java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 12:25:37,434 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 12:25:37,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 12:25:37,448 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 12:25:37,449 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 12:25:37,450 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 12:25:37,451 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 12:25:37,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 12:25:37,454 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 12:25:37,455 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 12:25:37,456 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 12:25:37,457 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 12:25:37,457 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 12:25:37,459 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 12:25:37,460 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 12:25:37,461 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 12:25:37,464 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 12:25:37,465 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 12:25:37,476 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 12:25:37,477 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 12:25:37,481 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 12:25:37,483 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 12:25:37,485 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 12:25:37,488 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 12:25:37,489 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 12:25:37,489 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 12:25:37,490 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 12:25:37,492 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 12:25:37,493 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 12:25:37,494 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 12:25:37,494 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 12:25:37,495 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 12:25:37,495 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 12:25:37,495 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 12:25:37,496 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 12:25:37,497 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 12:25:37,497 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 12:25:37,511 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 12:25:37,512 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 12:25:37,512 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 12:25:37,513 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 12:25:37,513 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 12:25:37,513 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 12:25:37,513 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 12:25:37,513 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 12:25:37,514 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 12:25:37,514 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 12:25:37,514 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 12:25:37,514 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 12:25:37,515 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 12:25:37,515 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 12:25:37,515 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 12:25:37,515 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 12:25:37,516 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 12:25:37,516 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 12:25:37,516 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 12:25:37,516 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 12:25:37,516 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 12:25:37,517 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 12:25:37,517 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 12:25:37,517 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 12:25:37,517 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 12:25:37,517 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 12:25:37,517 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 12:25:37,518 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 12:25:37,518 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 12:25:37,518 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 12:25:37,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 12:25:37,518 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 12:25:37,519 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 12:25:37,519 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 12:25:37,561 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 12:25:37,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 12:25:37,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 12:25:37,581 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 12:25:37,581 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 12:25:37,582 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label10_true-unreach-call.c [2018-10-27 12:25:37,644 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/df956dd72/635e42458c5941029648aa16041efa32/FLAG7c73df079 [2018-10-27 12:25:38,374 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 12:25:38,375 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label10_true-unreach-call.c [2018-10-27 12:25:38,393 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/df956dd72/635e42458c5941029648aa16041efa32/FLAG7c73df079 [2018-10-27 12:25:38,408 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/df956dd72/635e42458c5941029648aa16041efa32 [2018-10-27 12:25:38,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 12:25:38,421 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 12:25:38,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 12:25:38,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 12:25:38,427 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 12:25:38,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:25:38" (1/1) ... [2018-10-27 12:25:38,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4aab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:38, skipping insertion in model container [2018-10-27 12:25:38,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:25:38" (1/1) ... [2018-10-27 12:25:38,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 12:25:38,551 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 12:25:39,330 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:25:39,338 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 12:25:39,600 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:25:39,624 INFO L193 MainTranslator]: Completed translation [2018-10-27 12:25:39,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:39 WrapperNode [2018-10-27 12:25:39,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 12:25:39,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 12:25:39,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 12:25:39,627 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 12:25:39,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:39" (1/1) ... [2018-10-27 12:25:39,689 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:39" (1/1) ... [2018-10-27 12:25:39,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 12:25:39,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 12:25:39,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 12:25:39,987 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 12:25:40,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:39" (1/1) ... [2018-10-27 12:25:40,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:39" (1/1) ... [2018-10-27 12:25:40,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:39" (1/1) ... [2018-10-27 12:25:40,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:39" (1/1) ... [2018-10-27 12:25:40,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:39" (1/1) ... [2018-10-27 12:25:40,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:39" (1/1) ... [2018-10-27 12:25:40,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:39" (1/1) ... [2018-10-27 12:25:40,145 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 12:25:40,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 12:25:40,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 12:25:40,146 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 12:25:40,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:39" (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 12:25:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 12:25:40,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 12:25:40,220 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 12:25:40,220 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 12:25:40,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 12:25:40,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 12:25:40,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 12:25:40,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 12:25:45,289 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 12:25:45,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:25:45 BoogieIcfgContainer [2018-10-27 12:25:45,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 12:25:45,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 12:25:45,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 12:25:45,295 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 12:25:45,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:25:38" (1/3) ... [2018-10-27 12:25:45,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:25:45, skipping insertion in model container [2018-10-27 12:25:45,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:39" (2/3) ... [2018-10-27 12:25:45,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:25:45, skipping insertion in model container [2018-10-27 12:25:45,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:25:45" (3/3) ... [2018-10-27 12:25:45,300 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label10_true-unreach-call.c [2018-10-27 12:25:45,310 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 12:25:45,320 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 12:25:45,338 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 12:25:45,384 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 12:25:45,384 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 12:25:45,385 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 12:25:45,385 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 12:25:45,385 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 12:25:45,385 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 12:25:45,385 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 12:25:45,386 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 12:25:45,415 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 12:25:45,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-27 12:25:45,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:25:45,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:45,440 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:25:45,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:25:45,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1745062215, now seen corresponding path program 1 times [2018-10-27 12:25:45,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:25:45,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:45,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:25:45,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:45,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:25:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:25:46,409 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:25:46,693 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 12:25:46,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:25:46,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:25:46,696 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:25:46,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:25:46,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:25:46,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:25:46,722 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-27 12:25:48,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:25:48,677 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-10-27 12:25:48,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:25:48,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2018-10-27 12:25:48,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:25:48,701 INFO L225 Difference]: With dead ends: 838 [2018-10-27 12:25:48,702 INFO L226 Difference]: Without dead ends: 524 [2018-10-27 12:25:48,710 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 12:25:48,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-10-27 12:25:48,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-10-27 12:25:48,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-27 12:25:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-10-27 12:25:48,867 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 188 [2018-10-27 12:25:48,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:25:48,869 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-10-27 12:25:48,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:25:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-10-27 12:25:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-27 12:25:48,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:25:48,890 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:48,892 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:25:48,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:25:48,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1171199392, now seen corresponding path program 1 times [2018-10-27 12:25:48,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:25:48,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:48,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:25:48,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:48,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:25:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:25:49,246 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 12:25:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:25:49,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:25:49,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 12:25:49,334 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:25:49,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 12:25:49,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 12:25:49,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 12:25:49,338 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-10-27 12:25:53,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:25:53,160 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-10-27 12:25:53,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:25:53,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2018-10-27 12:25:53,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:25:53,177 INFO L225 Difference]: With dead ends: 1581 [2018-10-27 12:25:53,177 INFO L226 Difference]: Without dead ends: 1065 [2018-10-27 12:25:53,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 12:25:53,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-10-27 12:25:53,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-10-27 12:25:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-27 12:25:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-10-27 12:25:53,263 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 198 [2018-10-27 12:25:53,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:25:53,264 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-10-27 12:25:53,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 12:25:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-10-27 12:25:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-27 12:25:53,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:25:53,269 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:53,270 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:25:53,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:25:53,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1250557379, now seen corresponding path program 1 times [2018-10-27 12:25:53,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:25:53,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:53,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:25:53,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:53,272 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:25:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:25:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:25:53,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:25:53,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:25:53,674 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:25:53,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:25:53,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:25:53,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:25:53,676 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-10-27 12:25:56,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:25:56,623 INFO L93 Difference]: Finished difference Result 2903 states and 5102 transitions. [2018-10-27 12:25:56,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:25:56,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2018-10-27 12:25:56,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:25:56,638 INFO L225 Difference]: With dead ends: 2903 [2018-10-27 12:25:56,639 INFO L226 Difference]: Without dead ends: 1886 [2018-10-27 12:25:56,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:25:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2018-10-27 12:25:56,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1866. [2018-10-27 12:25:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1866 states. [2018-10-27 12:25:56,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 3136 transitions. [2018-10-27 12:25:56,704 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 3136 transitions. Word has length 201 [2018-10-27 12:25:56,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:25:56,705 INFO L481 AbstractCegarLoop]: Abstraction has 1866 states and 3136 transitions. [2018-10-27 12:25:56,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:25:56,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 3136 transitions. [2018-10-27 12:25:56,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-27 12:25:56,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:25:56,714 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:56,714 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:25:56,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:25:56,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1434088812, now seen corresponding path program 1 times [2018-10-27 12:25:56,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:25:56,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:56,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:25:56,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:56,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:25:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:25:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:25:56,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:25:56,942 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:25:56,943 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-10-27 12:25:56,946 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:25:57,008 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:25:57,009 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:25:58,517 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:25:58,519 INFO L272 AbstractInterpreter]: Visited 189 different actions 189 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 12:25:58,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:25:58,564 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:25:59,684 INFO L227 lantSequenceWeakener]: Weakened 210 states. On average, predicates are now at 73.32% of their original sizes. [2018-10-27 12:25:59,684 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:26:00,756 INFO L415 sIntCurrentIteration]: We unified 218 AI predicates to 218 [2018-10-27 12:26:00,757 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:26:00,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:26:00,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-10-27 12:26:00,760 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:26:00,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 12:26:00,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 12:26:00,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2018-10-27 12:26:00,762 INFO L87 Difference]: Start difference. First operand 1866 states and 3136 transitions. Second operand 16 states. [2018-10-27 12:26:20,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:26:20,345 INFO L93 Difference]: Finished difference Result 3936 states and 6627 transitions. [2018-10-27 12:26:20,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:26:20,345 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 219 [2018-10-27 12:26:20,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:26:20,357 INFO L225 Difference]: With dead ends: 3936 [2018-10-27 12:26:20,358 INFO L226 Difference]: Without dead ends: 2076 [2018-10-27 12:26:20,366 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 221 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2018-10-27 12:26:20,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2018-10-27 12:26:20,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2074. [2018-10-27 12:26:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2074 states. [2018-10-27 12:26:20,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 3354 transitions. [2018-10-27 12:26:20,440 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 3354 transitions. Word has length 219 [2018-10-27 12:26:20,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:26:20,440 INFO L481 AbstractCegarLoop]: Abstraction has 2074 states and 3354 transitions. [2018-10-27 12:26:20,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-27 12:26:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 3354 transitions. [2018-10-27 12:26:20,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-27 12:26:20,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:26:20,449 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:20,450 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:26:20,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:26:20,451 INFO L82 PathProgramCache]: Analyzing trace with hash -2047187745, now seen corresponding path program 1 times [2018-10-27 12:26:20,451 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:26:20,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:20,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:26:20,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:20,453 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:26:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:26:20,967 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:26:20,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:26:20,968 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:26:20,968 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-10-27 12:26:20,969 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:26:20,992 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:26:20,992 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:26:22,860 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:26:22,861 INFO L272 AbstractInterpreter]: Visited 192 different actions 380 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:26:22,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:26:22,869 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:26:24,072 INFO L227 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 73.1% of their original sizes. [2018-10-27 12:26:24,072 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:26:24,458 INFO L415 sIntCurrentIteration]: We unified 227 AI predicates to 227 [2018-10-27 12:26:24,459 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:26:24,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:26:24,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-27 12:26:24,460 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:26:24,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 12:26:24,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 12:26:24,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-10-27 12:26:24,461 INFO L87 Difference]: Start difference. First operand 2074 states and 3354 transitions. Second operand 18 states. [2018-10-27 12:27:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:27:26,455 INFO L93 Difference]: Finished difference Result 6086 states and 10346 transitions. [2018-10-27 12:27:26,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 12:27:26,455 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 228 [2018-10-27 12:27:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:27:26,475 INFO L225 Difference]: With dead ends: 6086 [2018-10-27 12:27:26,475 INFO L226 Difference]: Without dead ends: 3806 [2018-10-27 12:27:26,486 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2018-10-27 12:27:26,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2018-10-27 12:27:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3802. [2018-10-27 12:27:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3802 states. [2018-10-27 12:27:26,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3802 states to 3802 states and 5482 transitions. [2018-10-27 12:27:26,589 INFO L78 Accepts]: Start accepts. Automaton has 3802 states and 5482 transitions. Word has length 228 [2018-10-27 12:27:26,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:27:26,590 INFO L481 AbstractCegarLoop]: Abstraction has 3802 states and 5482 transitions. [2018-10-27 12:27:26,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 12:27:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3802 states and 5482 transitions. [2018-10-27 12:27:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-27 12:27:26,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:27:26,603 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:26,603 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:27:26,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:27:26,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1310677518, now seen corresponding path program 1 times [2018-10-27 12:27:26,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:27:26,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:27:26,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:27:26,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:27:26,606 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:27:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:27:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 50 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-27 12:27:27,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:27:27,084 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:27:27,084 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-10-27 12:27:27,085 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [32], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:27:27,098 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:27:27,099 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:27:28,367 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:27:28,368 INFO L272 AbstractInterpreter]: Visited 193 different actions 380 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:27:28,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:27:28,377 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:27:29,445 INFO L227 lantSequenceWeakener]: Weakened 71 states. On average, predicates are now at 81.44% of their original sizes. [2018-10-27 12:27:29,445 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:27:32,656 INFO L415 sIntCurrentIteration]: We unified 231 AI predicates to 231 [2018-10-27 12:27:32,657 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:27:32,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:27:32,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-27 12:27:32,657 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:27:32,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-27 12:27:32,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-27 12:27:32,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2018-10-27 12:27:32,659 INFO L87 Difference]: Start difference. First operand 3802 states and 5482 transitions. Second operand 22 states. [2018-10-27 12:28:17,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:17,502 INFO L93 Difference]: Finished difference Result 8021 states and 11697 transitions. [2018-10-27 12:28:17,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-27 12:28:17,502 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 232 [2018-10-27 12:28:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:17,522 INFO L225 Difference]: With dead ends: 8021 [2018-10-27 12:28:17,523 INFO L226 Difference]: Without dead ends: 4433 [2018-10-27 12:28:17,533 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 183 SyntacticMatches, 28 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=196, Invalid=734, Unknown=0, NotChecked=0, Total=930 [2018-10-27 12:28:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2018-10-27 12:28:17,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4430. [2018-10-27 12:28:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4430 states. [2018-10-27 12:28:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 6158 transitions. [2018-10-27 12:28:17,641 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 6158 transitions. Word has length 232 [2018-10-27 12:28:17,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:17,642 INFO L481 AbstractCegarLoop]: Abstraction has 4430 states and 6158 transitions. [2018-10-27 12:28:17,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-27 12:28:17,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 6158 transitions. [2018-10-27 12:28:17,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-27 12:28:17,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:17,655 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:17,655 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:17,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:17,655 INFO L82 PathProgramCache]: Analyzing trace with hash -84699834, now seen corresponding path program 1 times [2018-10-27 12:28:17,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:17,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:17,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:17,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:17,657 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:28:18,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:18,195 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:28:18,195 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-10-27 12:28:18,196 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:28:18,202 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:28:18,203 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:28:20,668 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:28:20,668 INFO L272 AbstractInterpreter]: Visited 194 different actions 579 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 12:28:20,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:20,676 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:28:20,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:20,676 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:28:20,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:20,687 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:28:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:20,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:28:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:28:21,150 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:28:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:28:21,550 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:28:21,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-27 12:28:21,551 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:28:21,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 12:28:21,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 12:28:21,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 12:28:21,553 INFO L87 Difference]: Start difference. First operand 4430 states and 6158 transitions. Second operand 6 states. [2018-10-27 12:28:23,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:23,539 INFO L93 Difference]: Finished difference Result 7984 states and 11421 transitions. [2018-10-27 12:28:23,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 12:28:23,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 254 [2018-10-27 12:28:23,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:23,566 INFO L225 Difference]: With dead ends: 7984 [2018-10-27 12:28:23,567 INFO L226 Difference]: Without dead ends: 4396 [2018-10-27 12:28:23,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 507 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-27 12:28:23,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2018-10-27 12:28:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4396. [2018-10-27 12:28:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4396 states. [2018-10-27 12:28:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 6047 transitions. [2018-10-27 12:28:23,702 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 6047 transitions. Word has length 254 [2018-10-27 12:28:23,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:23,703 INFO L481 AbstractCegarLoop]: Abstraction has 4396 states and 6047 transitions. [2018-10-27 12:28:23,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 12:28:23,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 6047 transitions. [2018-10-27 12:28:23,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-27 12:28:23,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:23,716 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:23,717 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:23,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:23,717 INFO L82 PathProgramCache]: Analyzing trace with hash 828520908, now seen corresponding path program 1 times [2018-10-27 12:28:23,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:23,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:23,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:23,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:23,718 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:28:24,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:24,048 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:28:24,048 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 276 with the following transitions: [2018-10-27 12:28:24,049 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:28:24,055 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:28:24,055 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:28:26,916 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:28:26,916 INFO L272 AbstractInterpreter]: Visited 194 different actions 581 times. Merged at 7 different actions 23 times. Never widened. Found 4 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-27 12:28:26,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:26,923 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:28:26,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:26,923 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:28:26,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:26,931 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:28:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:27,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:28:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:28:27,274 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:28:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:28:27,626 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:28:27,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-10-27 12:28:27,627 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:28:27,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 12:28:27,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 12:28:27,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-27 12:28:27,628 INFO L87 Difference]: Start difference. First operand 4396 states and 6047 transitions. Second operand 7 states. [2018-10-27 12:28:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:30,654 INFO L93 Difference]: Finished difference Result 13801 states and 21707 transitions. [2018-10-27 12:28:30,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 12:28:30,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2018-10-27 12:28:30,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:30,717 INFO L225 Difference]: With dead ends: 13801 [2018-10-27 12:28:30,717 INFO L226 Difference]: Without dead ends: 10247 [2018-10-27 12:28:30,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 549 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-27 12:28:30,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10247 states. [2018-10-27 12:28:31,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10247 to 10015. [2018-10-27 12:28:31,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10015 states. [2018-10-27 12:28:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10015 states to 10015 states and 14016 transitions. [2018-10-27 12:28:31,113 INFO L78 Accepts]: Start accepts. Automaton has 10015 states and 14016 transitions. Word has length 275 [2018-10-27 12:28:31,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:31,114 INFO L481 AbstractCegarLoop]: Abstraction has 10015 states and 14016 transitions. [2018-10-27 12:28:31,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 12:28:31,114 INFO L276 IsEmpty]: Start isEmpty. Operand 10015 states and 14016 transitions. [2018-10-27 12:28:31,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-10-27 12:28:31,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:31,146 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:31,146 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:31,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:31,147 INFO L82 PathProgramCache]: Analyzing trace with hash -988067075, now seen corresponding path program 1 times [2018-10-27 12:28:31,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:31,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:31,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:31,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:31,148 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:31,828 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 12:28:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:28:32,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:32,060 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:28:32,061 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 296 with the following transitions: [2018-10-27 12:28:32,061 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:28:32,066 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:28:32,067 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:28:34,196 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:28:34,196 INFO L272 AbstractInterpreter]: Visited 194 different actions 581 times. Merged at 7 different actions 23 times. Never widened. Found 4 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-27 12:28:34,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:34,201 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:28:34,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:34,201 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:28:34,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:34,212 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:28:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:34,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:28:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-27 12:28:34,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:28:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-27 12:28:35,202 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:28:35,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-27 12:28:35,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:28:35,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:28:35,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:28:35,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 12:28:35,204 INFO L87 Difference]: Start difference. First operand 10015 states and 14016 transitions. Second operand 3 states. [2018-10-27 12:28:36,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:36,750 INFO L93 Difference]: Finished difference Result 17451 states and 24513 transitions. [2018-10-27 12:28:36,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:28:36,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 295 [2018-10-27 12:28:36,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:36,786 INFO L225 Difference]: With dead ends: 17451 [2018-10-27 12:28:36,786 INFO L226 Difference]: Without dead ends: 9593 [2018-10-27 12:28:36,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 588 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 12:28:36,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9593 states. [2018-10-27 12:28:36,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9593 to 9491. [2018-10-27 12:28:36,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9491 states. [2018-10-27 12:28:37,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9491 states to 9491 states and 12760 transitions. [2018-10-27 12:28:37,014 INFO L78 Accepts]: Start accepts. Automaton has 9491 states and 12760 transitions. Word has length 295 [2018-10-27 12:28:37,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:37,015 INFO L481 AbstractCegarLoop]: Abstraction has 9491 states and 12760 transitions. [2018-10-27 12:28:37,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:28:37,015 INFO L276 IsEmpty]: Start isEmpty. Operand 9491 states and 12760 transitions. [2018-10-27 12:28:37,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-10-27 12:28:37,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:37,040 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:28:37,040 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:37,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:37,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1002085534, now seen corresponding path program 1 times [2018-10-27 12:28:37,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:37,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:37,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:37,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:37,042 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:37,574 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:28:37,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:37,575 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:28:37,575 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 297 with the following transitions: [2018-10-27 12:28:37,575 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [350], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:28:37,580 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:28:37,580 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:28:39,645 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:28:39,645 INFO L272 AbstractInterpreter]: Visited 194 different actions 576 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 12:28:39,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:39,655 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:28:39,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:39,655 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:28:39,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:39,663 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:28:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:39,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:28:40,093 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-27 12:28:40,094 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:28:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-27 12:28:40,716 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:28:40,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-27 12:28:40,717 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:28:40,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:28:40,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:28:40,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 12:28:40,718 INFO L87 Difference]: Start difference. First operand 9491 states and 12760 transitions. Second operand 3 states. [2018-10-27 12:28:42,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:42,444 INFO L93 Difference]: Finished difference Result 26170 states and 36688 transitions. [2018-10-27 12:28:42,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:28:42,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 296 [2018-10-27 12:28:42,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:42,529 INFO L225 Difference]: With dead ends: 26170 [2018-10-27 12:28:42,530 INFO L226 Difference]: Without dead ends: 17729 [2018-10-27 12:28:42,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 590 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 12:28:42,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17729 states. [2018-10-27 12:28:42,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17729 to 17726. [2018-10-27 12:28:42,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17726 states. [2018-10-27 12:28:42,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17726 states to 17726 states and 23955 transitions. [2018-10-27 12:28:42,987 INFO L78 Accepts]: Start accepts. Automaton has 17726 states and 23955 transitions. Word has length 296 [2018-10-27 12:28:42,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:42,987 INFO L481 AbstractCegarLoop]: Abstraction has 17726 states and 23955 transitions. [2018-10-27 12:28:42,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:28:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 17726 states and 23955 transitions. [2018-10-27 12:28:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-27 12:28:43,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:43,039 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:43,039 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:43,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:43,040 INFO L82 PathProgramCache]: Analyzing trace with hash 520290584, now seen corresponding path program 1 times [2018-10-27 12:28:43,040 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:43,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:43,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:43,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:43,041 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:28:43,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:43,670 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:28:43,670 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 303 with the following transitions: [2018-10-27 12:28:43,671 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [268], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:28:43,676 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:28:43,676 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:28:46,096 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:28:46,096 INFO L272 AbstractInterpreter]: Visited 194 different actions 581 times. Merged at 7 different actions 23 times. Never widened. Found 4 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-27 12:28:46,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:46,108 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:28:46,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:46,108 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:28:46,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:46,116 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:28:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:46,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:28:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:28:46,434 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:28:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:28:46,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:28:46,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 12:28:46,703 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:28:46,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 12:28:46,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 12:28:46,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-10-27 12:28:46,704 INFO L87 Difference]: Start difference. First operand 17726 states and 23955 transitions. Second operand 9 states. [2018-10-27 12:28:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:54,158 INFO L93 Difference]: Finished difference Result 38610 states and 58272 transitions. [2018-10-27 12:28:54,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-27 12:28:54,158 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 302 [2018-10-27 12:28:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:54,254 INFO L225 Difference]: With dead ends: 38610 [2018-10-27 12:28:54,254 INFO L226 Difference]: Without dead ends: 21932 [2018-10-27 12:28:54,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 633 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=453, Invalid=1803, Unknown=0, NotChecked=0, Total=2256 [2018-10-27 12:28:54,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21932 states. [2018-10-27 12:28:55,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21932 to 20641. [2018-10-27 12:28:55,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20641 states. [2018-10-27 12:28:55,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20641 states to 20641 states and 25099 transitions. [2018-10-27 12:28:55,155 INFO L78 Accepts]: Start accepts. Automaton has 20641 states and 25099 transitions. Word has length 302 [2018-10-27 12:28:55,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:55,155 INFO L481 AbstractCegarLoop]: Abstraction has 20641 states and 25099 transitions. [2018-10-27 12:28:55,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 12:28:55,156 INFO L276 IsEmpty]: Start isEmpty. Operand 20641 states and 25099 transitions. [2018-10-27 12:28:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-10-27 12:28:55,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:55,207 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 12:28:55,207 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:55,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:55,208 INFO L82 PathProgramCache]: Analyzing trace with hash -2116526086, now seen corresponding path program 1 times [2018-10-27 12:28:55,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:55,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:55,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:55,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:55,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 277 proven. 14 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-10-27 12:28:55,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:55,686 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:28:55,686 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-10-27 12:28:55,686 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [20], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [519], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:28:55,691 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:28:55,692 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:28:58,197 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:28:58,197 INFO L272 AbstractInterpreter]: Visited 197 different actions 590 times. Merged at 7 different actions 23 times. Never widened. Found 5 fixpoints after 5 different actions. Largest state had 88 variables. [2018-10-27 12:28:58,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:58,204 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:28:58,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:58,204 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:28:58,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:58,212 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:28:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:58,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:28:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-10-27 12:28:58,860 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:28:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 277 proven. 14 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-10-27 12:28:59,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:28:59,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-10-27 12:28:59,357 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:28:59,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 12:28:59,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 12:28:59,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 12:28:59,358 INFO L87 Difference]: Start difference. First operand 20641 states and 25099 transitions. Second operand 8 states. [2018-10-27 12:29:06,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:29:06,445 INFO L93 Difference]: Finished difference Result 92639 states and 128757 transitions. [2018-10-27 12:29:06,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-27 12:29:06,446 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 424 [2018-10-27 12:29:06,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:29:06,782 INFO L225 Difference]: With dead ends: 92639 [2018-10-27 12:29:06,782 INFO L226 Difference]: Without dead ends: 73073 [2018-10-27 12:29:06,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 868 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2018-10-27 12:29:06,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73073 states. [2018-10-27 12:29:08,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73073 to 71307. [2018-10-27 12:29:08,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71307 states. [2018-10-27 12:29:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71307 states to 71307 states and 88568 transitions. [2018-10-27 12:29:08,538 INFO L78 Accepts]: Start accepts. Automaton has 71307 states and 88568 transitions. Word has length 424 [2018-10-27 12:29:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:29:08,539 INFO L481 AbstractCegarLoop]: Abstraction has 71307 states and 88568 transitions. [2018-10-27 12:29:08,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 12:29:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 71307 states and 88568 transitions. [2018-10-27 12:29:08,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-10-27 12:29:08,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:29:08,640 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:08,641 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:29:08,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:29:08,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1955577358, now seen corresponding path program 1 times [2018-10-27 12:29:08,641 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:29:08,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:29:08,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:29:08,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:29:08,642 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:29:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:29:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 246 proven. 14 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-10-27 12:29:09,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:29:09,743 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:29:09,744 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 432 with the following transitions: [2018-10-27 12:29:09,744 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [20], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [519], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [965], [967], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:29:09,748 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:29:09,748 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:29:10,991 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:29:10,991 INFO L272 AbstractInterpreter]: Visited 194 different actions 388 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-27 12:29:10,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:29:10,998 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:29:12,524 INFO L227 lantSequenceWeakener]: Weakened 426 states. On average, predicates are now at 71.57% of their original sizes. [2018-10-27 12:29:12,525 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:29:13,030 INFO L415 sIntCurrentIteration]: We unified 430 AI predicates to 430 [2018-10-27 12:29:13,030 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:29:13,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:29:13,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [5] total 29 [2018-10-27 12:29:13,031 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:29:13,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-27 12:29:13,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-27 12:29:13,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2018-10-27 12:29:13,032 INFO L87 Difference]: Start difference. First operand 71307 states and 88568 transitions. Second operand 26 states. Received shutdown request... [2018-10-27 12:29:28,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 12:29:28,972 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 12:29:28,978 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 12:29:28,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:29:28 BoogieIcfgContainer [2018-10-27 12:29:28,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 12:29:28,979 INFO L168 Benchmark]: Toolchain (without parser) took 230558.85 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -218.3 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-27 12:29:28,981 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 12:29:28,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1203.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:28,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 360.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.9 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:28,983 INFO L168 Benchmark]: Boogie Preprocessor took 158.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:28,983 INFO L168 Benchmark]: RCFGBuilder took 5144.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 249.6 MB). Peak memory consumption was 249.6 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:28,984 INFO L168 Benchmark]: TraceAbstraction took 223686.94 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 316.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-27 12:29:28,991 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1203.15 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 360.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -872.9 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5144.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 249.6 MB). Peak memory consumption was 249.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223686.94 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 316.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1578]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1578). Cancelled while BasicCegarLoop was constructing difference of abstraction (71307states) and FLOYD_HOARE automaton (currently 13 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (1481 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 223.6s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 174.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3155 SDtfs, 16660 SDslu, 4764 SDs, 0 SdLazy, 29168 SolverSat, 4525 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.5s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 5001 GetRequests, 4746 SyntacticMatches, 41 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1713 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71307occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.6s AbstIntTime, 10 AbstIntIterations, 4 AbstIntStrong, 0.9989995486587027 AbsIntWeakeningRatio, 0.24864376130198915 AbsIntAvgWeakeningVarsNumRemoved, 58.50994575045208 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 3467 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 5389 NumberOfCodeBlocks, 5389 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7210 ConstructedInterpolants, 0 QuantifiedInterpolants, 4026953 SizeOfPredicates, 5 NumberOfNonLiveVariables, 8129 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 25 InterpolantComputations, 7 PerfectInterpolantSequences, 3941/4024 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown