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/Problem13_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:30:59,359 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:30:59,362 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:30:59,374 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:30:59,375 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:30:59,376 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:30:59,377 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:30:59,379 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:30:59,381 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:30:59,381 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:30:59,382 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:30:59,383 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:30:59,384 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:30:59,384 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:30:59,386 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:30:59,386 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:30:59,387 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:30:59,389 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:30:59,391 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:30:59,393 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:30:59,394 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:30:59,395 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:30:59,398 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:30:59,398 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:30:59,398 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:30:59,400 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:30:59,401 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:30:59,401 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:30:59,402 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:30:59,404 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:30:59,404 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:30:59,405 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:30:59,405 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:30:59,405 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:30:59,406 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:30:59,407 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:30:59,407 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 [2018-10-24 21:30:59,430 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:30:59,430 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:30:59,433 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:30:59,433 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:30:59,434 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:30:59,434 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:30:59,434 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:30:59,434 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:30:59,434 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:30:59,434 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:30:59,435 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:30:59,435 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:30:59,436 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:30:59,437 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:30:59,437 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:30:59,437 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:30:59,437 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:30:59,438 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:30:59,438 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:30:59,438 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:30:59,438 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:30:59,438 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:30:59,439 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:30:59,440 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:30:59,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:30:59,440 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:30:59,442 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:30:59,442 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:30:59,442 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:30:59,442 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:30:59,442 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:30:59,443 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:30:59,443 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:30:59,443 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:30:59,495 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:30:59,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:30:59,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:30:59,517 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:30:59,517 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:30:59,518 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c [2018-10-24 21:30:59,588 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc90cd12d/b8d6d7033b9e459ebe3d3dda101d9b92/FLAG23de4a09b [2018-10-24 21:31:00,357 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:31:00,358 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label22_true-unreach-call.c [2018-10-24 21:31:00,394 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc90cd12d/b8d6d7033b9e459ebe3d3dda101d9b92/FLAG23de4a09b [2018-10-24 21:31:00,413 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cc90cd12d/b8d6d7033b9e459ebe3d3dda101d9b92 [2018-10-24 21:31:00,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:31:00,431 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:31:00,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:31:00,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:31:00,439 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:31:00,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:31:00" (1/1) ... [2018-10-24 21:31:00,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44de30fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:00, skipping insertion in model container [2018-10-24 21:31:00,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:31:00" (1/1) ... [2018-10-24 21:31:00,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:31:00,653 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:31:02,121 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:31:02,127 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:31:02,929 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:31:02,970 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:31:02,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:02 WrapperNode [2018-10-24 21:31:02,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:31:02,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:31:02,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:31:02,972 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:31:02,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:02" (1/1) ... [2018-10-24 21:31:03,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:02" (1/1) ... [2018-10-24 21:31:03,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:31:03,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:31:03,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:31:03,589 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:31:03,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:02" (1/1) ... [2018-10-24 21:31:03,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:02" (1/1) ... [2018-10-24 21:31:03,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:02" (1/1) ... [2018-10-24 21:31:03,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:02" (1/1) ... [2018-10-24 21:31:03,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:02" (1/1) ... [2018-10-24 21:31:03,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:02" (1/1) ... [2018-10-24 21:31:03,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:02" (1/1) ... [2018-10-24 21:31:03,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:31:03,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:31:03,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:31:03,907 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:31:03,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:02" (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 [2018-10-24 21:31:03,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:31:03,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:31:03,992 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:31:03,992 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:31:03,992 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:31:03,992 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:31:03,992 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:31:03,993 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:31:03,993 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:31:03,993 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:31:03,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:31:03,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:31:03,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:31:03,995 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:31:15,713 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:31:15,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:31:15 BoogieIcfgContainer [2018-10-24 21:31:15,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:31:15,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:31:15,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:31:15,719 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:31:15,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:31:00" (1/3) ... [2018-10-24 21:31:15,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cb7d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:31:15, skipping insertion in model container [2018-10-24 21:31:15,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:31:02" (2/3) ... [2018-10-24 21:31:15,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43cb7d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:31:15, skipping insertion in model container [2018-10-24 21:31:15,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:31:15" (3/3) ... [2018-10-24 21:31:15,722 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label22_true-unreach-call.c [2018-10-24 21:31:15,732 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:31:15,741 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:31:15,759 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:31:15,816 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:31:15,816 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:31:15,816 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:31:15,816 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:31:15,816 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:31:15,817 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:31:15,817 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:31:15,817 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:31:15,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 21:31:15,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-24 21:31:15,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:15,868 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] [2018-10-24 21:31:15,871 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:15,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:15,876 INFO L82 PathProgramCache]: Analyzing trace with hash -380938253, now seen corresponding path program 1 times [2018-10-24 21:31:15,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:15,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:15,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:15,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:15,936 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:16,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:16,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:31:16,394 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:16,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:31:16,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:31:16,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:31:16,420 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 21:31:35,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:35,213 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-10-24 21:31:35,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:31:35,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-24 21:31:35,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:35,282 INFO L225 Difference]: With dead ends: 4105 [2018-10-24 21:31:35,283 INFO L226 Difference]: Without dead ends: 2979 [2018-10-24 21:31:35,299 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 [2018-10-24 21:31:35,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-10-24 21:31:35,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-10-24 21:31:35,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-10-24 21:31:35,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-10-24 21:31:35,525 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 39 [2018-10-24 21:31:35,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:35,526 INFO L481 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-10-24 21:31:35,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:31:35,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-10-24 21:31:35,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 21:31:35,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:35,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:31:35,534 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:35,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:35,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1766897295, now seen corresponding path program 1 times [2018-10-24 21:31:35,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:35,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:35,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:35,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:35,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:36,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:36,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:31:36,071 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:36,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:31:36,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:31:36,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:31:36,074 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-10-24 21:31:53,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:31:53,116 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-10-24 21:31:53,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:31:53,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-10-24 21:31:53,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:31:53,168 INFO L225 Difference]: With dead ends: 10635 [2018-10-24 21:31:53,169 INFO L226 Difference]: Without dead ends: 7792 [2018-10-24 21:31:53,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:31:53,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-10-24 21:31:53,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-10-24 21:31:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-10-24 21:31:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-10-24 21:31:53,418 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 110 [2018-10-24 21:31:53,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:31:53,420 INFO L481 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-10-24 21:31:53,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:31:53,420 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-10-24 21:31:53,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-24 21:31:53,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:31:53,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:31:53,430 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:31:53,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:31:53,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1433958942, now seen corresponding path program 1 times [2018-10-24 21:31:53,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:31:53,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:53,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:31:53,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:31:53,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:31:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:31:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:31:53,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:31:53,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:31:53,816 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:31:53,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:31:53,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:31:53,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:31:53,817 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-10-24 21:32:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:32:09,980 INFO L93 Difference]: Finished difference Result 21334 states and 35505 transitions. [2018-10-24 21:32:09,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:32:09,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-10-24 21:32:09,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:32:10,049 INFO L225 Difference]: With dead ends: 21334 [2018-10-24 21:32:10,051 INFO L226 Difference]: Without dead ends: 13611 [2018-10-24 21:32:10,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:32:10,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13611 states. [2018-10-24 21:32:10,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13611 to 13533. [2018-10-24 21:32:10,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13533 states. [2018-10-24 21:32:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13533 states to 13533 states and 20794 transitions. [2018-10-24 21:32:10,437 INFO L78 Accepts]: Start accepts. Automaton has 13533 states and 20794 transitions. Word has length 113 [2018-10-24 21:32:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:32:10,437 INFO L481 AbstractCegarLoop]: Abstraction has 13533 states and 20794 transitions. [2018-10-24 21:32:10,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:32:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 13533 states and 20794 transitions. [2018-10-24 21:32:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 21:32:10,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:32:10,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:32:10,444 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:32:10,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:10,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1170956786, now seen corresponding path program 1 times [2018-10-24 21:32:10,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:32:10,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:10,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:32:10,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:10,450 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:32:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:32:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:32:10,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:32:10,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:32:10,802 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:32:10,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:32:10,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:32:10,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:32:10,805 INFO L87 Difference]: Start difference. First operand 13533 states and 20794 transitions. Second operand 5 states. [2018-10-24 21:32:25,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:32:25,595 INFO L93 Difference]: Finished difference Result 40056 states and 65129 transitions. [2018-10-24 21:32:25,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:32:25,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-10-24 21:32:25,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:32:25,715 INFO L225 Difference]: With dead ends: 40056 [2018-10-24 21:32:25,716 INFO L226 Difference]: Without dead ends: 26529 [2018-10-24 21:32:25,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:32:25,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26529 states. [2018-10-24 21:32:26,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26529 to 26229. [2018-10-24 21:32:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26229 states. [2018-10-24 21:32:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26229 states to 26229 states and 38611 transitions. [2018-10-24 21:32:26,410 INFO L78 Accepts]: Start accepts. Automaton has 26229 states and 38611 transitions. Word has length 123 [2018-10-24 21:32:26,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:32:26,411 INFO L481 AbstractCegarLoop]: Abstraction has 26229 states and 38611 transitions. [2018-10-24 21:32:26,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:32:26,411 INFO L276 IsEmpty]: Start isEmpty. Operand 26229 states and 38611 transitions. [2018-10-24 21:32:26,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 21:32:26,416 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:32:26,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:32:26,416 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:32:26,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:26,417 INFO L82 PathProgramCache]: Analyzing trace with hash 531830176, now seen corresponding path program 1 times [2018-10-24 21:32:26,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:32:26,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:26,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:32:26,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:32:26,418 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:32:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:32:26,725 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:32:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:32:27,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:32:27,306 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:32:27,308 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-10-24 21:32:27,311 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2839], [2841], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 21:32:27,414 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:32:27,414 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:32:58,559 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:32:58,561 INFO L272 AbstractInterpreter]: Visited 108 different actions 720 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 21:32:58,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:32:58,608 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:33:01,135 INFO L232 lantSequenceWeakener]: Weakened 30 states. On average, predicates are now at 75.51% of their original sizes. [2018-10-24 21:33:01,135 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:33:10,224 INFO L413 sIntCurrentIteration]: We have 139 unified AI predicates [2018-10-24 21:33:10,224 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:33:10,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:33:10,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2018-10-24 21:33:10,226 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:33:10,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 21:33:10,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 21:33:10,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-10-24 21:33:10,227 INFO L87 Difference]: Start difference. First operand 26229 states and 38611 transitions. Second operand 14 states. [2018-10-24 21:33:27,225 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:34:52,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 21:34:52,265 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:34:52,271 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:34:52,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:34:52 BoogieIcfgContainer [2018-10-24 21:34:52,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:34:52,272 INFO L168 Benchmark]: Toolchain (without parser) took 231842.62 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:34:52,273 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 21:34:52,274 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2538.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:52,275 INFO L168 Benchmark]: Boogie Procedure Inliner took 617.11 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 824.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:52,276 INFO L168 Benchmark]: Boogie Preprocessor took 317.54 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:52,277 INFO L168 Benchmark]: RCFGBuilder took 11807.44 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 177.2 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 18.1 MB). Peak memory consumption was 657.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:52,277 INFO L168 Benchmark]: TraceAbstraction took 216556.09 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -743.4 MB). Peak memory consumption was 971.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:34:52,283 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2538.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 617.11 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 824.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 317.54 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11807.44 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 177.2 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 18.1 MB). Peak memory consumption was 657.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216556.09 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -743.4 MB). Peak memory consumption was 971.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 108). Cancelled while BasicCegarLoop was constructing difference of abstraction (26229states) and FLOYD_HOARE automaton (currently 15 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (2623 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 216.4s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 169.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1794 SDtfs, 15293 SDslu, 2273 SDs, 0 SdLazy, 24324 SolverSat, 7405 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 107.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 179 GetRequests, 131 SyntacticMatches, 9 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26229occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 31.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9935915882678471 AbsIntWeakeningRatio, 0.1510791366906475 AbsIntAvgWeakeningVarsNumRemoved, 88.5179856115108 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 571 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 525 NumberOfCodeBlocks, 525 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 520 ConstructedInterpolants, 0 QuantifiedInterpolants, 288388 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 111/128 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown