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/Problem18_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:45:43,964 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:45:43,966 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:45:43,978 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:45:43,978 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:45:43,979 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:45:43,981 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:45:43,982 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:45:43,984 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:45:43,985 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:45:43,986 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:45:43,986 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:45:43,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:45:43,988 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:45:43,989 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:45:43,990 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:45:43,990 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:45:43,992 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:45:43,994 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:45:43,996 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:45:43,997 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:45:43,998 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:45:44,000 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:45:44,001 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:45:44,001 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:45:44,002 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:45:44,003 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:45:44,004 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:45:44,007 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:45:44,008 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:45:44,008 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:45:44,009 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:45:44,009 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:45:44,009 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:45:44,012 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:45:44,013 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:45:44,013 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 15:45:44,042 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:45:44,042 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:45:44,044 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:45:44,044 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:45:44,044 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:45:44,045 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:45:44,045 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:45:44,045 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:45:44,045 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:45:44,046 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:45:44,046 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:45:44,046 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:45:44,047 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:45:44,047 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:45:44,047 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:45:44,047 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:45:44,047 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:45:44,047 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:45:44,049 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:45:44,049 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:45:44,049 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:45:44,049 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:45:44,050 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:45:44,050 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:45:44,050 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:45:44,050 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:45:44,050 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:45:44,051 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:45:44,051 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:45:44,051 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:45:44,051 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:45:44,052 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:45:44,052 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:45:44,052 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:45:44,103 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:45:44,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:45:44,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:45:44,121 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:45:44,122 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:45:44,123 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c [2018-11-07 15:45:44,185 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58009b6ce/2ce977eb184e4905b5fe19726f40d26c/FLAG258fbd4ee [2018-11-07 15:45:44,889 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:45:44,890 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c [2018-11-07 15:45:44,919 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58009b6ce/2ce977eb184e4905b5fe19726f40d26c/FLAG258fbd4ee [2018-11-07 15:45:44,940 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58009b6ce/2ce977eb184e4905b5fe19726f40d26c [2018-11-07 15:45:44,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:45:44,955 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:45:44,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:45:44,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:45:44,963 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:45:44,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:45:44" (1/1) ... [2018-11-07 15:45:44,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c37f2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:44, skipping insertion in model container [2018-11-07 15:45:44,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:45:44" (1/1) ... [2018-11-07 15:45:44,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:45:45,121 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:45:46,181 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:45:46,186 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:45:46,684 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:45:46,714 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:45:46,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:46 WrapperNode [2018-11-07 15:45:46,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:45:46,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:45:46,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:45:46,716 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:45:46,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:46" (1/1) ... [2018-11-07 15:45:46,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:46" (1/1) ... [2018-11-07 15:45:46,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:45:46,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:45:46,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:45:46,988 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:45:46,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:46" (1/1) ... [2018-11-07 15:45:47,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:46" (1/1) ... [2018-11-07 15:45:47,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:46" (1/1) ... [2018-11-07 15:45:47,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:46" (1/1) ... [2018-11-07 15:45:47,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:46" (1/1) ... [2018-11-07 15:45:47,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:46" (1/1) ... [2018-11-07 15:45:47,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:46" (1/1) ... [2018-11-07 15:45:47,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:45:47,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:45:47,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:45:47,226 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:45:47,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:46" (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 15:45:47,297 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:45:47,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:45:47,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:45:47,297 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:45:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:45:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:45:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:45:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:45:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:45:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:45:47,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:45:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:45:47,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:45:55,445 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:45:55,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:45:55 BoogieIcfgContainer [2018-11-07 15:45:55,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:45:55,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:45:55,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:45:55,451 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:45:55,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:45:44" (1/3) ... [2018-11-07 15:45:55,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de4bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:45:55, skipping insertion in model container [2018-11-07 15:45:55,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:45:46" (2/3) ... [2018-11-07 15:45:55,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de4bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:45:55, skipping insertion in model container [2018-11-07 15:45:55,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:45:55" (3/3) ... [2018-11-07 15:45:55,454 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label43_true-unreach-call.c [2018-11-07 15:45:55,464 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:45:55,473 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:45:55,487 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:45:55,531 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:45:55,531 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:45:55,532 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:45:55,532 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:45:55,532 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:45:55,532 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:45:55,532 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:45:55,532 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:45:55,571 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 15:45:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-07 15:45:55,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:45:55,584 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:45:55,586 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:45:55,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:45:55,591 INFO L82 PathProgramCache]: Analyzing trace with hash 2013780399, now seen corresponding path program 1 times [2018-11-07 15:45:55,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:45:55,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:45:55,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:45:55,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:45:55,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:45:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:45:56,055 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:45:56,178 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 15:45:56,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:45:56,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:45:56,181 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:45:56,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:45:56,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:45:56,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:45:56,206 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 15:46:02,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:46:02,513 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 15:46:02,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:46:02,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-11-07 15:46:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:46:02,549 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 15:46:02,549 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 15:46:02,562 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:46:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 15:46:02,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 15:46:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 15:46:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 15:46:02,726 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 73 [2018-11-07 15:46:02,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:46:02,727 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 15:46:02,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:46:02,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 15:46:02,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-07 15:46:02,746 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:46:02,747 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, 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] [2018-11-07 15:46:02,747 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:46:02,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:46:02,748 INFO L82 PathProgramCache]: Analyzing trace with hash -928614391, now seen corresponding path program 1 times [2018-11-07 15:46:02,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:46:02,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:02,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:46:02,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:02,750 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:46:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:46:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:46:03,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:46:03,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:46:03,117 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:46:03,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:46:03,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:46:03,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:46:03,122 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-11-07 15:46:13,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:46:13,832 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-11-07 15:46:13,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:46:13,832 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-11-07 15:46:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:46:13,853 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 15:46:13,853 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 15:46:13,859 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 15:46:13,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 15:46:13,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-11-07 15:46:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 15:46:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-11-07 15:46:13,943 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 162 [2018-11-07 15:46:13,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:46:13,943 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-11-07 15:46:13,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:46:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-11-07 15:46:13,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-07 15:46:13,948 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:46:13,948 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, 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] [2018-11-07 15:46:13,948 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:46:13,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:46:13,949 INFO L82 PathProgramCache]: Analyzing trace with hash 2132673540, now seen corresponding path program 1 times [2018-11-07 15:46:13,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:46:13,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:13,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:46:13,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:13,950 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:46:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:46:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:46:14,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:46:14,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:46:14,261 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:46:14,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:46:14,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:46:14,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:46:14,263 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-11-07 15:46:20,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:46:20,519 INFO L93 Difference]: Finished difference Result 6669 states and 11522 transitions. [2018-11-07 15:46:20,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:46:20,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-11-07 15:46:20,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:46:20,545 INFO L225 Difference]: With dead ends: 6669 [2018-11-07 15:46:20,547 INFO L226 Difference]: Without dead ends: 3747 [2018-11-07 15:46:20,556 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 15:46:20,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2018-11-07 15:46:20,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3689. [2018-11-07 15:46:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3689 states. [2018-11-07 15:46:20,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5891 transitions. [2018-11-07 15:46:20,672 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5891 transitions. Word has length 209 [2018-11-07 15:46:20,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:46:20,673 INFO L480 AbstractCegarLoop]: Abstraction has 3689 states and 5891 transitions. [2018-11-07 15:46:20,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:46:20,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5891 transitions. [2018-11-07 15:46:20,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 15:46:20,682 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:46:20,682 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:46:20,682 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:46:20,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:46:20,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2039872936, now seen corresponding path program 1 times [2018-11-07 15:46:20,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:46:20,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:20,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:46:20,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:20,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:46:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:46:21,000 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:46:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:46:21,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:46:21,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:46:21,067 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:46:21,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:46:21,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:46:21,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:46:21,069 INFO L87 Difference]: Start difference. First operand 3689 states and 5891 transitions. Second operand 6 states. [2018-11-07 15:46:25,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:46:25,918 INFO L93 Difference]: Finished difference Result 9623 states and 15373 transitions. [2018-11-07 15:46:25,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:46:25,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-11-07 15:46:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:46:25,945 INFO L225 Difference]: With dead ends: 9623 [2018-11-07 15:46:25,945 INFO L226 Difference]: Without dead ends: 5940 [2018-11-07 15:46:25,958 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 15:46:25,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2018-11-07 15:46:26,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5889. [2018-11-07 15:46:26,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5889 states. [2018-11-07 15:46:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5889 states to 5889 states and 8064 transitions. [2018-11-07 15:46:26,086 INFO L78 Accepts]: Start accepts. Automaton has 5889 states and 8064 transitions. Word has length 211 [2018-11-07 15:46:26,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:46:26,086 INFO L480 AbstractCegarLoop]: Abstraction has 5889 states and 8064 transitions. [2018-11-07 15:46:26,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:46:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5889 states and 8064 transitions. [2018-11-07 15:46:26,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-11-07 15:46:26,094 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:46:26,094 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 15:46:26,094 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:46:26,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:46:26,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1691415403, now seen corresponding path program 1 times [2018-11-07 15:46:26,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:46:26,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:26,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:46:26,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:26,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:46:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:46:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 15:46:26,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:46:26,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:46:26,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:46:26,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:46:26,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:46:26,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:46:26,274 INFO L87 Difference]: Start difference. First operand 5889 states and 8064 transitions. Second operand 4 states. [2018-11-07 15:46:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:46:34,705 INFO L93 Difference]: Finished difference Result 23211 states and 32875 transitions. [2018-11-07 15:46:34,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:46:34,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2018-11-07 15:46:34,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:46:34,785 INFO L225 Difference]: With dead ends: 23211 [2018-11-07 15:46:34,786 INFO L226 Difference]: Without dead ends: 17328 [2018-11-07 15:46:34,815 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:46:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17328 states. [2018-11-07 15:46:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17328 to 17328. [2018-11-07 15:46:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17328 states. [2018-11-07 15:46:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17328 states to 17328 states and 23091 transitions. [2018-11-07 15:46:35,178 INFO L78 Accepts]: Start accepts. Automaton has 17328 states and 23091 transitions. Word has length 269 [2018-11-07 15:46:35,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:46:35,179 INFO L480 AbstractCegarLoop]: Abstraction has 17328 states and 23091 transitions. [2018-11-07 15:46:35,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:46:35,179 INFO L276 IsEmpty]: Start isEmpty. Operand 17328 states and 23091 transitions. [2018-11-07 15:46:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-11-07 15:46:35,222 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:46:35,223 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:35,223 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:46:35,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:46:35,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1084028798, now seen corresponding path program 1 times [2018-11-07 15:46:35,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:46:35,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:35,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:46:35,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:35,225 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:46:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:46:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:46:36,119 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:46:36,119 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:46:36,120 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 475 with the following transitions: [2018-11-07 15:46:36,123 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2103], [2107], [2109], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 15:46:36,182 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:46:36,183 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:46:37,230 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:46:37,231 INFO L272 AbstractInterpreter]: Visited 283 different actions 283 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:46:37,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:46:37,286 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:46:38,507 INFO L227 lantSequenceWeakener]: Weakened 465 states. On average, predicates are now at 77.8% of their original sizes. [2018-11-07 15:46:38,507 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:46:38,998 INFO L415 sIntCurrentIteration]: We unified 473 AI predicates to 473 [2018-11-07 15:46:38,998 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:46:39,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:46:39,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 15:46:39,001 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:46:39,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 15:46:39,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 15:46:39,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:46:39,002 INFO L87 Difference]: Start difference. First operand 17328 states and 23091 transitions. Second operand 8 states. [2018-11-07 15:46:46,798 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown