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/Problem10_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:11:02,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:11:02,651 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:11:02,666 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:11:02,667 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:11:02,668 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:11:02,671 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:11:02,673 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:11:02,676 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:11:02,676 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:11:02,684 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:11:02,684 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:11:02,686 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:11:02,689 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:11:02,690 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:11:02,691 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:11:02,693 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:11:02,696 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:11:02,699 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:11:02,702 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:11:02,703 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:11:02,704 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:11:02,706 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:11:02,707 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:11:02,707 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:11:02,708 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:11:02,708 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:11:02,711 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:11:02,711 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:11:02,712 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:11:02,713 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:11:02,713 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:11:02,713 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:11:02,713 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:11:02,716 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:11:02,717 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:11:02,717 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 14:11:02,740 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:11:02,740 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:11:02,741 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:11:02,741 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:11:02,742 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:11:02,742 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:11:02,742 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:11:02,742 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:11:02,742 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:11:02,743 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:11:02,743 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:11:02,743 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:11:02,744 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:11:02,744 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:11:02,744 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:11:02,744 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:11:02,745 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:11:02,745 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:11:02,745 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:11:02,745 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:11:02,746 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:11:02,746 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:11:02,746 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:11:02,746 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:11:02,746 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:11:02,747 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:11:02,747 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:11:02,747 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:11:02,747 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:11:02,747 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:11:02,748 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:11:02,748 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:11:02,748 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:11:02,748 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:11:02,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:11:02,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:11:02,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:11:02,823 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:11:02,823 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:11:02,824 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label00_true-unreach-call.c [2018-11-07 14:11:02,888 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3065b15b1/059010fdf3ab44ee90833be9a73d2297/FLAGa2b7cf6d1 [2018-11-07 14:11:03,425 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:11:03,426 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label00_true-unreach-call.c [2018-11-07 14:11:03,443 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3065b15b1/059010fdf3ab44ee90833be9a73d2297/FLAGa2b7cf6d1 [2018-11-07 14:11:03,465 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3065b15b1/059010fdf3ab44ee90833be9a73d2297 [2018-11-07 14:11:03,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:11:03,479 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:11:03,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:11:03,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:11:03,483 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:11:03,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:03" (1/1) ... [2018-11-07 14:11:03,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c54e251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:03, skipping insertion in model container [2018-11-07 14:11:03,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:11:03" (1/1) ... [2018-11-07 14:11:03,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:11:03,548 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:11:03,997 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:11:04,006 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:11:04,199 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:11:04,223 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:11:04,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:04 WrapperNode [2018-11-07 14:11:04,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:11:04,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:11:04,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:11:04,225 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:11:04,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:04" (1/1) ... [2018-11-07 14:11:04,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:04" (1/1) ... [2018-11-07 14:11:04,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:11:04,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:11:04,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:11:04,367 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:11:04,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:04" (1/1) ... [2018-11-07 14:11:04,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:04" (1/1) ... [2018-11-07 14:11:04,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:04" (1/1) ... [2018-11-07 14:11:04,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:04" (1/1) ... [2018-11-07 14:11:04,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:04" (1/1) ... [2018-11-07 14:11:04,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:04" (1/1) ... [2018-11-07 14:11:04,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:04" (1/1) ... [2018-11-07 14:11:04,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:11:04,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:11:04,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:11:04,478 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:11:04,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:04" (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 14:11:04,545 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:11:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:11:04,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:11:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:11:04,546 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:11:04,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:11:04,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:11:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:11:04,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:11:07,386 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:11:07,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:11:07 BoogieIcfgContainer [2018-11-07 14:11:07,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:11:07,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:11:07,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:11:07,391 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:11:07,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:11:03" (1/3) ... [2018-11-07 14:11:07,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445654e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:11:07, skipping insertion in model container [2018-11-07 14:11:07,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:11:04" (2/3) ... [2018-11-07 14:11:07,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445654e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:11:07, skipping insertion in model container [2018-11-07 14:11:07,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:11:07" (3/3) ... [2018-11-07 14:11:07,395 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label00_true-unreach-call.c [2018-11-07 14:11:07,404 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:11:07,411 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:11:07,426 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:11:07,462 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:11:07,463 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:11:07,463 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:11:07,463 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:11:07,463 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:11:07,464 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:11:07,464 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:11:07,464 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:11:07,493 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 14:11:07,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-07 14:11:07,510 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:11:07,511 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:11:07,514 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:11:07,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:11:07,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1416877404, now seen corresponding path program 1 times [2018-11-07 14:11:07,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:11:07,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:11:07,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:11:07,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:11:07,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:11:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:11:07,984 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:11:08,096 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 14:11:08,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:11:08,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:11:08,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:11:08,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:11:08,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:11:08,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:11:08,129 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 14:11:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:11:09,972 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 14:11:09,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:11:09,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-11-07 14:11:09,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:11:09,998 INFO L225 Difference]: With dead ends: 574 [2018-11-07 14:11:09,998 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 14:11:10,005 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:11:10,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 14:11:10,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 14:11:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 14:11:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-07 14:11:10,126 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 54 [2018-11-07 14:11:10,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:11:10,127 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-07 14:11:10,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:11:10,128 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-07 14:11:10,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 14:11:10,139 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:11:10,140 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:10,140 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:11:10,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:11:10,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1936663800, now seen corresponding path program 1 times [2018-11-07 14:11:10,141 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:11:10,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:11:10,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:11:10,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:11:10,143 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:11:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:11:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:11:10,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:11:10,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:11:10,514 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:11:10,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:11:10,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:11:10,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:11:10,517 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 4 states. [2018-11-07 14:11:12,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:11:12,484 INFO L93 Difference]: Finished difference Result 1282 states and 2328 transitions. [2018-11-07 14:11:12,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:11:12,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-11-07 14:11:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:11:12,496 INFO L225 Difference]: With dead ends: 1282 [2018-11-07 14:11:12,497 INFO L226 Difference]: Without dead ends: 932 [2018-11-07 14:11:12,501 INFO L604 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 [2018-11-07 14:11:12,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2018-11-07 14:11:12,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2018-11-07 14:11:12,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2018-11-07 14:11:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1469 transitions. [2018-11-07 14:11:12,556 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1469 transitions. Word has length 174 [2018-11-07 14:11:12,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:11:12,557 INFO L480 AbstractCegarLoop]: Abstraction has 932 states and 1469 transitions. [2018-11-07 14:11:12,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:11:12,557 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1469 transitions. [2018-11-07 14:11:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 14:11:12,569 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:11:12,569 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:12,570 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:11:12,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:11:12,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1693717853, now seen corresponding path program 1 times [2018-11-07 14:11:12,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:11:12,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:11:12,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:11:12,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:11:12,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:11:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:11:12,923 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:11:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:11:13,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:11:13,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:11:13,376 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:11:13,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:11:13,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:11:13,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:11:13,381 INFO L87 Difference]: Start difference. First operand 932 states and 1469 transitions. Second operand 6 states. [2018-11-07 14:11:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:11:17,547 INFO L93 Difference]: Finished difference Result 2162 states and 3509 transitions. [2018-11-07 14:11:17,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:11:17,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-11-07 14:11:17,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:11:17,562 INFO L225 Difference]: With dead ends: 2162 [2018-11-07 14:11:17,563 INFO L226 Difference]: Without dead ends: 1236 [2018-11-07 14:11:17,571 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:11:17,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2018-11-07 14:11:17,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1216. [2018-11-07 14:11:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2018-11-07 14:11:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1766 transitions. [2018-11-07 14:11:17,639 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1766 transitions. Word has length 181 [2018-11-07 14:11:17,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:11:17,640 INFO L480 AbstractCegarLoop]: Abstraction has 1216 states and 1766 transitions. [2018-11-07 14:11:17,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:11:17,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1766 transitions. [2018-11-07 14:11:17,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-07 14:11:17,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:11:17,648 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 14:11:17,648 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:11:17,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:11:17,649 INFO L82 PathProgramCache]: Analyzing trace with hash -200482757, now seen corresponding path program 1 times [2018-11-07 14:11:17,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:11:17,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:11:17,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:11:17,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:11:17,650 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:11:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:11:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 94 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:11:17,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:11:17,929 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:11:17,930 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-11-07 14:11:17,932 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], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [494], [495], [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], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [722], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 14:11:17,994 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:11:17,994 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:11:18,587 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:11:18,591 INFO L272 AbstractInterpreter]: Visited 132 different actions 132 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 14:11:18,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:11:18,643 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:11:19,238 INFO L227 lantSequenceWeakener]: Weakened 242 states. On average, predicates are now at 73.31% of their original sizes. [2018-11-07 14:11:19,238 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:11:19,557 INFO L415 sIntCurrentIteration]: We unified 250 AI predicates to 250 [2018-11-07 14:11:19,557 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:11:19,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:11:19,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 14:11:19,559 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:11:19,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:11:19,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:11:19,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:11:19,560 INFO L87 Difference]: Start difference. First operand 1216 states and 1766 transitions. Second operand 7 states. [2018-11-07 14:11:21,606 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:12:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:12:33,856 INFO L93 Difference]: Finished difference Result 2572 states and 3765 transitions. [2018-11-07 14:12:33,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:12:33,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2018-11-07 14:12:33,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:12:33,864 INFO L225 Difference]: With dead ends: 2572 [2018-11-07 14:12:33,864 INFO L226 Difference]: Without dead ends: 1362 [2018-11-07 14:12:33,870 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 251 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:12:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2018-11-07 14:12:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1360. [2018-11-07 14:12:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1360 states. [2018-11-07 14:12:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1918 transitions. [2018-11-07 14:12:33,908 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1918 transitions. Word has length 251 [2018-11-07 14:12:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:12:33,909 INFO L480 AbstractCegarLoop]: Abstraction has 1360 states and 1918 transitions. [2018-11-07 14:12:33,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 14:12:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1918 transitions. [2018-11-07 14:12:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-11-07 14:12:33,916 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:12:33,917 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:12:33,917 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:12:33,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:12:33,917 INFO L82 PathProgramCache]: Analyzing trace with hash 509477615, now seen corresponding path program 1 times [2018-11-07 14:12:33,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:12:33,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:12:33,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:12:33,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:12:33,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:12:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:12:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:12:34,236 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:12:34,236 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:12:34,237 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-11-07 14:12:34,237 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], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [333], [335], [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], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [722], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 14:12:34,243 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:12:34,243 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:12:34,353 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:12:35,171 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:12:35,171 INFO L272 AbstractInterpreter]: Visited 135 different actions 780 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 14:12:35,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:12:35,216 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:12:35,588 INFO L227 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 73.3% of their original sizes. [2018-11-07 14:12:35,589 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:12:36,064 INFO L415 sIntCurrentIteration]: We unified 260 AI predicates to 260 [2018-11-07 14:12:36,065 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:12:36,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:12:36,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 14:12:36,065 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:12:36,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 14:12:36,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 14:12:36,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 14:12:36,067 INFO L87 Difference]: Start difference. First operand 1360 states and 1918 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown