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/Problem13_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:15:59,468 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:15:59,470 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:15:59,483 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:15:59,483 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:15:59,484 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:15:59,485 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:15:59,487 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:15:59,489 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:15:59,490 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:15:59,491 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:15:59,491 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:15:59,492 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:15:59,493 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:15:59,495 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:15:59,495 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:15:59,496 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:15:59,498 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:15:59,500 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:15:59,502 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:15:59,503 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:15:59,504 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:15:59,507 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:15:59,507 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:15:59,508 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:15:59,509 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:15:59,510 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:15:59,510 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:15:59,511 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:15:59,513 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:15:59,513 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:15:59,514 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:15:59,514 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:15:59,514 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:15:59,515 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:15:59,516 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:15:59,516 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 14:15:59,533 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:15:59,534 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:15:59,535 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:15:59,535 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:15:59,535 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:15:59,535 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:15:59,536 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:15:59,536 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:15:59,536 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:15:59,536 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:15:59,537 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:15:59,537 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:15:59,538 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:15:59,538 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:15:59,538 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:15:59,538 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:15:59,539 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:15:59,539 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:15:59,539 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:15:59,539 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:15:59,540 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:15:59,540 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:15:59,540 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:15:59,540 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:15:59,540 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:15:59,541 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:15:59,541 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:15:59,541 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:15:59,541 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:15:59,541 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:15:59,542 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:15:59,542 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:15:59,542 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:15:59,542 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:15:59,600 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:15:59,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:15:59,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:15:59,626 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:15:59,626 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:15:59,627 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-10-27 14:15:59,699 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b988b8b1f/33b038d99bd54e8a9e36f7e1a432f815/FLAG93d11d1ae [2018-10-27 14:16:00,554 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:16:00,555 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-10-27 14:16:00,605 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b988b8b1f/33b038d99bd54e8a9e36f7e1a432f815/FLAG93d11d1ae [2018-10-27 14:16:00,622 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b988b8b1f/33b038d99bd54e8a9e36f7e1a432f815 [2018-10-27 14:16:00,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:16:00,636 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:16:00,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:16:00,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:16:00,641 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:16:00,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:16:00" (1/1) ... [2018-10-27 14:16:00,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:00, skipping insertion in model container [2018-10-27 14:16:00,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:16:00" (1/1) ... [2018-10-27 14:16:00,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:16:00,849 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:16:02,279 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:16:02,286 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:16:03,071 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:16:03,113 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:16:03,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:03 WrapperNode [2018-10-27 14:16:03,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:16:03,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:16:03,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:16:03,116 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:16:03,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:03" (1/1) ... [2018-10-27 14:16:03,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:03" (1/1) ... [2018-10-27 14:16:03,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:16:03,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:16:03,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:16:03,740 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:16:03,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:03" (1/1) ... [2018-10-27 14:16:03,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:03" (1/1) ... [2018-10-27 14:16:03,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:03" (1/1) ... [2018-10-27 14:16:03,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:03" (1/1) ... [2018-10-27 14:16:03,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:03" (1/1) ... [2018-10-27 14:16:04,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:03" (1/1) ... [2018-10-27 14:16:04,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:03" (1/1) ... [2018-10-27 14:16:04,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:16:04,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:16:04,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:16:04,205 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:16:04,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:03" (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 14:16:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:16:04,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:16:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 14:16:04,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 14:16:04,284 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 14:16:04,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 14:16:04,284 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:16:04,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:16:04,284 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:16:04,285 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:16:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:16:04,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:16:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:16:04,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:16:15,374 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:16:15,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:16:15 BoogieIcfgContainer [2018-10-27 14:16:15,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:16:15,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:16:15,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:16:15,384 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:16:15,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:16:00" (1/3) ... [2018-10-27 14:16:15,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0c6fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:16:15, skipping insertion in model container [2018-10-27 14:16:15,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:16:03" (2/3) ... [2018-10-27 14:16:15,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0c6fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:16:15, skipping insertion in model container [2018-10-27 14:16:15,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:16:15" (3/3) ... [2018-10-27 14:16:15,388 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26_true-unreach-call.c [2018-10-27 14:16:15,401 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:16:15,419 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:16:15,437 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:16:15,492 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:16:15,493 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:16:15,493 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:16:15,493 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:16:15,493 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:16:15,493 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:16:15,494 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:16:15,494 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:16:15,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 14:16:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-27 14:16:15,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:16:15,547 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] [2018-10-27 14:16:15,549 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:16:15,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:16:15,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1543659883, now seen corresponding path program 1 times [2018-10-27 14:16:15,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:16:15,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:15,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:16:15,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:15,611 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:16:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:16:16,056 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 14:16:16,068 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 14:16:16,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:16:16,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:16:16,071 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:16:16,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:16:16,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:16:16,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:16:16,100 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-27 14:16:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:16:29,583 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-27 14:16:29,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:16:29,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-10-27 14:16:29,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:16:29,631 INFO L225 Difference]: With dead ends: 3968 [2018-10-27 14:16:29,631 INFO L226 Difference]: Without dead ends: 2842 [2018-10-27 14:16:29,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:16:29,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-27 14:16:29,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-27 14:16:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-27 14:16:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-27 14:16:29,833 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 45 [2018-10-27 14:16:29,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:16:29,834 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-27 14:16:29,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:16:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-27 14:16:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-27 14:16:29,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:16:29,846 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:29,850 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:16:29,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:16:29,850 INFO L82 PathProgramCache]: Analyzing trace with hash 369865390, now seen corresponding path program 1 times [2018-10-27 14:16:29,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:16:29,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:29,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:16:29,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:29,853 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:16:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:16:30,209 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:16:30,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:16:30,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:16:30,210 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:16:30,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:16:30,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:16:30,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:16:30,213 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-27 14:16:47,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:16:47,944 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-27 14:16:47,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:16:47,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2018-10-27 14:16:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:16:47,973 INFO L225 Difference]: With dead ends: 5673 [2018-10-27 14:16:47,973 INFO L226 Difference]: Without dead ends: 3698 [2018-10-27 14:16:47,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:16:47,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-27 14:16:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-27 14:16:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-27 14:16:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5871 transitions. [2018-10-27 14:16:48,087 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5871 transitions. Word has length 115 [2018-10-27 14:16:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:16:48,087 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5871 transitions. [2018-10-27 14:16:48,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:16:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5871 transitions. [2018-10-27 14:16:48,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-27 14:16:48,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:16:48,094 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:16:48,094 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:16:48,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:16:48,094 INFO L82 PathProgramCache]: Analyzing trace with hash 241566930, now seen corresponding path program 1 times [2018-10-27 14:16:48,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:16:48,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:48,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:16:48,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:16:48,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:16:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:16:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:16:48,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:16:48,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:16:48,261 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:16:48,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:16:48,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:16:48,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:16:48,263 INFO L87 Difference]: Start difference. First operand 3687 states and 5871 transitions. Second operand 5 states. [2018-10-27 14:17:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:17:01,964 INFO L93 Difference]: Finished difference Result 10963 states and 17868 transitions. [2018-10-27 14:17:01,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:17:01,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-10-27 14:17:01,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:17:02,006 INFO L225 Difference]: With dead ends: 10963 [2018-10-27 14:17:02,006 INFO L226 Difference]: Without dead ends: 7282 [2018-10-27 14:17:02,021 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:17:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-27 14:17:02,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-27 14:17:02,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-27 14:17:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10522 transitions. [2018-10-27 14:17:02,208 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10522 transitions. Word has length 117 [2018-10-27 14:17:02,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:17:02,208 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10522 transitions. [2018-10-27 14:17:02,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:17:02,209 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10522 transitions. [2018-10-27 14:17:02,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-27 14:17:02,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:17:02,213 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:17:02,214 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:17:02,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:17:02,214 INFO L82 PathProgramCache]: Analyzing trace with hash 572519882, now seen corresponding path program 1 times [2018-10-27 14:17:02,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:17:02,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:17:02,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:17:02,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:17:02,216 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:17:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:17:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:17:02,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:17:02,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:17:02,369 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:17:02,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:17:02,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:17:02,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:17:02,371 INFO L87 Difference]: Start difference. First operand 7175 states and 10522 transitions. Second operand 4 states. [2018-10-27 14:17:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:17:12,514 INFO L93 Difference]: Finished difference Result 27675 states and 43307 transitions. [2018-10-27 14:17:12,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:17:12,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2018-10-27 14:17:12,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:17:12,614 INFO L225 Difference]: With dead ends: 27675 [2018-10-27 14:17:12,615 INFO L226 Difference]: Without dead ends: 20506 [2018-10-27 14:17:12,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:17:12,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20506 states. [2018-10-27 14:17:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20506 to 20467. [2018-10-27 14:17:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20467 states. [2018-10-27 14:17:13,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20467 states to 20467 states and 29135 transitions. [2018-10-27 14:17:13,255 INFO L78 Accepts]: Start accepts. Automaton has 20467 states and 29135 transitions. Word has length 161 [2018-10-27 14:17:13,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:17:13,255 INFO L481 AbstractCegarLoop]: Abstraction has 20467 states and 29135 transitions. [2018-10-27 14:17:13,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:17:13,256 INFO L276 IsEmpty]: Start isEmpty. Operand 20467 states and 29135 transitions. [2018-10-27 14:17:13,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-27 14:17:13,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:17:13,260 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:17:13,260 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:17:13,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:17:13,262 INFO L82 PathProgramCache]: Analyzing trace with hash 499433324, now seen corresponding path program 1 times [2018-10-27 14:17:13,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:17:13,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:17:13,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:17:13,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:17:13,264 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:17:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:17:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:17:13,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:17:13,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:17:13,511 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:17:13,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:17:13,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:17:13,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:17:13,513 INFO L87 Difference]: Start difference. First operand 20467 states and 29135 transitions. Second operand 4 states. [2018-10-27 14:17:23,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:17:23,912 INFO L93 Difference]: Finished difference Result 47396 states and 67722 transitions. [2018-10-27 14:17:23,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:17:23,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2018-10-27 14:17:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:17:24,019 INFO L225 Difference]: With dead ends: 47396 [2018-10-27 14:17:24,019 INFO L226 Difference]: Without dead ends: 26935 [2018-10-27 14:17:24,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:17:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26935 states. [2018-10-27 14:17:24,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26935 to 26934. [2018-10-27 14:17:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26934 states. [2018-10-27 14:17:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26934 states to 26934 states and 34386 transitions. [2018-10-27 14:17:24,695 INFO L78 Accepts]: Start accepts. Automaton has 26934 states and 34386 transitions. Word has length 166 [2018-10-27 14:17:24,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:17:24,695 INFO L481 AbstractCegarLoop]: Abstraction has 26934 states and 34386 transitions. [2018-10-27 14:17:24,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:17:24,696 INFO L276 IsEmpty]: Start isEmpty. Operand 26934 states and 34386 transitions. [2018-10-27 14:17:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-27 14:17:24,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:17:24,712 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:17:24,712 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:17:24,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:17:24,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2012871233, now seen corresponding path program 1 times [2018-10-27 14:17:24,713 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:17:24,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:17:24,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:17:24,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:17:24,714 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:17:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:17:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:17:25,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:17:25,498 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:17:25,499 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-10-27 14:17:25,501 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2887], [2889], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3363], [3365], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3598], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 14:17:25,572 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:17:25,572 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:17:27,086 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:17:28,026 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:17:28,028 INFO L272 AbstractInterpreter]: Visited 170 different actions 170 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 14:17:28,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:17:28,071 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:17:30,245 INFO L227 lantSequenceWeakener]: Weakened 307 states. On average, predicates are now at 71.27% of their original sizes. [2018-10-27 14:17:30,245 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:17:31,060 INFO L415 sIntCurrentIteration]: We unified 330 AI predicates to 330 [2018-10-27 14:17:31,060 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:17:31,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:17:31,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-27 14:17:31,062 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:17:31,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-27 14:17:31,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 14:17:31,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-10-27 14:17:31,063 INFO L87 Difference]: Start difference. First operand 26934 states and 34386 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown