java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label32_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 07:00:08,385 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 07:00:08,387 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 07:00:08,407 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 07:00:08,407 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 07:00:08,409 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 07:00:08,410 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 07:00:08,412 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 07:00:08,416 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 07:00:08,417 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 07:00:08,419 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 07:00:08,419 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 07:00:08,420 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 07:00:08,422 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 07:00:08,423 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 07:00:08,430 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 07:00:08,431 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 07:00:08,435 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 07:00:08,440 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 07:00:08,443 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 07:00:08,445 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 07:00:08,446 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 07:00:08,451 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 07:00:08,452 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 07:00:08,452 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 07:00:08,453 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 07:00:08,453 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 07:00:08,454 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 07:00:08,455 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 07:00:08,457 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 07:00:08,457 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 07:00:08,458 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 07:00:08,458 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 07:00:08,458 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 07:00:08,459 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 07:00:08,460 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 07:00:08,460 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 07:00:08,481 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 07:00:08,481 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 07:00:08,482 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 07:00:08,482 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 07:00:08,482 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 07:00:08,483 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 07:00:08,483 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 07:00:08,483 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 07:00:08,483 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 07:00:08,483 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 07:00:08,484 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 07:00:08,484 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 07:00:08,484 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 07:00:08,484 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 07:00:08,485 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 07:00:08,485 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 07:00:08,485 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 07:00:08,486 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 07:00:08,486 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 07:00:08,486 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 07:00:08,487 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 07:00:08,487 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 07:00:08,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 07:00:08,487 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 07:00:08,487 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 07:00:08,487 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 07:00:08,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 07:00:08,488 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 07:00:08,488 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 07:00:08,488 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 07:00:08,488 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 07:00:08,489 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 07:00:08,489 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 07:00:08,489 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 07:00:08,489 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 07:00:08,489 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 07:00:08,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 07:00:08,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 07:00:08,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 07:00:08,554 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 07:00:08,554 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 07:00:08,555 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label32_false-unreach-call.c [2018-11-07 07:00:08,627 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43dd223e0/80fa9c3e25f24c798fb26a264a22ff97/FLAGb751a8b52 [2018-11-07 07:00:09,462 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 07:00:09,463 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label32_false-unreach-call.c [2018-11-07 07:00:09,514 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43dd223e0/80fa9c3e25f24c798fb26a264a22ff97/FLAGb751a8b52 [2018-11-07 07:00:09,535 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43dd223e0/80fa9c3e25f24c798fb26a264a22ff97 [2018-11-07 07:00:09,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 07:00:09,549 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 07:00:09,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 07:00:09,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 07:00:09,555 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 07:00:09,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:00:09" (1/1) ... [2018-11-07 07:00:09,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386f4038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:09, skipping insertion in model container [2018-11-07 07:00:09,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:00:09" (1/1) ... [2018-11-07 07:00:09,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 07:00:09,831 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 07:00:12,028 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:00:12,037 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 07:00:13,276 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 07:00:13,332 INFO L193 MainTranslator]: Completed translation [2018-11-07 07:00:13,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:13 WrapperNode [2018-11-07 07:00:13,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 07:00:13,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 07:00:13,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 07:00:13,334 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 07:00:13,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:13" (1/1) ... [2018-11-07 07:00:13,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:13" (1/1) ... [2018-11-07 07:00:13,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 07:00:13,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 07:00:13,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 07:00:13,889 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 07:00:13,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:13" (1/1) ... [2018-11-07 07:00:13,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:13" (1/1) ... [2018-11-07 07:00:13,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:13" (1/1) ... [2018-11-07 07:00:13,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:13" (1/1) ... [2018-11-07 07:00:14,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:13" (1/1) ... [2018-11-07 07:00:14,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:13" (1/1) ... [2018-11-07 07:00:14,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:13" (1/1) ... [2018-11-07 07:00:14,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 07:00:14,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 07:00:14,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 07:00:14,344 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 07:00:14,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 07:00:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 07:00:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 07:00:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 07:00:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 07:00:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 07:00:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 07:00:14,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 07:00:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 07:00:14,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 07:00:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 07:00:14,421 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 07:00:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 07:00:14,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 07:00:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 07:00:14,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 07:00:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 07:00:14,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 07:00:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 07:00:14,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 07:00:28,325 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 07:00:28,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:00:28 BoogieIcfgContainer [2018-11-07 07:00:28,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 07:00:28,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 07:00:28,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 07:00:28,331 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 07:00:28,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:00:09" (1/3) ... [2018-11-07 07:00:28,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb53f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:00:28, skipping insertion in model container [2018-11-07 07:00:28,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:00:13" (2/3) ... [2018-11-07 07:00:28,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb53f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:00:28, skipping insertion in model container [2018-11-07 07:00:28,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:00:28" (3/3) ... [2018-11-07 07:00:28,334 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label32_false-unreach-call.c [2018-11-07 07:00:28,345 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 07:00:28,356 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 07:00:28,373 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 07:00:28,435 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 07:00:28,436 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 07:00:28,436 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 07:00:28,436 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 07:00:28,436 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 07:00:28,436 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 07:00:28,436 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 07:00:28,436 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 07:00:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 07:00:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-07 07:00:28,522 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:00:28,524 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] [2018-11-07 07:00:28,526 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:00:28,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:00:28,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1445430796, now seen corresponding path program 1 times [2018-11-07 07:00:28,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:00:28,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:00:28,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:00:28,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:00:28,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:00:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:00:29,020 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 07:00:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:00:29,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:00:29,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 07:00:29,035 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:00:29,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 07:00:29,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 07:00:29,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 07:00:29,062 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-07 07:00:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:00:50,192 INFO L93 Difference]: Finished difference Result 6510 states and 12381 transitions. [2018-11-07 07:00:50,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 07:00:50,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-07 07:00:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:00:50,266 INFO L225 Difference]: With dead ends: 6510 [2018-11-07 07:00:50,266 INFO L226 Difference]: Without dead ends: 4726 [2018-11-07 07:00:50,284 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 07:00:50,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2018-11-07 07:00:50,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4687. [2018-11-07 07:00:50,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4687 states. [2018-11-07 07:00:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 7413 transitions. [2018-11-07 07:00:50,682 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 7413 transitions. Word has length 26 [2018-11-07 07:00:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:00:50,683 INFO L480 AbstractCegarLoop]: Abstraction has 4687 states and 7413 transitions. [2018-11-07 07:00:50,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 07:00:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 7413 transitions. [2018-11-07 07:00:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-07 07:00:50,692 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:00:50,692 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 07:00:50,694 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:00:50,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:00:50,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1775756567, now seen corresponding path program 1 times [2018-11-07 07:00:50,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:00:50,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:00:50,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:00:50,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:00:50,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:00:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:00:51,091 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:00:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:00:51,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:00:51,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:00:51,479 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:00:51,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:00:51,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:00:51,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:00:51,482 INFO L87 Difference]: Start difference. First operand 4687 states and 7413 transitions. Second operand 6 states. [2018-11-07 07:01:15,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:01:15,050 INFO L93 Difference]: Finished difference Result 17857 states and 28865 transitions. [2018-11-07 07:01:15,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 07:01:15,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-11-07 07:01:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:01:15,117 INFO L225 Difference]: With dead ends: 17857 [2018-11-07 07:01:15,118 INFO L226 Difference]: Without dead ends: 13176 [2018-11-07 07:01:15,139 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:01:15,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13176 states. [2018-11-07 07:01:15,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13176 to 13105. [2018-11-07 07:01:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13105 states. [2018-11-07 07:01:15,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13105 states to 13105 states and 18702 transitions. [2018-11-07 07:01:15,641 INFO L78 Accepts]: Start accepts. Automaton has 13105 states and 18702 transitions. Word has length 98 [2018-11-07 07:01:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:01:15,642 INFO L480 AbstractCegarLoop]: Abstraction has 13105 states and 18702 transitions. [2018-11-07 07:01:15,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:01:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 13105 states and 18702 transitions. [2018-11-07 07:01:15,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-07 07:01:15,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:01:15,647 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 07:01:15,647 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:01:15,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:01:15,648 INFO L82 PathProgramCache]: Analyzing trace with hash 818575424, now seen corresponding path program 1 times [2018-11-07 07:01:15,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:01:15,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:01:15,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:01:15,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:01:15,650 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:01:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:01:15,930 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:01:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:01:15,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:01:15,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:01:15,965 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:01:15,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:01:15,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:01:15,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:01:15,967 INFO L87 Difference]: Start difference. First operand 13105 states and 18702 transitions. Second operand 6 states. [2018-11-07 07:01:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:01:36,603 INFO L93 Difference]: Finished difference Result 43695 states and 64626 transitions. [2018-11-07 07:01:36,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 07:01:36,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-11-07 07:01:36,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:01:36,716 INFO L225 Difference]: With dead ends: 43695 [2018-11-07 07:01:36,717 INFO L226 Difference]: Without dead ends: 30596 [2018-11-07 07:01:36,764 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:01:36,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30596 states. [2018-11-07 07:01:37,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30596 to 30433. [2018-11-07 07:01:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30433 states. [2018-11-07 07:01:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30433 states to 30433 states and 42880 transitions. [2018-11-07 07:01:37,415 INFO L78 Accepts]: Start accepts. Automaton has 30433 states and 42880 transitions. Word has length 100 [2018-11-07 07:01:37,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:01:37,416 INFO L480 AbstractCegarLoop]: Abstraction has 30433 states and 42880 transitions. [2018-11-07 07:01:37,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:01:37,416 INFO L276 IsEmpty]: Start isEmpty. Operand 30433 states and 42880 transitions. [2018-11-07 07:01:37,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-07 07:01:37,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:01:37,425 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 07:01:37,426 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:01:37,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:01:37,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1174335449, now seen corresponding path program 1 times [2018-11-07 07:01:37,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:01:37,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:01:37,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:01:37,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:01:37,429 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:01:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:01:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:01:37,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:01:37,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:01:37,937 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:01:37,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:01:37,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:01:37,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:01:37,938 INFO L87 Difference]: Start difference. First operand 30433 states and 42880 transitions. Second operand 6 states. [2018-11-07 07:01:53,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:01:53,495 INFO L93 Difference]: Finished difference Result 92602 states and 135361 transitions. [2018-11-07 07:01:53,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 07:01:53,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-11-07 07:01:53,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:01:54,034 INFO L225 Difference]: With dead ends: 92602 [2018-11-07 07:01:54,034 INFO L226 Difference]: Without dead ends: 62175 [2018-11-07 07:01:54,095 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 07:01:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62175 states. [2018-11-07 07:01:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62175 to 61715. [2018-11-07 07:01:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61715 states. [2018-11-07 07:01:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61715 states to 61715 states and 86757 transitions. [2018-11-07 07:01:55,225 INFO L78 Accepts]: Start accepts. Automaton has 61715 states and 86757 transitions. Word has length 108 [2018-11-07 07:01:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:01:55,226 INFO L480 AbstractCegarLoop]: Abstraction has 61715 states and 86757 transitions. [2018-11-07 07:01:55,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:01:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 61715 states and 86757 transitions. [2018-11-07 07:01:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 07:01:55,229 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:01:55,230 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:01:55,230 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:01:55,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:01:55,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1464596079, now seen corresponding path program 1 times [2018-11-07 07:01:55,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:01:55,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:01:55,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:01:55,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:01:55,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:01:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:01:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:01:55,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:01:55,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 07:01:55,578 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:01:55,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 07:01:55,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 07:01:55,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 07:01:55,579 INFO L87 Difference]: Start difference. First operand 61715 states and 86757 transitions. Second operand 5 states. [2018-11-07 07:02:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:02:14,123 INFO L93 Difference]: Finished difference Result 187051 states and 273221 transitions. [2018-11-07 07:02:14,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 07:02:14,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-11-07 07:02:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:02:14,515 INFO L225 Difference]: With dead ends: 187051 [2018-11-07 07:02:14,515 INFO L226 Difference]: Without dead ends: 125342 [2018-11-07 07:02:14,639 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 07:02:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125342 states. [2018-11-07 07:02:17,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125342 to 124083. [2018-11-07 07:02:17,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124083 states. [2018-11-07 07:02:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124083 states to 124083 states and 162813 transitions. [2018-11-07 07:02:17,398 INFO L78 Accepts]: Start accepts. Automaton has 124083 states and 162813 transitions. Word has length 128 [2018-11-07 07:02:17,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:02:17,399 INFO L480 AbstractCegarLoop]: Abstraction has 124083 states and 162813 transitions. [2018-11-07 07:02:17,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 07:02:17,399 INFO L276 IsEmpty]: Start isEmpty. Operand 124083 states and 162813 transitions. [2018-11-07 07:02:17,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-07 07:02:17,402 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:02:17,403 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:02:17,403 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:02:17,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:02:17,403 INFO L82 PathProgramCache]: Analyzing trace with hash 404724510, now seen corresponding path program 1 times [2018-11-07 07:02:17,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:02:17,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:02:17,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:02:17,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:02:17,405 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:02:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:02:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:02:17,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:02:17,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 07:02:17,701 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:02:17,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 07:02:17,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 07:02:17,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 07:02:17,702 INFO L87 Difference]: Start difference. First operand 124083 states and 162813 transitions. Second operand 6 states. [2018-11-07 07:02:33,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:02:33,083 INFO L93 Difference]: Finished difference Result 280350 states and 387150 transitions. [2018-11-07 07:02:33,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 07:02:33,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2018-11-07 07:02:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:02:33,592 INFO L225 Difference]: With dead ends: 280350 [2018-11-07 07:02:33,593 INFO L226 Difference]: Without dead ends: 156273 [2018-11-07 07:02:33,785 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 07:02:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156273 states. [2018-11-07 07:02:36,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156273 to 155327. [2018-11-07 07:02:36,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155327 states. [2018-11-07 07:02:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155327 states to 155327 states and 204842 transitions. [2018-11-07 07:02:37,220 INFO L78 Accepts]: Start accepts. Automaton has 155327 states and 204842 transitions. Word has length 191 [2018-11-07 07:02:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:02:37,221 INFO L480 AbstractCegarLoop]: Abstraction has 155327 states and 204842 transitions. [2018-11-07 07:02:37,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 07:02:37,221 INFO L276 IsEmpty]: Start isEmpty. Operand 155327 states and 204842 transitions. [2018-11-07 07:02:37,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2018-11-07 07:02:37,240 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:02:37,241 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:02:37,241 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:02:37,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:02:37,242 INFO L82 PathProgramCache]: Analyzing trace with hash 853843109, now seen corresponding path program 1 times [2018-11-07 07:02:37,242 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:02:37,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:02:37,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:02:37,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:02:37,243 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:02:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:02:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 07:02:37,935 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 07:02:37,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 07:02:37,936 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 07:02:37,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 07:02:37,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 07:02:37,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 07:02:37,938 INFO L87 Difference]: Start difference. First operand 155327 states and 204842 transitions. Second operand 4 states. [2018-11-07 07:02:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 07:02:58,734 INFO L93 Difference]: Finished difference Result 436189 states and 603355 transitions. [2018-11-07 07:02:58,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 07:02:58,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 620 [2018-11-07 07:02:58,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 07:02:59,591 INFO L225 Difference]: With dead ends: 436189 [2018-11-07 07:02:59,591 INFO L226 Difference]: Without dead ends: 280868 [2018-11-07 07:02:59,836 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 07:03:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280868 states. [2018-11-07 07:03:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280868 to 280479. [2018-11-07 07:03:09,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280479 states. [2018-11-07 07:03:11,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280479 states to 280479 states and 371664 transitions. [2018-11-07 07:03:11,062 INFO L78 Accepts]: Start accepts. Automaton has 280479 states and 371664 transitions. Word has length 620 [2018-11-07 07:03:11,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 07:03:11,064 INFO L480 AbstractCegarLoop]: Abstraction has 280479 states and 371664 transitions. [2018-11-07 07:03:11,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 07:03:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 280479 states and 371664 transitions. [2018-11-07 07:03:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2018-11-07 07:03:11,138 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 07:03:11,139 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 07:03:11,139 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 07:03:11,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:03:11,140 INFO L82 PathProgramCache]: Analyzing trace with hash 982081139, now seen corresponding path program 1 times [2018-11-07 07:03:11,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 07:03:11,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:03:11,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:03:11,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 07:03:11,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 07:03:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:03:12,129 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 07:03:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 185 proven. 421 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-07 07:03:13,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:03:13,893 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 07:03:13,894 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 967 with the following transitions: [2018-11-07 07:03:13,904 INFO L202 CegarAbsIntRunner]: [0], [1], [4196], [4200], [4204], [4208], [4212], [4216], [4220], [4224], [4228], [4232], [4236], [4240], [4244], [4248], [4252], [4256], [4260], [4264], [4268], [4279], [4290], [4294], [4297], [4298], [4309], [4313], [4317], [4321], [4325], [4329], [4333], [4337], [4341], [4345], [4349], [4353], [4357], [4361], [4365], [4369], [4373], [4377], [4381], [4385], [4396], [4400], [4404], [4408], [4412], [4416], [4420], [4431], [4435], [4439], [4443], [4454], [4458], [4462], [4466], [4470], [4474], [4478], [4482], [4486], [4490], [4494], [4498], [4502], [4506], [4510], [4514], [4518], [4522], [4526], [4530], [4534], [4538], [4542], [4553], [4557], [4561], [4565], [4569], [4573], [4577], [4581], [4585], [4589], [4593], [4597], [4601], [4605], [4609], [4620], [4624], [4628], [4632], [4636], [4647], [4651], [4655], [4659], [4663], [4667], [4671], [4675], [4679], [4690], [4694], [4698], [4709], [4713], [4717], [4721], [4725], [4729], [4733], [4737], [4741], [4745], [4749], [4753], [4764], [4768], [4772], [4776], [4780], [4784], [4788], [4792], [4803], [4807], [4811], [4815], [4819], [4823], [4827], [4831], [4835], [4839], [4843], [4847], [4858], [4862], [4873], [4877], [4881], [4885], [4896], [4900], [4904], [4908], [4912], [4916], [4920], [4924], [4935], [4939], [4943], [4954], [4958], [4962], [4966], [4970], [4974], [4978], [4982], [4986], [4990], [4994], [4998], [5002], [5006], [5010], [5014], [5018], [5022], [5026], [5030], [5034], [5038], [5042], [5046], [5050], [5054], [5058], [5062], [5066], [5070], [5074], [5078], [5082], [5086], [5090], [5094], [5105], [5109], [5120], [5124], [5128], [5132], [5136], [5140], [5143], [5226], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5334], [5336], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6007], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6604], [6608], [6619], [6623], [6634], [6645], [6649], [6653], [6657], [6661], [6665], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6712], [6716], [6727], [6731], [6735], [6739], [6743], [6747], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6801], [6802], [6806], [6810], [6816], [6820], [6822], [6835], [6836], [6837], [6838], [6839], [6841], [6842] [2018-11-07 07:03:14,004 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 07:03:14,005 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 07:03:17,944 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 07:03:17,946 INFO L272 AbstractInterpreter]: Visited 506 different actions 1520 times. Merged at 10 different actions 26 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 07:03:17,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 07:03:17,998 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 07:03:17,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 07:03:17,999 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 07:03:18,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 07:03:18,017 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 07:03:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 07:03:18,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 07:03:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-07 07:03:19,536 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 07:03:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-07 07:03:21,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 07:03:21,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2018-11-07 07:03:21,702 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 07:03:21,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 07:03:21,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 07:03:21,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-07 07:03:21,706 INFO L87 Difference]: Start difference. First operand 280479 states and 371664 transitions. Second operand 11 states. Received shutdown request... [2018-11-07 07:03:46,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 07:03:46,943 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 07:03:46,948 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 07:03:46,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:03:46 BoogieIcfgContainer [2018-11-07 07:03:46,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 07:03:46,949 INFO L168 Benchmark]: Toolchain (without parser) took 217400.91 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 07:03:46,950 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-07 07:03:46,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3782.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 980.7 MB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. [2018-11-07 07:03:46,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 554.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 826.3 MB). Free memory was 980.7 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-07 07:03:46,953 INFO L168 Benchmark]: Boogie Preprocessor took 454.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2018-11-07 07:03:46,954 INFO L168 Benchmark]: RCFGBuilder took 13982.31 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 169.3 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 505.7 MB). Peak memory consumption was 675.0 MB. Max. memory is 7.1 GB. [2018-11-07 07:03:46,954 INFO L168 Benchmark]: TraceAbstraction took 198621.25 ms. Allocated memory was 2.5 GB in the beginning and 4.8 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 775.5 MB. Max. memory is 7.1 GB. [2018-11-07 07:03:46,960 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 3782.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 980.7 MB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 554.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 826.3 MB). Free memory was 980.7 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 454.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13982.31 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 169.3 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 505.7 MB). Peak memory consumption was 675.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 198621.25 ms. Allocated memory was 2.5 GB in the beginning and 4.8 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 775.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was constructing difference of abstraction (280479states) and FLOYD_HOARE automaton (currently 17 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (188199 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 198.5s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 164.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5451 SDtfs, 58345 SDslu, 5837 SDs, 0 SdLazy, 90728 SolverSat, 20323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 127.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2032 GetRequests, 1961 SyntacticMatches, 9 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=280479occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 20.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 3327 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 3203 NumberOfCodeBlocks, 3203 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4159 ConstructedInterpolants, 0 QuantifiedInterpolants, 7303967 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1272 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 1576/2001 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown