java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:47:24,921 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:47:24,923 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:47:24,935 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:47:24,935 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:47:24,936 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:47:24,937 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:47:24,939 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:47:24,941 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:47:24,942 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:47:24,942 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:47:24,943 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:47:24,943 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:47:24,944 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:47:24,945 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:47:24,946 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:47:24,947 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:47:24,949 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:47:24,951 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:47:24,952 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:47:24,953 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:47:24,954 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:47:24,957 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:47:24,957 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:47:24,957 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:47:24,958 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:47:24,959 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:47:24,960 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:47:24,961 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:47:24,962 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:47:24,962 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:47:24,963 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:47:24,963 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:47:24,963 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:47:24,964 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:47:24,965 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:47:24,965 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:47:24,980 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:47:24,980 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:47:24,981 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:47:24,981 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:47:24,981 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:47:24,982 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:47:24,982 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:47:24,982 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:47:24,982 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:47:24,982 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:47:24,983 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:47:24,983 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:47:24,983 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:47:24,983 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:47:24,984 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:47:24,984 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:47:24,984 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:47:24,984 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:47:24,985 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:47:24,985 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:47:24,985 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:47:24,985 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:47:24,985 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:47:24,986 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:47:24,986 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:47:24,986 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:47:24,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:47:24,986 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:47:24,986 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:47:24,987 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:47:24,987 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:47:24,987 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:47:24,987 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:47:24,987 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:47:24,988 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:47:24,988 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:47:25,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:47:25,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:47:25,044 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:47:25,045 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:47:25,046 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:47:25,046 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c [2018-10-27 07:47:25,107 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ec5d34f24/7d95bfc83e754f0cae1c7a925214d8b0/FLAG770aa2022 [2018-10-27 07:47:25,872 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:47:25,873 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c [2018-10-27 07:47:25,906 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ec5d34f24/7d95bfc83e754f0cae1c7a925214d8b0/FLAG770aa2022 [2018-10-27 07:47:25,926 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ec5d34f24/7d95bfc83e754f0cae1c7a925214d8b0 [2018-10-27 07:47:25,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:47:25,941 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:47:25,944 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:47:25,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:47:25,949 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:47:25,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:47:25" (1/1) ... [2018-10-27 07:47:25,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0d0dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:25, skipping insertion in model container [2018-10-27 07:47:25,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:47:25" (1/1) ... [2018-10-27 07:47:25,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:47:26,137 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:47:27,500 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:47:27,505 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:47:28,048 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:47:28,082 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:47:28,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:28 WrapperNode [2018-10-27 07:47:28,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:47:28,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:47:28,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:47:28,085 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:47:28,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:28" (1/1) ... [2018-10-27 07:47:28,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:28" (1/1) ... [2018-10-27 07:47:28,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:47:28,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:47:28,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:47:28,548 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:47:28,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:28" (1/1) ... [2018-10-27 07:47:28,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:28" (1/1) ... [2018-10-27 07:47:28,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:28" (1/1) ... [2018-10-27 07:47:28,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:28" (1/1) ... [2018-10-27 07:47:28,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:28" (1/1) ... [2018-10-27 07:47:28,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:28" (1/1) ... [2018-10-27 07:47:28,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:28" (1/1) ... [2018-10-27 07:47:28,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:47:28,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:47:28,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:47:28,789 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:47:28,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:47:28,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:47:28,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:47:28,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 07:47:28,860 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 07:47:28,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 07:47:28,860 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 07:47:28,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 07:47:28,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 07:47:28,861 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:47:28,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:47:28,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:47:28,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:47:28,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:47:28,863 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:47:40,794 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:47:40,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:47:40 BoogieIcfgContainer [2018-10-27 07:47:40,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:47:40,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:47:40,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:47:40,799 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:47:40,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:47:25" (1/3) ... [2018-10-27 07:47:40,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22704883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:47:40, skipping insertion in model container [2018-10-27 07:47:40,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:47:28" (2/3) ... [2018-10-27 07:47:40,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22704883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:47:40, skipping insertion in model container [2018-10-27 07:47:40,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:47:40" (3/3) ... [2018-10-27 07:47:40,803 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label41_true-unreach-call.c [2018-10-27 07:47:40,812 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:47:40,821 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:47:40,839 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:47:40,890 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:47:40,891 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:47:40,891 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:47:40,891 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:47:40,891 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:47:40,891 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:47:40,891 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:47:40,891 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:47:40,934 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 07:47:40,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-27 07:47:40,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:47:40,945 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] [2018-10-27 07:47:40,947 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:47:40,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:47:40,953 INFO L82 PathProgramCache]: Analyzing trace with hash -366069493, now seen corresponding path program 1 times [2018-10-27 07:47:40,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:47:41,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:47:41,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:47:41,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:47:41,008 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:47:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:47:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:47:41,473 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:47:41,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:47:41,474 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:47:41,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:47:41,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:47:41,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:47:41,501 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 07:47:50,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:47:50,057 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 07:47:50,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:47:50,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-10-27 07:47:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:47:50,094 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 07:47:50,094 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 07:47:50,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:47:50,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 07:47:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 07:47:50,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 07:47:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-10-27 07:47:50,286 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 59 [2018-10-27 07:47:50,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:47:50,287 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-10-27 07:47:50,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:47:50,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-10-27 07:47:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-27 07:47:50,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:47:50,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:47:50,301 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:47:50,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:47:50,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1469474424, now seen corresponding path program 1 times [2018-10-27 07:47:50,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:47:50,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:47:50,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:47:50,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:47:50,305 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:47:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:47:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 45 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:47:50,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:47:50,728 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:47:50,729 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-10-27 07:47:50,732 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2239], [2241], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:47:50,795 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:47:50,796 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:47:51,400 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:47:51,403 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 07:47:51,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:47:51,446 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:47:51,933 INFO L227 lantSequenceWeakener]: Weakened 132 states. On average, predicates are now at 76.22% of their original sizes. [2018-10-27 07:47:51,933 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:47:52,675 INFO L415 sIntCurrentIteration]: We unified 134 AI predicates to 134 [2018-10-27 07:47:52,675 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:47:52,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:47:52,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-10-27 07:47:52,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:47:52,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:47:52,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:47:52,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:47:52,679 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown