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/Problem17_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:25:21,816 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:25:21,819 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:25:21,835 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:25:21,835 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:25:21,837 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:25:21,839 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:25:21,841 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:25:21,844 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:25:21,845 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:25:21,852 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:25:21,852 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:25:21,854 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:25:21,854 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:25:21,858 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:25:21,859 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:25:21,860 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:25:21,864 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:25:21,868 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:25:21,869 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:25:21,870 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:25:21,875 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:25:21,878 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:25:21,879 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:25:21,879 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:25:21,880 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:25:21,881 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:25:21,883 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:25:21,884 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:25:21,887 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:25:21,887 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:25:21,888 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 09:25:21,892 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 09:25:21,919 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:25:21,920 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:25:21,921 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:25:21,921 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:25:21,921 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:25:21,921 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:25:21,921 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:25:21,922 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:25:21,922 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:25:21,923 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:25:21,923 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:25:21,923 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:25:21,923 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:25:21,923 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:25:21,924 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:25:21,924 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:25:21,924 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:25:21,925 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:25:21,925 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:25:21,925 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:25:21,925 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:25:21,925 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:25:21,927 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:25:21,927 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:25:21,927 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:25:21,928 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:25:21,928 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:25:21,928 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:25:21,928 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:25:21,928 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:25:21,929 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:25:21,929 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:25:21,929 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:25:21,929 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:25:21,929 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:25:21,930 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:25:22,003 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:25:22,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:25:22,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:25:22,022 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:25:22,022 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:25:22,023 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label10_true-unreach-call.c [2018-11-07 09:25:22,091 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a69318a4/fe3b0ca69da24825b9dd0e286d97a95c/FLAG79da9037b [2018-11-07 09:25:22,764 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:25:22,765 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label10_true-unreach-call.c [2018-11-07 09:25:22,794 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a69318a4/fe3b0ca69da24825b9dd0e286d97a95c/FLAG79da9037b [2018-11-07 09:25:22,814 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a69318a4/fe3b0ca69da24825b9dd0e286d97a95c [2018-11-07 09:25:22,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:25:22,828 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:25:22,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:25:22,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:25:22,836 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:25:22,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:25:22" (1/1) ... [2018-11-07 09:25:22,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:22, skipping insertion in model container [2018-11-07 09:25:22,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:25:22" (1/1) ... [2018-11-07 09:25:22,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:25:22,992 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:25:24,051 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:25:24,056 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:25:24,426 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:25:24,451 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:25:24,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:24 WrapperNode [2018-11-07 09:25:24,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:25:24,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:25:24,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:25:24,453 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:25:24,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:24" (1/1) ... [2018-11-07 09:25:24,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:24" (1/1) ... [2018-11-07 09:25:24,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:25:24,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:25:24,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:25:24,729 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:25:24,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:24" (1/1) ... [2018-11-07 09:25:24,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:24" (1/1) ... [2018-11-07 09:25:24,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:24" (1/1) ... [2018-11-07 09:25:24,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:24" (1/1) ... [2018-11-07 09:25:24,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:24" (1/1) ... [2018-11-07 09:25:24,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:24" (1/1) ... [2018-11-07 09:25:24,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:24" (1/1) ... [2018-11-07 09:25:24,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:25:24,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:25:24,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:25:24,941 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:25:24,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:24" (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 09:25:25,009 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:25:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:25:25,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:25:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:25:25,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:25:25,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:25:25,011 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:25:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:25:25,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:25:25,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:25:25,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:25:34,022 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:25:34,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:25:34 BoogieIcfgContainer [2018-11-07 09:25:34,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:25:34,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:25:34,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:25:34,028 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:25:34,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:25:22" (1/3) ... [2018-11-07 09:25:34,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496d431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:25:34, skipping insertion in model container [2018-11-07 09:25:34,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:24" (2/3) ... [2018-11-07 09:25:34,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496d431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:25:34, skipping insertion in model container [2018-11-07 09:25:34,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:25:34" (3/3) ... [2018-11-07 09:25:34,033 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label10_true-unreach-call.c [2018-11-07 09:25:34,045 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:25:34,061 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:25:34,079 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:25:34,135 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:25:34,135 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:25:34,136 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:25:34,136 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:25:34,136 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:25:34,136 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:25:34,136 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:25:34,137 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:25:34,177 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 09:25:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-07 09:25:34,186 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:25:34,187 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] [2018-11-07 09:25:34,189 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:25:34,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:25:34,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1853097852, now seen corresponding path program 1 times [2018-11-07 09:25:34,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:25:34,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:34,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:25:34,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:34,253 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:25:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:25:34,741 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 09:25:34,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:25:34,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:25:34,744 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:25:34,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:25:34,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:25:34,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:25:34,769 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 09:25:43,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:25:43,859 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-11-07 09:25:43,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:25:43,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-11-07 09:25:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:25:43,895 INFO L225 Difference]: With dead ends: 2139 [2018-11-07 09:25:43,895 INFO L226 Difference]: Without dead ends: 1529 [2018-11-07 09:25:43,908 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 09:25:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-11-07 09:25:44,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-11-07 09:25:44,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-11-07 09:25:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-11-07 09:25:44,078 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 46 [2018-11-07 09:25:44,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:25:44,079 INFO L480 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-11-07 09:25:44,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:25:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-11-07 09:25:44,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 09:25:44,086 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:25:44,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:25:44,087 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:25:44,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:25:44,087 INFO L82 PathProgramCache]: Analyzing trace with hash -180836774, now seen corresponding path program 1 times [2018-11-07 09:25:44,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:25:44,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:44,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:25:44,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:44,089 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:25:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:25:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:25:44,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:25:44,462 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:25:44,463 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 122 with the following transitions: [2018-11-07 09:25:44,465 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [978], [980], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:25:44,536 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:25:44,536 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:25:45,635 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:25:45,638 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:25:45,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:25:45,685 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:25:45,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:25:45,686 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:25:45,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:25:45,702 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:25:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:25:45,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:26:46,968 WARN L179 SmtUtils]: Spent 1.01 m on a formula simplification. DAG size of input: 147 DAG size of output: 91 [2018-11-07 09:26:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:49,479 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:26:50,503 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 09:26:50,507 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-11-07 09:26:50,706 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 376