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/Problem14_label44_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:35:10,253 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:35:10,256 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:35:10,270 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:35:10,271 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:35:10,272 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:35:10,273 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:35:10,276 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:35:10,278 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:35:10,279 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:35:10,287 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:35:10,287 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:35:10,288 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:35:10,292 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:35:10,293 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:35:10,294 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:35:10,295 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:35:10,297 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:35:10,298 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:35:10,300 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:35:10,301 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:35:10,302 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:35:10,304 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:35:10,304 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:35:10,304 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:35:10,305 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:35:10,306 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:35:10,307 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:35:10,307 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:35:10,308 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:35:10,309 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:35:10,309 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:35:10,310 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:35:10,310 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:35:10,311 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:35:10,311 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:35:10,311 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 11:35:10,326 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:35:10,327 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:35:10,327 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:35:10,328 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:35:10,328 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:35:10,328 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:35:10,328 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:35:10,328 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:35:10,329 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:35:10,329 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:35:10,329 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:35:10,329 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:35:10,330 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:35:10,330 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:35:10,330 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:35:10,330 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:35:10,331 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:35:10,331 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:35:10,331 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:35:10,331 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:35:10,331 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:35:10,331 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:35:10,332 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:35:10,332 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:35:10,332 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:35:10,332 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:35:10,332 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:35:10,333 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:35:10,333 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:35:10,333 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:35:10,333 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:35:10,333 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:35:10,333 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:35:10,334 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:35:10,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:35:10,407 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:35:10,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:35:10,412 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:35:10,413 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:35:10,413 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label44_false-unreach-call_false-termination.c [2018-10-27 11:35:10,476 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3f8c4a7b9/e7c14c7a79b24fb6bd1f7a2179ecae99/FLAG4d38c97f8 [2018-10-27 11:35:11,121 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:35:11,123 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label44_false-unreach-call_false-termination.c [2018-10-27 11:35:11,140 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3f8c4a7b9/e7c14c7a79b24fb6bd1f7a2179ecae99/FLAG4d38c97f8 [2018-10-27 11:35:11,160 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3f8c4a7b9/e7c14c7a79b24fb6bd1f7a2179ecae99 [2018-10-27 11:35:11,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:35:11,175 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:35:11,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:35:11,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:35:11,183 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:35:11,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:35:11" (1/1) ... [2018-10-27 11:35:11,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a4a2b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11, skipping insertion in model container [2018-10-27 11:35:11,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:35:11" (1/1) ... [2018-10-27 11:35:11,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:35:11,264 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:35:11,758 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:35:11,765 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:35:11,929 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:35:11,947 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:35:11,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11 WrapperNode [2018-10-27 11:35:11,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:35:11,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:35:11,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:35:11,949 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:35:11,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11" (1/1) ... [2018-10-27 11:35:11,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11" (1/1) ... [2018-10-27 11:35:12,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:35:12,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:35:12,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:35:12,195 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:35:12,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11" (1/1) ... [2018-10-27 11:35:12,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11" (1/1) ... [2018-10-27 11:35:12,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11" (1/1) ... [2018-10-27 11:35:12,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11" (1/1) ... [2018-10-27 11:35:12,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11" (1/1) ... [2018-10-27 11:35:12,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11" (1/1) ... [2018-10-27 11:35:12,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11" (1/1) ... [2018-10-27 11:35:12,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:35:12,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:35:12,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:35:12,318 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:35:12,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11" (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 11:35:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:35:12,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:35:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:35:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:35:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:35:12,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:35:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:35:12,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:35:16,509 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:35:16,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:35:16 BoogieIcfgContainer [2018-10-27 11:35:16,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:35:16,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:35:16,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:35:16,515 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:35:16,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:35:11" (1/3) ... [2018-10-27 11:35:16,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cf4c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:35:16, skipping insertion in model container [2018-10-27 11:35:16,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:35:11" (2/3) ... [2018-10-27 11:35:16,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cf4c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:35:16, skipping insertion in model container [2018-10-27 11:35:16,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:35:16" (3/3) ... [2018-10-27 11:35:16,519 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label44_false-unreach-call_false-termination.c [2018-10-27 11:35:16,530 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:35:16,539 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:35:16,558 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:35:16,597 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:35:16,597 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:35:16,597 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:35:16,598 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:35:16,598 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:35:16,598 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:35:16,598 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:35:16,598 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:35:16,626 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 11:35:16,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 11:35:16,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:35:16,634 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:35:16,640 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:35:16,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:35:16,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1864594988, now seen corresponding path program 1 times [2018-10-27 11:35:16,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:35:16,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:35:16,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:35:16,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:35:16,704 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:35:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:35:17,029 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 11:35:17,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:35:17,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:35:17,032 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:35:17,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:35:17,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:35:17,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:35:17,054 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-27 11:35:20,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:35:20,268 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-10-27 11:35:20,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:35:20,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-27 11:35:20,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:35:20,303 INFO L225 Difference]: With dead ends: 894 [2018-10-27 11:35:20,304 INFO L226 Difference]: Without dead ends: 633 [2018-10-27 11:35:20,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:35:20,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-27 11:35:20,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-10-27 11:35:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 11:35:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-10-27 11:35:20,396 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 18 [2018-10-27 11:35:20,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:35:20,396 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-10-27 11:35:20,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:35:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-10-27 11:35:20,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-27 11:35:20,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:35:20,404 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:35:20,404 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:35:20,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:35:20,405 INFO L82 PathProgramCache]: Analyzing trace with hash 2115592732, now seen corresponding path program 1 times [2018-10-27 11:35:20,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:35:20,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:35:20,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:35:20,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:35:20,407 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:35:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:35:20,673 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:35:20,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:35:20,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:35:20,674 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:35:20,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:35:20,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:35:20,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:35:20,678 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-10-27 11:35:23,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:35:23,548 INFO L93 Difference]: Finished difference Result 1594 states and 2534 transitions. [2018-10-27 11:35:23,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:35:23,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2018-10-27 11:35:23,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:35:23,557 INFO L225 Difference]: With dead ends: 1594 [2018-10-27 11:35:23,557 INFO L226 Difference]: Without dead ends: 780 [2018-10-27 11:35:23,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:35:23,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2018-10-27 11:35:23,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2018-10-27 11:35:23,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2018-10-27 11:35:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1153 transitions. [2018-10-27 11:35:23,630 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1153 transitions. Word has length 102 [2018-10-27 11:35:23,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:35:23,630 INFO L481 AbstractCegarLoop]: Abstraction has 780 states and 1153 transitions. [2018-10-27 11:35:23,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:35:23,631 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1153 transitions. [2018-10-27 11:35:23,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-27 11:35:23,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:35:23,638 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:35:23,638 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:35:23,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:35:23,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1798704196, now seen corresponding path program 1 times [2018-10-27 11:35:23,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:35:23,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:35:23,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:35:23,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:35:23,641 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:35:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:35:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:35:24,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:35:24,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 11:35:24,137 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:35:24,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 11:35:24,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 11:35:24,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:35:24,138 INFO L87 Difference]: Start difference. First operand 780 states and 1153 transitions. Second operand 7 states. [2018-10-27 11:35:28,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:35:28,684 INFO L93 Difference]: Finished difference Result 2502 states and 3790 transitions. [2018-10-27 11:35:28,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 11:35:28,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2018-10-27 11:35:28,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:35:28,704 INFO L225 Difference]: With dead ends: 2502 [2018-10-27 11:35:28,705 INFO L226 Difference]: Without dead ends: 1728 [2018-10-27 11:35:28,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-10-27 11:35:28,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2018-10-27 11:35:28,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1659. [2018-10-27 11:35:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2018-10-27 11:35:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2352 transitions. [2018-10-27 11:35:28,789 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2352 transitions. Word has length 114 [2018-10-27 11:35:28,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:35:28,789 INFO L481 AbstractCegarLoop]: Abstraction has 1659 states and 2352 transitions. [2018-10-27 11:35:28,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 11:35:28,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2352 transitions. [2018-10-27 11:35:28,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-27 11:35:28,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:35:28,807 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:35:28,807 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:35:28,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:35:28,808 INFO L82 PathProgramCache]: Analyzing trace with hash 47001231, now seen corresponding path program 1 times [2018-10-27 11:35:28,808 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:35:28,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:35:28,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:35:28,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:35:28,809 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:35:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:35:29,115 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:35:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 11:35:29,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:35:29,235 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:35:29,236 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-10-27 11:35:29,238 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 11:35:29,283 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:35:29,284 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:35:29,800 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:35:29,802 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 11:35:29,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:35:29,848 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:35:30,244 INFO L227 lantSequenceWeakener]: Weakened 176 states. On average, predicates are now at 77.26% of their original sizes. [2018-10-27 11:35:30,244 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:35:30,610 INFO L415 sIntCurrentIteration]: We unified 184 AI predicates to 184 [2018-10-27 11:35:30,611 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:35:30,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:35:30,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-27 11:35:30,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:35:30,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 11:35:30,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 11:35:30,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:35:30,613 INFO L87 Difference]: Start difference. First operand 1659 states and 2352 transitions. Second operand 7 states. [2018-10-27 11:35:32,716 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown