java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label51_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 11:58:24,906 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 11:58:24,908 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 11:58:24,921 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 11:58:24,921 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 11:58:24,922 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 11:58:24,924 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 11:58:24,926 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 11:58:24,928 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 11:58:24,929 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 11:58:24,930 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 11:58:24,930 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 11:58:24,931 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 11:58:24,932 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 11:58:24,933 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 11:58:24,934 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 11:58:24,935 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 11:58:24,937 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 11:58:24,939 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 11:58:24,941 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 11:58:24,942 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 11:58:24,944 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 11:58:24,949 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 11:58:24,949 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 11:58:24,949 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 11:58:24,954 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 11:58:24,956 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 11:58:24,956 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 11:58:24,957 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 11:58:24,962 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 11:58:24,962 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 11:58:24,963 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 11:58:24,968 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 11:58:25,002 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 11:58:25,003 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 11:58:25,004 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 11:58:25,006 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 11:58:25,006 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 11:58:25,006 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 11:58:25,007 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 11:58:25,007 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 11:58:25,007 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 11:58:25,007 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 11:58:25,007 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 11:58:25,008 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 11:58:25,010 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 11:58:25,010 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 11:58:25,010 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 11:58:25,011 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 11:58:25,011 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 11:58:25,011 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 11:58:25,011 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 11:58:25,011 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 11:58:25,013 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 11:58:25,013 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 11:58:25,014 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 11:58:25,014 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 11:58:25,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 11:58:25,014 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 11:58:25,015 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 11:58:25,015 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 11:58:25,015 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 11:58:25,015 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 11:58:25,015 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 11:58:25,016 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 11:58:25,016 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 11:58:25,016 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 11:58:25,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 11:58:25,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 11:58:25,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 11:58:25,103 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 11:58:25,103 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 11:58:25,104 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label51_false-unreach-call.c [2018-11-07 11:58:25,164 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d869697b1/0f0297ebbe8c426ca91ab759e4c8ddc5/FLAGae22db303 [2018-11-07 11:58:26,070 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 11:58:26,071 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label51_false-unreach-call.c [2018-11-07 11:58:26,111 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d869697b1/0f0297ebbe8c426ca91ab759e4c8ddc5/FLAGae22db303 [2018-11-07 11:58:26,131 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d869697b1/0f0297ebbe8c426ca91ab759e4c8ddc5 [2018-11-07 11:58:26,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 11:58:26,147 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 11:58:26,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 11:58:26,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 11:58:26,153 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 11:58:26,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:58:26" (1/1) ... [2018-11-07 11:58:26,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:26, skipping insertion in model container [2018-11-07 11:58:26,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:58:26" (1/1) ... [2018-11-07 11:58:26,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 11:58:26,371 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 11:58:27,950 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:58:27,956 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 11:58:28,630 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:58:28,675 INFO L193 MainTranslator]: Completed translation [2018-11-07 11:58:28,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:28 WrapperNode [2018-11-07 11:58:28,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 11:58:28,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 11:58:28,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 11:58:28,677 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 11:58:28,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:28" (1/1) ... [2018-11-07 11:58:29,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:28" (1/1) ... [2018-11-07 11:58:29,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 11:58:29,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 11:58:29,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 11:58:29,075 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 11:58:29,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:28" (1/1) ... [2018-11-07 11:58:29,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:28" (1/1) ... [2018-11-07 11:58:29,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:28" (1/1) ... [2018-11-07 11:58:29,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:28" (1/1) ... [2018-11-07 11:58:29,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:28" (1/1) ... [2018-11-07 11:58:29,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:28" (1/1) ... [2018-11-07 11:58:29,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:28" (1/1) ... [2018-11-07 11:58:29,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 11:58:29,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 11:58:29,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 11:58:29,430 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 11:58:29,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 11:58:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 11:58:29,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 11:58:29,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 11:58:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 11:58:29,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 11:58:29,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 11:58:29,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 11:58:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 11:58:29,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 11:58:29,509 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 11:58:29,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 11:58:29,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 11:58:29,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 11:58:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 11:58:29,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 11:58:40,966 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 11:58:40,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:58:40 BoogieIcfgContainer [2018-11-07 11:58:40,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 11:58:40,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 11:58:40,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 11:58:40,974 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 11:58:40,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:58:26" (1/3) ... [2018-11-07 11:58:40,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5143e95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:58:40, skipping insertion in model container [2018-11-07 11:58:40,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:58:28" (2/3) ... [2018-11-07 11:58:40,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5143e95a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:58:40, skipping insertion in model container [2018-11-07 11:58:40,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:58:40" (3/3) ... [2018-11-07 11:58:40,978 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label51_false-unreach-call.c [2018-11-07 11:58:40,990 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 11:58:41,003 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 11:58:41,022 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 11:58:41,083 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 11:58:41,083 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 11:58:41,083 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 11:58:41,083 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 11:58:41,084 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 11:58:41,084 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 11:58:41,084 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 11:58:41,084 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 11:58:41,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 11:58:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-07 11:58:41,148 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:58:41,149 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] [2018-11-07 11:58:41,151 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:58:41,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:58:41,157 INFO L82 PathProgramCache]: Analyzing trace with hash -81716397, now seen corresponding path program 1 times [2018-11-07 11:58:41,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:58:41,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:58:41,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:58:41,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:58:41,212 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:58:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:58:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:58:41,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:58:41,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 11:58:41,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:58:41,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 11:58:41,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 11:58:41,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:58:41,757 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 11:58:54,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:58:54,765 INFO L93 Difference]: Finished difference Result 4065 states and 7606 transitions. [2018-11-07 11:58:54,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 11:58:54,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-11-07 11:58:54,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:58:54,823 INFO L225 Difference]: With dead ends: 4065 [2018-11-07 11:58:54,823 INFO L226 Difference]: Without dead ends: 2939 [2018-11-07 11:58:54,840 INFO L604 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 [2018-11-07 11:58:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2018-11-07 11:58:55,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1972. [2018-11-07 11:58:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2018-11-07 11:58:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3594 transitions. [2018-11-07 11:58:55,044 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3594 transitions. Word has length 31 [2018-11-07 11:58:55,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:58:55,045 INFO L480 AbstractCegarLoop]: Abstraction has 1972 states and 3594 transitions. [2018-11-07 11:58:55,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 11:58:55,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3594 transitions. [2018-11-07 11:58:55,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-07 11:58:55,056 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:58:55,056 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:58:55,057 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:58:55,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:58:55,057 INFO L82 PathProgramCache]: Analyzing trace with hash 2132538579, now seen corresponding path program 1 times [2018-11-07 11:58:55,057 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:58:55,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:58:55,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:58:55,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:58:55,060 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:58:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:58:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:58:55,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:58:55,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 11:58:55,674 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:58:55,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 11:58:55,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 11:58:55,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 11:58:55,677 INFO L87 Difference]: Start difference. First operand 1972 states and 3594 transitions. Second operand 6 states. [2018-11-07 11:59:10,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:59:10,705 INFO L93 Difference]: Finished difference Result 7229 states and 13602 transitions. [2018-11-07 11:59:10,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 11:59:10,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-11-07 11:59:10,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:59:10,735 INFO L225 Difference]: With dead ends: 7229 [2018-11-07 11:59:10,735 INFO L226 Difference]: Without dead ends: 5263 [2018-11-07 11:59:10,748 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 11:59:10,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5263 states. [2018-11-07 11:59:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5263 to 5234. [2018-11-07 11:59:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5234 states. [2018-11-07 11:59:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8445 transitions. [2018-11-07 11:59:10,908 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8445 transitions. Word has length 104 [2018-11-07 11:59:10,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:59:10,908 INFO L480 AbstractCegarLoop]: Abstraction has 5234 states and 8445 transitions. [2018-11-07 11:59:10,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 11:59:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8445 transitions. [2018-11-07 11:59:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 11:59:10,916 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:59:10,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:59:10,917 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:59:10,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:59:10,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1105327350, now seen corresponding path program 1 times [2018-11-07 11:59:10,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:59:10,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:10,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:59:10,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:10,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:59:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:59:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:59:11,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:59:11,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 11:59:11,153 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:59:11,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 11:59:11,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 11:59:11,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 11:59:11,154 INFO L87 Difference]: Start difference. First operand 5234 states and 8445 transitions. Second operand 5 states. [2018-11-07 11:59:21,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:59:21,204 INFO L93 Difference]: Finished difference Result 15737 states and 26179 transitions. [2018-11-07 11:59:21,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 11:59:21,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-11-07 11:59:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:59:21,272 INFO L225 Difference]: With dead ends: 15737 [2018-11-07 11:59:21,272 INFO L226 Difference]: Without dead ends: 10509 [2018-11-07 11:59:21,298 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 11:59:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10509 states. [2018-11-07 11:59:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10509 to 10304. [2018-11-07 11:59:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10304 states. [2018-11-07 11:59:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10304 states to 10304 states and 15523 transitions. [2018-11-07 11:59:21,770 INFO L78 Accepts]: Start accepts. Automaton has 10304 states and 15523 transitions. Word has length 133 [2018-11-07 11:59:21,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:59:21,771 INFO L480 AbstractCegarLoop]: Abstraction has 10304 states and 15523 transitions. [2018-11-07 11:59:21,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 11:59:21,771 INFO L276 IsEmpty]: Start isEmpty. Operand 10304 states and 15523 transitions. [2018-11-07 11:59:21,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 11:59:21,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:59:21,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:59:21,780 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:59:21,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:59:21,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1620702082, now seen corresponding path program 1 times [2018-11-07 11:59:21,780 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:59:21,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:21,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:59:21,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:21,782 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:59:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:59:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:59:22,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:59:22,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 11:59:22,115 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:59:22,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 11:59:22,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 11:59:22,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 11:59:22,118 INFO L87 Difference]: Start difference. First operand 10304 states and 15523 transitions. Second operand 5 states. [2018-11-07 11:59:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:59:37,808 INFO L93 Difference]: Finished difference Result 32099 states and 50269 transitions. [2018-11-07 11:59:37,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 11:59:37,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-11-07 11:59:37,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:59:37,900 INFO L225 Difference]: With dead ends: 32099 [2018-11-07 11:59:37,901 INFO L226 Difference]: Without dead ends: 21801 [2018-11-07 11:59:37,951 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 11:59:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21801 states. [2018-11-07 11:59:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21801 to 21582. [2018-11-07 11:59:38,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21582 states. [2018-11-07 11:59:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21582 states to 21582 states and 31840 transitions. [2018-11-07 11:59:38,489 INFO L78 Accepts]: Start accepts. Automaton has 21582 states and 31840 transitions. Word has length 137 [2018-11-07 11:59:38,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:59:38,490 INFO L480 AbstractCegarLoop]: Abstraction has 21582 states and 31840 transitions. [2018-11-07 11:59:38,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 11:59:38,490 INFO L276 IsEmpty]: Start isEmpty. Operand 21582 states and 31840 transitions. [2018-11-07 11:59:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 11:59:38,494 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:59:38,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:59:38,497 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:59:38,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:59:38,497 INFO L82 PathProgramCache]: Analyzing trace with hash 819768018, now seen corresponding path program 1 times [2018-11-07 11:59:38,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:59:38,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:38,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:59:38,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:38,499 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:59:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:59:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:59:38,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:59:38,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 11:59:38,769 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:59:38,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 11:59:38,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 11:59:38,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:59:38,770 INFO L87 Difference]: Start difference. First operand 21582 states and 31840 transitions. Second operand 4 states. [2018-11-07 11:59:49,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:59:49,837 INFO L93 Difference]: Finished difference Result 82852 states and 132541 transitions. [2018-11-07 11:59:49,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 11:59:49,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-11-07 11:59:49,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:59:50,153 INFO L225 Difference]: With dead ends: 82852 [2018-11-07 11:59:50,153 INFO L226 Difference]: Without dead ends: 61276 [2018-11-07 11:59:50,281 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:59:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61276 states. [2018-11-07 11:59:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61276 to 61213. [2018-11-07 11:59:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61213 states. [2018-11-07 11:59:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61213 states to 61213 states and 89349 transitions. [2018-11-07 11:59:51,819 INFO L78 Accepts]: Start accepts. Automaton has 61213 states and 89349 transitions. Word has length 147 [2018-11-07 11:59:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:59:51,819 INFO L480 AbstractCegarLoop]: Abstraction has 61213 states and 89349 transitions. [2018-11-07 11:59:51,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 11:59:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 61213 states and 89349 transitions. [2018-11-07 11:59:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-07 11:59:51,842 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:59:51,844 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 11:59:51,844 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:59:51,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:59:51,845 INFO L82 PathProgramCache]: Analyzing trace with hash -643006826, now seen corresponding path program 1 times [2018-11-07 11:59:51,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:59:51,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:51,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:59:51,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:59:51,846 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:59:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:59:52,169 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 11:59:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 48 proven. 102 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 11:59:52,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 11:59:52,916 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 11:59:52,917 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-11-07 11:59:52,924 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2775], [2777], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3289], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3336], [3341], [3343], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 11:59:52,979 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 11:59:52,980 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 11:59:53,896 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 11:59:53,898 INFO L272 AbstractInterpreter]: Visited 122 different actions 122 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 11:59:53,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:59:53,934 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 11:59:54,925 INFO L227 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 71.16% of their original sizes. [2018-11-07 11:59:54,926 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 11:59:55,648 INFO L415 sIntCurrentIteration]: We unified 256 AI predicates to 256 [2018-11-07 11:59:55,648 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 11:59:55,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 11:59:55,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 11:59:55,649 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:59:55,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 11:59:55,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 11:59:55,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 11:59:55,651 INFO L87 Difference]: Start difference. First operand 61213 states and 89349 transitions. Second operand 11 states. [2018-11-07 12:00:07,383 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