java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:27:04,854 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:27:04,856 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:27:04,869 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:27:04,869 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:27:04,870 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:27:04,872 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:27:04,874 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:27:04,875 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:27:04,876 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:27:04,877 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:27:04,878 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:27:04,879 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:27:04,880 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:27:04,881 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:27:04,882 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:27:04,883 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:27:04,885 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:27:04,887 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:27:04,888 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:27:04,890 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:27:04,891 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:27:04,894 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:27:04,894 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:27:04,894 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:27:04,895 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:27:04,896 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:27:04,897 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:27:04,898 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:27:04,899 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:27:04,900 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:27:04,900 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:27:04,901 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:27:04,901 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:27:04,902 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:27:04,903 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:27:04,903 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:27:04,929 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:27:04,929 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:27:04,931 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:27:04,931 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:27:04,931 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:27:04,931 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:27:04,932 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:27:04,932 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:27:04,932 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:27:04,932 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:27:04,932 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:27:04,932 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:27:04,935 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:27:04,935 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:27:04,936 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:27:04,936 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:27:04,936 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:27:04,937 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:27:04,937 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:27:04,937 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:27:04,937 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:27:04,938 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:27:04,939 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:27:04,940 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:27:04,940 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:27:04,940 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:27:04,940 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:27:04,940 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:27:04,941 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:27:04,941 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:27:04,941 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:27:04,941 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:27:04,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:27:04,942 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:27:04,942 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:27:04,942 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:27:05,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:27:05,029 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:27:05,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:27:05,037 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:27:05,037 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:27:05,038 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label57_true-unreach-call.c [2018-10-27 08:27:05,108 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/60c553176/75117f9ea68c48d295fcb7f3699a3872/FLAG5b6e97e21 [2018-10-27 08:27:05,804 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:27:05,805 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label57_true-unreach-call.c [2018-10-27 08:27:05,828 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/60c553176/75117f9ea68c48d295fcb7f3699a3872/FLAG5b6e97e21 [2018-10-27 08:27:05,852 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/60c553176/75117f9ea68c48d295fcb7f3699a3872 [2018-10-27 08:27:05,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:27:05,869 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:27:05,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:27:05,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:27:05,878 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:27:05,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:27:05" (1/1) ... [2018-10-27 08:27:05,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42e875f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:05, skipping insertion in model container [2018-10-27 08:27:05,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:27:05" (1/1) ... [2018-10-27 08:27:05,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:27:06,016 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:27:06,775 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:27:06,780 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:27:07,073 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:27:07,099 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:27:07,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:07 WrapperNode [2018-10-27 08:27:07,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:27:07,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:27:07,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:27:07,102 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:27:07,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:07" (1/1) ... [2018-10-27 08:27:07,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:07" (1/1) ... [2018-10-27 08:27:07,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:27:07,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:27:07,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:27:07,476 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:27:07,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:07" (1/1) ... [2018-10-27 08:27:07,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:07" (1/1) ... [2018-10-27 08:27:07,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:07" (1/1) ... [2018-10-27 08:27:07,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:07" (1/1) ... [2018-10-27 08:27:07,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:07" (1/1) ... [2018-10-27 08:27:07,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:07" (1/1) ... [2018-10-27 08:27:07,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:07" (1/1) ... [2018-10-27 08:27:07,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:27:07,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:27:07,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:27:07,663 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:27:07,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:27:07,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:27:07,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:27:07,746 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:27:07,746 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:27:07,746 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:27:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:27:07,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:27:07,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:27:07,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:27:07,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:27:14,559 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:27:14,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:27:14 BoogieIcfgContainer [2018-10-27 08:27:14,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:27:14,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:27:14,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:27:14,566 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:27:14,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:27:05" (1/3) ... [2018-10-27 08:27:14,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb9df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:27:14, skipping insertion in model container [2018-10-27 08:27:14,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:27:07" (2/3) ... [2018-10-27 08:27:14,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bb9df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:27:14, skipping insertion in model container [2018-10-27 08:27:14,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:27:14" (3/3) ... [2018-10-27 08:27:14,570 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label57_true-unreach-call.c [2018-10-27 08:27:14,581 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:27:14,591 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:27:14,610 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:27:14,653 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:27:14,654 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:27:14,654 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:27:14,654 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:27:14,654 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:27:14,654 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:27:14,655 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:27:14,655 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:27:14,705 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 08:27:14,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-27 08:27:14,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:27:14,717 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] [2018-10-27 08:27:14,720 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:27:14,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:14,726 INFO L82 PathProgramCache]: Analyzing trace with hash -768030333, now seen corresponding path program 1 times [2018-10-27 08:27:14,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:27:14,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:14,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:27:14,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:14,779 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:27:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:27:15,203 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:27:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:27:15,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:27:15,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:27:15,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:27:15,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:27:15,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:27:15,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:27:15,364 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 08:27:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:27:20,708 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 08:27:20,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:27:20,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-10-27 08:27:20,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:27:20,736 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 08:27:20,736 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 08:27:20,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:27:20,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 08:27:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 08:27:20,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 08:27:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-10-27 08:27:20,859 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 47 [2018-10-27 08:27:20,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:27:20,860 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-10-27 08:27:20,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:27:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-10-27 08:27:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 08:27:20,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:27:20,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:27:20,874 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:27:20,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:20,874 INFO L82 PathProgramCache]: Analyzing trace with hash -722771479, now seen corresponding path program 1 times [2018-10-27 08:27:20,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:27:20,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:20,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:27:20,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:20,877 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:27:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:27:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:27:21,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:27:21,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:27:21,366 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:27:21,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:27:21,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:27:21,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:27:21,369 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-10-27 08:27:28,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:27:28,813 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-10-27 08:27:28,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:27:28,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-27 08:27:28,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:27:28,843 INFO L225 Difference]: With dead ends: 2184 [2018-10-27 08:27:28,843 INFO L226 Difference]: Without dead ends: 1446 [2018-10-27 08:27:28,849 INFO L605 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 [2018-10-27 08:27:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-10-27 08:27:28,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-10-27 08:27:28,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-10-27 08:27:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-10-27 08:27:28,941 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 140 [2018-10-27 08:27:28,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:27:28,941 INFO L481 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-10-27 08:27:28,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:27:28,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-10-27 08:27:28,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-27 08:27:28,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:27:28,949 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:27:28,949 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:27:28,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:28,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1752957247, now seen corresponding path program 1 times [2018-10-27 08:27:28,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:27:28,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:28,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:27:28,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:27:28,954 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:27:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:27:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 80 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:27:29,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:27:29,283 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:27:29,284 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-27 08:27:29,287 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [455], [457], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:27:29,339 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:27:29,339 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:27:29,882 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:27:29,885 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:27:29,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:27:29,928 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:27:30,559 INFO L227 lantSequenceWeakener]: Weakened 242 states. On average, predicates are now at 77.85% of their original sizes. [2018-10-27 08:27:30,560 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:27:30,834 INFO L415 sIntCurrentIteration]: We unified 250 AI predicates to 250 [2018-10-27 08:27:30,835 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:27:30,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:27:30,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:27:30,837 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:27:30,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:27:30,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:27:30,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:27:30,839 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 6 states. [2018-10-27 08:29:10,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:29:10,134 INFO L93 Difference]: Finished difference Result 3184 states and 5088 transitions. [2018-10-27 08:29:10,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:29:10,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 251 [2018-10-27 08:29:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:29:10,145 INFO L225 Difference]: With dead ends: 3184 [2018-10-27 08:29:10,145 INFO L226 Difference]: Without dead ends: 1765 [2018-10-27 08:29:10,150 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 251 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:29:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2018-10-27 08:29:10,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1763. [2018-10-27 08:29:10,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-10-27 08:29:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-10-27 08:29:10,199 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 251 [2018-10-27 08:29:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:29:10,199 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-10-27 08:29:10,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:29:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-10-27 08:29:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-27 08:29:10,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:29:10,206 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:29:10,206 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:29:10,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:29:10,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1422241764, now seen corresponding path program 1 times [2018-10-27 08:29:10,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:29:10,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:29:10,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:29:10,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:29:10,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:29:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:29:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 126 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 08:29:10,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:29:10,518 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:29:10,518 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 344 with the following transitions: [2018-10-27 08:29:10,519 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [455], [457], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:29:10,526 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:29:10,526 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:29:10,709 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:29:10,710 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:29:10,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:29:10,720 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:29:11,070 INFO L227 lantSequenceWeakener]: Weakened 340 states. On average, predicates are now at 80.42% of their original sizes. [2018-10-27 08:29:11,071 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:29:11,495 INFO L415 sIntCurrentIteration]: We unified 342 AI predicates to 342 [2018-10-27 08:29:11,495 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:29:11,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:29:11,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 08:29:11,496 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:29:11,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:29:11,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:29:11,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:29:11,497 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 10 states. [2018-10-27 08:30:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:30:33,471 INFO L93 Difference]: Finished difference Result 5965 states and 9412 transitions. [2018-10-27 08:30:33,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-27 08:30:33,471 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 343 [2018-10-27 08:30:33,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:30:33,496 INFO L225 Difference]: With dead ends: 5965 [2018-10-27 08:30:33,496 INFO L226 Difference]: Without dead ends: 4546 [2018-10-27 08:30:33,507 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 352 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2018-10-27 08:30:33,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2018-10-27 08:30:33,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4522. [2018-10-27 08:30:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4522 states. [2018-10-27 08:30:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 5610 transitions. [2018-10-27 08:30:33,623 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 5610 transitions. Word has length 343 [2018-10-27 08:30:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:30:33,624 INFO L481 AbstractCegarLoop]: Abstraction has 4522 states and 5610 transitions. [2018-10-27 08:30:33,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:30:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 5610 transitions. [2018-10-27 08:30:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-10-27 08:30:33,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:30:33,640 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:30:33,640 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:30:33,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:30:33,641 INFO L82 PathProgramCache]: Analyzing trace with hash -484096167, now seen corresponding path program 1 times [2018-10-27 08:30:33,641 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:30:33,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:30:33,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:30:33,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:30:33,642 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:30:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:30:34,094 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:30:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 126 proven. 235 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 08:30:34,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:30:34,742 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:30:34,743 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 501 with the following transitions: [2018-10-27 08:30:34,743 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [455], [457], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [800], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:30:34,751 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:30:34,751 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:30:35,014 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:30:35,014 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:30:35,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:30:35,054 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:30:35,476 INFO L227 lantSequenceWeakener]: Weakened 497 states. On average, predicates are now at 77.61% of their original sizes. [2018-10-27 08:30:35,476 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:30:35,711 INFO L415 sIntCurrentIteration]: We unified 499 AI predicates to 499 [2018-10-27 08:30:35,712 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:30:35,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:30:35,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 08:30:35,713 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:30:35,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:30:35,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:30:35,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:30:35,714 INFO L87 Difference]: Start difference. First operand 4522 states and 5610 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown