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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:57:42,656 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:57:42,660 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:57:42,680 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:57:42,680 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:57:42,682 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:57:42,683 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:57:42,685 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:57:42,686 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:57:42,687 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:57:42,688 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:57:42,688 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:57:42,689 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:57:42,690 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:57:42,692 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:57:42,692 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:57:42,693 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:57:42,695 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:57:42,697 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:57:42,699 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:57:42,700 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:57:42,701 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:57:42,704 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:57:42,704 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:57:42,705 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:57:42,705 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:57:42,706 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:57:42,707 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:57:42,708 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:57:42,710 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:57:42,710 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:57:42,711 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:57:42,711 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:57:42,711 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:57:42,712 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:57:42,713 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:57:42,713 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:57:42,730 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:57:42,730 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:57:42,731 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:57:42,731 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:57:42,731 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:57:42,732 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:57:42,732 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:57:42,732 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:57:42,732 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:57:42,732 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:57:42,733 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:57:42,733 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:57:42,733 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:57:42,733 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:57:42,734 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:57:42,734 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:57:42,734 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:57:42,735 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:57:42,735 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:57:42,735 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:57:42,735 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:57:42,735 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:57:42,736 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:57:42,736 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:57:42,736 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:57:42,736 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:57:42,736 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:57:42,737 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:57:42,737 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:57:42,737 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:57:42,737 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:57:42,737 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:57:42,738 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:57:42,738 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:57:42,738 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:57:42,738 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:57:42,805 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:57:42,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:57:42,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:57:42,828 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:57:42,828 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:57:42,829 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label38_true-unreach-call.c [2018-10-27 07:57:42,909 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6ba48a35b/85d8b962dc7f49fcae5bde32ca8461cd/FLAG8a7f20a3b [2018-10-27 07:57:43,754 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:57:43,755 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label38_true-unreach-call.c [2018-10-27 07:57:43,800 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6ba48a35b/85d8b962dc7f49fcae5bde32ca8461cd/FLAG8a7f20a3b [2018-10-27 07:57:43,821 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6ba48a35b/85d8b962dc7f49fcae5bde32ca8461cd [2018-10-27 07:57:43,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:57:43,837 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:57:43,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:57:43,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:57:43,852 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:57:43,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:57:43" (1/1) ... [2018-10-27 07:57:43,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b295a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:43, skipping insertion in model container [2018-10-27 07:57:43,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:57:43" (1/1) ... [2018-10-27 07:57:43,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:57:44,051 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:57:45,574 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:57:45,579 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:57:46,492 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:57:46,535 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:57:46,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:46 WrapperNode [2018-10-27 07:57:46,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:57:46,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:57:46,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:57:46,538 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:57:46,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:46" (1/1) ... [2018-10-27 07:57:46,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:46" (1/1) ... [2018-10-27 07:57:47,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:57:47,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:57:47,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:57:47,157 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:57:47,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:46" (1/1) ... [2018-10-27 07:57:47,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:46" (1/1) ... [2018-10-27 07:57:47,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:46" (1/1) ... [2018-10-27 07:57:47,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:46" (1/1) ... [2018-10-27 07:57:47,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:46" (1/1) ... [2018-10-27 07:57:47,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:46" (1/1) ... [2018-10-27 07:57:47,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:46" (1/1) ... [2018-10-27 07:57:47,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:57:47,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:57:47,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:57:47,445 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:57:47,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:46" (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 07:57:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:57:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:57:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 07:57:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 07:57:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 07:57:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 07:57:47,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 07:57:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 07:57:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:57:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:57:47,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:57:47,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:57:47,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:57:47,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:57:59,078 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:57:59,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:57:59 BoogieIcfgContainer [2018-10-27 07:57:59,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:57:59,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:57:59,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:57:59,088 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:57:59,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:57:43" (1/3) ... [2018-10-27 07:57:59,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636381da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:57:59, skipping insertion in model container [2018-10-27 07:57:59,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:57:46" (2/3) ... [2018-10-27 07:57:59,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636381da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:57:59, skipping insertion in model container [2018-10-27 07:57:59,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:57:59" (3/3) ... [2018-10-27 07:57:59,092 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label38_true-unreach-call.c [2018-10-27 07:57:59,103 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:57:59,117 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:57:59,133 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:57:59,183 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:57:59,183 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:57:59,183 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:57:59,183 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:57:59,183 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:57:59,184 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:57:59,184 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:57:59,184 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:57:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 07:57:59,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-27 07:57:59,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:57:59,239 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 07:57:59,241 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:57:59,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:57:59,248 INFO L82 PathProgramCache]: Analyzing trace with hash 437838356, now seen corresponding path program 1 times [2018-10-27 07:57:59,250 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:57:59,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:57:59,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:57:59,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:57:59,300 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:57:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:57:59,740 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:57:59,853 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 07:57:59,856 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:57:59,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:57:59,857 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:57:59,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:57:59,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:57:59,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:57:59,887 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-27 07:58:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:58:11,606 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-10-27 07:58:11,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:58:11,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-10-27 07:58:11,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:58:11,649 INFO L225 Difference]: With dead ends: 3087 [2018-10-27 07:58:11,650 INFO L226 Difference]: Without dead ends: 1965 [2018-10-27 07:58:11,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 07:58:11,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-10-27 07:58:11,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-10-27 07:58:11,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-27 07:58:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-10-27 07:58:11,836 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 66 [2018-10-27 07:58:11,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:58:11,837 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-10-27 07:58:11,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:58:11,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-10-27 07:58:11,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-27 07:58:11,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:58:11,847 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] [2018-10-27 07:58:11,848 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:58:11,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:58:11,848 INFO L82 PathProgramCache]: Analyzing trace with hash 124498118, now seen corresponding path program 1 times [2018-10-27 07:58:11,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:58:11,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:58:11,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:58:11,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:58:11,850 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:58:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:58:12,226 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 07:58:12,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:58:12,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:58:12,227 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:58:12,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:58:12,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:58:12,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:58:12,231 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-10-27 07:58:25,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:58:25,500 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-10-27 07:58:25,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:58:25,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-27 07:58:25,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:58:25,538 INFO L225 Difference]: With dead ends: 5634 [2018-10-27 07:58:25,538 INFO L226 Difference]: Without dead ends: 3681 [2018-10-27 07:58:25,547 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:58:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-10-27 07:58:25,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-10-27 07:58:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-10-27 07:58:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-10-27 07:58:25,665 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 143 [2018-10-27 07:58:25,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:58:25,666 INFO L481 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-10-27 07:58:25,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:58:25,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-10-27 07:58:25,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-27 07:58:25,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:58:25,673 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] [2018-10-27 07:58:25,673 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:58:25,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:58:25,674 INFO L82 PathProgramCache]: Analyzing trace with hash -738024772, now seen corresponding path program 1 times [2018-10-27 07:58:25,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:58:25,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:58:25,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:58:25,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:58:25,676 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:58:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:58:25,981 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 07:58:25,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:58:25,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:58:25,982 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:58:25,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:58:25,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:58:25,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:58:25,983 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-10-27 07:58:37,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:58:37,392 INFO L93 Difference]: Finished difference Result 12385 states and 20601 transitions. [2018-10-27 07:58:37,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:58:37,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-27 07:58:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:58:37,449 INFO L225 Difference]: With dead ends: 12385 [2018-10-27 07:58:37,450 INFO L226 Difference]: Without dead ends: 8741 [2018-10-27 07:58:37,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:58:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2018-10-27 07:58:37,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8684. [2018-10-27 07:58:37,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8684 states. [2018-10-27 07:58:37,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 12864 transitions. [2018-10-27 07:58:37,724 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 12864 transitions. Word has length 162 [2018-10-27 07:58:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:58:37,725 INFO L481 AbstractCegarLoop]: Abstraction has 8684 states and 12864 transitions. [2018-10-27 07:58:37,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:58:37,725 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 12864 transitions. [2018-10-27 07:58:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-27 07:58:37,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:58:37,733 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] [2018-10-27 07:58:37,734 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:58:37,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:58:37,734 INFO L82 PathProgramCache]: Analyzing trace with hash -645382492, now seen corresponding path program 1 times [2018-10-27 07:58:37,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:58:37,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:58:37,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:58:37,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:58:37,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:58:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:58:38,111 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:58:38,211 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 07:58:38,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:58:38,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:58:38,212 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:58:38,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:58:38,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:58:38,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:58:38,213 INFO L87 Difference]: Start difference. First operand 8684 states and 12864 transitions. Second operand 6 states. [2018-10-27 07:58:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:58:50,083 INFO L93 Difference]: Finished difference Result 22909 states and 34919 transitions. [2018-10-27 07:58:50,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:58:50,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-10-27 07:58:50,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:58:50,161 INFO L225 Difference]: With dead ends: 22909 [2018-10-27 07:58:50,162 INFO L226 Difference]: Without dead ends: 14231 [2018-10-27 07:58:50,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:58:50,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2018-10-27 07:58:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 14057. [2018-10-27 07:58:50,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2018-10-27 07:58:50,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 19960 transitions. [2018-10-27 07:58:50,563 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 19960 transitions. Word has length 174 [2018-10-27 07:58:50,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:58:50,563 INFO L481 AbstractCegarLoop]: Abstraction has 14057 states and 19960 transitions. [2018-10-27 07:58:50,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:58:50,564 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 19960 transitions. [2018-10-27 07:58:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-27 07:58:50,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:58:50,574 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, 1, 1, 1, 1, 1, 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 07:58:50,574 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:58:50,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:58:50,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1546539748, now seen corresponding path program 1 times [2018-10-27 07:58:50,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:58:50,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:58:50,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:58:50,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:58:50,576 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:58:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:58:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 118 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 07:58:50,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:58:50,922 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:58:50,923 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-10-27 07:58:50,925 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3055], [3057], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3225], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 07:58:50,978 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:58:50,979 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:58:51,512 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:58:51,514 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 07:58:51,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:58:51,558 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:58:52,279 INFO L227 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 71.63% of their original sizes. [2018-10-27 07:58:52,279 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:58:52,540 INFO L415 sIntCurrentIteration]: We unified 228 AI predicates to 228 [2018-10-27 07:58:52,540 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:58:52,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:58:52,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-27 07:58:52,542 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:58:52,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:58:52,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:58:52,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:58:52,543 INFO L87 Difference]: Start difference. First operand 14057 states and 19960 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown