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/Problem19_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:58:20,839 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:58:20,841 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:58:20,855 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:58:20,856 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:58:20,857 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:58:20,858 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:58:20,860 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:58:20,862 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:58:20,863 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:58:20,864 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:58:20,864 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:58:20,865 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:58:20,867 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:58:20,868 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:58:20,869 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:58:20,869 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:58:20,871 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:58:20,874 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:58:20,876 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:58:20,880 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:58:20,881 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:58:20,884 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:58:20,884 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:58:20,884 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:58:20,888 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:58:20,894 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:58:20,895 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:58:20,895 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:58:20,897 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:58:20,897 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:58:20,901 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:58:20,901 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:58:20,901 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:58:20,902 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:58:20,903 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:58:20,903 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 15:58:20,930 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:58:20,930 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:58:20,931 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:58:20,931 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:58:20,932 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:58:20,935 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:58:20,935 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:58:20,935 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:58:20,935 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:58:20,936 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:58:20,936 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:58:20,936 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:58:20,937 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:58:20,937 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:58:20,938 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:58:20,938 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:58:20,938 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:58:20,938 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:58:20,938 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:58:20,939 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:58:20,940 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:58:20,940 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:58:20,940 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:58:20,940 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:58:20,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:58:20,941 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:58:20,941 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:58:20,941 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:58:20,941 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:58:20,942 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:58:20,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:58:20,942 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:58:20,942 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:58:20,942 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:58:20,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:58:21,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:58:21,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:58:21,022 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:58:21,022 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:58:21,023 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label56_true-unreach-call.c [2018-11-07 15:58:21,083 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5bc185b/dfc3e5a5671c4b6fae7eb6af7a0b470d/FLAG2a0318d8f [2018-11-07 15:58:21,952 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:58:21,954 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label56_true-unreach-call.c [2018-11-07 15:58:22,007 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5bc185b/dfc3e5a5671c4b6fae7eb6af7a0b470d/FLAG2a0318d8f [2018-11-07 15:58:22,026 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5bc185b/dfc3e5a5671c4b6fae7eb6af7a0b470d [2018-11-07 15:58:22,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:58:22,041 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:58:22,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:58:22,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:58:22,048 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:58:22,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:58:22" (1/1) ... [2018-11-07 15:58:22,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a14655d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:22, skipping insertion in model container [2018-11-07 15:58:22,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:58:22" (1/1) ... [2018-11-07 15:58:22,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:58:22,294 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:58:24,334 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:58:24,342 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:58:25,479 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:58:25,544 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:58:25,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:25 WrapperNode [2018-11-07 15:58:25,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:58:25,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:58:25,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:58:25,546 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:58:25,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:25" (1/1) ... [2018-11-07 15:58:26,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:25" (1/1) ... [2018-11-07 15:58:26,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:58:26,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:58:26,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:58:26,088 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:58:26,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:25" (1/1) ... [2018-11-07 15:58:26,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:25" (1/1) ... [2018-11-07 15:58:26,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:25" (1/1) ... [2018-11-07 15:58:26,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:25" (1/1) ... [2018-11-07 15:58:26,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:25" (1/1) ... [2018-11-07 15:58:26,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:25" (1/1) ... [2018-11-07 15:58:26,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:25" (1/1) ... [2018-11-07 15:58:26,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:58:26,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:58:26,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:58:26,464 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:58:26,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:25" (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 15:58:26,534 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:58:26,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:58:26,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:58:26,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 15:58:26,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 15:58:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 15:58:26,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 15:58:26,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 15:58:26,535 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 15:58:26,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:58:26,536 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:58:26,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:58:26,536 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:58:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:58:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:58:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:58:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:58:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:58:26,537 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:58:42,328 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:58:42,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:58:42 BoogieIcfgContainer [2018-11-07 15:58:42,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:58:42,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:58:42,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:58:42,333 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:58:42,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:58:22" (1/3) ... [2018-11-07 15:58:42,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed584cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:58:42, skipping insertion in model container [2018-11-07 15:58:42,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:25" (2/3) ... [2018-11-07 15:58:42,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed584cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:58:42, skipping insertion in model container [2018-11-07 15:58:42,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:58:42" (3/3) ... [2018-11-07 15:58:42,337 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label56_true-unreach-call.c [2018-11-07 15:58:42,347 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:58:42,357 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:58:42,375 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:58:42,427 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:58:42,427 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:58:42,427 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:58:42,428 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:58:42,428 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:58:42,428 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:58:42,428 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:58:42,428 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:58:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 15:58:42,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-07 15:58:42,497 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:58:42,498 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] [2018-11-07 15:58:42,501 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:58:42,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:58:42,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1524406668, now seen corresponding path program 1 times [2018-11-07 15:58:42,510 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:58:42,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:42,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:58:42,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:58:42,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:58:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:58:43,119 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 15:58:43,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:58:43,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:58:43,122 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:58:43,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:58:43,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:58:43,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:58:43,150 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-07 15:59:04,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:59:04,824 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-11-07 15:59:04,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:59:04,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-11-07 15:59:04,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:59:04,877 INFO L225 Difference]: With dead ends: 6513 [2018-11-07 15:59:04,877 INFO L226 Difference]: Without dead ends: 4729 [2018-11-07 15:59:04,899 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 15:59:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-11-07 15:59:05,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-11-07 15:59:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-11-07 15:59:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-11-07 15:59:05,270 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 58 [2018-11-07 15:59:05,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:59:05,271 INFO L480 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-11-07 15:59:05,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:59:05,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-11-07 15:59:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 15:59:05,284 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:59:05,285 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, 1, 1, 1, 1, 1, 1, 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 15:59:05,285 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:59:05,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:59:05,286 INFO L82 PathProgramCache]: Analyzing trace with hash 650916201, now seen corresponding path program 1 times [2018-11-07 15:59:05,286 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:59:05,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:05,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:59:05,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:05,288 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:59:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:59:05,633 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:59:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:59:05,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:59:05,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:59:05,719 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:59:05,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:59:05,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:59:05,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:59:05,723 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-11-07 15:59:31,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:59:31,664 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-11-07 15:59:31,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:59:31,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-11-07 15:59:31,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:59:31,740 INFO L225 Difference]: With dead ends: 17886 [2018-11-07 15:59:31,740 INFO L226 Difference]: Without dead ends: 13199 [2018-11-07 15:59:31,760 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 15:59:31,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-11-07 15:59:32,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-11-07 15:59:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-11-07 15:59:32,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19368 transitions. [2018-11-07 15:59:32,067 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19368 transitions. Word has length 130 [2018-11-07 15:59:32,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:59:32,068 INFO L480 AbstractCegarLoop]: Abstraction has 13130 states and 19368 transitions. [2018-11-07 15:59:32,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:59:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19368 transitions. [2018-11-07 15:59:32,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 15:59:32,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:59:32,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:59:32,074 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:59:32,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:59:32,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1399116121, now seen corresponding path program 1 times [2018-11-07 15:59:32,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:59:32,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:32,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:59:32,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:32,076 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:59:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:59:32,488 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:59:32,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:59:32,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:59:32,489 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:59:32,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:59:32,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:59:32,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:59:32,495 INFO L87 Difference]: Start difference. First operand 13130 states and 19368 transitions. Second operand 6 states. [2018-11-07 15:59:48,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:59:48,600 INFO L93 Difference]: Finished difference Result 39956 states and 60354 transitions. [2018-11-07 15:59:48,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 15:59:48,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 15:59:48,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:59:48,705 INFO L225 Difference]: With dead ends: 39956 [2018-11-07 15:59:48,705 INFO L226 Difference]: Without dead ends: 26832 [2018-11-07 15:59:48,747 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 15:59:48,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26832 states. [2018-11-07 15:59:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26832 to 26548. [2018-11-07 15:59:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26548 states. [2018-11-07 15:59:49,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26548 states to 26548 states and 38657 transitions. [2018-11-07 15:59:49,401 INFO L78 Accepts]: Start accepts. Automaton has 26548 states and 38657 transitions. Word has length 140 [2018-11-07 15:59:49,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:59:49,402 INFO L480 AbstractCegarLoop]: Abstraction has 26548 states and 38657 transitions. [2018-11-07 15:59:49,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:59:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 26548 states and 38657 transitions. [2018-11-07 15:59:49,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-07 15:59:49,406 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:59:49,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:59:49,411 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:59:49,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:59:49,411 INFO L82 PathProgramCache]: Analyzing trace with hash 564505847, now seen corresponding path program 1 times [2018-11-07 15:59:49,412 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:59:49,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:49,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:59:49,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:59:49,413 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:59:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:59:49,766 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:59:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:59:50,186 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:59:50,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:59:50,186 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:59:50,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:59:50,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:59:50,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:59:50,190 INFO L87 Difference]: Start difference. First operand 26548 states and 38657 transitions. Second operand 6 states. [2018-11-07 16:00:08,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:00:08,767 INFO L93 Difference]: Finished difference Result 70560 states and 106744 transitions. [2018-11-07 16:00:08,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 16:00:08,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-11-07 16:00:08,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:00:08,924 INFO L225 Difference]: With dead ends: 70560 [2018-11-07 16:00:08,924 INFO L226 Difference]: Without dead ends: 44018 [2018-11-07 16:00:09,031 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 16:00:09,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44018 states. [2018-11-07 16:00:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44018 to 43867. [2018-11-07 16:00:10,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43867 states. [2018-11-07 16:00:10,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43867 states to 43867 states and 61111 transitions. [2018-11-07 16:00:10,225 INFO L78 Accepts]: Start accepts. Automaton has 43867 states and 61111 transitions. Word has length 173 [2018-11-07 16:00:10,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:00:10,226 INFO L480 AbstractCegarLoop]: Abstraction has 43867 states and 61111 transitions. [2018-11-07 16:00:10,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 16:00:10,226 INFO L276 IsEmpty]: Start isEmpty. Operand 43867 states and 61111 transitions. [2018-11-07 16:00:10,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-07 16:00:10,232 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:00:10,233 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, 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] [2018-11-07 16:00:10,233 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:00:10,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:00:10,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1395186466, now seen corresponding path program 1 times [2018-11-07 16:00:10,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:00:10,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:00:10,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:00:10,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:00:10,237 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:00:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:00:10,503 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 16:00:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 102 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 16:00:10,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:00:10,898 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 16:00:10,899 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-11-07 16:00:10,901 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5590], [5592], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 16:00:10,958 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 16:00:10,958 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 16:00:11,405 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 16:00:11,406 INFO L272 AbstractInterpreter]: Visited 84 different actions 84 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 16:00:11,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:00:11,459 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 16:00:11,976 INFO L227 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 75.75% of their original sizes. [2018-11-07 16:00:11,977 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 16:00:12,324 INFO L415 sIntCurrentIteration]: We unified 208 AI predicates to 208 [2018-11-07 16:00:12,325 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 16:00:12,326 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 16:00:12,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 16:00:12,328 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:00:12,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 16:00:12,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 16:00:12,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 16:00:12,329 INFO L87 Difference]: Start difference. First operand 43867 states and 61111 transitions. Second operand 7 states. [2018-11-07 16:00:18,172 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