO L78 Accepts]: Start accepts. Automaton has 18089 states and 25630 transitions. Word has length 156 [2018-10-27 15:23:21,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:23:21,631 INFO L481 AbstractCegarLoop]: Abstraction has 18089 states and 25630 transitions. [2018-10-27 15:23:21,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:23:21,631 INFO L276 IsEmpty]: Start isEmpty. Operand 18089 states and 25630 transitions. [2018-10-27 15:23:21,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-27 15:23:21,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:23:21,642 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 15:23:21,642 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:23:21,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:23:21,643 INFO L82 PathProgramCache]: Analyzing trace with hash -294519992, now seen corresponding path program 1 times [2018-10-27 15:23:21,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:23:21,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:23:21,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:23:21,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:23:21,644 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:23:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:23:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:23:22,057 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:23:22,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 15:23:22,057 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:23:22,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 15:23:22,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 15:23:22,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 15:23:22,058 INFO L87 Difference]: Start difference. First operand 18089 states and 25630 transitions. Second operand 5 states. [2018-10-27 15:23:46,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:23:46,845 INFO L93 Difference]: Finished difference Result 56344 states and 85034 transitions. [2018-10-27 15:23:46,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 15:23:46,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2018-10-27 15:23:46,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:23:47,021 INFO L225 Difference]: With dead ends: 56344 [2018-10-27 15:23:47,022 INFO L226 Difference]: Without dead ends: 38261 [2018-10-27 15:23:47,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 15:23:47,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38261 states. [2018-10-27 15:23:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38261 to 37187. [2018-10-27 15:23:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37187 states. [2018-10-27 15:23:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37187 states to 37187 states and 50452 transitions. [2018-10-27 15:23:48,112 INFO L78 Accepts]: Start accepts. Automaton has 37187 states and 50452 transitions. Word has length 201 [2018-10-27 15:23:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:23:48,113 INFO L481 AbstractCegarLoop]: Abstraction has 37187 states and 50452 transitions. [2018-10-27 15:23:48,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 15:23:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 37187 states and 50452 transitions. [2018-10-27 15:23:48,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-27 15:23:48,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:23:48,124 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:23:48,124 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:23:48,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:23:48,125 INFO L82 PathProgramCache]: Analyzing trace with hash 548752070, now seen corresponding path program 1 times [2018-10-27 15:23:48,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:23:48,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:23:48,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:23:48,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:23:48,126 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:23:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:23:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 118 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 15:23:48,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:23:48,648 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:23:48,650 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-10-27 15:23:48,653 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5650], [5654], [5656], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-27 15:23:48,727 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:23:48,728 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:23:49,176 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 15:23:49,178 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 15:23:49,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:23:49,213 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 15:23:49,828 INFO L227 lantSequenceWeakener]: Weakened 212 states. On average, predicates are now at 75.86% of their original sizes. [2018-10-27 15:23:49,829 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 15:23:50,170 INFO L415 sIntCurrentIteration]: We unified 220 AI predicates to 220 [2018-10-27 15:23:50,171 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 15:23:50,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:23:50,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 15:23:50,175 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:23:50,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 15:23:50,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 15:23:50,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 15:23:50,177 INFO L87 Difference]: Start difference. First operand 37187 states and 50452 transitions. Second operand 7 states. [2018-10-27 15:23:54,430 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown