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_label15_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:47:36,871 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:47:36,873 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:47:36,885 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:47:36,886 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:47:36,887 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:47:36,888 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:47:36,892 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:47:36,897 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:47:36,898 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:47:36,899 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:47:36,899 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:47:36,902 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:47:36,903 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:47:36,905 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:47:36,906 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:47:36,907 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:47:36,910 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:47:36,919 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:47:36,922 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:47:36,923 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:47:36,925 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:47:36,929 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:47:36,929 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:47:36,930 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:47:36,930 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:47:36,931 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:47:36,934 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:47:36,935 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:47:36,936 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:47:36,936 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:47:36,940 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 11:47:36,944 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 11:47:36,974 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:47:36,975 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:47:36,976 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:47:36,976 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:47:36,976 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:47:36,976 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:47:36,976 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:47:36,977 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:47:36,977 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:47:36,978 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:47:36,978 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:47:36,978 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:47:36,979 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:47:36,979 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:47:36,979 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:47:36,979 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:47:36,979 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:47:36,979 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:47:36,980 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:47:36,980 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:47:36,980 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:47:36,980 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:47:36,980 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:47:36,981 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:47:36,981 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:47:36,981 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:47:36,981 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:47:36,981 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:47:36,982 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:47:36,982 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:47:36,982 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:47:36,982 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:47:36,982 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:47:36,983 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:47:37,038 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:47:37,054 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:47:37,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:47:37,061 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:47:37,061 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:47:37,062 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label15_false-unreach-call.c [2018-10-27 11:47:37,129 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e5bca0c3b/84dcd0e55b7d4a7d9e6c74f607172656/FLAG599fde2ca [2018-10-27 11:47:37,824 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:47:37,825 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label15_false-unreach-call.c [2018-10-27 11:47:37,842 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e5bca0c3b/84dcd0e55b7d4a7d9e6c74f607172656/FLAG599fde2ca [2018-10-27 11:47:37,858 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e5bca0c3b/84dcd0e55b7d4a7d9e6c74f607172656 [2018-10-27 11:47:37,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:47:37,871 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:47:37,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:47:37,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:47:37,877 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:47:37,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:47:37" (1/1) ... [2018-10-27 11:47:37,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43083d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:37, skipping insertion in model container [2018-10-27 11:47:37,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:47:37" (1/1) ... [2018-10-27 11:47:37,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:47:37,973 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:47:38,647 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:47:38,652 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:47:38,901 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:47:38,925 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:47:38,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:38 WrapperNode [2018-10-27 11:47:38,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:47:38,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:47:38,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:47:38,927 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:47:38,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:38" (1/1) ... [2018-10-27 11:47:38,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:38" (1/1) ... [2018-10-27 11:47:39,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:47:39,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:47:39,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:47:39,271 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:47:39,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:38" (1/1) ... [2018-10-27 11:47:39,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:38" (1/1) ... [2018-10-27 11:47:39,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:38" (1/1) ... [2018-10-27 11:47:39,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:38" (1/1) ... [2018-10-27 11:47:39,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:38" (1/1) ... [2018-10-27 11:47:39,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:38" (1/1) ... [2018-10-27 11:47:39,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:38" (1/1) ... [2018-10-27 11:47:39,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:47:39,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:47:39,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:47:39,468 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:47:39,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:38" (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 11:47:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:47:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:47:39,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 11:47:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 11:47:39,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:47:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:47:39,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:47:39,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:47:39,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:47:39,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:47:46,115 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:47:46,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:47:46 BoogieIcfgContainer [2018-10-27 11:47:46,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:47:46,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:47:46,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:47:46,121 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:47:46,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:47:37" (1/3) ... [2018-10-27 11:47:46,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1091a448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:47:46, skipping insertion in model container [2018-10-27 11:47:46,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:38" (2/3) ... [2018-10-27 11:47:46,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1091a448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:47:46, skipping insertion in model container [2018-10-27 11:47:46,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:47:46" (3/3) ... [2018-10-27 11:47:46,125 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label15_false-unreach-call.c [2018-10-27 11:47:46,134 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:47:46,143 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:47:46,160 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:47:46,201 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:47:46,201 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:47:46,201 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:47:46,202 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:47:46,202 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:47:46,202 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:47:46,202 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:47:46,202 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:47:46,233 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 11:47:46,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-27 11:47:46,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:47:46,242 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] [2018-10-27 11:47:46,245 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:47:46,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:47:46,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1965718299, now seen corresponding path program 1 times [2018-10-27 11:47:46,254 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:47:46,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:47:46,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:47:46,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:47:46,305 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:47:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:47:46,721 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 11:47:46,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:47:46,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:47:46,733 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:47:46,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:47:46,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:47:46,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:47:46,793 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-27 11:47:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:47:52,381 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-27 11:47:52,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:47:52,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-10-27 11:47:52,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:47:52,415 INFO L225 Difference]: With dead ends: 1513 [2018-10-27 11:47:52,415 INFO L226 Difference]: Without dead ends: 1097 [2018-10-27 11:47:52,423 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 11:47:52,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-27 11:47:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-10-27 11:47:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 11:47:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1357 transitions. [2018-10-27 11:47:52,547 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1357 transitions. Word has length 29 [2018-10-27 11:47:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:47:52,548 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1357 transitions. [2018-10-27 11:47:52,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:47:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1357 transitions. [2018-10-27 11:47:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-27 11:47:52,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:47:52,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:52,555 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:47:52,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:47:52,555 INFO L82 PathProgramCache]: Analyzing trace with hash -2135341492, now seen corresponding path program 1 times [2018-10-27 11:47:52,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:47:52,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:47:52,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:47:52,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:47:52,557 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:47:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:47:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:47:52,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:47:52,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 11:47:52,800 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:47:52,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 11:47:52,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 11:47:52,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 11:47:52,803 INFO L87 Difference]: Start difference. First operand 744 states and 1357 transitions. Second operand 5 states. [2018-10-27 11:47:59,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:47:59,712 INFO L93 Difference]: Finished difference Result 2196 states and 4092 transitions. [2018-10-27 11:47:59,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:47:59,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-10-27 11:47:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:47:59,734 INFO L225 Difference]: With dead ends: 2196 [2018-10-27 11:47:59,734 INFO L226 Difference]: Without dead ends: 1458 [2018-10-27 11:47:59,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 11:47:59,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-10-27 11:47:59,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-10-27 11:47:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-10-27 11:47:59,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2551 transitions. [2018-10-27 11:47:59,800 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2551 transitions. Word has length 99 [2018-10-27 11:47:59,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:47:59,801 INFO L481 AbstractCegarLoop]: Abstraction has 1438 states and 2551 transitions. [2018-10-27 11:47:59,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 11:47:59,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2551 transitions. [2018-10-27 11:47:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-27 11:47:59,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:47:59,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:59,806 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:47:59,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:47:59,806 INFO L82 PathProgramCache]: Analyzing trace with hash 558578681, now seen corresponding path program 1 times [2018-10-27 11:47:59,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:47:59,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:47:59,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:47:59,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:47:59,808 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:47:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:48:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:48:00,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:48:00,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:48:00,049 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:48:00,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:48:00,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:48:00,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:48:00,050 INFO L87 Difference]: Start difference. First operand 1438 states and 2551 transitions. Second operand 6 states. [2018-10-27 11:48:05,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:48:05,704 INFO L93 Difference]: Finished difference Result 4239 states and 7543 transitions. [2018-10-27 11:48:05,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:48:05,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-27 11:48:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:48:05,722 INFO L225 Difference]: With dead ends: 4239 [2018-10-27 11:48:05,722 INFO L226 Difference]: Without dead ends: 2807 [2018-10-27 11:48:05,732 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 11:48:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2018-10-27 11:48:05,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2785. [2018-10-27 11:48:05,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2018-10-27 11:48:05,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4352 transitions. [2018-10-27 11:48:05,819 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4352 transitions. Word has length 102 [2018-10-27 11:48:05,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:48:05,820 INFO L481 AbstractCegarLoop]: Abstraction has 2785 states and 4352 transitions. [2018-10-27 11:48:05,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:48:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4352 transitions. [2018-10-27 11:48:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-27 11:48:05,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:48:05,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:05,823 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:48:05,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:48:05,823 INFO L82 PathProgramCache]: Analyzing trace with hash -2114066796, now seen corresponding path program 1 times [2018-10-27 11:48:05,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:48:05,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:05,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:48:05,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:05,825 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:48:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:48:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:48:06,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:48:06,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:48:06,100 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:48:06,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:48:06,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:48:06,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:48:06,101 INFO L87 Difference]: Start difference. First operand 2785 states and 4352 transitions. Second operand 6 states. [2018-10-27 11:48:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:48:10,622 INFO L93 Difference]: Finished difference Result 6952 states and 11048 transitions. [2018-10-27 11:48:10,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:48:10,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-10-27 11:48:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:48:10,645 INFO L225 Difference]: With dead ends: 6952 [2018-10-27 11:48:10,645 INFO L226 Difference]: Without dead ends: 4173 [2018-10-27 11:48:10,662 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 11:48:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2018-10-27 11:48:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 4153. [2018-10-27 11:48:10,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4153 states. [2018-10-27 11:48:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 5896 transitions. [2018-10-27 11:48:10,775 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 5896 transitions. Word has length 103 [2018-10-27 11:48:10,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:48:10,776 INFO L481 AbstractCegarLoop]: Abstraction has 4153 states and 5896 transitions. [2018-10-27 11:48:10,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:48:10,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 5896 transitions. [2018-10-27 11:48:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-27 11:48:10,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:48:10,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:10,778 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:48:10,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:48:10,779 INFO L82 PathProgramCache]: Analyzing trace with hash -377282367, now seen corresponding path program 1 times [2018-10-27 11:48:10,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:48:10,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:10,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:48:10,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:10,780 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:48:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:48:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:48:10,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:48:10,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:48:10,989 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:48:10,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:48:10,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:48:10,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:48:10,991 INFO L87 Difference]: Start difference. First operand 4153 states and 5896 transitions. Second operand 6 states. [2018-10-27 11:48:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:48:15,951 INFO L93 Difference]: Finished difference Result 11374 states and 16767 transitions. [2018-10-27 11:48:15,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:48:15,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2018-10-27 11:48:15,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:48:15,998 INFO L225 Difference]: With dead ends: 11374 [2018-10-27 11:48:15,998 INFO L226 Difference]: Without dead ends: 7227 [2018-10-27 11:48:16,028 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 11:48:16,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2018-10-27 11:48:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 7152. [2018-10-27 11:48:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7152 states. [2018-10-27 11:48:16,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 9826 transitions. [2018-10-27 11:48:16,222 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 9826 transitions. Word has length 106 [2018-10-27 11:48:16,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:48:16,222 INFO L481 AbstractCegarLoop]: Abstraction has 7152 states and 9826 transitions. [2018-10-27 11:48:16,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:48:16,223 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 9826 transitions. [2018-10-27 11:48:16,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-27 11:48:16,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:48:16,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:16,225 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:48:16,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:48:16,225 INFO L82 PathProgramCache]: Analyzing trace with hash -996963759, now seen corresponding path program 1 times [2018-10-27 11:48:16,225 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:48:16,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:16,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:48:16,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:16,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:48:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:48:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:48:16,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:48:16,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:48:16,530 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:48:16,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:48:16,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:48:16,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:48:16,531 INFO L87 Difference]: Start difference. First operand 7152 states and 9826 transitions. Second operand 6 states. [2018-10-27 11:48:19,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:48:19,741 INFO L93 Difference]: Finished difference Result 17771 states and 25546 transitions. [2018-10-27 11:48:19,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:48:19,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-10-27 11:48:19,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:48:19,805 INFO L225 Difference]: With dead ends: 17771 [2018-10-27 11:48:19,806 INFO L226 Difference]: Without dead ends: 10625 [2018-10-27 11:48:19,836 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 11:48:19,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10625 states. [2018-10-27 11:48:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10625 to 10585. [2018-10-27 11:48:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10585 states. [2018-10-27 11:48:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10585 states to 10585 states and 13819 transitions. [2018-10-27 11:48:20,120 INFO L78 Accepts]: Start accepts. Automaton has 10585 states and 13819 transitions. Word has length 114 [2018-10-27 11:48:20,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:48:20,121 INFO L481 AbstractCegarLoop]: Abstraction has 10585 states and 13819 transitions. [2018-10-27 11:48:20,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:48:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 10585 states and 13819 transitions. [2018-10-27 11:48:20,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 11:48:20,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:48:20,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:20,123 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:48:20,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:48:20,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1532470232, now seen corresponding path program 1 times [2018-10-27 11:48:20,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:48:20,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:20,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:48:20,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:20,125 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:48:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:48:20,386 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:48:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 11:48:20,586 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:48:20,586 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:48:20,700 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 122 with the following transitions: [2018-10-27 11:48:20,704 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [311], [313], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [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], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 11:48:20,760 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:48:20,761 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:48:21,208 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 11:48:21,935 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:48:21,937 INFO L272 AbstractInterpreter]: Visited 99 different actions 284 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 11:48:21,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:48:21,982 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:48:22,484 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 81.82% of their original sizes. [2018-10-27 11:48:22,484 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:48:23,564 INFO L415 sIntCurrentIteration]: We unified 120 AI predicates to 120 [2018-10-27 11:48:23,565 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:48:23,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:48:23,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [4] total 17 [2018-10-27 11:48:23,566 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:48:23,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 11:48:23,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 11:48:23,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-10-27 11:48:23,567 INFO L87 Difference]: Start difference. First operand 10585 states and 13819 transitions. Second operand 15 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown