java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:50:04,294 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:50:04,296 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:50:04,311 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:50:04,312 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:50:04,313 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:50:04,314 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:50:04,319 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:50:04,322 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:50:04,322 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:50:04,326 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:50:04,327 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:50:04,328 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:50:04,329 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:50:04,330 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:50:04,333 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:50:04,334 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:50:04,336 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:50:04,338 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:50:04,340 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:50:04,342 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:50:04,350 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:50:04,353 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:50:04,356 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:50:04,356 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:50:04,357 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:50:04,361 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:50:04,364 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:50:04,365 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:50:04,366 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:50:04,366 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:50:04,367 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:50:04,368 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:50:04,368 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:50:04,369 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:50:04,369 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:50:04,370 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:50:04,394 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:50:04,395 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:50:04,395 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:50:04,397 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:50:04,397 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:50:04,397 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:50:04,397 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:50:04,397 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:50:04,401 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:50:04,401 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:50:04,401 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:50:04,401 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:50:04,402 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:50:04,402 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:50:04,403 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:50:04,403 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:50:04,403 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:50:04,403 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:50:04,403 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:50:04,404 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:50:04,405 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:50:04,406 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:50:04,406 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:50:04,406 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:50:04,406 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:50:04,406 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:50:04,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:50:04,407 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:50:04,407 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:50:04,407 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:50:04,408 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:50:04,408 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:50:04,408 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:50:04,408 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:50:04,408 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:50:04,409 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:50:04,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:50:04,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:50:04,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:50:04,489 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:50:04,489 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:50:04,490 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-10-27 07:50:04,556 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a9cf3bb68/64c3eecfa5a64e61bb9ee64426a2f66e/FLAG703d80466 [2018-10-27 07:50:05,311 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:50:05,312 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-10-27 07:50:05,347 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a9cf3bb68/64c3eecfa5a64e61bb9ee64426a2f66e/FLAG703d80466 [2018-10-27 07:50:05,366 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a9cf3bb68/64c3eecfa5a64e61bb9ee64426a2f66e [2018-10-27 07:50:05,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:50:05,382 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:50:05,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:50:05,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:50:05,387 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:50:05,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:50:05" (1/1) ... [2018-10-27 07:50:05,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:05, skipping insertion in model container [2018-10-27 07:50:05,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:50:05" (1/1) ... [2018-10-27 07:50:05,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:50:05,575 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:50:06,815 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:50:06,821 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:50:07,426 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:50:07,462 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:50:07,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:07 WrapperNode [2018-10-27 07:50:07,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:50:07,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:50:07,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:50:07,465 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:50:07,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:07" (1/1) ... [2018-10-27 07:50:07,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:07" (1/1) ... [2018-10-27 07:50:07,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:50:07,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:50:07,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:50:07,952 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:50:07,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:07" (1/1) ... [2018-10-27 07:50:07,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:07" (1/1) ... [2018-10-27 07:50:07,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:07" (1/1) ... [2018-10-27 07:50:07,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:07" (1/1) ... [2018-10-27 07:50:08,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:07" (1/1) ... [2018-10-27 07:50:08,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:07" (1/1) ... [2018-10-27 07:50:08,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:07" (1/1) ... [2018-10-27 07:50:08,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:50:08,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:50:08,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:50:08,237 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:50:08,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:07" (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 07:50:08,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:50:08,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:50:08,312 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 07:50:08,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 07:50:08,312 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 07:50:08,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 07:50:08,313 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 07:50:08,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 07:50:08,313 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:50:08,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:50:08,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:50:08,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:50:08,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:50:08,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:50:19,747 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:50:19,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:50:19 BoogieIcfgContainer [2018-10-27 07:50:19,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:50:19,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:50:19,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:50:19,753 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:50:19,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:50:05" (1/3) ... [2018-10-27 07:50:19,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be9eaa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:50:19, skipping insertion in model container [2018-10-27 07:50:19,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:50:07" (2/3) ... [2018-10-27 07:50:19,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be9eaa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:50:19, skipping insertion in model container [2018-10-27 07:50:19,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:50:19" (3/3) ... [2018-10-27 07:50:19,757 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label54_true-unreach-call.c [2018-10-27 07:50:19,767 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:50:19,778 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:50:19,796 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:50:19,857 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:50:19,857 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:50:19,858 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:50:19,858 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:50:19,858 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:50:19,858 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:50:19,858 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:50:19,858 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:50:19,917 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 07:50:19,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-27 07:50:19,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:50:19,927 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] [2018-10-27 07:50:19,930 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:50:19,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:50:19,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2139876300, now seen corresponding path program 1 times [2018-10-27 07:50:19,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:50:20,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:50:20,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:50:20,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:50:20,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:50:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:50:20,385 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:50:20,525 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 07:50:20,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:50:20,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:50:20,528 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:50:20,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:50:20,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:50:20,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:50:20,550 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 07:50:30,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:50:30,673 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 07:50:30,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:50:30,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-10-27 07:50:30,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:50:30,719 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 07:50:30,720 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 07:50:30,737 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 07:50:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 07:50:30,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 07:50:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 07:50:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-10-27 07:50:30,918 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 40 [2018-10-27 07:50:30,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:50:30,919 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-10-27 07:50:30,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:50:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-10-27 07:50:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-27 07:50:30,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:50:30,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:30,931 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:50:30,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:50:30,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1482898002, now seen corresponding path program 1 times [2018-10-27 07:50:30,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:50:30,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:50:30,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:50:30,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:50:30,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:50:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:50:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:50:31,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:50:31,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 07:50:31,321 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:50:31,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 07:50:31,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 07:50:31,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 07:50:31,325 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-10-27 07:50:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:50:43,554 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-10-27 07:50:43,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:50:43,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-27 07:50:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:50:43,582 INFO L225 Difference]: With dead ends: 4818 [2018-10-27 07:50:43,583 INFO L226 Difference]: Without dead ends: 3220 [2018-10-27 07:50:43,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 07:50:43,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-10-27 07:50:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-10-27 07:50:43,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-10-27 07:50:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-10-27 07:50:43,710 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 114 [2018-10-27 07:50:43,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:50:43,711 INFO L481 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-10-27 07:50:43,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 07:50:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-10-27 07:50:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-27 07:50:43,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:50:43,723 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:43,724 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:50:43,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:50:43,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1633492773, now seen corresponding path program 1 times [2018-10-27 07:50:43,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:50:43,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:50:43,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:50:43,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:50:43,725 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:50:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:50:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:50:44,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:50:44,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:50:44,177 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:50:44,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:50:44,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:50:44,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:50:44,178 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-10-27 07:50:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:50:56,438 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-10-27 07:50:56,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:50:56,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-10-27 07:50:56,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:50:56,497 INFO L225 Difference]: With dead ends: 11148 [2018-10-27 07:50:56,497 INFO L226 Difference]: Without dead ends: 7968 [2018-10-27 07:50:56,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:50:56,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-10-27 07:50:56,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-10-27 07:50:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-10-27 07:50:56,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-10-27 07:50:56,750 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 119 [2018-10-27 07:50:56,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:50:56,751 INFO L481 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-10-27 07:50:56,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:50:56,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-10-27 07:50:56,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-27 07:50:56,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:50:56,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:56,755 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:50:56,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:50:56,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1525604427, now seen corresponding path program 1 times [2018-10-27 07:50:56,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:50:56,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:50:56,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:50:56,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:50:56,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:50:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:50:57,028 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:50:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:50:57,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:50:57,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:50:57,389 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:50:57,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:50:57,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:50:57,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:50:57,390 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-10-27 07:51:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:51:07,817 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-10-27 07:51:07,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:51:07,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-27 07:51:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:51:07,903 INFO L225 Difference]: With dead ends: 22224 [2018-10-27 07:51:07,904 INFO L226 Difference]: Without dead ends: 14306 [2018-10-27 07:51:07,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:51:07,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-10-27 07:51:08,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-10-27 07:51:08,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-10-27 07:51:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-10-27 07:51:08,336 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 127 [2018-10-27 07:51:08,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:51:08,336 INFO L481 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-10-27 07:51:08,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:51:08,337 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-10-27 07:51:08,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-27 07:51:08,342 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:51:08,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:08,342 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:51:08,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:08,343 INFO L82 PathProgramCache]: Analyzing trace with hash -654123146, now seen corresponding path program 1 times [2018-10-27 07:51:08,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:51:08,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:08,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:51:08,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:08,348 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:51:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:51:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:51:08,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:51:08,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:51:08,694 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:51:08,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:51:08,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:51:08,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:51:08,697 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-10-27 07:51:28,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:51:28,520 INFO L93 Difference]: Finished difference Result 56456 states and 95976 transitions. [2018-10-27 07:51:28,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 07:51:28,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-10-27 07:51:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:51:28,759 INFO L225 Difference]: With dead ends: 56456 [2018-10-27 07:51:28,759 INFO L226 Difference]: Without dead ends: 42243 [2018-10-27 07:51:28,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:51:28,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42243 states. [2018-10-27 07:51:29,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42243 to 42003. [2018-10-27 07:51:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42003 states. [2018-10-27 07:51:30,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42003 states to 42003 states and 62980 transitions. [2018-10-27 07:51:30,072 INFO L78 Accepts]: Start accepts. Automaton has 42003 states and 62980 transitions. Word has length 144 [2018-10-27 07:51:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:51:30,072 INFO L481 AbstractCegarLoop]: Abstraction has 42003 states and 62980 transitions. [2018-10-27 07:51:30,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:51:30,073 INFO L276 IsEmpty]: Start isEmpty. Operand 42003 states and 62980 transitions. [2018-10-27 07:51:30,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-27 07:51:30,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:51:30,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:30,079 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:51:30,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:30,080 INFO L82 PathProgramCache]: Analyzing trace with hash -271525473, now seen corresponding path program 1 times [2018-10-27 07:51:30,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:51:30,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:30,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:51:30,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:30,081 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:51:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:51:30,356 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:51:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:51:31,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:51:31,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:51:31,049 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:51:31,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:51:31,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:51:31,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:51:31,051 INFO L87 Difference]: Start difference. First operand 42003 states and 62980 transitions. Second operand 6 states. [2018-10-27 07:51:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:51:43,384 INFO L93 Difference]: Finished difference Result 104625 states and 165914 transitions. [2018-10-27 07:51:43,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:51:43,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-10-27 07:51:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:51:43,607 INFO L225 Difference]: With dead ends: 104625 [2018-10-27 07:51:43,607 INFO L226 Difference]: Without dead ends: 62628 [2018-10-27 07:51:43,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:51:43,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62628 states. [2018-10-27 07:51:44,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62628 to 62378. [2018-10-27 07:51:44,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62378 states. [2018-10-27 07:51:44,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62378 states to 62378 states and 87792 transitions. [2018-10-27 07:51:44,983 INFO L78 Accepts]: Start accepts. Automaton has 62378 states and 87792 transitions. Word has length 165 [2018-10-27 07:51:44,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:51:44,983 INFO L481 AbstractCegarLoop]: Abstraction has 62378 states and 87792 transitions. [2018-10-27 07:51:44,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:51:44,983 INFO L276 IsEmpty]: Start isEmpty. Operand 62378 states and 87792 transitions. [2018-10-27 07:51:45,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-27 07:51:45,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:51:45,001 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:51:45,002 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:51:45,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:45,002 INFO L82 PathProgramCache]: Analyzing trace with hash 708461889, now seen corresponding path program 1 times [2018-10-27 07:51:45,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:51:45,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:45,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:51:45,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:51:45,009 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:51:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:51:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 66 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 07:51:45,379 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:51:45,380 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:51:45,383 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-10-27 07:51:45,388 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2087], [2089], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2396], [2397], [2400], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:51:45,471 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:51:45,471 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:51:46,227 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:51:46,229 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 07:51:46,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:51:46,270 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:51:47,023 INFO L227 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 75.44% of their original sizes. [2018-10-27 07:51:47,023 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:51:47,275 INFO L415 sIntCurrentIteration]: We unified 198 AI predicates to 198 [2018-10-27 07:51:47,276 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:51:47,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:51:47,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-27 07:51:47,277 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:51:47,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:51:47,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:51:47,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:51:47,279 INFO L87 Difference]: Start difference. First operand 62378 states and 87792 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown