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/Problem03_label52_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:42:15,367 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:42:15,369 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:42:15,382 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:42:15,383 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:42:15,384 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:42:15,385 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:42:15,387 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:42:15,389 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:42:15,389 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:42:15,390 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:42:15,391 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:42:15,392 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:42:15,393 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:42:15,394 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:42:15,394 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:42:15,395 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:42:15,397 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:42:15,399 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:42:15,401 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:42:15,402 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:42:15,403 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:42:15,406 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 22:42:15,406 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 22:42:15,407 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 22:42:15,408 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 22:42:15,409 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 22:42:15,410 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 22:42:15,412 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 22:42:15,415 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 22:42:15,416 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 22:42:15,416 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 22:42:15,421 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 [2018-10-24 22:42:15,455 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:42:15,455 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:42:15,458 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:42:15,458 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:42:15,458 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:42:15,458 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:42:15,458 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 22:42:15,461 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:42:15,461 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 22:42:15,461 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:42:15,461 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:42:15,462 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:42:15,462 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:42:15,462 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:42:15,463 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:42:15,463 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:42:15,463 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:42:15,463 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:42:15,464 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:42:15,467 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:42:15,467 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:42:15,467 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:42:15,468 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:42:15,468 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:42:15,468 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:42:15,468 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:42:15,468 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:42:15,468 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:42:15,469 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:42:15,469 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:42:15,469 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:42:15,469 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:42:15,469 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:42:15,470 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:42:15,470 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:42:15,470 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:42:15,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:42:15,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:42:15,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:42:15,554 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:42:15,555 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:42:15,556 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52_false-unreach-call.c [2018-10-24 22:42:15,620 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f8b73da52/c0c1b8ef74de47c78c81e65632872642/FLAG4d99785d7 [2018-10-24 22:42:16,344 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:42:16,346 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label52_false-unreach-call.c [2018-10-24 22:42:16,368 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f8b73da52/c0c1b8ef74de47c78c81e65632872642/FLAG4d99785d7 [2018-10-24 22:42:16,388 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f8b73da52/c0c1b8ef74de47c78c81e65632872642 [2018-10-24 22:42:16,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:42:16,401 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:42:16,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:42:16,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:42:16,406 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:42:16,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:42:16" (1/1) ... [2018-10-24 22:42:16,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4e31e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:16, skipping insertion in model container [2018-10-24 22:42:16,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:42:16" (1/1) ... [2018-10-24 22:42:16,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:42:16,529 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:42:17,339 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:42:17,347 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:42:17,605 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:42:17,632 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:42:17,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:17 WrapperNode [2018-10-24 22:42:17,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:42:17,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:42:17,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:42:17,634 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:42:17,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:17" (1/1) ... [2018-10-24 22:42:17,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:17" (1/1) ... [2018-10-24 22:42:17,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:42:17,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:42:17,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:42:17,966 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:42:17,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:17" (1/1) ... [2018-10-24 22:42:17,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:17" (1/1) ... [2018-10-24 22:42:17,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:17" (1/1) ... [2018-10-24 22:42:17,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:17" (1/1) ... [2018-10-24 22:42:18,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:17" (1/1) ... [2018-10-24 22:42:18,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:17" (1/1) ... [2018-10-24 22:42:18,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:17" (1/1) ... [2018-10-24 22:42:18,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:42:18,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:42:18,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:42:18,125 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:42:18,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:17" (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 [2018-10-24 22:42:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:42:18,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:42:18,182 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:42:18,183 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:42:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:42:18,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:42:18,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:42:18,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:42:23,415 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:42:23,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:42:23 BoogieIcfgContainer [2018-10-24 22:42:23,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:42:23,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:42:23,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:42:23,422 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:42:23,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:42:16" (1/3) ... [2018-10-24 22:42:23,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6964965c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:42:23, skipping insertion in model container [2018-10-24 22:42:23,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:17" (2/3) ... [2018-10-24 22:42:23,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6964965c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:42:23, skipping insertion in model container [2018-10-24 22:42:23,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:42:23" (3/3) ... [2018-10-24 22:42:23,426 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label52_false-unreach-call.c [2018-10-24 22:42:23,437 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:42:23,447 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:42:23,467 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:42:23,514 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:42:23,515 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:42:23,515 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:42:23,515 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:42:23,515 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:42:23,516 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:42:23,516 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:42:23,516 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:42:23,566 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 22:42:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 22:42:23,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:23,593 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:42:23,596 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:23,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:23,606 INFO L82 PathProgramCache]: Analyzing trace with hash 132642340, now seen corresponding path program 1 times [2018-10-24 22:42:23,609 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:23,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:23,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:23,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:23,673 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:24,578 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:42:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:24,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:42:24,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:42:24,829 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:24,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:42:24,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:42:24,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:42:24,856 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-24 22:42:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:26,851 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-10-24 22:42:26,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:42:26,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2018-10-24 22:42:26,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:26,896 INFO L225 Difference]: With dead ends: 848 [2018-10-24 22:42:26,897 INFO L226 Difference]: Without dead ends: 534 [2018-10-24 22:42:26,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:42:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-10-24 22:42:26,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-10-24 22:42:26,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-10-24 22:42:26,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-10-24 22:42:26,996 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 153 [2018-10-24 22:42:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:26,997 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-10-24 22:42:26,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:42:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-10-24 22:42:27,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-24 22:42:27,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:27,005 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:42:27,005 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:27,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:27,006 INFO L82 PathProgramCache]: Analyzing trace with hash 962373920, now seen corresponding path program 1 times [2018-10-24 22:42:27,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:27,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:27,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:27,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:27,008 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:27,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:42:27,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:42:27,380 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:27,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:42:27,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:42:27,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:42:27,384 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-10-24 22:42:29,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:29,320 INFO L93 Difference]: Finished difference Result 1494 states and 2513 transitions. [2018-10-24 22:42:29,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:42:29,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2018-10-24 22:42:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:29,329 INFO L225 Difference]: With dead ends: 1494 [2018-10-24 22:42:29,330 INFO L226 Difference]: Without dead ends: 968 [2018-10-24 22:42:29,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:42:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-10-24 22:42:29,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 952. [2018-10-24 22:42:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-10-24 22:42:29,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1529 transitions. [2018-10-24 22:42:29,379 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1529 transitions. Word has length 166 [2018-10-24 22:42:29,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:29,380 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1529 transitions. [2018-10-24 22:42:29,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:42:29,381 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1529 transitions. [2018-10-24 22:42:29,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 22:42:29,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:29,390 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:42:29,390 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:29,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:29,391 INFO L82 PathProgramCache]: Analyzing trace with hash 766647040, now seen corresponding path program 1 times [2018-10-24 22:42:29,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:29,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:29,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:29,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:29,393 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:29,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:42:29,886 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:42:29,887 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2018-10-24 22:42:29,890 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:42:29,968 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:42:29,968 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:42:31,142 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:42:31,144 INFO L272 AbstractInterpreter]: Visited 154 different actions 154 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-24 22:42:31,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:31,166 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:42:32,201 INFO L232 lantSequenceWeakener]: Weakened 168 states. On average, predicates are now at 69.87% of their original sizes. [2018-10-24 22:42:32,201 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:42:32,701 INFO L413 sIntCurrentIteration]: We have 176 unified AI predicates [2018-10-24 22:42:32,702 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:42:32,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:42:32,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-24 22:42:32,704 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:32,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 22:42:32,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 22:42:32,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-10-24 22:42:32,706 INFO L87 Difference]: Start difference. First operand 952 states and 1529 transitions. Second operand 13 states. [2018-10-24 22:43:23,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:43:23,430 INFO L93 Difference]: Finished difference Result 2108 states and 3387 transitions. [2018-10-24 22:43:23,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 22:43:23,431 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 177 [2018-10-24 22:43:23,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:43:23,437 INFO L225 Difference]: With dead ends: 2108 [2018-10-24 22:43:23,438 INFO L226 Difference]: Without dead ends: 1162 [2018-10-24 22:43:23,441 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 177 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2018-10-24 22:43:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2018-10-24 22:43:23,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1160. [2018-10-24 22:43:23,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2018-10-24 22:43:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1747 transitions. [2018-10-24 22:43:23,476 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1747 transitions. Word has length 177 [2018-10-24 22:43:23,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:43:23,476 INFO L481 AbstractCegarLoop]: Abstraction has 1160 states and 1747 transitions. [2018-10-24 22:43:23,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 22:43:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1747 transitions. [2018-10-24 22:43:23,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-24 22:43:23,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:43:23,481 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:43:23,481 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:43:23,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:23,482 INFO L82 PathProgramCache]: Analyzing trace with hash -2135608565, now seen corresponding path program 1 times [2018-10-24 22:43:23,482 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:43:23,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:23,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:23,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:23,483 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:43:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:43:23,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:23,842 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:43:23,842 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-10-24 22:43:23,843 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:43:23,851 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:43:23,851 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:43:26,551 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:43:26,551 INFO L272 AbstractInterpreter]: Visited 158 different actions 314 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-24 22:43:26,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:26,563 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:43:26,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:26,563 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:43:26,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:26,572 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:43:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:26,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:43:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:43:27,202 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:43:27,448 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-24 22:43:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:43:27,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:43:27,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-10-24 22:43:27,971 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:43:27,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 22:43:27,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 22:43:27,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-10-24 22:43:27,973 INFO L87 Difference]: Start difference. First operand 1160 states and 1747 transitions. Second operand 9 states. [2018-10-24 22:43:40,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:43:40,535 INFO L93 Difference]: Finished difference Result 9426 states and 19261 transitions. [2018-10-24 22:43:40,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-24 22:43:40,537 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 186 [2018-10-24 22:43:40,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:43:40,650 INFO L225 Difference]: With dead ends: 9426 [2018-10-24 22:43:40,650 INFO L226 Difference]: Without dead ends: 8480 [2018-10-24 22:43:40,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2018-10-24 22:43:40,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8480 states. [2018-10-24 22:43:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8480 to 8113. [2018-10-24 22:43:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8113 states. [2018-10-24 22:43:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 12545 transitions. [2018-10-24 22:43:41,067 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 12545 transitions. Word has length 186 [2018-10-24 22:43:41,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:43:41,068 INFO L481 AbstractCegarLoop]: Abstraction has 8113 states and 12545 transitions. [2018-10-24 22:43:41,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 22:43:41,068 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 12545 transitions. [2018-10-24 22:43:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-24 22:43:41,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:43:41,102 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:43:41,102 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:43:41,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:41,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1792689718, now seen corresponding path program 1 times [2018-10-24 22:43:41,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:43:41,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:41,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:41,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:41,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:43:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:43:41,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:43:41,402 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:43:41,403 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-10-24 22:43:41,403 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:43:41,410 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:43:41,410 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:43:42,625 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:43:42,625 INFO L272 AbstractInterpreter]: Visited 157 different actions 308 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:43:42,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:42,629 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:43:44,153 INFO L232 lantSequenceWeakener]: Weakened 197 states. On average, predicates are now at 69.96% of their original sizes. [2018-10-24 22:43:44,153 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:43:44,727 INFO L413 sIntCurrentIteration]: We have 199 unified AI predicates [2018-10-24 22:43:44,728 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:43:44,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:43:44,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-24 22:43:44,728 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:43:44,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 22:43:44,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 22:43:44,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-10-24 22:43:44,730 INFO L87 Difference]: Start difference. First operand 8113 states and 12545 transitions. Second operand 20 states. [2018-10-24 22:44:08,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:44:08,920 INFO L93 Difference]: Finished difference Result 16176 states and 24700 transitions. [2018-10-24 22:44:08,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 22:44:08,920 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 200 [2018-10-24 22:44:08,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:44:08,975 INFO L225 Difference]: With dead ends: 16176 [2018-10-24 22:44:08,976 INFO L226 Difference]: Without dead ends: 8277 [2018-10-24 22:44:09,014 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 208 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2018-10-24 22:44:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2018-10-24 22:44:09,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 8274. [2018-10-24 22:44:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8274 states. [2018-10-24 22:44:09,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8274 states to 8274 states and 12224 transitions. [2018-10-24 22:44:09,242 INFO L78 Accepts]: Start accepts. Automaton has 8274 states and 12224 transitions. Word has length 200 [2018-10-24 22:44:09,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:44:09,242 INFO L481 AbstractCegarLoop]: Abstraction has 8274 states and 12224 transitions. [2018-10-24 22:44:09,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 22:44:09,242 INFO L276 IsEmpty]: Start isEmpty. Operand 8274 states and 12224 transitions. [2018-10-24 22:44:09,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-24 22:44:09,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:44:09,266 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:44:09,266 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:44:09,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:09,268 INFO L82 PathProgramCache]: Analyzing trace with hash -972171771, now seen corresponding path program 1 times [2018-10-24 22:44:09,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:44:09,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:09,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:09,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:09,270 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:44:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:44:09,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:09,727 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:09,727 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-10-24 22:44:09,728 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:09,735 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:09,735 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:44:11,964 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:44:11,964 INFO L272 AbstractInterpreter]: Visited 158 different actions 308 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:44:11,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:11,973 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:44:11,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:11,973 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:44:11,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:11,983 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:44:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:12,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:44:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 22:44:12,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:44:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 22:44:12,330 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:44:12,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-24 22:44:12,330 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:44:12,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:44:12,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:44:12,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:44:12,331 INFO L87 Difference]: Start difference. First operand 8274 states and 12224 transitions. Second operand 3 states. [2018-10-24 22:44:14,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:44:14,078 INFO L93 Difference]: Finished difference Result 23168 states and 35721 transitions. [2018-10-24 22:44:14,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:44:14,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2018-10-24 22:44:14,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:44:14,175 INFO L225 Difference]: With dead ends: 23168 [2018-10-24 22:44:14,175 INFO L226 Difference]: Without dead ends: 15108 [2018-10-24 22:44:14,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 398 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:44:14,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15108 states. [2018-10-24 22:44:14,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15108 to 15080. [2018-10-24 22:44:14,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15080 states. [2018-10-24 22:44:14,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15080 states to 15080 states and 22901 transitions. [2018-10-24 22:44:14,642 INFO L78 Accepts]: Start accepts. Automaton has 15080 states and 22901 transitions. Word has length 200 [2018-10-24 22:44:14,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:44:14,643 INFO L481 AbstractCegarLoop]: Abstraction has 15080 states and 22901 transitions. [2018-10-24 22:44:14,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:44:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 15080 states and 22901 transitions. [2018-10-24 22:44:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-24 22:44:14,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:44:14,671 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:44:14,672 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:44:14,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:14,672 INFO L82 PathProgramCache]: Analyzing trace with hash -491365125, now seen corresponding path program 1 times [2018-10-24 22:44:14,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:44:14,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:14,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:14,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:14,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:44:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 72 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-24 22:44:15,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:15,143 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:15,144 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 212 with the following transitions: [2018-10-24 22:44:15,144 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:15,151 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:15,152 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:44:17,486 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:44:17,487 INFO L272 AbstractInterpreter]: Visited 159 different actions 316 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-24 22:44:17,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:17,496 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:44:17,496 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:17,496 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:44:17,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:17,506 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:44:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:17,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:44:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-24 22:44:18,130 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:44:18,238 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-24 22:44:18,260 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:44:18,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-24 22:44:18,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:44:18,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:44:18,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:44:18,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:44:18,261 INFO L87 Difference]: Start difference. First operand 15080 states and 22901 transitions. Second operand 3 states. [2018-10-24 22:44:19,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:44:19,816 INFO L93 Difference]: Finished difference Result 29868 states and 45784 transitions. [2018-10-24 22:44:19,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:44:19,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2018-10-24 22:44:19,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:44:19,913 INFO L225 Difference]: With dead ends: 29868 [2018-10-24 22:44:19,913 INFO L226 Difference]: Without dead ends: 19489 [2018-10-24 22:44:19,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 420 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:44:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19489 states. [2018-10-24 22:44:20,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19489 to 19484. [2018-10-24 22:44:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19484 states. [2018-10-24 22:44:20,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19484 states to 19484 states and 29601 transitions. [2018-10-24 22:44:20,530 INFO L78 Accepts]: Start accepts. Automaton has 19484 states and 29601 transitions. Word has length 211 [2018-10-24 22:44:20,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:44:20,531 INFO L481 AbstractCegarLoop]: Abstraction has 19484 states and 29601 transitions. [2018-10-24 22:44:20,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:44:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 19484 states and 29601 transitions. [2018-10-24 22:44:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-24 22:44:20,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:44:20,601 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:44:20,602 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:44:20,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:20,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1260389909, now seen corresponding path program 1 times [2018-10-24 22:44:20,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:44:20,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:20,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:20,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:20,603 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:44:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 142 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-24 22:44:21,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:21,108 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:21,108 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-10-24 22:44:21,108 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [342], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:21,117 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:21,117 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:44:25,962 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:44:25,962 INFO L272 AbstractInterpreter]: Visited 159 different actions 475 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-24 22:44:25,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:25,973 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:44:25,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:25,973 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:44:25,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:25,981 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:44:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:26,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:44:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 22:44:26,740 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:44:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 22:44:27,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:44:27,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 22:44:27,107 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:44:27,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 22:44:27,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 22:44:27,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-24 22:44:27,108 INFO L87 Difference]: Start difference. First operand 19484 states and 29601 transitions. Second operand 9 states. [2018-10-24 22:44:31,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:44:31,331 INFO L93 Difference]: Finished difference Result 74579 states and 127001 transitions. [2018-10-24 22:44:31,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:44:31,332 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 281 [2018-10-24 22:44:31,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:44:31,716 INFO L225 Difference]: With dead ends: 74579 [2018-10-24 22:44:31,716 INFO L226 Difference]: Without dead ends: 55520 [2018-10-24 22:44:31,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 562 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-10-24 22:44:31,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55520 states. [2018-10-24 22:44:33,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55520 to 54976. [2018-10-24 22:44:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54976 states. [2018-10-24 22:44:33,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54976 states to 54976 states and 85648 transitions. [2018-10-24 22:44:33,879 INFO L78 Accepts]: Start accepts. Automaton has 54976 states and 85648 transitions. Word has length 281 [2018-10-24 22:44:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:44:33,879 INFO L481 AbstractCegarLoop]: Abstraction has 54976 states and 85648 transitions. [2018-10-24 22:44:33,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 22:44:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 54976 states and 85648 transitions. [2018-10-24 22:44:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-24 22:44:34,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:44:34,054 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:44:34,055 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:44:34,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:34,055 INFO L82 PathProgramCache]: Analyzing trace with hash 267997470, now seen corresponding path program 1 times [2018-10-24 22:44:34,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:44:34,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:34,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:34,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:34,056 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:44:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 175 proven. 8 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 22:44:34,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:34,431 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:34,431 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-10-24 22:44:34,432 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [342], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:34,438 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:34,438 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:44:40,236 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:44:40,237 INFO L272 AbstractInterpreter]: Visited 162 different actions 650 times. Merged at 8 different actions 38 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-24 22:44:40,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:40,247 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:44:40,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:40,247 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:44:40,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:40,256 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:44:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:40,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:44:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-24 22:44:41,065 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:44:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 175 proven. 8 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 22:44:41,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:44:41,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-10-24 22:44:41,363 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:44:41,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 22:44:41,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 22:44:41,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:44:41,365 INFO L87 Difference]: Start difference. First operand 54976 states and 85648 transitions. Second operand 8 states. [2018-10-24 22:44:50,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:44:50,136 INFO L93 Difference]: Finished difference Result 194551 states and 358691 transitions. [2018-10-24 22:44:50,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-24 22:44:50,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 313 [2018-10-24 22:44:50,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:44:51,535 INFO L225 Difference]: With dead ends: 194551 [2018-10-24 22:44:51,536 INFO L226 Difference]: Without dead ends: 140000 [2018-10-24 22:44:51,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 646 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2018-10-24 22:44:51,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140000 states. [2018-10-24 22:44:56,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140000 to 133967. [2018-10-24 22:44:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133967 states. [2018-10-24 22:44:57,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133967 states to 133967 states and 194994 transitions. [2018-10-24 22:44:57,129 INFO L78 Accepts]: Start accepts. Automaton has 133967 states and 194994 transitions. Word has length 313 [2018-10-24 22:44:57,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:44:57,130 INFO L481 AbstractCegarLoop]: Abstraction has 133967 states and 194994 transitions. [2018-10-24 22:44:57,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 22:44:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 133967 states and 194994 transitions. [2018-10-24 22:44:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-24 22:44:57,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:44:57,407 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:44:57,407 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:44:57,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:57,408 INFO L82 PathProgramCache]: Analyzing trace with hash 792093393, now seen corresponding path program 1 times [2018-10-24 22:44:57,408 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:44:57,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:57,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:44:57,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:44:57,412 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:44:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:44:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 195 proven. 75 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-24 22:44:57,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:57,759 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:57,759 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 335 with the following transitions: [2018-10-24 22:44:57,759 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [315], [320], [322], [323], [327], [331], [335], [339], [342], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:57,765 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:57,766 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:45:02,520 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:45:02,520 INFO L272 AbstractInterpreter]: Visited 159 different actions 475 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-24 22:45:02,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:45:02,526 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:45:02,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:45:02,526 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:45:02,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:45:02,535 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:45:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:45:02,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:45:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-10-24 22:45:02,886 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:45:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 195 proven. 75 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-24 22:45:03,389 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:45:03,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2018-10-24 22:45:03,390 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:45:03,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 22:45:03,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 22:45:03,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-10-24 22:45:03,391 INFO L87 Difference]: Start difference. First operand 133967 states and 194994 transitions. Second operand 10 states. [2018-10-24 22:45:23,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:45:23,522 INFO L93 Difference]: Finished difference Result 439369 states and 741852 transitions. [2018-10-24 22:45:23,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-24 22:45:23,523 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 334 [2018-10-24 22:45:23,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:45:26,676 INFO L225 Difference]: With dead ends: 439369 [2018-10-24 22:45:26,676 INFO L226 Difference]: Without dead ends: 305827 [2018-10-24 22:45:27,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 705 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=646, Invalid=2660, Unknown=0, NotChecked=0, Total=3306 [2018-10-24 22:45:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305827 states. [2018-10-24 22:45:35,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305827 to 291601. [2018-10-24 22:45:35,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291601 states. [2018-10-24 22:45:36,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291601 states to 291601 states and 396860 transitions. [2018-10-24 22:45:36,586 INFO L78 Accepts]: Start accepts. Automaton has 291601 states and 396860 transitions. Word has length 334 [2018-10-24 22:45:36,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:45:36,587 INFO L481 AbstractCegarLoop]: Abstraction has 291601 states and 396860 transitions. [2018-10-24 22:45:36,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 22:45:36,587 INFO L276 IsEmpty]: Start isEmpty. Operand 291601 states and 396860 transitions. [2018-10-24 22:45:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-24 22:45:36,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:45:36,894 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 22:45:36,894 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:45:36,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:45:36,895 INFO L82 PathProgramCache]: Analyzing trace with hash 988021279, now seen corresponding path program 1 times [2018-10-24 22:45:36,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:45:36,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:45:36,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:45:36,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:45:36,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:45:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:45:37,508 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 194 proven. 8 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-10-24 22:45:37,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:45:37,509 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:45:37,509 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 347 with the following transitions: [2018-10-24 22:45:37,514 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [342], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:45:37,519 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:45:37,519 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:45:40,752 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:45:40,753 INFO L272 AbstractInterpreter]: Visited 159 different actions 479 times. Merged at 7 different actions 25 times. Widened at 1 different actions 1 times. Found 3 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:45:40,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:45:40,759 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:45:40,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:45:40,759 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:45:40,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:45:40,768 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:45:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:45:41,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:45:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 273 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 22:45:41,207 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:45:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 273 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 22:45:41,689 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:45:41,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-10-24 22:45:41,689 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:45:41,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 22:45:41,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 22:45:41,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:45:41,691 INFO L87 Difference]: Start difference. First operand 291601 states and 396860 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 22:45:55,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-24 22:45:55,376 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:45:55,384 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:45:55,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:45:55 BoogieIcfgContainer [2018-10-24 22:45:55,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:45:55,385 INFO L168 Benchmark]: Toolchain (without parser) took 218985.33 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -932.2 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:55,386 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:45:55,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1231.02 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:55,388 INFO L168 Benchmark]: Boogie Procedure Inliner took 331.40 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 701.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -827.3 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:55,389 INFO L168 Benchmark]: Boogie Preprocessor took 159.38 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:55,389 INFO L168 Benchmark]: RCFGBuilder took 5291.79 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 257.4 MB). Peak memory consumption was 257.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:45:55,390 INFO L168 Benchmark]: TraceAbstraction took 211966.90 ms. Allocated memory was 2.2 GB in the beginning and 4.3 GB in the end (delta: 2.1 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -460.5 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-10-24 22:45:55,398 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1231.02 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 331.40 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 701.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -827.3 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.38 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5291.79 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 257.4 MB). Peak memory consumption was 257.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211966.90 ms. Allocated memory was 2.2 GB in the beginning and 4.3 GB in the end (delta: 2.1 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -460.5 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1473]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1473). Cancelled while BasicCegarLoop was constructing difference of abstraction (291601states) and FLOYD_HOARE automaton (currently 46 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (502471 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 211.8s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 147.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3486 SDtfs, 18053 SDslu, 4320 SDs, 0 SdLazy, 35394 SolverSat, 6439 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 4454 GetRequests, 4205 SyntacticMatches, 9 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291601occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 28.5s AbstIntTime, 9 AbstIntIterations, 2 AbstIntStrong, 0.9989413079532808 AbsIntWeakeningRatio, 0.3253333333333333 AbsIntAvgWeakeningVarsNumRemoved, 27.136 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 18.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 21226 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 4438 NumberOfCodeBlocks, 4438 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6284 ConstructedInterpolants, 0 QuantifiedInterpolants, 3400807 SizeOfPredicates, 32 NumberOfNonLiveVariables, 8535 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 3486/3716 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown