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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:42:13,782 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:42:13,784 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:42:13,800 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:42:13,801 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:42:13,802 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:42:13,804 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:42:13,806 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:42:13,808 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:42:13,809 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:42:13,810 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:42:13,810 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:42:13,811 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:42:13,812 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:42:13,813 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:42:13,814 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:42:13,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:42:13,816 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:42:13,818 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:42:13,820 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:42:13,821 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:42:13,822 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:42:13,825 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:42:13,825 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:42:13,825 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:42:13,828 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:42:13,829 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:42:13,830 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:42:13,830 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:42:13,837 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:42:13,837 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:42:13,838 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:42:13,838 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:42:13,838 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:42:13,839 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:42:13,840 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:42:13,840 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:42:13,860 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:42:13,860 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:42:13,861 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:42:13,861 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:42:13,861 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:42:13,861 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:42:13,862 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:42:13,862 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:42:13,862 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:42:13,862 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:42:13,862 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:42:13,862 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:42:13,863 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:42:13,863 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:42:13,863 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:42:13,864 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:42:13,864 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:42:13,864 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:42:13,864 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:42:13,864 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:42:13,865 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:42:13,865 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:42:13,865 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:42:13,865 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:42:13,865 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:42:13,865 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:42:13,866 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:42:13,866 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:42:13,866 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:42:13,866 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:42:13,866 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:42:13,867 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:42:13,867 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:42:13,867 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:42:13,914 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:42:13,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:42:13,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:42:13,934 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:42:13,935 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:42:13,935 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label10_true-unreach-call.c [2018-10-27 14:42:13,998 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e52c0ca60/8533f6c2e56e47ddad64addecfe9ec72/FLAG88cdfea76 [2018-10-27 14:42:14,653 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:42:14,656 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label10_true-unreach-call.c [2018-10-27 14:42:14,678 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e52c0ca60/8533f6c2e56e47ddad64addecfe9ec72/FLAG88cdfea76 [2018-10-27 14:42:14,699 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e52c0ca60/8533f6c2e56e47ddad64addecfe9ec72 [2018-10-27 14:42:14,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:42:14,712 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:42:14,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:42:14,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:42:14,717 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:42:14,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:42:14" (1/1) ... [2018-10-27 14:42:14,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f32220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:14, skipping insertion in model container [2018-10-27 14:42:14,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:42:14" (1/1) ... [2018-10-27 14:42:14,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:42:14,814 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:42:15,544 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:42:15,548 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:42:15,834 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:42:15,855 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:42:15,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:15 WrapperNode [2018-10-27 14:42:15,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:42:15,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:42:15,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:42:15,857 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:42:15,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:15" (1/1) ... [2018-10-27 14:42:15,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:15" (1/1) ... [2018-10-27 14:42:16,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:42:16,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:42:16,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:42:16,217 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:42:16,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:15" (1/1) ... [2018-10-27 14:42:16,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:15" (1/1) ... [2018-10-27 14:42:16,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:15" (1/1) ... [2018-10-27 14:42:16,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:15" (1/1) ... [2018-10-27 14:42:16,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:15" (1/1) ... [2018-10-27 14:42:16,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:15" (1/1) ... [2018-10-27 14:42:16,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:15" (1/1) ... [2018-10-27 14:42:16,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:42:16,422 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:42:16,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:42:16,422 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:42:16,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:15" (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 14:42:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:42:16,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:42:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:42:16,494 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:42:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:42:16,495 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:42:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:42:16,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:42:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:42:16,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:42:24,757 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:42:24,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:42:24 BoogieIcfgContainer [2018-10-27 14:42:24,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:42:24,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:42:24,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:42:24,763 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:42:24,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:42:14" (1/3) ... [2018-10-27 14:42:24,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a3e47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:42:24, skipping insertion in model container [2018-10-27 14:42:24,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:42:15" (2/3) ... [2018-10-27 14:42:24,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a3e47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:42:24, skipping insertion in model container [2018-10-27 14:42:24,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:42:24" (3/3) ... [2018-10-27 14:42:24,767 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label10_true-unreach-call.c [2018-10-27 14:42:24,776 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:42:24,785 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:42:24,804 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:42:24,845 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:42:24,845 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:42:24,846 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:42:24,846 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:42:24,846 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:42:24,846 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:42:24,846 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:42:24,847 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:42:24,880 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 14:42:24,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-27 14:42:24,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:42:24,892 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] [2018-10-27 14:42:24,895 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:42:24,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:42:24,902 INFO L82 PathProgramCache]: Analyzing trace with hash -369179421, now seen corresponding path program 1 times [2018-10-27 14:42:24,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:42:24,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:42:24,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:42:24,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:42:24,964 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:42:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:42:25,426 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 14:42:25,452 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 14:42:25,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:42:25,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:42:25,455 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:42:25,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:42:25,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:42:25,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:42:25,481 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-27 14:42:32,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:42:32,210 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-27 14:42:32,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:42:32,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-27 14:42:32,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:42:32,240 INFO L225 Difference]: With dead ends: 1513 [2018-10-27 14:42:32,241 INFO L226 Difference]: Without dead ends: 1097 [2018-10-27 14:42:32,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:42:32,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-27 14:42:32,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-10-27 14:42:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-10-27 14:42:32,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-10-27 14:42:32,375 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 39 [2018-10-27 14:42:32,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:42:32,376 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-10-27 14:42:32,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:42:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-10-27 14:42:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-27 14:42:32,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:42:32,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:32,385 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:42:32,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:42:32,386 INFO L82 PathProgramCache]: Analyzing trace with hash -820358275, now seen corresponding path program 1 times [2018-10-27 14:42:32,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:42:32,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:42:32,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:42:32,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:42:32,388 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:42:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:42:32,739 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:42:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:42:32,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:42:32,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:42:32,819 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:42:32,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:42:32,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:42:32,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:42:32,822 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-10-27 14:42:38,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:42:38,501 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-10-27 14:42:38,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:42:38,508 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-10-27 14:42:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:42:38,532 INFO L225 Difference]: With dead ends: 3259 [2018-10-27 14:42:38,532 INFO L226 Difference]: Without dead ends: 2168 [2018-10-27 14:42:38,540 INFO L605 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 [2018-10-27 14:42:38,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-10-27 14:42:38,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-10-27 14:42:38,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-10-27 14:42:38,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-10-27 14:42:38,650 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 110 [2018-10-27 14:42:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:42:38,651 INFO L481 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-10-27 14:42:38,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:42:38,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-10-27 14:42:38,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-27 14:42:38,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:42:38,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:38,663 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:42:38,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:42:38,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1928773899, now seen corresponding path program 1 times [2018-10-27 14:42:38,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:42:38,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:42:38,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:42:38,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:42:38,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:42:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:42:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:42:38,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:42:38,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:42:38,992 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:42:38,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:42:38,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:42:38,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:42:38,994 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-10-27 14:42:45,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:42:45,375 INFO L93 Difference]: Finished difference Result 7053 states and 12688 transitions. [2018-10-27 14:42:45,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:42:45,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-10-27 14:42:45,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:42:45,415 INFO L225 Difference]: With dead ends: 7053 [2018-10-27 14:42:45,416 INFO L226 Difference]: Without dead ends: 4917 [2018-10-27 14:42:45,440 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 14:42:45,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2018-10-27 14:42:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 4877. [2018-10-27 14:42:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2018-10-27 14:42:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 7891 transitions. [2018-10-27 14:42:45,627 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 7891 transitions. Word has length 138 [2018-10-27 14:42:45,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:42:45,628 INFO L481 AbstractCegarLoop]: Abstraction has 4877 states and 7891 transitions. [2018-10-27 14:42:45,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:42:45,628 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 7891 transitions. [2018-10-27 14:42:45,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-27 14:42:45,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:42:45,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:45,631 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:42:45,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:42:45,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1730052985, now seen corresponding path program 1 times [2018-10-27 14:42:45,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:42:45,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:42:45,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:42:45,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:42:45,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:42:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:42:45,839 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:42:45,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:42:45,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:42:45,840 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:42:45,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:42:45,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:42:45,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:42:45,841 INFO L87 Difference]: Start difference. First operand 4877 states and 7891 transitions. Second operand 6 states. [2018-10-27 14:42:49,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:42:49,006 INFO L93 Difference]: Finished difference Result 11909 states and 19972 transitions. [2018-10-27 14:42:49,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:42:49,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-10-27 14:42:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:42:49,063 INFO L225 Difference]: With dead ends: 11909 [2018-10-27 14:42:49,064 INFO L226 Difference]: Without dead ends: 7038 [2018-10-27 14:42:49,091 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 14:42:49,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2018-10-27 14:42:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 6977. [2018-10-27 14:42:49,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-10-27 14:42:49,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 9942 transitions. [2018-10-27 14:42:49,306 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 9942 transitions. Word has length 156 [2018-10-27 14:42:49,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:42:49,307 INFO L481 AbstractCegarLoop]: Abstraction has 6977 states and 9942 transitions. [2018-10-27 14:42:49,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:42:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 9942 transitions. [2018-10-27 14:42:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-27 14:42:49,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:42:49,314 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:49,314 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:42:49,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:42:49,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1129340368, now seen corresponding path program 1 times [2018-10-27 14:42:49,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:42:49,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:42:49,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:42:49,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:42:49,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:42:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:42:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:42:49,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:42:49,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:42:49,673 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:42:49,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:42:49,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:42:49,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:42:49,675 INFO L87 Difference]: Start difference. First operand 6977 states and 9942 transitions. Second operand 6 states. [2018-10-27 14:42:53,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:42:53,798 INFO L93 Difference]: Finished difference Result 17709 states and 25496 transitions. [2018-10-27 14:42:53,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:42:53,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2018-10-27 14:42:53,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:42:53,860 INFO L225 Difference]: With dead ends: 17709 [2018-10-27 14:42:53,860 INFO L226 Difference]: Without dead ends: 10738 [2018-10-27 14:42:53,907 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 14:42:53,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10738 states. [2018-10-27 14:42:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10738 to 10702. [2018-10-27 14:42:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10702 states. [2018-10-27 14:42:54,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10702 states to 10702 states and 14504 transitions. [2018-10-27 14:42:54,181 INFO L78 Accepts]: Start accepts. Automaton has 10702 states and 14504 transitions. Word has length 203 [2018-10-27 14:42:54,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:42:54,182 INFO L481 AbstractCegarLoop]: Abstraction has 10702 states and 14504 transitions. [2018-10-27 14:42:54,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:42:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 10702 states and 14504 transitions. [2018-10-27 14:42:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-27 14:42:54,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:42:54,186 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:42:54,187 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:42:54,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:42:54,187 INFO L82 PathProgramCache]: Analyzing trace with hash 2083831764, now seen corresponding path program 1 times [2018-10-27 14:42:54,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:42:54,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:42:54,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:42:54,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:42:54,190 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:42:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:42:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-10-27 14:42:54,477 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:42:54,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:42:54,477 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:42:54,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:42:54,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:42:54,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:42:54,479 INFO L87 Difference]: Start difference. First operand 10702 states and 14504 transitions. Second operand 4 states. [2018-10-27 14:42:59,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:42:59,831 INFO L93 Difference]: Finished difference Result 27183 states and 37572 transitions. [2018-10-27 14:42:59,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:42:59,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2018-10-27 14:42:59,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:42:59,909 INFO L225 Difference]: With dead ends: 27183 [2018-10-27 14:42:59,909 INFO L226 Difference]: Without dead ends: 16487 [2018-10-27 14:42:59,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:42:59,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16487 states. [2018-10-27 14:43:00,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16487 to 16487. [2018-10-27 14:43:00,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16487 states. [2018-10-27 14:43:00,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16487 states to 16487 states and 21483 transitions. [2018-10-27 14:43:00,360 INFO L78 Accepts]: Start accepts. Automaton has 16487 states and 21483 transitions. Word has length 240 [2018-10-27 14:43:00,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:43:00,361 INFO L481 AbstractCegarLoop]: Abstraction has 16487 states and 21483 transitions. [2018-10-27 14:43:00,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:43:00,361 INFO L276 IsEmpty]: Start isEmpty. Operand 16487 states and 21483 transitions. [2018-10-27 14:43:00,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-10-27 14:43:00,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:43:00,394 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:43:00,394 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:43:00,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:43:00,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1463225967, now seen corresponding path program 1 times [2018-10-27 14:43:00,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:43:00,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:43:00,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:43:00,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:43:00,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:43:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:43:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 215 proven. 115 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-27 14:43:00,815 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:43:00,815 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:43:00,816 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-10-27 14:43:00,818 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], [391], [393], [396], [404], [412], [420], [428], [436], [444], [452], [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], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [948], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 14:43:00,881 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:43:00,882 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:43:01,563 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:43:01,565 INFO L272 AbstractInterpreter]: Visited 145 different actions 145 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 14:43:01,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:43:01,610 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:43:02,621 INFO L227 lantSequenceWeakener]: Weakened 412 states. On average, predicates are now at 77.51% of their original sizes. [2018-10-27 14:43:02,621 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:43:03,040 INFO L415 sIntCurrentIteration]: We unified 423 AI predicates to 423 [2018-10-27 14:43:03,040 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:43:03,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:43:03,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-27 14:43:03,042 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:43:03,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 14:43:03,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 14:43:03,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:43:03,043 INFO L87 Difference]: Start difference. First operand 16487 states and 21483 transitions. Second operand 8 states. [2018-10-27 14:43:06,848 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