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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:53:49,737 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:53:49,740 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:53:49,756 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:53:49,756 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:53:49,757 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:53:49,761 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:53:49,764 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:53:49,765 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:53:49,769 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:53:49,770 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:53:49,772 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:53:49,773 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:53:49,775 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:53:49,776 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:53:49,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:53:49,779 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:53:49,788 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:53:49,792 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:53:49,794 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:53:49,795 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:53:49,796 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:53:49,799 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:53:49,799 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:53:49,800 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:53:49,800 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:53:49,802 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:53:49,802 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:53:49,806 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:53:49,807 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:53:49,808 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:53:49,808 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:53:49,808 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:53:49,809 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:53:49,811 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:53:49,811 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:53:49,812 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:53:49,839 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:53:49,840 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:53:49,840 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:53:49,843 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:53:49,843 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:53:49,844 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:53:49,844 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:53:49,844 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:53:49,844 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:53:49,844 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:53:49,845 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:53:49,845 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:53:49,846 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:53:49,846 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:53:49,847 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:53:49,847 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:53:49,847 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:53:49,847 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:53:49,847 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:53:49,848 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:53:49,849 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:53:49,849 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:53:49,850 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:53:49,850 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:53:49,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:53:49,850 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:53:49,850 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:53:49,851 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:53:49,851 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:53:49,851 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:53:49,851 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:53:49,851 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:53:49,852 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:53:49,852 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:53:49,911 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:53:49,927 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:53:49,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:53:49,933 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:53:49,933 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:53:49,934 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label01_true-unreach-call.c [2018-10-27 14:53:50,002 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/235373aa8/f4914cdbbcbe4e66a0ebaf9f32835f31/FLAG5ac45779b [2018-10-27 14:53:50,685 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:53:50,686 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label01_true-unreach-call.c [2018-10-27 14:53:50,723 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/235373aa8/f4914cdbbcbe4e66a0ebaf9f32835f31/FLAG5ac45779b [2018-10-27 14:53:50,743 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/235373aa8/f4914cdbbcbe4e66a0ebaf9f32835f31 [2018-10-27 14:53:50,757 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:53:50,759 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:53:50,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:53:50,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:53:50,768 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:53:50,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:53:50" (1/1) ... [2018-10-27 14:53:50,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19392d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:50, skipping insertion in model container [2018-10-27 14:53:50,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:53:50" (1/1) ... [2018-10-27 14:53:50,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:53:50,924 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:53:51,913 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:53:51,918 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:53:52,317 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:53:52,338 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:53:52,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:52 WrapperNode [2018-10-27 14:53:52,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:53:52,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:53:52,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:53:52,341 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:53:52,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:52" (1/1) ... [2018-10-27 14:53:52,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:52" (1/1) ... [2018-10-27 14:53:52,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:53:52,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:53:52,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:53:52,888 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:53:52,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:52" (1/1) ... [2018-10-27 14:53:52,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:52" (1/1) ... [2018-10-27 14:53:52,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:52" (1/1) ... [2018-10-27 14:53:52,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:52" (1/1) ... [2018-10-27 14:53:53,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:52" (1/1) ... [2018-10-27 14:53:53,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:52" (1/1) ... [2018-10-27 14:53:53,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:52" (1/1) ... [2018-10-27 14:53:53,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:53:53,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:53:53,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:53:53,203 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:53:53,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:52" (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 14:53:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:53:53,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:53:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:53:53,276 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:53:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:53:53,276 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:53:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:53:53,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:53:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:53:53,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:54:04,966 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:54:04,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:54:04 BoogieIcfgContainer [2018-10-27 14:54:04,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:54:04,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:54:04,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:54:04,972 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:54:04,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:53:50" (1/3) ... [2018-10-27 14:54:04,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d391cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:54:04, skipping insertion in model container [2018-10-27 14:54:04,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:53:52" (2/3) ... [2018-10-27 14:54:04,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d391cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:54:04, skipping insertion in model container [2018-10-27 14:54:04,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:54:04" (3/3) ... [2018-10-27 14:54:04,976 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label01_true-unreach-call.c [2018-10-27 14:54:04,986 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:54:04,996 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:54:05,014 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:54:05,058 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:54:05,058 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:54:05,059 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:54:05,059 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:54:05,059 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:54:05,059 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:54:05,059 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:54:05,059 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:54:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 14:54:05,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-27 14:54:05,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:54:05,114 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] [2018-10-27 14:54:05,117 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:54:05,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:54:05,123 INFO L82 PathProgramCache]: Analyzing trace with hash -412274706, now seen corresponding path program 1 times [2018-10-27 14:54:05,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:54:05,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:54:05,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:54:05,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:54:05,181 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:54:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:54:05,770 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 14:54:05,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:54:05,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:54:05,773 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:54:05,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:54:05,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:54:05,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:54:05,798 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 14:54:17,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:54:17,663 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-10-27 14:54:17,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:54:17,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-10-27 14:54:17,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:54:17,700 INFO L225 Difference]: With dead ends: 2139 [2018-10-27 14:54:17,700 INFO L226 Difference]: Without dead ends: 1529 [2018-10-27 14:54:17,710 INFO L605 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 [2018-10-27 14:54:17,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-10-27 14:54:17,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-10-27 14:54:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-10-27 14:54:17,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-10-27 14:54:17,863 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 53 [2018-10-27 14:54:17,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:54:17,864 INFO L481 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-10-27 14:54:17,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:54:17,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-10-27 14:54:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-27 14:54:17,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:54:17,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:17,877 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:54:17,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:54:17,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1326175065, now seen corresponding path program 1 times [2018-10-27 14:54:17,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:54:17,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:54:17,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:54:17,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:54:17,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:54:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:54:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:54:18,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:54:18,415 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:54:18,416 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 129 with the following transitions: [2018-10-27 14:54:18,418 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], [982], [990], [998], [1006], [1014], [1022], [1030], [1034], [1036], [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] [2018-10-27 14:54:18,461 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:54:18,462 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:54:18,810 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:54:21,576 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:54:21,578 INFO L272 AbstractInterpreter]: Visited 82 different actions 462 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 14:54:21,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:54:21,620 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:54:22,329 INFO L227 lantSequenceWeakener]: Weakened 125 states. On average, predicates are now at 76.06% of their original sizes. [2018-10-27 14:54:22,329 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:54:22,807 INFO L415 sIntCurrentIteration]: We unified 127 AI predicates to 127 [2018-10-27 14:54:22,807 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:54:22,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:54:22,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-27 14:54:22,809 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:54:22,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 14:54:22,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 14:54:22,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:54:22,811 INFO L87 Difference]: Start difference. First operand 1527 states and 2413 transitions. Second operand 9 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown