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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:50:22,664 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:50:22,667 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:50:22,685 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:50:22,686 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:50:22,687 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:50:22,688 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:50:22,690 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:50:22,692 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:50:22,693 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:50:22,694 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:50:22,694 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:50:22,695 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:50:22,696 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:50:22,697 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:50:22,698 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:50:22,698 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:50:22,700 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:50:22,705 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:50:22,707 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:50:22,712 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:50:22,713 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:50:22,715 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:50:22,715 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:50:22,715 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:50:22,719 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:50:22,720 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:50:22,721 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:50:22,721 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:50:22,725 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:50:22,725 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:50:22,726 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:50:22,726 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:50:22,726 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:50:22,729 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:50:22,729 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:50:22,730 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:50:22,757 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:50:22,757 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:50:22,758 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:50:22,758 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:50:22,758 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:50:22,758 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:50:22,759 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:50:22,759 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:50:22,759 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:50:22,759 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:50:22,759 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:50:22,759 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:50:22,760 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:50:22,760 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:50:22,761 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:50:22,761 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:50:22,761 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:50:22,761 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:50:22,761 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:50:22,761 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:50:22,762 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:50:22,762 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:50:22,762 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:50:22,762 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:50:22,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:50:22,763 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:50:22,763 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:50:22,763 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:50:22,763 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:50:22,763 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:50:22,764 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:50:22,764 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:50:22,764 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:50:22,764 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:50:22,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:50:22,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:50:22,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:50:22,832 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:50:22,833 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:50:22,834 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label05_true-unreach-call.c [2018-11-07 15:50:22,899 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f15c20a/95faaaa0c9f74720b7a8cc168b0127c2/FLAG0b6c7eb1b [2018-11-07 15:50:23,800 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:50:23,801 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label05_true-unreach-call.c [2018-11-07 15:50:23,843 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f15c20a/95faaaa0c9f74720b7a8cc168b0127c2/FLAG0b6c7eb1b [2018-11-07 15:50:23,859 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86f15c20a/95faaaa0c9f74720b7a8cc168b0127c2 [2018-11-07 15:50:23,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:50:23,874 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:50:23,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:50:23,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:50:23,880 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:50:23,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:50:23" (1/1) ... [2018-11-07 15:50:23,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e745eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:23, skipping insertion in model container [2018-11-07 15:50:23,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:50:23" (1/1) ... [2018-11-07 15:50:23,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:50:24,135 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:50:26,190 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:50:26,196 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:50:27,354 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:50:27,418 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:50:27,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:27 WrapperNode [2018-11-07 15:50:27,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:50:27,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:50:27,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:50:27,420 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:50:27,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:27" (1/1) ... [2018-11-07 15:50:27,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:27" (1/1) ... [2018-11-07 15:50:27,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:50:27,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:50:27,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:50:27,922 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:50:27,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:27" (1/1) ... [2018-11-07 15:50:27,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:27" (1/1) ... [2018-11-07 15:50:28,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:27" (1/1) ... [2018-11-07 15:50:28,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:27" (1/1) ... [2018-11-07 15:50:28,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:27" (1/1) ... [2018-11-07 15:50:28,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:27" (1/1) ... [2018-11-07 15:50:28,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:27" (1/1) ... [2018-11-07 15:50:28,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:50:28,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:50:28,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:50:28,419 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:50:28,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:27" (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 15:50:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:50:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:50:28,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:50:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 15:50:28,486 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 15:50:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 15:50:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 15:50:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 15:50:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 15:50:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:50:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:50:28,488 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:50:28,488 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:50:28,489 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:50:28,489 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:50:28,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:50:28,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:50:28,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:50:28,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:50:43,296 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:50:43,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:43 BoogieIcfgContainer [2018-11-07 15:50:43,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:50:43,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:50:43,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:50:43,301 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:50:43,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:50:23" (1/3) ... [2018-11-07 15:50:43,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4edf46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:43, skipping insertion in model container [2018-11-07 15:50:43,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:50:27" (2/3) ... [2018-11-07 15:50:43,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4edf46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:50:43, skipping insertion in model container [2018-11-07 15:50:43,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:50:43" (3/3) ... [2018-11-07 15:50:43,305 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label05_true-unreach-call.c [2018-11-07 15:50:43,315 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:50:43,325 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:50:43,344 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:50:43,396 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:50:43,396 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:50:43,397 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:50:43,397 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:50:43,397 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:50:43,397 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:50:43,397 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:50:43,397 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:50:43,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 15:50:43,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-07 15:50:43,474 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:50:43,475 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] [2018-11-07 15:50:43,477 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:50:43,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:50:43,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1860482762, now seen corresponding path program 1 times [2018-11-07 15:50:43,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:50:43,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:43,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:50:43,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:43,530 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:50:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:50:44,030 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:50:44,155 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 15:50:44,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:50:44,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:50:44,159 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:50:44,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:50:44,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:50:44,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:50:44,189 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 15:50:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:50:56,710 INFO L93 Difference]: Finished difference Result 4995 states and 9413 transitions. [2018-11-07 15:50:56,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:50:56,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-11-07 15:50:56,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:50:56,755 INFO L225 Difference]: With dead ends: 4995 [2018-11-07 15:50:56,756 INFO L226 Difference]: Without dead ends: 3215 [2018-11-07 15:50:56,768 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:50:56,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2018-11-07 15:50:56,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3213. [2018-11-07 15:50:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3213 states. [2018-11-07 15:50:56,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 5833 transitions. [2018-11-07 15:50:56,974 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 5833 transitions. Word has length 67 [2018-11-07 15:50:56,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:50:56,975 INFO L480 AbstractCegarLoop]: Abstraction has 3213 states and 5833 transitions. [2018-11-07 15:50:56,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:50:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 5833 transitions. [2018-11-07 15:50:56,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 15:50:56,985 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:50:56,985 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:50:56,985 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:50:56,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:50:56,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1310005478, now seen corresponding path program 1 times [2018-11-07 15:50:56,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:50:56,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:56,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:50:56,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:50:56,989 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:50:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:50:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:50:57,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:50:57,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:50:57,452 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:50:57,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:50:57,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:50:57,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:50:57,455 INFO L87 Difference]: Start difference. First operand 3213 states and 5833 transitions. Second operand 5 states. [2018-11-07 15:51:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:51:27,363 INFO L93 Difference]: Finished difference Result 12250 states and 22705 transitions. [2018-11-07 15:51:27,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:51:27,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-11-07 15:51:27,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:51:27,414 INFO L225 Difference]: With dead ends: 12250 [2018-11-07 15:51:27,414 INFO L226 Difference]: Without dead ends: 9043 [2018-11-07 15:51:27,430 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:51:27,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9043 states. [2018-11-07 15:51:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9043 to 8962. [2018-11-07 15:51:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8962 states. [2018-11-07 15:51:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8962 states to 8962 states and 13239 transitions. [2018-11-07 15:51:27,691 INFO L78 Accepts]: Start accepts. Automaton has 8962 states and 13239 transitions. Word has length 141 [2018-11-07 15:51:27,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:51:27,692 INFO L480 AbstractCegarLoop]: Abstraction has 8962 states and 13239 transitions. [2018-11-07 15:51:27,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:51:27,693 INFO L276 IsEmpty]: Start isEmpty. Operand 8962 states and 13239 transitions. [2018-11-07 15:51:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 15:51:27,704 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:51:27,704 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:51:27,704 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:51:27,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:51:27,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1307216630, now seen corresponding path program 1 times [2018-11-07 15:51:27,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:51:27,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:27,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:51:27,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:27,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:51:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:51:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:51:28,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:51:28,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:51:28,188 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:51:28,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:51:28,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:51:28,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:51:28,190 INFO L87 Difference]: Start difference. First operand 8962 states and 13239 transitions. Second operand 6 states. [2018-11-07 15:51:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:51:42,247 INFO L93 Difference]: Finished difference Result 27252 states and 40792 transitions. [2018-11-07 15:51:42,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 15:51:42,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-11-07 15:51:42,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:51:42,338 INFO L225 Difference]: With dead ends: 27252 [2018-11-07 15:51:42,338 INFO L226 Difference]: Without dead ends: 18296 [2018-11-07 15:51:42,366 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 15:51:42,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18296 states. [2018-11-07 15:51:42,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18296 to 17994. [2018-11-07 15:51:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17994 states. [2018-11-07 15:51:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17994 states to 17994 states and 26025 transitions. [2018-11-07 15:51:42,832 INFO L78 Accepts]: Start accepts. Automaton has 17994 states and 26025 transitions. Word has length 149 [2018-11-07 15:51:42,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:51:42,833 INFO L480 AbstractCegarLoop]: Abstraction has 17994 states and 26025 transitions. [2018-11-07 15:51:42,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:51:42,833 INFO L276 IsEmpty]: Start isEmpty. Operand 17994 states and 26025 transitions. [2018-11-07 15:51:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-07 15:51:42,836 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:51:42,836 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:51:42,837 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:51:42,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:51:42,837 INFO L82 PathProgramCache]: Analyzing trace with hash 899038028, now seen corresponding path program 1 times [2018-11-07 15:51:42,837 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:51:42,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:42,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:51:42,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:51:42,839 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:51:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:51:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:51:43,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:51:43,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:51:43,174 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:51:43,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:51:43,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:51:43,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:51:43,176 INFO L87 Difference]: Start difference. First operand 17994 states and 26025 transitions. Second operand 5 states. [2018-11-07 15:52:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:52:03,029 INFO L93 Difference]: Finished difference Result 55248 states and 81599 transitions. [2018-11-07 15:52:03,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:52:03,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-11-07 15:52:03,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:52:03,173 INFO L225 Difference]: With dead ends: 55248 [2018-11-07 15:52:03,173 INFO L226 Difference]: Without dead ends: 37260 [2018-11-07 15:52:03,224 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 15:52:03,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37260 states. [2018-11-07 15:52:03,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37260 to 36332. [2018-11-07 15:52:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36332 states. [2018-11-07 15:52:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36332 states to 36332 states and 47855 transitions. [2018-11-07 15:52:04,023 INFO L78 Accepts]: Start accepts. Automaton has 36332 states and 47855 transitions. Word has length 169 [2018-11-07 15:52:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:52:04,023 INFO L480 AbstractCegarLoop]: Abstraction has 36332 states and 47855 transitions. [2018-11-07 15:52:04,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:52:04,024 INFO L276 IsEmpty]: Start isEmpty. Operand 36332 states and 47855 transitions. [2018-11-07 15:52:04,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 15:52:04,029 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:52:04,029 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:52:04,030 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:52:04,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:52:04,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1152657023, now seen corresponding path program 1 times [2018-11-07 15:52:04,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:52:04,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:52:04,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:52:04,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:52:04,031 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:52:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:52:04,369 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:52:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:52:04,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:52:04,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:52:04,815 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:52:04,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:52:04,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:52:04,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:52:04,816 INFO L87 Difference]: Start difference. First operand 36332 states and 47855 transitions. Second operand 6 states. [2018-11-07 15:52:20,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:52:20,610 INFO L93 Difference]: Finished difference Result 86444 states and 117379 transitions. [2018-11-07 15:52:20,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:52:20,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 232 [2018-11-07 15:52:20,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:52:20,821 INFO L225 Difference]: With dead ends: 86444 [2018-11-07 15:52:20,822 INFO L226 Difference]: Without dead ends: 50118 [2018-11-07 15:52:20,903 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:52:20,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50118 states. [2018-11-07 15:52:21,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50118 to 49168. [2018-11-07 15:52:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49168 states. [2018-11-07 15:52:21,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49168 states to 49168 states and 63615 transitions. [2018-11-07 15:52:21,803 INFO L78 Accepts]: Start accepts. Automaton has 49168 states and 63615 transitions. Word has length 232 [2018-11-07 15:52:21,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:52:21,803 INFO L480 AbstractCegarLoop]: Abstraction has 49168 states and 63615 transitions. [2018-11-07 15:52:21,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:52:21,804 INFO L276 IsEmpty]: Start isEmpty. Operand 49168 states and 63615 transitions. [2018-11-07 15:52:21,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-11-07 15:52:21,808 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:52:21,808 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:52:21,809 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:52:21,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:52:21,809 INFO L82 PathProgramCache]: Analyzing trace with hash -419369166, now seen corresponding path program 1 times [2018-11-07 15:52:21,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:52:21,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:52:21,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:52:21,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:52:21,811 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:52:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:52:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:52:22,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:52:22,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:52:22,136 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:52:22,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:52:22,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:52:22,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:52:22,139 INFO L87 Difference]: Start difference. First operand 49168 states and 63615 transitions. Second operand 4 states. [2018-11-07 15:52:38,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:52:38,383 INFO L93 Difference]: Finished difference Result 179561 states and 250457 transitions. [2018-11-07 15:52:38,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:52:38,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 279 [2018-11-07 15:52:38,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:52:38,819 INFO L225 Difference]: With dead ends: 179561 [2018-11-07 15:52:38,819 INFO L226 Difference]: Without dead ends: 130399 [2018-11-07 15:52:38,985 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 15:52:39,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130399 states. [2018-11-07 15:52:40,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130399 to 130026. [2018-11-07 15:52:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130026 states. [2018-11-07 15:52:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130026 states to 130026 states and 172363 transitions. [2018-11-07 15:52:41,324 INFO L78 Accepts]: Start accepts. Automaton has 130026 states and 172363 transitions. Word has length 279 [2018-11-07 15:52:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:52:41,329 INFO L480 AbstractCegarLoop]: Abstraction has 130026 states and 172363 transitions. [2018-11-07 15:52:41,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:52:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 130026 states and 172363 transitions. [2018-11-07 15:52:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2018-11-07 15:52:41,364 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:52:41,365 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:52:41,365 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:52:41,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:52:41,365 INFO L82 PathProgramCache]: Analyzing trace with hash -555806953, now seen corresponding path program 1 times [2018-11-07 15:52:41,366 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:52:41,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:52:41,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:52:41,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:52:41,367 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:52:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:52:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 395 proven. 98 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-07 15:52:43,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:52:43,523 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:52:43,524 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 596 with the following transitions: [2018-11-07 15:52:43,527 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5650], [5658], [5662], [5664], [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], [5877], [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], [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], [6420], [6421], [6425], [6429], [6432], [6437], [6439], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 15:52:43,601 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:52:43,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:52:44,565 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:52:45,024 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:52:45,026 INFO L272 AbstractInterpreter]: Visited 221 different actions 221 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 15:52:45,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:52:45,079 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:52:46,586 INFO L227 lantSequenceWeakener]: Weakened 581 states. On average, predicates are now at 75.33% of their original sizes. [2018-11-07 15:52:46,587 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:52:46,787 INFO L415 sIntCurrentIteration]: We unified 594 AI predicates to 594 [2018-11-07 15:52:46,788 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:52:46,789 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:52:46,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 15:52:46,789 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:52:46,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:52:46,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:52:46,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:52:46,792 INFO L87 Difference]: Start difference. First operand 130026 states and 172363 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown