java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:01:01,420 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:01:01,422 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:01:01,440 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:01:01,440 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:01:01,442 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:01:01,444 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:01:01,446 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:01:01,449 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:01:01,457 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:01:01,458 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:01:01,459 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:01:01,460 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:01:01,460 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:01:01,464 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:01:01,465 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:01:01,466 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:01:01,469 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:01:01,475 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:01:01,477 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:01:01,477 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:01:01,481 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:01:01,484 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:01:01,485 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:01:01,485 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:01:01,486 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:01:01,487 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:01:01,487 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:01:01,488 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:01:01,489 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:01:01,489 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:01:01,490 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:01:01,490 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:01:01,490 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:01:01,493 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:01:01,493 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:01:01,494 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:01:01,521 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:01:01,522 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:01:01,523 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:01:01,523 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:01:01,523 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:01:01,523 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:01:01,523 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:01:01,527 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:01:01,527 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:01:01,527 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:01:01,527 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:01:01,528 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:01:01,528 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:01:01,529 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:01:01,529 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:01:01,529 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:01:01,529 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:01:01,529 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:01:01,530 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:01:01,530 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:01:01,530 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:01:01,530 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:01:01,530 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:01:01,531 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:01:01,531 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:01:01,531 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:01:01,531 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:01:01,531 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:01:01,532 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:01:01,532 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:01:01,532 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:01:01,532 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:01:01,532 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:01:01,532 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:01:01,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:01:01,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:01:01,598 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:01:01,600 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:01:01,600 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:01:01,601 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c [2018-11-07 15:01:01,661 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205cf62f2/e1c0c40a58e746919addc1c7bcde2564/FLAGf54baa5c5 [2018-11-07 15:01:02,303 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:01:02,304 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c [2018-11-07 15:01:02,317 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205cf62f2/e1c0c40a58e746919addc1c7bcde2564/FLAGf54baa5c5 [2018-11-07 15:01:02,333 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205cf62f2/e1c0c40a58e746919addc1c7bcde2564 [2018-11-07 15:01:02,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:01:02,346 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:01:02,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:01:02,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:01:02,351 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:01:02,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:01:02" (1/1) ... [2018-11-07 15:01:02,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eddc215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:02, skipping insertion in model container [2018-11-07 15:01:02,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:01:02" (1/1) ... [2018-11-07 15:01:02,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:01:02,430 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:01:02,951 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:01:02,957 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:01:03,125 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:01:03,147 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:01:03,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:03 WrapperNode [2018-11-07 15:01:03,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:01:03,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:01:03,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:01:03,149 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:01:03,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:03" (1/1) ... [2018-11-07 15:01:03,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:03" (1/1) ... [2018-11-07 15:01:03,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:01:03,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:01:03,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:01:03,329 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:01:03,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:03" (1/1) ... [2018-11-07 15:01:03,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:03" (1/1) ... [2018-11-07 15:01:03,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:03" (1/1) ... [2018-11-07 15:01:03,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:03" (1/1) ... [2018-11-07 15:01:03,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:03" (1/1) ... [2018-11-07 15:01:03,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:03" (1/1) ... [2018-11-07 15:01:03,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:03" (1/1) ... [2018-11-07 15:01:03,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:01:03,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:01:03,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:01:03,454 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:01:03,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:01:03,523 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:01:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:01:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:01:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:01:03,524 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:01:03,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:01:03,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:01:03,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:01:03,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:01:07,375 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:01:07,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:01:07 BoogieIcfgContainer [2018-11-07 15:01:07,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:01:07,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:01:07,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:01:07,388 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:01:07,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:01:02" (1/3) ... [2018-11-07 15:01:07,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281c9871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:01:07, skipping insertion in model container [2018-11-07 15:01:07,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:01:03" (2/3) ... [2018-11-07 15:01:07,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281c9871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:01:07, skipping insertion in model container [2018-11-07 15:01:07,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:01:07" (3/3) ... [2018-11-07 15:01:07,397 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label23_true-unreach-call_false-termination.c [2018-11-07 15:01:07,408 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:01:07,421 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:01:07,441 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:01:07,492 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:01:07,492 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:01:07,492 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:01:07,492 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:01:07,492 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:01:07,493 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:01:07,493 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:01:07,493 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:01:07,534 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 15:01:07,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-07 15:01:07,542 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:01:07,543 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:01:07,546 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:01:07,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:01:07,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1395557711, now seen corresponding path program 1 times [2018-11-07 15:01:07,555 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:01:07,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:01:07,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:01:07,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:01:07,604 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:01:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:01:08,001 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:01:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:01:08,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:01:08,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:01:08,028 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:01:08,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:01:08,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:01:08,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:01:08,050 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 15:01:10,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:01:10,045 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 15:01:10,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:01:10,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-11-07 15:01:10,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:01:10,068 INFO L225 Difference]: With dead ends: 691 [2018-11-07 15:01:10,069 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 15:01:10,077 INFO L604 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 [2018-11-07 15:01:10,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 15:01:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 15:01:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 15:01:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 15:01:10,168 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 39 [2018-11-07 15:01:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:01:10,169 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 15:01:10,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:01:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 15:01:10,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 15:01:10,177 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:01:10,177 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:01:10,179 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:01:10,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:01:10,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1621257519, now seen corresponding path program 1 times [2018-11-07 15:01:10,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:01:10,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:01:10,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:01:10,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:01:10,183 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:01:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:01:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:01:10,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:01:10,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:01:10,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:01:10,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:01:10,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:01:10,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:01:10,509 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 15:01:12,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:01:12,471 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-07 15:01:12,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:01:12,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-11-07 15:01:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:01:12,478 INFO L225 Difference]: With dead ends: 1062 [2018-11-07 15:01:12,478 INFO L226 Difference]: Without dead ends: 634 [2018-11-07 15:01:12,481 INFO L604 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 [2018-11-07 15:01:12,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-07 15:01:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-07 15:01:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-07 15:01:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-07 15:01:12,528 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 114 [2018-11-07 15:01:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:01:12,529 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-07 15:01:12,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:01:12,529 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-07 15:01:12,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-07 15:01:12,533 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:01:12,533 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:01:12,533 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:01:12,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:01:12,534 INFO L82 PathProgramCache]: Analyzing trace with hash -985362584, now seen corresponding path program 1 times [2018-11-07 15:01:12,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:01:12,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:01:12,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:01:12,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:01:12,536 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:01:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:01:13,027 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:01:13,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:01:13,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:01:13,028 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:01:13,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:01:13,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:01:13,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:01:13,030 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 6 states. [2018-11-07 15:01:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:01:19,000 INFO L93 Difference]: Finished difference Result 1812 states and 2965 transitions. [2018-11-07 15:01:19,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 15:01:19,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-11-07 15:01:19,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:01:19,012 INFO L225 Difference]: With dead ends: 1812 [2018-11-07 15:01:19,012 INFO L226 Difference]: Without dead ends: 1193 [2018-11-07 15:01:19,019 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:01:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2018-11-07 15:01:19,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1138. [2018-11-07 15:01:19,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2018-11-07 15:01:19,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1729 transitions. [2018-11-07 15:01:19,084 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1729 transitions. Word has length 123 [2018-11-07 15:01:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:01:19,084 INFO L480 AbstractCegarLoop]: Abstraction has 1138 states and 1729 transitions. [2018-11-07 15:01:19,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:01:19,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1729 transitions. [2018-11-07 15:01:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-11-07 15:01:19,101 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:01:19,101 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:01:19,101 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:01:19,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:01:19,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1921964902, now seen corresponding path program 1 times [2018-11-07 15:01:19,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:01:19,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:01:19,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:01:19,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:01:19,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:01:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:01:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:01:19,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:01:19,949 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:01:19,950 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-11-07 15:01:19,952 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [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], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 15:01:20,007 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:01:20,008 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:01:20,737 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:01:20,741 INFO L272 AbstractInterpreter]: Visited 93 different actions 179 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 15:01:20,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:01:20,780 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:01:21,486 INFO L227 lantSequenceWeakener]: Weakened 51 states. On average, predicates are now at 77.36% of their original sizes. [2018-11-07 15:01:21,486 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:01:23,730 INFO L415 sIntCurrentIteration]: We unified 207 AI predicates to 207 [2018-11-07 15:01:23,730 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:01:23,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:01:23,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [12] total 32 [2018-11-07 15:01:23,732 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:01:23,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 15:01:23,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 15:01:23,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2018-11-07 15:01:23,734 INFO L87 Difference]: Start difference. First operand 1138 states and 1729 transitions. Second operand 22 states. [2018-11-07 15:01:37,650 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