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/Problem19_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:53:26,721 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:53:26,724 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:53:26,737 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:53:26,737 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:53:26,738 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:53:26,740 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:53:26,743 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:53:26,745 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:53:26,746 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:53:26,753 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:53:26,754 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:53:26,756 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:53:26,758 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:53:26,761 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:53:26,762 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:53:26,763 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:53:26,765 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:53:26,770 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:53:26,775 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:53:26,776 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:53:26,779 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:53:26,781 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:53:26,781 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:53:26,781 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:53:26,782 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:53:26,783 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:53:26,784 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:53:26,785 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:53:26,786 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:53:26,786 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:53:26,787 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:53:26,787 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:53:26,787 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:53:26,788 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:53:26,789 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:53:26,789 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 08:53:26,804 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:53:26,804 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:53:26,806 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:53:26,806 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:53:26,807 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:53:26,807 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:53:26,807 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:53:26,808 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:53:26,808 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:53:26,808 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:53:26,808 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:53:26,808 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:53:26,808 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:53:26,809 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:53:26,809 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:53:26,810 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:53:26,811 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:53:26,811 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:53:26,811 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:53:26,811 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:53:26,812 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:53:26,812 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:53:26,812 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:53:26,812 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:53:26,812 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:53:26,813 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:53:26,813 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:53:26,813 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:53:26,814 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:53:26,814 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:53:26,814 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:53:26,814 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:53:26,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:53:26,815 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:53:26,815 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:53:26,815 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:53:26,879 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:53:26,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:53:26,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:53:26,902 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:53:26,903 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:53:26,903 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label30_true-unreach-call.c [2018-10-27 08:53:26,982 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fdfd0ea56/a4025f2b25534cc2aeebb60622e4925a/FLAG82bca4095 [2018-10-27 08:53:27,849 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:53:27,850 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label30_true-unreach-call.c [2018-10-27 08:53:27,893 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fdfd0ea56/a4025f2b25534cc2aeebb60622e4925a/FLAG82bca4095 [2018-10-27 08:53:27,908 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fdfd0ea56/a4025f2b25534cc2aeebb60622e4925a [2018-10-27 08:53:27,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:53:27,922 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:53:27,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:53:27,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:53:27,927 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:53:27,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:53:27" (1/1) ... [2018-10-27 08:53:27,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ad324f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:27, skipping insertion in model container [2018-10-27 08:53:27,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:53:27" (1/1) ... [2018-10-27 08:53:27,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:53:28,175 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:53:30,231 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:53:30,238 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:53:31,320 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:53:31,383 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:53:31,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:31 WrapperNode [2018-10-27 08:53:31,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:53:31,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:53:31,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:53:31,386 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:53:31,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:31" (1/1) ... [2018-10-27 08:53:31,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:31" (1/1) ... [2018-10-27 08:53:32,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:53:32,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:53:32,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:53:32,175 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:53:32,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:31" (1/1) ... [2018-10-27 08:53:32,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:31" (1/1) ... [2018-10-27 08:53:32,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:31" (1/1) ... [2018-10-27 08:53:32,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:31" (1/1) ... [2018-10-27 08:53:32,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:31" (1/1) ... [2018-10-27 08:53:32,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:31" (1/1) ... [2018-10-27 08:53:32,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:31" (1/1) ... [2018-10-27 08:53:32,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:53:32,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:53:32,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:53:32,642 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:53:32,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:31" (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 08:53:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:53:32,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:53:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-27 08:53:32,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-27 08:53:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-27 08:53:32,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-27 08:53:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 08:53:32,721 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 08:53:32,722 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 08:53:32,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 08:53:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:53:32,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:53:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:53:32,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:53:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:53:32,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:53:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:53:32,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:53:51,091 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:53:51,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:53:51 BoogieIcfgContainer [2018-10-27 08:53:51,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:53:51,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:53:51,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:53:51,097 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:53:51,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:53:27" (1/3) ... [2018-10-27 08:53:51,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ebfeb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:53:51, skipping insertion in model container [2018-10-27 08:53:51,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:53:31" (2/3) ... [2018-10-27 08:53:51,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ebfeb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:53:51, skipping insertion in model container [2018-10-27 08:53:51,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:53:51" (3/3) ... [2018-10-27 08:53:51,101 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label30_true-unreach-call.c [2018-10-27 08:53:51,111 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:53:51,121 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:53:51,139 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:53:51,201 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:53:51,202 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:53:51,202 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:53:51,202 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:53:51,202 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:53:51,202 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:53:51,202 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:53:51,203 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:53:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-27 08:53:51,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-27 08:53:51,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:53:51,277 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] [2018-10-27 08:53:51,280 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:53:51,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:53:51,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1703893274, now seen corresponding path program 1 times [2018-10-27 08:53:51,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:53:51,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:53:51,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:53:51,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:53:51,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:53:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:53:51,905 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 08:53:51,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:53:51,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:53:51,908 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:53:51,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:53:51,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:53:51,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:53:51,934 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-27 08:54:11,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:54:11,113 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-10-27 08:54:11,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:54:11,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-10-27 08:54:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:54:11,172 INFO L225 Difference]: With dead ends: 4999 [2018-10-27 08:54:11,172 INFO L226 Difference]: Without dead ends: 3219 [2018-10-27 08:54:11,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:54:11,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-10-27 08:54:11,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-10-27 08:54:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-27 08:54:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-10-27 08:54:11,399 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 55 [2018-10-27 08:54:11,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:54:11,400 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-10-27 08:54:11,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:54:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-10-27 08:54:11,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-27 08:54:11,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:54:11,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:11,409 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:54:11,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:54:11,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1692857214, now seen corresponding path program 1 times [2018-10-27 08:54:11,410 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:54:11,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:54:11,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:54:11,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:54:11,411 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:54:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:54:11,743 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:54:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:54:12,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:54:12,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:54:12,126 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:54:12,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:54:12,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:54:12,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:54:12,130 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-10-27 08:54:45,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:54:45,289 INFO L93 Difference]: Finished difference Result 10726 states and 19725 transitions. [2018-10-27 08:54:45,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:54:45,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-27 08:54:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:54:45,353 INFO L225 Difference]: With dead ends: 10726 [2018-10-27 08:54:45,354 INFO L226 Difference]: Without dead ends: 7517 [2018-10-27 08:54:45,368 INFO L605 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 [2018-10-27 08:54:45,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7517 states. [2018-10-27 08:54:45,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7517 to 7482. [2018-10-27 08:54:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7482 states. [2018-10-27 08:54:45,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7482 states to 7482 states and 12419 transitions. [2018-10-27 08:54:45,611 INFO L78 Accepts]: Start accepts. Automaton has 7482 states and 12419 transitions. Word has length 127 [2018-10-27 08:54:45,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:54:45,613 INFO L481 AbstractCegarLoop]: Abstraction has 7482 states and 12419 transitions. [2018-10-27 08:54:45,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:54:45,613 INFO L276 IsEmpty]: Start isEmpty. Operand 7482 states and 12419 transitions. [2018-10-27 08:54:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 08:54:45,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:54:45,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:45,628 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:54:45,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:54:45,629 INFO L82 PathProgramCache]: Analyzing trace with hash -2052765116, now seen corresponding path program 1 times [2018-10-27 08:54:45,631 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:54:45,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:54:45,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:54:45,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:54:45,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:54:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:54:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:54:46,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:54:46,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:54:46,182 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:54:46,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:54:46,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:54:46,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:54:46,184 INFO L87 Difference]: Start difference. First operand 7482 states and 12419 transitions. Second operand 6 states. [2018-10-27 08:55:33,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:55:33,932 INFO L93 Difference]: Finished difference Result 28463 states and 48867 transitions. [2018-10-27 08:55:33,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 08:55:33,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-27 08:55:33,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:55:34,057 INFO L225 Difference]: With dead ends: 28463 [2018-10-27 08:55:34,057 INFO L226 Difference]: Without dead ends: 20987 [2018-10-27 08:55:34,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:55:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20987 states. [2018-10-27 08:55:34,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20987 to 20893. [2018-10-27 08:55:34,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20893 states. [2018-10-27 08:55:34,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20893 states to 20893 states and 30705 transitions. [2018-10-27 08:55:34,704 INFO L78 Accepts]: Start accepts. Automaton has 20893 states and 30705 transitions. Word has length 145 [2018-10-27 08:55:34,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:55:34,705 INFO L481 AbstractCegarLoop]: Abstraction has 20893 states and 30705 transitions. [2018-10-27 08:55:34,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:55:34,705 INFO L276 IsEmpty]: Start isEmpty. Operand 20893 states and 30705 transitions. [2018-10-27 08:55:34,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-27 08:55:34,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:55:34,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:34,714 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:55:34,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:55:34,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1705394297, now seen corresponding path program 1 times [2018-10-27 08:55:34,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:55:34,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:55:34,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:55:34,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:55:34,720 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:55:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:55:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:55:35,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:55:35,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:55:35,176 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:55:35,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:55:35,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:55:35,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:55:35,177 INFO L87 Difference]: Start difference. First operand 20893 states and 30705 transitions. Second operand 5 states. [2018-10-27 08:55:58,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:55:58,069 INFO L93 Difference]: Finished difference Result 61961 states and 96442 transitions. [2018-10-27 08:55:58,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:55:58,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2018-10-27 08:55:58,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:55:58,237 INFO L225 Difference]: With dead ends: 61961 [2018-10-27 08:55:58,238 INFO L226 Difference]: Without dead ends: 41074 [2018-10-27 08:55:58,296 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 08:55:58,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41074 states. [2018-10-27 08:55:59,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41074 to 39994. [2018-10-27 08:55:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39994 states. [2018-10-27 08:55:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39994 states to 39994 states and 56224 transitions. [2018-10-27 08:55:59,356 INFO L78 Accepts]: Start accepts. Automaton has 39994 states and 56224 transitions. Word has length 190 [2018-10-27 08:55:59,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:55:59,356 INFO L481 AbstractCegarLoop]: Abstraction has 39994 states and 56224 transitions. [2018-10-27 08:55:59,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:55:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 39994 states and 56224 transitions. [2018-10-27 08:55:59,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-27 08:55:59,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:55:59,366 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, 2, 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] [2018-10-27 08:55:59,366 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:55:59,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:55:59,367 INFO L82 PathProgramCache]: Analyzing trace with hash -680528982, now seen corresponding path program 1 times [2018-10-27 08:55:59,367 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:55:59,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:55:59,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:55:59,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:55:59,368 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:55:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:56:00,207 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 96 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:56:00,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:56:00,207 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:56:00,210 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-27 08:56:00,212 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], [5566], [5568], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [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 08:56:00,277 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:56:00,277 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:56:00,657 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:56:00,661 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 08:56:00,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:56:00,705 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:56:01,238 INFO L227 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 75.73% of their original sizes. [2018-10-27 08:56:01,238 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:56:01,504 INFO L415 sIntCurrentIteration]: We unified 209 AI predicates to 209 [2018-10-27 08:56:01,504 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:56:01,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:56:01,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:56:01,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:56:01,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:56:01,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:56:01,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:56:01,507 INFO L87 Difference]: Start difference. First operand 39994 states and 56224 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown