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/Problem16_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:48:52,292 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:48:52,294 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:48:52,307 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:48:52,308 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:48:52,309 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:48:52,310 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:48:52,312 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:48:52,313 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:48:52,314 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:48:52,315 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:48:52,316 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:48:52,316 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:48:52,317 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:48:52,319 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:48:52,319 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:48:52,320 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:48:52,322 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:48:52,324 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:48:52,327 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:48:52,328 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:48:52,329 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:48:52,333 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:48:52,335 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:48:52,335 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:48:52,338 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:48:52,339 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:48:52,343 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:48:52,343 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:48:52,346 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:48:52,347 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:48:52,350 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:48:52,350 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:48:52,351 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:48:52,351 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:48:52,354 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:48:52,355 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 11:48:52,382 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:48:52,382 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:48:52,383 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:48:52,383 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:48:52,383 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:48:52,387 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:48:52,387 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:48:52,387 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:48:52,387 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:48:52,387 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:48:52,388 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:48:52,388 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:48:52,389 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:48:52,389 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:48:52,390 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:48:52,390 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:48:52,390 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:48:52,390 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:48:52,390 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:48:52,390 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:48:52,392 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:48:52,393 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:48:52,393 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:48:52,393 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:48:52,393 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:48:52,393 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:48:52,394 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:48:52,394 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:48:52,394 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:48:52,394 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:48:52,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:48:52,395 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:48:52,395 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:48:52,395 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:48:52,451 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:48:52,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:48:52,468 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:48:52,470 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:48:52,470 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:48:52,471 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label31_false-unreach-call.c [2018-10-27 11:48:52,532 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1c8ba46e/c1dd455c62be419fbc82c99ba5b12b9f/FLAG9f2efcf6c [2018-10-27 11:48:53,223 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:48:53,224 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label31_false-unreach-call.c [2018-10-27 11:48:53,244 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1c8ba46e/c1dd455c62be419fbc82c99ba5b12b9f/FLAG9f2efcf6c [2018-10-27 11:48:53,268 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1c8ba46e/c1dd455c62be419fbc82c99ba5b12b9f [2018-10-27 11:48:53,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:48:53,284 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:48:53,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:48:53,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:48:53,289 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:48:53,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:48:53" (1/1) ... [2018-10-27 11:48:53,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96182d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:53, skipping insertion in model container [2018-10-27 11:48:53,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:48:53" (1/1) ... [2018-10-27 11:48:53,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:48:53,412 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:48:54,264 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:48:54,269 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:48:54,510 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:48:54,533 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:48:54,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:54 WrapperNode [2018-10-27 11:48:54,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:48:54,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:48:54,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:48:54,536 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:48:54,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:54" (1/1) ... [2018-10-27 11:48:54,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:54" (1/1) ... [2018-10-27 11:48:54,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:48:54,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:48:54,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:48:54,905 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:48:54,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:54" (1/1) ... [2018-10-27 11:48:54,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:54" (1/1) ... [2018-10-27 11:48:54,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:54" (1/1) ... [2018-10-27 11:48:54,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:54" (1/1) ... [2018-10-27 11:48:55,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:54" (1/1) ... [2018-10-27 11:48:55,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:54" (1/1) ... [2018-10-27 11:48:55,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:54" (1/1) ... [2018-10-27 11:48:55,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:48:55,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:48:55,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:48:55,109 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:48:55,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:54" (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 11:48:55,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:48:55,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:48:55,182 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 11:48:55,182 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 11:48:55,183 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:48:55,183 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:48:55,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:48:55,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:48:55,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:48:55,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:49:00,302 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:49:00,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:49:00 BoogieIcfgContainer [2018-10-27 11:49:00,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:49:00,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:49:00,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:49:00,308 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:49:00,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:48:53" (1/3) ... [2018-10-27 11:49:00,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0032b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:49:00, skipping insertion in model container [2018-10-27 11:49:00,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:48:54" (2/3) ... [2018-10-27 11:49:00,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0032b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:49:00, skipping insertion in model container [2018-10-27 11:49:00,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:49:00" (3/3) ... [2018-10-27 11:49:00,312 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label31_false-unreach-call.c [2018-10-27 11:49:00,322 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:49:00,330 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:49:00,348 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:49:00,389 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:49:00,390 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:49:00,390 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:49:00,390 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:49:00,390 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:49:00,390 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:49:00,391 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:49:00,391 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:49:00,422 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 11:49:00,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 11:49:00,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:49:00,430 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:49:00,432 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:49:00,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:49:00,439 INFO L82 PathProgramCache]: Analyzing trace with hash -678316285, now seen corresponding path program 1 times [2018-10-27 11:49:00,442 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:49:00,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:00,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:49:00,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:00,494 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:49:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:49:00,852 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 11:49:00,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:49:00,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 11:49:00,856 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:49:00,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 11:49:00,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 11:49:00,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:49:00,876 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 11:49:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:49:05,019 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 11:49:05,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 11:49:05,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-27 11:49:05,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:49:05,044 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 11:49:05,044 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 11:49:05,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:49:05,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 11:49:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 11:49:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 11:49:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-27 11:49:05,174 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 15 [2018-10-27 11:49:05,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:49:05,175 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-27 11:49:05,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 11:49:05,175 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-27 11:49:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-27 11:49:05,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:49:05,185 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:49:05,185 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:49:05,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:49:05,187 INFO L82 PathProgramCache]: Analyzing trace with hash -539132716, now seen corresponding path program 1 times [2018-10-27 11:49:05,187 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:49:05,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:05,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:49:05,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:05,190 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:49:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:49:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:49:05,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:49:05,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 11:49:05,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:49:05,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 11:49:05,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 11:49:05,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 11:49:05,509 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-10-27 11:49:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:49:11,358 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-10-27 11:49:11,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:49:11,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2018-10-27 11:49:11,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:49:11,375 INFO L225 Difference]: With dead ends: 2194 [2018-10-27 11:49:11,376 INFO L226 Difference]: Without dead ends: 1456 [2018-10-27 11:49:11,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 11:49:11,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-10-27 11:49:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-10-27 11:49:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-27 11:49:11,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-10-27 11:49:11,451 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 85 [2018-10-27 11:49:11,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:49:11,451 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-10-27 11:49:11,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 11:49:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-10-27 11:49:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-27 11:49:11,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:49:11,457 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:49:11,457 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:49:11,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:49:11,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1336916587, now seen corresponding path program 1 times [2018-10-27 11:49:11,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:49:11,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:11,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:49:11,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:11,459 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:49:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:49:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:49:11,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:49:11,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:49:11,799 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:49:11,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:49:11,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:49:11,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:49:11,800 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-10-27 11:49:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:49:19,031 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-10-27 11:49:19,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:49:19,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-10-27 11:49:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:49:19,059 INFO L225 Difference]: With dead ends: 3936 [2018-10-27 11:49:19,059 INFO L226 Difference]: Without dead ends: 2506 [2018-10-27 11:49:19,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 11:49:19,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-10-27 11:49:19,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-10-27 11:49:19,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-10-27 11:49:19,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-10-27 11:49:19,168 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 114 [2018-10-27 11:49:19,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:49:19,169 INFO L481 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-10-27 11:49:19,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:49:19,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-10-27 11:49:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-27 11:49:19,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:49:19,179 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:49:19,180 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:49:19,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:49:19,181 INFO L82 PathProgramCache]: Analyzing trace with hash -432327143, now seen corresponding path program 1 times [2018-10-27 11:49:19,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:49:19,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:19,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:49:19,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:19,183 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:49:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:49:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:49:19,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:49:19,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:49:19,440 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:49:19,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:49:19,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:49:19,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:49:19,442 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-10-27 11:49:23,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:49:23,549 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-10-27 11:49:23,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:49:23,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-10-27 11:49:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:49:23,573 INFO L225 Difference]: With dead ends: 6050 [2018-10-27 11:49:23,573 INFO L226 Difference]: Without dead ends: 3577 [2018-10-27 11:49:23,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 11:49:23,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-10-27 11:49:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-10-27 11:49:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-10-27 11:49:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-10-27 11:49:23,690 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 132 [2018-10-27 11:49:23,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:49:23,691 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-10-27 11:49:23,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:49:23,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-10-27 11:49:23,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-27 11:49:23,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:49:23,695 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:23,695 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:49:23,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:49:23,696 INFO L82 PathProgramCache]: Analyzing trace with hash 2013316637, now seen corresponding path program 1 times [2018-10-27 11:49:23,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:49:23,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:23,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:49:23,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:49:23,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:49:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:49:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 11:49:24,006 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:49:24,006 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:49:24,007 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 216 with the following transitions: [2018-10-27 11:49:24,009 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [199], [201], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 11:49:24,097 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:49:24,097 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:49:24,821 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:49:24,822 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 11:49:24,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:49:24,866 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:49:25,376 INFO L227 lantSequenceWeakener]: Weakened 206 states. On average, predicates are now at 77.19% of their original sizes. [2018-10-27 11:49:25,377 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:49:25,620 INFO L415 sIntCurrentIteration]: We unified 214 AI predicates to 214 [2018-10-27 11:49:25,620 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:49:25,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:49:25,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2018-10-27 11:49:25,622 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:49:25,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 11:49:25,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 11:49:25,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 11:49:25,624 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 8 states. [2018-10-27 11:49:28,313 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