java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:12:06,521 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:12:06,524 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:12:06,543 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:12:06,543 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:12:06,544 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:12:06,547 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:12:06,549 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:12:06,551 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:12:06,559 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:12:06,560 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:12:06,560 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:12:06,562 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:12:06,565 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:12:06,566 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:12:06,567 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:12:06,568 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:12:06,573 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:12:06,576 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:12:06,578 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:12:06,580 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:12:06,581 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:12:06,586 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:12:06,586 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:12:06,586 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:12:06,587 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:12:06,588 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:12:06,590 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:12:06,591 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:12:06,592 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:12:06,592 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:12:06,593 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 15:12:06,593 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 15:12:06,593 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 15:12:06,596 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 15:12:06,597 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 15:12:06,598 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 15:12:06,622 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:12:06,624 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:12:06,625 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:12:06,628 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:12:06,628 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:12:06,628 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:12:06,628 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:12:06,628 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:12:06,629 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:12:06,629 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:12:06,629 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:12:06,629 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:12:06,630 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:12:06,630 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:12:06,630 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:12:06,630 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:12:06,631 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:12:06,631 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:12:06,631 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:12:06,631 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:12:06,631 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:12:06,632 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:12:06,632 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:12:06,632 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:12:06,632 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:12:06,632 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:12:06,632 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:12:06,633 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:12:06,633 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:12:06,633 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:12:06,633 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:12:06,633 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:12:06,634 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:12:06,634 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:12:06,679 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:12:06,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:12:06,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:12:06,697 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:12:06,697 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:12:06,698 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label47_true-unreach-call.c [2018-10-27 15:12:06,764 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8ce07e6bb/a3adc8c7d1f64fb28ae831ef73e6b98c/FLAG9df2325b0 [2018-10-27 15:12:07,548 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:12:07,550 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label47_true-unreach-call.c [2018-10-27 15:12:07,576 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8ce07e6bb/a3adc8c7d1f64fb28ae831ef73e6b98c/FLAG9df2325b0 [2018-10-27 15:12:07,595 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8ce07e6bb/a3adc8c7d1f64fb28ae831ef73e6b98c [2018-10-27 15:12:07,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:12:07,608 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:12:07,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:12:07,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:12:07,614 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:12:07,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:12:07" (1/1) ... [2018-10-27 15:12:07,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379aca2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:07, skipping insertion in model container [2018-10-27 15:12:07,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:12:07" (1/1) ... [2018-10-27 15:12:07,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:12:07,759 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:12:08,874 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:12:08,879 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:12:09,412 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:12:09,440 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:12:09,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:09 WrapperNode [2018-10-27 15:12:09,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:12:09,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:12:09,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:12:09,442 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:12:09,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:09" (1/1) ... [2018-10-27 15:12:09,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:09" (1/1) ... [2018-10-27 15:12:09,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:12:09,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:12:09,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:12:09,862 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:12:09,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:09" (1/1) ... [2018-10-27 15:12:09,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:09" (1/1) ... [2018-10-27 15:12:09,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:09" (1/1) ... [2018-10-27 15:12:09,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:09" (1/1) ... [2018-10-27 15:12:09,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:09" (1/1) ... [2018-10-27 15:12:10,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:09" (1/1) ... [2018-10-27 15:12:10,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:09" (1/1) ... [2018-10-27 15:12:10,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:12:10,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:12:10,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:12:10,086 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:12:10,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:12:10,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:12:10,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:12:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 15:12:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 15:12:10,160 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 15:12:10,160 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 15:12:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 15:12:10,161 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 15:12:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:12:10,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:12:10,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:12:10,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:12:18,434 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:12:18,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:12:18 BoogieIcfgContainer [2018-10-27 15:12:18,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:12:18,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:12:18,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:12:18,441 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:12:18,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:12:07" (1/3) ... [2018-10-27 15:12:18,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761af8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:12:18, skipping insertion in model container [2018-10-27 15:12:18,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:12:09" (2/3) ... [2018-10-27 15:12:18,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761af8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:12:18, skipping insertion in model container [2018-10-27 15:12:18,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:12:18" (3/3) ... [2018-10-27 15:12:18,445 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label47_true-unreach-call.c [2018-10-27 15:12:18,455 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:12:18,466 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:12:18,485 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:12:18,531 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:12:18,531 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:12:18,531 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:12:18,532 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:12:18,532 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:12:18,532 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:12:18,532 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:12:18,532 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:12:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 15:12:18,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-27 15:12:18,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:12:18,583 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, 1, 1, 1] [2018-10-27 15:12:18,587 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:12:18,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:12:18,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1668959596, now seen corresponding path program 1 times [2018-10-27 15:12:18,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:12:18,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:12:18,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:12:18,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:12:18,660 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:12:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:12:19,160 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:12:19,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:12:19,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:12:19,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 15:12:19,316 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:12:19,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:12:19,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:12:19,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:12:19,347 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 15:12:26,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:12:26,377 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 15:12:26,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:12:26,382 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-10-27 15:12:26,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:12:26,415 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 15:12:26,416 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 15:12:26,429 INFO L605 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 [2018-10-27 15:12:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 15:12:26,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 15:12:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 15:12:26,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-27 15:12:26,608 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 66 [2018-10-27 15:12:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:12:26,608 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-27 15:12:26,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:12:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-27 15:12:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-27 15:12:26,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:12:26,619 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, 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] [2018-10-27 15:12:26,619 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:12:26,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:12:26,620 INFO L82 PathProgramCache]: Analyzing trace with hash -842536169, now seen corresponding path program 1 times [2018-10-27 15:12:26,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:12:26,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:12:26,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:12:26,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:12:26,621 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:12:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:12:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:12:26,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:12:26,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:12:26,854 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:12:26,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:12:26,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:12:26,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:12:26,857 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-27 15:12:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:12:37,215 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-10-27 15:12:37,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:12:37,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-27 15:12:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:12:37,237 INFO L225 Difference]: With dead ends: 4422 [2018-10-27 15:12:37,237 INFO L226 Difference]: Without dead ends: 2954 [2018-10-27 15:12:37,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:12:37,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-27 15:12:37,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-10-27 15:12:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-27 15:12:37,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-10-27 15:12:37,335 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 141 [2018-10-27 15:12:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:12:37,336 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-10-27 15:12:37,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:12:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-10-27 15:12:37,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-27 15:12:37,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:12:37,346 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, 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] [2018-10-27 15:12:37,347 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:12:37,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:12:37,347 INFO L82 PathProgramCache]: Analyzing trace with hash -2017722561, now seen corresponding path program 1 times [2018-10-27 15:12:37,347 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:12:37,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:12:37,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:12:37,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:12:37,349 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:12:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:12:37,555 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:12:37,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:12:37,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:12:37,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:12:37,557 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:12:37,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:12:37,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:12:37,558 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-10-27 15:12:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:12:49,404 INFO L93 Difference]: Finished difference Result 11886 states and 21681 transitions. [2018-10-27 15:12:49,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 15:12:49,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-10-27 15:12:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:12:49,470 INFO L225 Difference]: With dead ends: 11886 [2018-10-27 15:12:49,470 INFO L226 Difference]: Without dead ends: 8964 [2018-10-27 15:12:49,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 15:12:49,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8964 states. [2018-10-27 15:12:49,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8964 to 8894. [2018-10-27 15:12:49,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8894 states. [2018-10-27 15:12:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8894 states to 8894 states and 13540 transitions. [2018-10-27 15:12:49,887 INFO L78 Accepts]: Start accepts. Automaton has 8894 states and 13540 transitions. Word has length 153 [2018-10-27 15:12:49,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:12:49,888 INFO L481 AbstractCegarLoop]: Abstraction has 8894 states and 13540 transitions. [2018-10-27 15:12:49,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:12:49,888 INFO L276 IsEmpty]: Start isEmpty. Operand 8894 states and 13540 transitions. [2018-10-27 15:12:49,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-27 15:12:49,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:12:49,893 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, 3, 3, 3, 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] [2018-10-27 15:12:49,894 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:12:49,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:12:49,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1480284689, now seen corresponding path program 1 times [2018-10-27 15:12:49,894 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:12:49,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:12:49,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:12:49,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:12:49,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:12:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:12:50,175 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:12:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 118 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 15:12:50,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:12:50,254 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:12:50,255 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-27 15:12:50,257 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2051], [2053], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2184], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 15:12:50,306 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:12:50,306 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:12:50,791 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:12:51,416 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 15:12:51,417 INFO L272 AbstractInterpreter]: Visited 92 different actions 92 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 15:12:51,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:12:51,463 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 15:12:52,381 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 78.33% of their original sizes. [2018-10-27 15:12:52,381 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 15:12:52,625 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-10-27 15:12:52,626 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 15:12:52,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:12:52,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-27 15:12:52,627 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:12:52,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:12:52,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:12:52,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:12:52,629 INFO L87 Difference]: Start difference. First operand 8894 states and 13540 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown