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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:47:26,839 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:47:26,841 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:47:26,860 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:47:26,860 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:47:26,861 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:47:26,863 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:47:26,866 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:47:26,867 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:47:26,869 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:47:26,872 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:47:26,872 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:47:26,873 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:47:26,874 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:47:26,875 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:47:26,875 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:47:26,876 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:47:26,878 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:47:26,880 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:47:26,882 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:47:26,883 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:47:26,884 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:47:26,887 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:47:26,887 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:47:26,887 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:47:26,888 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:47:26,889 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:47:26,890 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:47:26,891 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:47:26,892 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:47:26,892 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:47:26,893 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 08:47:26,896 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:47:26,927 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:47:26,927 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:47:26,928 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:47:26,928 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:47:26,928 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:47:26,928 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:47:26,929 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:47:26,930 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:47:26,930 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:47:26,930 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:47:26,930 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:47:26,930 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:47:26,931 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:47:26,931 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:47:26,932 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:47:26,932 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:47:26,933 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:47:26,933 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:47:26,933 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:47:26,933 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:47:26,933 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:47:26,933 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:47:26,934 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:47:26,934 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:47:26,934 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:47:26,934 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:47:26,935 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:47:26,935 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:47:26,935 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:47:26,935 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:47:26,935 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:47:26,936 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:47:26,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:47:26,936 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:47:26,936 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:47:26,936 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:47:27,003 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:47:27,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:47:27,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:47:27,026 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:47:27,027 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:47:27,027 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-11-07 08:47:27,109 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/580576063/71cf2c8a01e445d0af111ad935572bc3/FLAGa42f0ca7a [2018-11-07 08:47:27,884 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:47:27,885 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-11-07 08:47:27,930 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/580576063/71cf2c8a01e445d0af111ad935572bc3/FLAGa42f0ca7a [2018-11-07 08:47:27,955 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/580576063/71cf2c8a01e445d0af111ad935572bc3 [2018-11-07 08:47:27,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:47:27,970 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:47:27,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:47:27,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:47:27,979 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:47:27,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:47:27" (1/1) ... [2018-11-07 08:47:27,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5342db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:27, skipping insertion in model container [2018-11-07 08:47:27,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:47:27" (1/1) ... [2018-11-07 08:47:27,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:47:28,198 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:47:29,765 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:47:29,771 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:47:30,525 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:47:30,561 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:47:30,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:30 WrapperNode [2018-11-07 08:47:30,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:47:30,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:47:30,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:47:30,565 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:47:30,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:30" (1/1) ... [2018-11-07 08:47:30,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:30" (1/1) ... [2018-11-07 08:47:30,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:47:30,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:47:30,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:47:30,946 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:47:30,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:30" (1/1) ... [2018-11-07 08:47:30,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:30" (1/1) ... [2018-11-07 08:47:31,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:30" (1/1) ... [2018-11-07 08:47:31,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:30" (1/1) ... [2018-11-07 08:47:31,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:30" (1/1) ... [2018-11-07 08:47:31,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:30" (1/1) ... [2018-11-07 08:47:31,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:30" (1/1) ... [2018-11-07 08:47:31,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:47:31,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:47:31,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:47:31,263 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:47:31,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:30" (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 08:47:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:47:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:47:31,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:47:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:47:31,337 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:47:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:47:31,338 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:47:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:47:31,338 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:47:31,338 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:47:31,339 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:47:31,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:47:31,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:47:31,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:47:31,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:47:43,094 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:47:43,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:47:43 BoogieIcfgContainer [2018-11-07 08:47:43,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:47:43,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:47:43,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:47:43,099 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:47:43,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:47:27" (1/3) ... [2018-11-07 08:47:43,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6210ee82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:47:43, skipping insertion in model container [2018-11-07 08:47:43,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:47:30" (2/3) ... [2018-11-07 08:47:43,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6210ee82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:47:43, skipping insertion in model container [2018-11-07 08:47:43,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:47:43" (3/3) ... [2018-11-07 08:47:43,103 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label09_true-unreach-call.c [2018-11-07 08:47:43,113 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:47:43,124 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:47:43,142 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:47:43,197 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:47:43,197 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:47:43,198 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:47:43,198 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:47:43,198 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:47:43,198 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:47:43,198 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:47:43,198 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:47:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 08:47:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-07 08:47:43,253 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:47:43,255 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:47:43,257 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:47:43,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:47:43,264 INFO L82 PathProgramCache]: Analyzing trace with hash 688094243, now seen corresponding path program 1 times [2018-11-07 08:47:43,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:47:43,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:47:43,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:47:43,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:47:43,328 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:47:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:47:43,856 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:47:43,984 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 08:47:43,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:47:43,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:47:43,988 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:47:43,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:47:44,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:47:44,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:47:44,014 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 08:47:52,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:47:52,089 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-07 08:47:52,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:47:52,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-11-07 08:47:52,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:47:52,135 INFO L225 Difference]: With dead ends: 3097 [2018-11-07 08:47:52,136 INFO L226 Difference]: Without dead ends: 1975 [2018-11-07 08:47:52,148 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:47:52,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-07 08:47:52,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-07 08:47:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-07 08:47:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-07 08:47:52,316 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 67 [2018-11-07 08:47:52,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:47:52,317 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-07 08:47:52,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:47:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-07 08:47:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 08:47:52,334 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:47:52,335 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 08:47:52,335 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:47:52,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:47:52,335 INFO L82 PathProgramCache]: Analyzing trace with hash 758431250, now seen corresponding path program 1 times [2018-11-07 08:47:52,338 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:47:52,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:47:52,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:47:52,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:47:52,339 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:47:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:47:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:47:52,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:47:52,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:47:52,584 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:47:52,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:47:52,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:47:52,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:47:52,587 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-07 08:48:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:48:06,688 INFO L93 Difference]: Finished difference Result 5733 states and 9688 transitions. [2018-11-07 08:48:06,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:48:06,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-11-07 08:48:06,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:48:06,716 INFO L225 Difference]: With dead ends: 5733 [2018-11-07 08:48:06,717 INFO L226 Difference]: Without dead ends: 3765 [2018-11-07 08:48:06,724 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:48:06,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2018-11-07 08:48:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3682. [2018-11-07 08:48:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3682 states. [2018-11-07 08:48:06,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 5656 transitions. [2018-11-07 08:48:06,860 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 5656 transitions. Word has length 143 [2018-11-07 08:48:06,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:48:06,860 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 5656 transitions. [2018-11-07 08:48:06,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:48:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 5656 transitions. [2018-11-07 08:48:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 08:48:06,871 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:48:06,871 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:48:06,872 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:48:06,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:48:06,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2052836206, now seen corresponding path program 1 times [2018-11-07 08:48:06,872 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:48:06,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:48:06,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:48:06,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:48:06,875 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:48:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:48:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:48:07,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:48:07,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:48:07,051 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:48:07,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:48:07,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:48:07,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:48:07,053 INFO L87 Difference]: Start difference. First operand 3682 states and 5656 transitions. Second operand 5 states. [2018-11-07 08:48:23,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:48:23,223 INFO L93 Difference]: Finished difference Result 13649 states and 21728 transitions. [2018-11-07 08:48:23,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:48:23,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2018-11-07 08:48:23,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:48:23,284 INFO L225 Difference]: With dead ends: 13649 [2018-11-07 08:48:23,284 INFO L226 Difference]: Without dead ends: 9973 [2018-11-07 08:48:23,312 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:48:23,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2018-11-07 08:48:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9786. [2018-11-07 08:48:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9786 states. [2018-11-07 08:48:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9786 states to 9786 states and 14482 transitions. [2018-11-07 08:48:23,609 INFO L78 Accepts]: Start accepts. Automaton has 9786 states and 14482 transitions. Word has length 157 [2018-11-07 08:48:23,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:48:23,609 INFO L480 AbstractCegarLoop]: Abstraction has 9786 states and 14482 transitions. [2018-11-07 08:48:23,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:48:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 9786 states and 14482 transitions. [2018-11-07 08:48:23,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-07 08:48:23,618 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:48:23,618 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:48:23,618 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:48:23,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:48:23,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2003299502, now seen corresponding path program 1 times [2018-11-07 08:48:23,619 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:48:23,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:48:23,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:48:23,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:48:23,621 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:48:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:48:23,976 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:48:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:48:24,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:48:24,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:48:24,377 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:48:24,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:48:24,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:48:24,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:48:24,379 INFO L87 Difference]: Start difference. First operand 9786 states and 14482 transitions. Second operand 6 states. [2018-11-07 08:48:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:48:36,682 INFO L93 Difference]: Finished difference Result 34080 states and 53558 transitions. [2018-11-07 08:48:36,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:48:36,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-11-07 08:48:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:48:36,797 INFO L225 Difference]: With dead ends: 34080 [2018-11-07 08:48:36,797 INFO L226 Difference]: Without dead ends: 24300 [2018-11-07 08:48:36,868 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:48:36,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24300 states. [2018-11-07 08:48:37,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24300 to 24072. [2018-11-07 08:48:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24072 states. [2018-11-07 08:48:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24072 states to 24072 states and 33884 transitions. [2018-11-07 08:48:37,499 INFO L78 Accepts]: Start accepts. Automaton has 24072 states and 33884 transitions. Word has length 175 [2018-11-07 08:48:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:48:37,499 INFO L480 AbstractCegarLoop]: Abstraction has 24072 states and 33884 transitions. [2018-11-07 08:48:37,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:48:37,500 INFO L276 IsEmpty]: Start isEmpty. Operand 24072 states and 33884 transitions. [2018-11-07 08:48:37,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-11-07 08:48:37,525 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:48:37,525 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 08:48:37,526 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:48:37,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:48:37,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1822344931, now seen corresponding path program 1 times [2018-11-07 08:48:37,526 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:48:37,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:48:37,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:48:37,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:48:37,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:48:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:48:37,873 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:48:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 120 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:48:38,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:48:38,268 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:48:38,271 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-11-07 08:48:38,273 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3063], [3065], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3140], [3143], [3147], [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], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3443], [3448], [3450], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:48:38,354 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:48:38,354 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:48:38,987 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:48:38,989 INFO L272 AbstractInterpreter]: Visited 140 different actions 140 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:48:39,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:48:39,025 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:48:39,629 INFO L227 lantSequenceWeakener]: Weakened 268 states. On average, predicates are now at 71.5% of their original sizes. [2018-11-07 08:48:39,629 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:48:39,892 INFO L415 sIntCurrentIteration]: We unified 280 AI predicates to 280 [2018-11-07 08:48:39,892 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:48:39,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:48:39,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:48:39,895 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:48:39,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:48:39,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:48:39,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:48:39,896 INFO L87 Difference]: Start difference. First operand 24072 states and 33884 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown