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_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:58:21,478 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:58:21,480 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:58:21,494 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:58:21,494 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:58:21,497 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:58:21,498 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:58:21,501 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:58:21,504 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:58:21,505 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:58:21,507 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:58:21,507 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:58:21,510 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:58:21,511 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:58:21,512 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:58:21,515 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:58:21,517 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:58:21,519 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:58:21,529 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:58:21,532 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:58:21,533 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:58:21,534 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:58:21,539 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:58:21,540 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:58:21,540 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:58:21,541 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:58:21,542 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:58:21,545 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:58:21,546 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:58:21,547 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:58:21,549 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:58:21,549 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:58:21,550 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:58:21,551 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:58:21,552 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:58:21,553 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:58:21,553 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 08:58:21,575 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:58:21,575 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:58:21,578 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:58:21,578 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:58:21,579 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:58:21,579 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:58:21,579 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:58:21,579 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:58:21,580 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:58:21,580 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:58:21,580 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:58:21,580 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:58:21,580 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:58:21,580 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:58:21,582 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:58:21,582 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:58:21,582 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:58:21,582 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:58:21,582 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:58:21,583 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:58:21,583 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:58:21,583 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:58:21,583 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:58:21,583 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:58:21,584 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:58:21,584 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:58:21,584 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:58:21,584 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:58:21,584 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:58:21,584 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:58:21,586 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:58:21,586 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:58:21,587 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:58:21,587 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:58:21,587 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:58:21,587 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:58:21,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:58:21,675 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:58:21,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:58:21,683 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:58:21,683 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:58:21,684 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label54_true-unreach-call.c [2018-10-27 08:58:21,757 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/064714a14/23a4e51b7fab409b9d881ca25f11eb33/FLAGfc83b0754 [2018-10-27 08:58:22,719 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:58:22,720 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label54_true-unreach-call.c [2018-10-27 08:58:22,771 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/064714a14/23a4e51b7fab409b9d881ca25f11eb33/FLAGfc83b0754 [2018-10-27 08:58:22,791 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/064714a14/23a4e51b7fab409b9d881ca25f11eb33 [2018-10-27 08:58:22,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:58:22,808 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:58:22,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:58:22,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:58:22,816 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:58:22,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:58:22" (1/1) ... [2018-10-27 08:58:22,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2874412b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:22, skipping insertion in model container [2018-10-27 08:58:22,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:58:22" (1/1) ... [2018-10-27 08:58:22,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:58:23,136 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:58:25,167 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:58:25,173 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:58:26,306 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:58:26,368 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:58:26,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:26 WrapperNode [2018-10-27 08:58:26,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:58:26,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:58:26,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:58:26,370 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:58:26,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:26" (1/1) ... [2018-10-27 08:58:26,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:26" (1/1) ... [2018-10-27 08:58:27,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:58:27,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:58:27,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:58:27,290 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:58:27,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:26" (1/1) ... [2018-10-27 08:58:27,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:26" (1/1) ... [2018-10-27 08:58:27,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:26" (1/1) ... [2018-10-27 08:58:27,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:26" (1/1) ... [2018-10-27 08:58:27,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:26" (1/1) ... [2018-10-27 08:58:27,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:26" (1/1) ... [2018-10-27 08:58:27,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:26" (1/1) ... [2018-10-27 08:58:27,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:58:27,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:58:27,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:58:27,968 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:58:27,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:26" (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 08:58:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:58:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:58:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-27 08:58:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-27 08:58:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-27 08:58:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-27 08:58:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 08:58:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 08:58:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 08:58:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 08:58:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:58:28,053 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:58:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:58:28,054 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:58:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:58:28,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:58:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:58:28,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:58:46,241 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:58:46,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:58:46 BoogieIcfgContainer [2018-10-27 08:58:46,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:58:46,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:58:46,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:58:46,247 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:58:46,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:58:22" (1/3) ... [2018-10-27 08:58:46,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422709f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:58:46, skipping insertion in model container [2018-10-27 08:58:46,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:58:26" (2/3) ... [2018-10-27 08:58:46,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422709f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:58:46, skipping insertion in model container [2018-10-27 08:58:46,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:58:46" (3/3) ... [2018-10-27 08:58:46,252 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label54_true-unreach-call.c [2018-10-27 08:58:46,262 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:58:46,273 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:58:46,292 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:58:46,345 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:58:46,345 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:58:46,346 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:58:46,346 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:58:46,346 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:58:46,346 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:58:46,346 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:58:46,346 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:58:46,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-27 08:58:46,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-27 08:58:46,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:58:46,413 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, 1, 1, 1, 1, 1] [2018-10-27 08:58:46,416 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:58:46,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:58:46,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2122689370, now seen corresponding path program 1 times [2018-10-27 08:58:46,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:58:46,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:58:46,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:58:46,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:58:46,477 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:58:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:58:46,968 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:58:47,109 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 08:58:47,111 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:58:47,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:58:47,112 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:58:47,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:58:47,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:58:47,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:58:47,151 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-27 08:59:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:59:02,435 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-10-27 08:59:02,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:59:02,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-10-27 08:59:02,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:59:02,490 INFO L225 Difference]: With dead ends: 4998 [2018-10-27 08:59:02,490 INFO L226 Difference]: Without dead ends: 3218 [2018-10-27 08:59:02,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:59:02,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-10-27 08:59:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-10-27 08:59:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-27 08:59:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-10-27 08:59:02,725 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 71 [2018-10-27 08:59:02,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:59:02,726 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-10-27 08:59:02,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:59:02,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-10-27 08:59:02,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-27 08:59:02,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:59:02,742 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:59:02,743 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:59:02,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:59:02,743 INFO L82 PathProgramCache]: Analyzing trace with hash 952822916, now seen corresponding path program 1 times [2018-10-27 08:59:02,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:59:02,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:59:02,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:59:02,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:59:02,746 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:59:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:59:03,105 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:59:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:59:03,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:59:03,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:59:03,479 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:59:03,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:59:03,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:59:03,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:59:03,482 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-10-27 08:59:32,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:59:32,269 INFO L93 Difference]: Finished difference Result 9340 states and 16946 transitions. [2018-10-27 08:59:32,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:59:32,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-27 08:59:32,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:59:32,313 INFO L225 Difference]: With dead ends: 9340 [2018-10-27 08:59:32,313 INFO L226 Difference]: Without dead ends: 6131 [2018-10-27 08:59:32,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:59:32,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2018-10-27 08:59:32,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6091. [2018-10-27 08:59:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6091 states. [2018-10-27 08:59:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 9637 transitions. [2018-10-27 08:59:32,497 INFO L78 Accepts]: Start accepts. Automaton has 6091 states and 9637 transitions. Word has length 143 [2018-10-27 08:59:32,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:59:32,497 INFO L481 AbstractCegarLoop]: Abstraction has 6091 states and 9637 transitions. [2018-10-27 08:59:32,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:59:32,498 INFO L276 IsEmpty]: Start isEmpty. Operand 6091 states and 9637 transitions. [2018-10-27 08:59:32,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 08:59:32,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:59:32,508 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, 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 08:59:32,508 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:59:32,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:59:32,509 INFO L82 PathProgramCache]: Analyzing trace with hash 159779727, now seen corresponding path program 1 times [2018-10-27 08:59:32,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:59:32,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:59:32,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:59:32,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:59:32,510 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:59:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:59:32,744 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:59:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:59:32,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:59:32,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:59:32,796 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:59:32,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:59:32,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:59:32,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:59:32,798 INFO L87 Difference]: Start difference. First operand 6091 states and 9637 transitions. Second operand 6 states. [2018-10-27 08:59:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:59:58,877 INFO L93 Difference]: Finished difference Result 21091 states and 34228 transitions. [2018-10-27 08:59:58,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:59:58,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-27 08:59:58,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:59:58,943 INFO L225 Difference]: With dead ends: 21091 [2018-10-27 08:59:58,943 INFO L226 Difference]: Without dead ends: 15006 [2018-10-27 08:59:58,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:59:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15006 states. [2018-10-27 08:59:59,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15006 to 14817. [2018-10-27 08:59:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14817 states. [2018-10-27 08:59:59,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14817 states to 14817 states and 22424 transitions. [2018-10-27 08:59:59,356 INFO L78 Accepts]: Start accepts. Automaton has 14817 states and 22424 transitions. Word has length 145 [2018-10-27 08:59:59,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:59:59,357 INFO L481 AbstractCegarLoop]: Abstraction has 14817 states and 22424 transitions. [2018-10-27 08:59:59,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:59:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 14817 states and 22424 transitions. [2018-10-27 08:59:59,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-27 08:59:59,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:59:59,367 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, 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] [2018-10-27 08:59:59,367 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:59:59,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:59:59,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1508483004, now seen corresponding path program 1 times [2018-10-27 08:59:59,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:59:59,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:59:59,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:59:59,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:59:59,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:59:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:59:59,615 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:59:59,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:59:59,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:59:59,616 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:59:59,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:59:59,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:59:59,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:59:59,617 INFO L87 Difference]: Start difference. First operand 14817 states and 22424 transitions. Second operand 5 states. [2018-10-27 09:00:31,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 09:00:31,612 INFO L93 Difference]: Finished difference Result 45430 states and 70748 transitions. [2018-10-27 09:00:31,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 09:00:31,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2018-10-27 09:00:31,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 09:00:31,730 INFO L225 Difference]: With dead ends: 45430 [2018-10-27 09:00:31,731 INFO L226 Difference]: Without dead ends: 30619 [2018-10-27 09:00:31,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 09:00:31,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30619 states. [2018-10-27 09:00:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30619 to 30149. [2018-10-27 09:00:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30149 states. [2018-10-27 09:00:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30149 states to 30149 states and 41658 transitions. [2018-10-27 09:00:32,425 INFO L78 Accepts]: Start accepts. Automaton has 30149 states and 41658 transitions. Word has length 176 [2018-10-27 09:00:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 09:00:32,425 INFO L481 AbstractCegarLoop]: Abstraction has 30149 states and 41658 transitions. [2018-10-27 09:00:32,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 09:00:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 30149 states and 41658 transitions. [2018-10-27 09:00:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-27 09:00:32,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 09:00:32,439 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, 3, 3, 3, 3, 3, 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] [2018-10-27 09:00:32,439 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 09:00:32,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:00:32,440 INFO L82 PathProgramCache]: Analyzing trace with hash -300329630, now seen corresponding path program 1 times [2018-10-27 09:00:32,440 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 09:00:32,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:00:32,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 09:00:32,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 09:00:32,441 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 09:00:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 09:00:32,753 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 09:00:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 128 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 09:00:33,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 09:00:33,168 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 09:00:33,170 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-10-27 09:00:33,173 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5650], [5658], [5666], [5674], [5682], [5690], [5694], [5696], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-27 09:00:33,247 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 09:00:33,247 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 09:00:33,852 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 09:00:33,854 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 09:00:33,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 09:00:33,896 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 09:00:34,496 INFO L227 lantSequenceWeakener]: Weakened 231 states. On average, predicates are now at 75.92% of their original sizes. [2018-10-27 09:00:34,496 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 09:00:34,760 INFO L415 sIntCurrentIteration]: We unified 241 AI predicates to 241 [2018-10-27 09:00:34,761 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 09:00:34,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 09:00:34,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 09:00:34,762 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 09:00:34,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 09:00:34,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 09:00:34,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 09:00:34,763 INFO L87 Difference]: Start difference. First operand 30149 states and 41658 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown