java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:23:26,524 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:23:26,526 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:23:26,541 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:23:26,541 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:23:26,542 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:23:26,544 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:23:26,545 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:23:26,547 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:23:26,548 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:23:26,549 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:23:26,549 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:23:26,550 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:23:26,551 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:23:26,552 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:23:26,553 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:23:26,554 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:23:26,556 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:23:26,558 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:23:26,560 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:23:26,561 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:23:26,562 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:23:26,564 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:23:26,565 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:23:26,565 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:23:26,566 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:23:26,567 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:23:26,567 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:23:26,568 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:23:26,569 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:23:26,570 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:23:26,570 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:23:26,571 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:23:26,571 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:23:26,572 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:23:26,573 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:23:26,573 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:23:26,601 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:23:26,602 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:23:26,603 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:23:26,603 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:23:26,603 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:23:26,603 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:23:26,603 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:23:26,604 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:23:26,604 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:23:26,604 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:23:26,604 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:23:26,604 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:23:26,604 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:23:26,605 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:23:26,605 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:23:26,605 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:23:26,607 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:23:26,607 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:23:26,607 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:23:26,607 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:23:26,607 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:23:26,608 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:23:26,608 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:23:26,608 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:23:26,609 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:23:26,609 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:23:26,609 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:23:26,609 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:23:26,609 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:23:26,610 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:23:26,610 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:23:26,610 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:23:26,611 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:23:26,611 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:23:26,611 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:23:26,678 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:23:26,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:23:26,696 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:23:26,697 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:23:26,698 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:23:26,699 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label56_true-unreach-call.c [2018-11-07 20:23:26,767 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd346e3a/97c5e38457d4481e814c074e5c051333/FLAG8736575ef [2018-11-07 20:23:27,625 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:23:27,626 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label56_true-unreach-call.c [2018-11-07 20:23:27,654 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd346e3a/97c5e38457d4481e814c074e5c051333/FLAG8736575ef [2018-11-07 20:23:27,671 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd346e3a/97c5e38457d4481e814c074e5c051333 [2018-11-07 20:23:27,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:23:27,690 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:23:27,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:23:27,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:23:27,697 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:23:27,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:23:27" (1/1) ... [2018-11-07 20:23:27,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d6e334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:27, skipping insertion in model container [2018-11-07 20:23:27,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:23:27" (1/1) ... [2018-11-07 20:23:27,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:23:27,866 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:23:29,172 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:23:29,177 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:23:29,842 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:23:29,878 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:23:29,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:29 WrapperNode [2018-11-07 20:23:29,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:23:29,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:23:29,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:23:29,881 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:23:29,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:29" (1/1) ... [2018-11-07 20:23:30,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:29" (1/1) ... [2018-11-07 20:23:30,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:23:30,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:23:30,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:23:30,221 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:23:30,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:29" (1/1) ... [2018-11-07 20:23:30,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:29" (1/1) ... [2018-11-07 20:23:30,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:29" (1/1) ... [2018-11-07 20:23:30,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:29" (1/1) ... [2018-11-07 20:23:30,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:29" (1/1) ... [2018-11-07 20:23:30,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:29" (1/1) ... [2018-11-07 20:23:30,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:29" (1/1) ... [2018-11-07 20:23:30,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:23:30,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:23:30,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:23:30,496 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:23:30,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:23:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:23:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:23:30,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:23:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 20:23:30,566 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 20:23:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 20:23:30,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 20:23:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:23:30,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:23:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:23:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:23:30,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:23:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:23:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:23:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:23:41,386 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:23:41,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:23:41 BoogieIcfgContainer [2018-11-07 20:23:41,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:23:41,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:23:41,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:23:41,391 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:23:41,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:23:27" (1/3) ... [2018-11-07 20:23:41,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb5c0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:23:41, skipping insertion in model container [2018-11-07 20:23:41,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:23:29" (2/3) ... [2018-11-07 20:23:41,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb5c0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:23:41, skipping insertion in model container [2018-11-07 20:23:41,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:23:41" (3/3) ... [2018-11-07 20:23:41,395 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label56_true-unreach-call.c [2018-11-07 20:23:41,405 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:23:41,417 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:23:41,435 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:23:41,479 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:23:41,480 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:23:41,480 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:23:41,480 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:23:41,480 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:23:41,480 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:23:41,480 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:23:41,481 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:23:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 20:23:41,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-07 20:23:41,532 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:23:41,534 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:23:41,539 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:23:41,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:23:41,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1384793435, now seen corresponding path program 1 times [2018-11-07 20:23:41,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:23:41,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:23:41,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:23:41,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:23:41,601 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:23:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:23:42,062 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:23:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:23:42,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:23:42,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:23:42,240 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:23:42,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:23:42,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:23:42,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:23:42,294 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 20:23:50,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:23:50,000 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 20:23:50,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:23:50,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2018-11-07 20:23:50,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:23:50,054 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 20:23:50,055 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 20:23:50,073 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:23:50,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 20:23:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 20:23:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 20:23:50,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-11-07 20:23:50,252 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 63 [2018-11-07 20:23:50,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:23:50,253 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-11-07 20:23:50,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:23:50,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-11-07 20:23:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 20:23:50,262 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:23:50,262 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:23:50,262 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:23:50,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:23:50,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1410076404, now seen corresponding path program 1 times [2018-11-07 20:23:50,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:23:50,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:23:50,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:23:50,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:23:50,265 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:23:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:23:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:23:50,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:23:50,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:23:50,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:23:50,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:23:50,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:23:50,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:23:50,650 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-11-07 20:24:00,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:24:00,168 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-11-07 20:24:00,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:24:00,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-11-07 20:24:00,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:24:00,194 INFO L225 Difference]: With dead ends: 4818 [2018-11-07 20:24:00,195 INFO L226 Difference]: Without dead ends: 3220 [2018-11-07 20:24:00,201 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:24:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-11-07 20:24:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-11-07 20:24:00,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-11-07 20:24:00,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-11-07 20:24:00,317 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 137 [2018-11-07 20:24:00,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:24:00,318 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-11-07 20:24:00,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:24:00,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-11-07 20:24:00,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 20:24:00,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:24:00,322 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:24:00,322 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:24:00,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:24:00,323 INFO L82 PathProgramCache]: Analyzing trace with hash -284658707, now seen corresponding path program 1 times [2018-11-07 20:24:00,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:24:00,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:24:00,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:24:00,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:24:00,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:24:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:24:00,583 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:24:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:24:00,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:24:00,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:24:00,955 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:24:00,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:24:00,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:24:00,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:24:00,957 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-11-07 20:24:13,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:24:13,608 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-11-07 20:24:13,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:24:13,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-11-07 20:24:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:24:13,657 INFO L225 Difference]: With dead ends: 11148 [2018-11-07 20:24:13,658 INFO L226 Difference]: Without dead ends: 7968 [2018-11-07 20:24:13,674 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:24:13,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-11-07 20:24:13,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-11-07 20:24:13,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-11-07 20:24:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-11-07 20:24:13,898 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 142 [2018-11-07 20:24:13,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:24:13,899 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-11-07 20:24:13,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:24:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-11-07 20:24:13,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-11-07 20:24:13,905 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:24:13,905 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:24:13,905 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:24:13,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:24:13,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1120664195, now seen corresponding path program 1 times [2018-11-07 20:24:13,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:24:13,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:24:13,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:24:13,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:24:13,908 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:24:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:24:14,174 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:24:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:24:14,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:24:14,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:24:14,337 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:24:14,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:24:14,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:24:14,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:24:14,338 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-11-07 20:24:23,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:24:23,309 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-11-07 20:24:23,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:24:23,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-11-07 20:24:23,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:24:23,385 INFO L225 Difference]: With dead ends: 22224 [2018-11-07 20:24:23,385 INFO L226 Difference]: Without dead ends: 14306 [2018-11-07 20:24:23,428 INFO L604 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 [2018-11-07 20:24:23,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-11-07 20:24:23,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-11-07 20:24:23,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-11-07 20:24:23,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-11-07 20:24:23,782 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 150 [2018-11-07 20:24:23,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:24:23,783 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-11-07 20:24:23,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:24:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-11-07 20:24:23,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-11-07 20:24:23,788 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:24:23,789 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:24:23,789 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:24:23,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:24:23,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1804914960, now seen corresponding path program 1 times [2018-11-07 20:24:23,790 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:24:23,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:24:23,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:24:23,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:24:23,791 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:24:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:24:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:24:24,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:24:24,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:24:24,306 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:24:24,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:24:24,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:24:24,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:24:24,307 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-11-07 20:24:39,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:24:39,204 INFO L93 Difference]: Finished difference Result 55644 states and 94207 transitions. [2018-11-07 20:24:39,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 20:24:39,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-11-07 20:24:39,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:24:39,480 INFO L225 Difference]: With dead ends: 55644 [2018-11-07 20:24:39,481 INFO L226 Difference]: Without dead ends: 41431 [2018-11-07 20:24:39,620 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:24:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41431 states. [2018-11-07 20:24:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41431 to 41210. [2018-11-07 20:24:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41210 states. [2018-11-07 20:24:41,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41210 states to 41210 states and 61798 transitions. [2018-11-07 20:24:41,172 INFO L78 Accepts]: Start accepts. Automaton has 41210 states and 61798 transitions. Word has length 167 [2018-11-07 20:24:41,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:24:41,173 INFO L480 AbstractCegarLoop]: Abstraction has 41210 states and 61798 transitions. [2018-11-07 20:24:41,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:24:41,173 INFO L276 IsEmpty]: Start isEmpty. Operand 41210 states and 61798 transitions. [2018-11-07 20:24:41,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-11-07 20:24:41,183 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:24:41,183 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:24:41,184 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:24:41,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:24:41,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1097653015, now seen corresponding path program 1 times [2018-11-07 20:24:41,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:24:41,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:24:41,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:24:41,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:24:41,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:24:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:24:41,482 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:24:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:24:41,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:24:41,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:24:41,897 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:24:41,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:24:41,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:24:41,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:24:41,899 INFO L87 Difference]: Start difference. First operand 41210 states and 61798 transitions. Second operand 6 states. [2018-11-07 20:24:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:24:52,502 INFO L93 Difference]: Finished difference Result 101423 states and 161713 transitions. [2018-11-07 20:24:52,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:24:52,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 188 [2018-11-07 20:24:52,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:24:52,763 INFO L225 Difference]: With dead ends: 101423 [2018-11-07 20:24:52,764 INFO L226 Difference]: Without dead ends: 60219 [2018-11-07 20:24:52,956 INFO L604 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 [2018-11-07 20:24:53,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60219 states. [2018-11-07 20:24:54,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60219 to 59913. [2018-11-07 20:24:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59913 states. [2018-11-07 20:24:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59913 states to 59913 states and 84294 transitions. [2018-11-07 20:24:54,402 INFO L78 Accepts]: Start accepts. Automaton has 59913 states and 84294 transitions. Word has length 188 [2018-11-07 20:24:54,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:24:54,403 INFO L480 AbstractCegarLoop]: Abstraction has 59913 states and 84294 transitions. [2018-11-07 20:24:54,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:24:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 59913 states and 84294 transitions. [2018-11-07 20:24:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-11-07 20:24:54,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:24:54,425 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:24:54,425 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:24:54,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:24:54,426 INFO L82 PathProgramCache]: Analyzing trace with hash 960313160, now seen corresponding path program 1 times [2018-11-07 20:24:54,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:24:54,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:24:54,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:24:54,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:24:54,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:24:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:24:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 112 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:24:54,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:24:54,804 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:24:54,805 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-11-07 20:24:54,809 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2271], [2273], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2396], [2397], [2400], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:24:54,899 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:24:54,899 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:24:55,392 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:24:55,394 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 20:24:55,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:24:55,435 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:24:56,087 INFO L227 lantSequenceWeakener]: Weakened 213 states. On average, predicates are now at 75.8% of their original sizes. [2018-11-07 20:24:56,087 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:24:56,211 INFO L415 sIntCurrentIteration]: We unified 221 AI predicates to 221 [2018-11-07 20:24:56,211 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:24:56,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:24:56,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 20:24:56,213 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:24:56,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 20:24:56,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 20:24:56,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:24:56,214 INFO L87 Difference]: Start difference. First operand 59913 states and 84294 transitions. Second operand 8 states. [2018-11-07 20:25:04,456 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:26:08,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:26:08,621 INFO L93 Difference]: Finished difference Result 120590 states and 169479 transitions. [2018-11-07 20:26:08,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:26:08,622 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2018-11-07 20:26:08,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:26:08,836 INFO L225 Difference]: With dead ends: 120590 [2018-11-07 20:26:08,836 INFO L226 Difference]: Without dead ends: 60683 [2018-11-07 20:26:08,981 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 223 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:26:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60683 states. [2018-11-07 20:26:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60683 to 60681. [2018-11-07 20:26:09,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60681 states. [2018-11-07 20:26:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60681 states to 60681 states and 85073 transitions. [2018-11-07 20:26:10,152 INFO L78 Accepts]: Start accepts. Automaton has 60681 states and 85073 transitions. Word has length 222 [2018-11-07 20:26:10,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:26:10,152 INFO L480 AbstractCegarLoop]: Abstraction has 60681 states and 85073 transitions. [2018-11-07 20:26:10,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 20:26:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 60681 states and 85073 transitions. [2018-11-07 20:26:10,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-11-07 20:26:10,167 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:26:10,168 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 20:26:10,168 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:26:10,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:26:10,169 INFO L82 PathProgramCache]: Analyzing trace with hash -610614196, now seen corresponding path program 1 times [2018-11-07 20:26:10,169 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:26:10,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:26:10,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:26:10,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:26:10,170 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:26:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:26:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:26:10,451 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:26:10,451 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:26:10,451 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 265 with the following transitions: [2018-11-07 20:26:10,452 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2271], [2273], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2580], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 20:26:10,458 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:26:10,458 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:26:10,768 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:26:10,768 INFO L272 AbstractInterpreter]: Visited 133 different actions 259 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:26:10,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:26:10,798 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:26:11,187 INFO L227 lantSequenceWeakener]: Weakened 261 states. On average, predicates are now at 75.69% of their original sizes. [2018-11-07 20:26:11,188 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:26:11,475 INFO L415 sIntCurrentIteration]: We unified 263 AI predicates to 263 [2018-11-07 20:26:11,476 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:26:11,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:26:11,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 20:26:11,476 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:26:11,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:26:11,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:26:11,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:26:11,478 INFO L87 Difference]: Start difference. First operand 60681 states and 85073 transitions. Second operand 11 states. [2018-11-07 20:26:16,014 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 20:26:51,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 20:26:51,128 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:26:51,133 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:26:51,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:26:51 BoogieIcfgContainer [2018-11-07 20:26:51,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:26:51,135 INFO L168 Benchmark]: Toolchain (without parser) took 203445.49 ms. Allocated memory was 1.5 GB in the beginning and 6.0 GB in the end (delta: 4.5 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 20:26:51,136 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. [2018-11-07 20:26:51,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2187.61 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 20:26:51,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 340.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 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 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 20:26:51,139 INFO L168 Benchmark]: Boogie Preprocessor took 274.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:26:51,145 INFO L168 Benchmark]: RCFGBuilder took 10891.73 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 145.8 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -152.5 MB). Peak memory consumption was 664.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:26:51,146 INFO L168 Benchmark]: TraceAbstraction took 189746.07 ms. Allocated memory was 2.5 GB in the beginning and 6.0 GB in the end (delta: 3.5 GB). Free memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: -714.2 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 20:26:51,159 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 2187.61 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 340.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 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 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 274.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10891.73 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 145.8 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -152.5 MB). Peak memory consumption was 664.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 189746.07 ms. Allocated memory was 2.5 GB in the beginning and 6.0 GB in the end (delta: 3.5 GB). Free memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: -714.2 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 180]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 180). Cancelled while BasicCegarLoop was constructing difference of abstraction (60681states) and FLOYD_HOARE automaton (currently 14 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (57546 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 189.6s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 177.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2354 SDtfs, 23011 SDslu, 1935 SDs, 0 SdLazy, 47170 SolverSat, 8279 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 550 GetRequests, 482 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60681occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.997553966724376 AbsIntWeakeningRatio, 0.1115702479338843 AbsIntAvgWeakeningVarsNumRemoved, 22.58677685950413 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 694 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1333 NumberOfCodeBlocks, 1333 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1325 ConstructedInterpolants, 0 QuantifiedInterpolants, 903120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 583/659 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown