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_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:12:00,313 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:12:00,316 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:12:00,332 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:12:00,333 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:12:00,335 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:12:00,336 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:12:00,339 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:12:00,341 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:12:00,343 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:12:00,346 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:12:00,347 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:12:00,348 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:12:00,349 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:12:00,353 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:12:00,359 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:12:00,362 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:12:00,364 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:12:00,367 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:12:00,371 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:12:00,372 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:12:00,374 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:12:00,377 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 02:12:00,377 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 02:12:00,379 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 02:12:00,380 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 02:12:00,381 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 02:12:00,382 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 02:12:00,384 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 02:12:00,386 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 02:12:00,386 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 02:12:00,386 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-25 02:12:00,387 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 02:12:00,387 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 02:12:00,389 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 02:12:00,390 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 02:12:00,391 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 [2018-10-25 02:12:00,417 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:12:00,417 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:12:00,422 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:12:00,422 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:12:00,422 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:12:00,422 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:12:00,423 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:12:00,423 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:12:00,423 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:12:00,423 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:12:00,423 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:12:00,424 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:12:00,424 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:12:00,424 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:12:00,425 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:12:00,425 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:12:00,426 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:12:00,426 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:12:00,426 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:12:00,426 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:12:00,426 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:12:00,426 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:12:00,428 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:12:00,428 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:12:00,428 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:12:00,429 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:12:00,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:12:00,429 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:12:00,429 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:12:00,429 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:12:00,430 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:12:00,430 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:12:00,430 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:12:00,430 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:12:00,430 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:12:00,431 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:12:00,496 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:12:00,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:12:00,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:12:00,522 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:12:00,523 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:12:00,524 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label20_true-unreach-call.c [2018-10-25 02:12:00,592 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c36da9c7/49a7d7fe0e5c4298996befe32474d4e8/FLAG53375d1c3 [2018-10-25 02:12:01,530 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:12:01,531 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label20_true-unreach-call.c [2018-10-25 02:12:01,592 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c36da9c7/49a7d7fe0e5c4298996befe32474d4e8/FLAG53375d1c3 [2018-10-25 02:12:01,611 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6c36da9c7/49a7d7fe0e5c4298996befe32474d4e8 [2018-10-25 02:12:01,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:12:01,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:12:01,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:12:01,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:12:01,637 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:12:01,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:12:01" (1/1) ... [2018-10-25 02:12:01,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1086b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:01, skipping insertion in model container [2018-10-25 02:12:01,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:12:01" (1/1) ... [2018-10-25 02:12:01,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:12:01,887 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:12:03,954 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:12:03,959 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:12:05,286 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:12:05,340 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:12:05,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:05 WrapperNode [2018-10-25 02:12:05,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:12:05,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:12:05,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:12:05,342 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:12:05,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:05" (1/1) ... [2018-10-25 02:12:05,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:05" (1/1) ... [2018-10-25 02:12:06,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:12:06,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:12:06,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:12:06,098 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:12:06,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:05" (1/1) ... [2018-10-25 02:12:06,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:05" (1/1) ... [2018-10-25 02:12:06,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:05" (1/1) ... [2018-10-25 02:12:06,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:05" (1/1) ... [2018-10-25 02:12:06,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:05" (1/1) ... [2018-10-25 02:12:06,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:05" (1/1) ... [2018-10-25 02:12:06,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:05" (1/1) ... [2018-10-25 02:12:06,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:12:06,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:12:06,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:12:06,608 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:12:06,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:05" (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 [2018-10-25 02:12:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:12:06,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:12:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-25 02:12:06,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-25 02:12:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-25 02:12:06,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-25 02:12:06,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-25 02:12:06,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-25 02:12:06,679 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-25 02:12:06,679 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-25 02:12:06,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:12:06,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:12:06,680 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:12:06,680 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:12:06,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:12:06,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:12:06,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:12:06,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:12:25,106 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:12:25,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:12:25 BoogieIcfgContainer [2018-10-25 02:12:25,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:12:25,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:12:25,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:12:25,113 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:12:25,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:12:01" (1/3) ... [2018-10-25 02:12:25,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742f3d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:12:25, skipping insertion in model container [2018-10-25 02:12:25,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:12:05" (2/3) ... [2018-10-25 02:12:25,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742f3d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:12:25, skipping insertion in model container [2018-10-25 02:12:25,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:12:25" (3/3) ... [2018-10-25 02:12:25,117 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label20_true-unreach-call.c [2018-10-25 02:12:25,128 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:12:25,141 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:12:25,161 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:12:25,214 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:12:25,214 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:12:25,214 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:12:25,214 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:12:25,214 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:12:25,215 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:12:25,215 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:12:25,215 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:12:25,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-25 02:12:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-25 02:12:25,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:12:25,289 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] [2018-10-25 02:12:25,291 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:12:25,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:12:25,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1661872980, now seen corresponding path program 1 times [2018-10-25 02:12:25,301 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:12:25,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:12:25,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:12:25,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:12:25,362 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:12:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:12:25,777 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:12:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:12:25,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:12:25,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:12:25,907 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:12:25,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:12:25,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:12:25,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:12:25,933 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-25 02:12:43,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:12:43,644 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-10-25 02:12:43,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:12:43,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-10-25 02:12:43,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:12:43,693 INFO L225 Difference]: With dead ends: 4999 [2018-10-25 02:12:43,693 INFO L226 Difference]: Without dead ends: 3219 [2018-10-25 02:12:43,705 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 [2018-10-25 02:12:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-10-25 02:12:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-10-25 02:12:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-25 02:12:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-10-25 02:12:43,907 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 50 [2018-10-25 02:12:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:12:43,908 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-10-25 02:12:43,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:12:43,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-10-25 02:12:43,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-25 02:12:43,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:12:43,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:12:43,924 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:12:43,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:12:43,925 INFO L82 PathProgramCache]: Analyzing trace with hash -425746485, now seen corresponding path program 1 times [2018-10-25 02:12:43,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:12:43,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:12:43,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:12:43,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:12:43,928 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:12:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:12:44,401 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:12:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:12:44,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:12:44,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:12:44,792 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:12:44,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:12:44,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:12:44,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:12:44,795 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-10-25 02:13:15,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:13:15,149 INFO L93 Difference]: Finished difference Result 10735 states and 19736 transitions. [2018-10-25 02:13:15,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:13:15,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-10-25 02:13:15,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:13:15,201 INFO L225 Difference]: With dead ends: 10735 [2018-10-25 02:13:15,202 INFO L226 Difference]: Without dead ends: 7526 [2018-10-25 02:13:15,215 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 [2018-10-25 02:13:15,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7526 states. [2018-10-25 02:13:15,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7526 to 7491. [2018-10-25 02:13:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7491 states. [2018-10-25 02:13:15,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7491 states to 7491 states and 12431 transitions. [2018-10-25 02:13:15,434 INFO L78 Accepts]: Start accepts. Automaton has 7491 states and 12431 transitions. Word has length 122 [2018-10-25 02:13:15,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:13:15,435 INFO L481 AbstractCegarLoop]: Abstraction has 7491 states and 12431 transitions. [2018-10-25 02:13:15,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:13:15,435 INFO L276 IsEmpty]: Start isEmpty. Operand 7491 states and 12431 transitions. [2018-10-25 02:13:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-25 02:13:15,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:13:15,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:13:15,439 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:13:15,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:13:15,440 INFO L82 PathProgramCache]: Analyzing trace with hash -314476791, now seen corresponding path program 1 times [2018-10-25 02:13:15,440 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:13:15,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:13:15,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:13:15,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:13:15,441 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:13:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:13:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:13:15,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:13:15,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:13:15,986 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:13:15,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:13:15,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:13:15,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:13:15,988 INFO L87 Difference]: Start difference. First operand 7491 states and 12431 transitions. Second operand 6 states. [2018-10-25 02:14:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:14:03,688 INFO L93 Difference]: Finished difference Result 27077 states and 45861 transitions. [2018-10-25 02:14:03,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 02:14:03,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-25 02:14:03,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:14:03,814 INFO L225 Difference]: With dead ends: 27077 [2018-10-25 02:14:03,815 INFO L226 Difference]: Without dead ends: 19592 [2018-10-25 02:14:03,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-25 02:14:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19592 states. [2018-10-25 02:14:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19592 to 19503. [2018-10-25 02:14:04,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19503 states. [2018-10-25 02:14:04,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19503 states to 19503 states and 28768 transitions. [2018-10-25 02:14:04,334 INFO L78 Accepts]: Start accepts. Automaton has 19503 states and 28768 transitions. Word has length 140 [2018-10-25 02:14:04,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:14:04,335 INFO L481 AbstractCegarLoop]: Abstraction has 19503 states and 28768 transitions. [2018-10-25 02:14:04,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:14:04,335 INFO L276 IsEmpty]: Start isEmpty. Operand 19503 states and 28768 transitions. [2018-10-25 02:14:04,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-25 02:14:04,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:14:04,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:14:04,341 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:14:04,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:14:04,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1766353928, now seen corresponding path program 1 times [2018-10-25 02:14:04,342 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:14:04,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:14:04,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:14:04,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:14:04,343 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:14:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:14:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:14:04,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:14:04,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 02:14:04,703 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:14:04,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 02:14:04,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 02:14:04,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 02:14:04,704 INFO L87 Difference]: Start difference. First operand 19503 states and 28768 transitions. Second operand 5 states. [2018-10-25 02:14:35,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:14:35,655 INFO L93 Difference]: Finished difference Result 59177 states and 91818 transitions. [2018-10-25 02:14:35,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 02:14:35,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2018-10-25 02:14:35,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:14:35,832 INFO L225 Difference]: With dead ends: 59177 [2018-10-25 02:14:35,833 INFO L226 Difference]: Without dead ends: 39680 [2018-10-25 02:14:35,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:14:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39680 states. [2018-10-25 02:14:36,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39680 to 38615. [2018-10-25 02:14:36,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38615 states. [2018-10-25 02:14:36,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38615 states to 38615 states and 52857 transitions. [2018-10-25 02:14:36,848 INFO L78 Accepts]: Start accepts. Automaton has 38615 states and 52857 transitions. Word has length 185 [2018-10-25 02:14:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:14:36,848 INFO L481 AbstractCegarLoop]: Abstraction has 38615 states and 52857 transitions. [2018-10-25 02:14:36,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 02:14:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 38615 states and 52857 transitions. [2018-10-25 02:14:36,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-25 02:14:36,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:14:36,859 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, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 02:14:36,859 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:14:36,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:14:36,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1259026054, now seen corresponding path program 1 times [2018-10-25 02:14:36,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:14:36,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:14:36,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:14:36,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:14:36,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:14:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:14:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 02:14:37,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:14:37,410 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:14:37,412 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 206 with the following transitions: [2018-10-25 02:14:37,416 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], [5526], [5528], [5531], [5539], [5547], [5555], [5563], [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] [2018-10-25 02:14:37,497 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:14:37,498 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:14:38,005 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 02:14:38,007 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-25 02:14:38,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:14:38,052 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 02:14:39,022 INFO L232 lantSequenceWeakener]: Weakened 196 states. On average, predicates are now at 75.64% of their original sizes. [2018-10-25 02:14:39,023 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 02:14:39,273 INFO L413 sIntCurrentIteration]: We have 204 unified AI predicates [2018-10-25 02:14:39,273 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 02:14:39,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:14:39,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 02:14:39,275 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:14:39,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:14:39,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:14:39,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:14:39,276 INFO L87 Difference]: Start difference. First operand 38615 states and 52857 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown