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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label38_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:09:44,976 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:09:44,978 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:09:44,991 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:09:44,991 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:09:44,993 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:09:44,994 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:09:44,996 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:09:44,997 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:09:44,998 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:09:44,999 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:09:44,999 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:09:45,000 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:09:45,002 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:09:45,003 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:09:45,004 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:09:45,004 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:09:45,006 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:09:45,009 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:09:45,010 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:09:45,012 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:09:45,013 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:09:45,015 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:09:45,016 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:09:45,016 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:09:45,017 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:09:45,019 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:09:45,019 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:09:45,020 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:09:45,023 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:09:45,023 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:09:45,024 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:09:45,024 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:09:45,025 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:09:45,026 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:09:45,030 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:09:45,030 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 00:09:45,063 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:09:45,063 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:09:45,066 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:09:45,066 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:09:45,067 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:09:45,067 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:09:45,067 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:09:45,067 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:09:45,067 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:09:45,068 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:09:45,068 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:09:45,068 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:09:45,069 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:09:45,070 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:09:45,070 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:09:45,070 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:09:45,070 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:09:45,071 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:09:45,071 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:09:45,071 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:09:45,071 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:09:45,071 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:09:45,072 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:09:45,073 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:09:45,073 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:09:45,073 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:09:45,073 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:09:45,074 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:09:45,074 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:09:45,074 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:09:45,075 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:09:45,075 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:09:45,075 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:09:45,075 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:09:45,149 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:09:45,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:09:45,170 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:09:45,172 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:09:45,172 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:09:45,173 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label38_false-unreach-call.c [2018-10-27 00:09:45,248 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/27fb11559/1ba71b41949a4961bed76f4a87eb55b8/FLAG61dae373d [2018-10-27 00:09:45,933 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:09:45,935 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label38_false-unreach-call.c [2018-10-27 00:09:45,961 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/27fb11559/1ba71b41949a4961bed76f4a87eb55b8/FLAG61dae373d [2018-10-27 00:09:45,983 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/27fb11559/1ba71b41949a4961bed76f4a87eb55b8 [2018-10-27 00:09:45,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:09:45,997 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:09:45,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:09:45,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:09:46,002 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:09:46,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:09:45" (1/1) ... [2018-10-27 00:09:46,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ebb723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:46, skipping insertion in model container [2018-10-27 00:09:46,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:09:45" (1/1) ... [2018-10-27 00:09:46,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:09:46,127 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:09:46,960 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:09:46,965 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:09:47,234 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:09:47,258 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:09:47,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:47 WrapperNode [2018-10-27 00:09:47,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:09:47,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:09:47,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:09:47,260 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:09:47,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:47" (1/1) ... [2018-10-27 00:09:47,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:47" (1/1) ... [2018-10-27 00:09:47,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:09:47,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:09:47,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:09:47,624 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:09:47,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:47" (1/1) ... [2018-10-27 00:09:47,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:47" (1/1) ... [2018-10-27 00:09:47,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:47" (1/1) ... [2018-10-27 00:09:47,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:47" (1/1) ... [2018-10-27 00:09:47,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:47" (1/1) ... [2018-10-27 00:09:47,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:47" (1/1) ... [2018-10-27 00:09:47,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:47" (1/1) ... [2018-10-27 00:09:47,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:09:47,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:09:47,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:09:47,781 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:09:47,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:47" (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 00:09:47,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:09:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:09:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:09:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:09:47,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:09:47,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:09:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:09:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:09:47,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:09:47,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:09:54,305 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:09:54,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:09:54 BoogieIcfgContainer [2018-10-27 00:09:54,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:09:54,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:09:54,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:09:54,313 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:09:54,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:09:45" (1/3) ... [2018-10-27 00:09:54,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b73cc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:09:54, skipping insertion in model container [2018-10-27 00:09:54,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:09:47" (2/3) ... [2018-10-27 00:09:54,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b73cc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:09:54, skipping insertion in model container [2018-10-27 00:09:54,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:09:54" (3/3) ... [2018-10-27 00:09:54,320 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label38_false-unreach-call.c [2018-10-27 00:09:54,330 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:09:54,341 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:09:54,361 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:09:54,413 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:09:54,413 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:09:54,413 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:09:54,414 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:09:54,414 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:09:54,414 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:09:54,414 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:09:54,414 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:09:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 00:09:54,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 00:09:54,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:09:54,456 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:09:54,459 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:09:54,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:54,465 INFO L82 PathProgramCache]: Analyzing trace with hash 104890836, now seen corresponding path program 1 times [2018-10-27 00:09:54,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:09:54,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:54,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:09:54,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:54,521 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:09:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:09:54,870 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 00:09:54,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:09:54,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:09:54,873 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:09:54,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:09:54,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:09:54,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:09:54,900 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 00:09:58,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:09:58,530 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 00:09:58,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:09:58,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-27 00:09:58,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:09:58,556 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 00:09:58,556 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 00:09:58,568 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 00:09:58,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 00:09:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 00:09:58,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 00:09:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-10-27 00:09:58,671 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 18 [2018-10-27 00:09:58,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:09:58,672 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-10-27 00:09:58,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:09:58,672 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-10-27 00:09:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-27 00:09:58,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:09:58,680 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:58,681 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:09:58,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:58,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1793228522, now seen corresponding path program 1 times [2018-10-27 00:09:58,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:09:58,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:58,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:09:58,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:09:58,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:09:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:09:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:09:59,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:09:59,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:09:59,165 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:09:59,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:09:59,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:09:59,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:09:59,168 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-10-27 00:10:06,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:10:06,943 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-10-27 00:10:06,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:10:06,950 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-27 00:10:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:10:06,969 INFO L225 Difference]: With dead ends: 2183 [2018-10-27 00:10:06,970 INFO L226 Difference]: Without dead ends: 1445 [2018-10-27 00:10:06,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:10:06,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-10-27 00:10:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-10-27 00:10:07,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-10-27 00:10:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-10-27 00:10:07,055 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 126 [2018-10-27 00:10:07,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:10:07,058 INFO L481 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-10-27 00:10:07,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:10:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-10-27 00:10:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-27 00:10:07,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:10:07,068 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:07,068 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:10:07,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:10:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1202682773, now seen corresponding path program 1 times [2018-10-27 00:10:07,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:10:07,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:10:07,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:10:07,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:10:07,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:10:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:10:07,374 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:10:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:10:07,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:10:07,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:10:07,761 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:10:07,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:10:07,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:10:07,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:10:07,763 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-10-27 00:10:11,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:10:11,888 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-10-27 00:10:11,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:10:11,894 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-27 00:10:11,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:10:11,913 INFO L225 Difference]: With dead ends: 3902 [2018-10-27 00:10:11,913 INFO L226 Difference]: Without dead ends: 2484 [2018-10-27 00:10:11,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:10:11,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-10-27 00:10:11,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-10-27 00:10:11,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-10-27 00:10:11,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-10-27 00:10:11,999 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 129 [2018-10-27 00:10:11,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:10:11,999 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-10-27 00:10:12,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:10:12,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-10-27 00:10:12,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-27 00:10:12,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:10:12,011 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 00:10:12,011 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:10:12,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:10:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash -317720455, now seen corresponding path program 1 times [2018-10-27 00:10:12,012 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:10:12,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:10:12,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:10:12,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:10:12,013 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:10:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:10:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 22 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 00:10:12,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:10:12,317 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:10:12,318 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 246 with the following transitions: [2018-10-27 00:10:12,320 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [223], [225], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 00:10:12,392 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:10:12,392 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:10:14,967 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:10:14,969 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 00:10:14,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:10:14,980 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:10:17,292 INFO L227 lantSequenceWeakener]: Weakened 237 states. On average, predicates are now at 77.36% of their original sizes. [2018-10-27 00:10:17,292 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:10:17,615 INFO L415 sIntCurrentIteration]: We unified 244 AI predicates to 244 [2018-10-27 00:10:17,615 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:10:17,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:10:17,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 00:10:17,616 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:10:17,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 00:10:17,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 00:10:17,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 00:10:17,618 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 7 states. [2018-10-27 00:10:20,449 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:10:47,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:10:47,774 INFO L93 Difference]: Finished difference Result 5282 states and 7967 transitions. [2018-10-27 00:10:47,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:10:47,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2018-10-27 00:10:47,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:10:47,791 INFO L225 Difference]: With dead ends: 5282 [2018-10-27 00:10:47,791 INFO L226 Difference]: Without dead ends: 2814 [2018-10-27 00:10:47,800 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 245 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:10:47,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2018-10-27 00:10:47,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2018-10-27 00:10:47,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-10-27 00:10:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-10-27 00:10:47,894 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 245 [2018-10-27 00:10:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:10:47,895 INFO L481 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-10-27 00:10:47,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 00:10:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-10-27 00:10:47,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-27 00:10:47,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:10:47,905 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 00:10:47,906 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:10:47,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:10:47,906 INFO L82 PathProgramCache]: Analyzing trace with hash 310121175, now seen corresponding path program 1 times [2018-10-27 00:10:47,906 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:10:47,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:10:47,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:10:47,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:10:47,908 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:10:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:10:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 128 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-27 00:10:48,505 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:10:48,505 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:10:48,505 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-27 00:10:48,506 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [223], [225], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 00:10:48,512 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:10:48,513 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:10:49,605 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:10:56,794 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:10:56,795 INFO L272 AbstractInterpreter]: Visited 125 different actions 366 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 00:10:56,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:10:56,806 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:11:00,979 INFO L227 lantSequenceWeakener]: Weakened 118 states. On average, predicates are now at 77.79% of their original sizes. [2018-10-27 00:11:00,979 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:12:08,109 INFO L415 sIntCurrentIteration]: We unified 336 AI predicates to 336 [2018-10-27 00:12:08,110 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:12:08,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:12:08,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-27 00:12:08,111 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:12:08,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-27 00:12:08,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-27 00:12:08,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2018-10-27 00:12:08,113 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 22 states. Received shutdown request... [2018-10-27 00:13:42,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 00:13:42,743 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:13:42,748 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:13:42,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:13:42 BoogieIcfgContainer [2018-10-27 00:13:42,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:13:42,750 INFO L168 Benchmark]: Toolchain (without parser) took 236753.89 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-27 00:13:42,751 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:13:42,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1261.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:13:42,753 INFO L168 Benchmark]: Boogie Procedure Inliner took 363.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:13:42,754 INFO L168 Benchmark]: Boogie Preprocessor took 156.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:13:42,755 INFO L168 Benchmark]: RCFGBuilder took 6526.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 245.0 MB). Peak memory consumption was 245.0 MB. Max. memory is 7.1 GB. [2018-10-27 00:13:42,756 INFO L168 Benchmark]: TraceAbstraction took 228440.93 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -672.8 MB). Peak memory consumption was 939.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:13:42,771 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1261.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 363.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -854.1 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6526.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 245.0 MB). Peak memory consumption was 245.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228440.93 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -672.8 MB). Peak memory consumption was 939.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 40]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 40). Cancelled while BasicCegarLoop was constructing difference of abstraction (2812states) and FLOYD_HOARE automaton (currently 15 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (502 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 228.3s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 140.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 780 SDtfs, 6165 SDslu, 464 SDs, 0 SdLazy, 7090 SolverSat, 2262 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 614 GetRequests, 486 SyntacticMatches, 79 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 70.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2812occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9957864817591204 AbsIntWeakeningRatio, 0.1 AbsIntAvgWeakeningVarsNumRemoved, 541.2775862068966 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 855 NumberOfCodeBlocks, 855 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 850 ConstructedInterpolants, 0 QuantifiedInterpolants, 622133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 267/483 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown