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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:04:44,496 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:04:44,500 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:04:44,512 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:04:44,513 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:04:44,514 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:04:44,515 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:04:44,517 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:04:44,519 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:04:44,519 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:04:44,520 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:04:44,521 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:04:44,521 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:04:44,522 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:04:44,523 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:04:44,524 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:04:44,525 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:04:44,527 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:04:44,529 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:04:44,531 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:04:44,532 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:04:44,535 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:04:44,537 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:04:44,541 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:04:44,541 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:04:44,542 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:04:44,545 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:04:44,546 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:04:44,547 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:04:44,549 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:04:44,549 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:04:44,550 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:04:44,550 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:04:44,550 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:04:44,551 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:04:44,552 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:04:44,552 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:04:44,577 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:04:44,577 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:04:44,578 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:04:44,578 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:04:44,578 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:04:44,578 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:04:44,579 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:04:44,579 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:04:44,580 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:04:44,580 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:04:44,580 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:04:44,580 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:04:44,581 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:04:44,581 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:04:44,581 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:04:44,581 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:04:44,582 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:04:44,582 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:04:44,582 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:04:44,582 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:04:44,582 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:04:44,583 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:04:44,584 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:04:44,585 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:04:44,585 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:04:44,585 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:04:44,585 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:04:44,585 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:04:44,586 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:04:44,586 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:04:44,586 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:04:44,586 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:04:44,586 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:04:44,586 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:04:44,648 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:04:44,667 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:04:44,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:04:44,675 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:04:44,675 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:04:44,676 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label03_true-unreach-call.c [2018-10-24 21:04:44,749 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e53a5120/ac2f80773f1c4e9b8d9dccee52fe87e1/FLAG607cae81e [2018-10-24 21:04:45,369 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:04:45,370 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label03_true-unreach-call.c [2018-10-24 21:04:45,391 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e53a5120/ac2f80773f1c4e9b8d9dccee52fe87e1/FLAG607cae81e [2018-10-24 21:04:45,411 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e53a5120/ac2f80773f1c4e9b8d9dccee52fe87e1 [2018-10-24 21:04:45,426 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:04:45,428 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:04:45,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:04:45,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:04:45,435 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:04:45,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:04:45" (1/1) ... [2018-10-24 21:04:45,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639b200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:45, skipping insertion in model container [2018-10-24 21:04:45,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:04:45" (1/1) ... [2018-10-24 21:04:45,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:04:45,534 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:04:46,118 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:04:46,125 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:04:46,384 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:04:46,405 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:04:46,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:46 WrapperNode [2018-10-24 21:04:46,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:04:46,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:04:46,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:04:46,407 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:04:46,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:46" (1/1) ... [2018-10-24 21:04:46,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:46" (1/1) ... [2018-10-24 21:04:46,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:04:46,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:04:46,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:04:46,715 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:04:46,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:46" (1/1) ... [2018-10-24 21:04:46,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:46" (1/1) ... [2018-10-24 21:04:46,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:46" (1/1) ... [2018-10-24 21:04:46,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:46" (1/1) ... [2018-10-24 21:04:46,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:46" (1/1) ... [2018-10-24 21:04:46,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:46" (1/1) ... [2018-10-24 21:04:46,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:46" (1/1) ... [2018-10-24 21:04:46,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:04:46,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:04:46,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:04:46,873 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:04:46,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:46" (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 [2018-10-24 21:04:46,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:04:46,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:04:46,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:04:46,933 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:04:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:04:46,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:04:46,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:04:46,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:04:51,567 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:04:51,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:04:51 BoogieIcfgContainer [2018-10-24 21:04:51,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:04:51,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:04:51,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:04:51,576 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:04:51,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:04:45" (1/3) ... [2018-10-24 21:04:51,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b3c6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:04:51, skipping insertion in model container [2018-10-24 21:04:51,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:04:46" (2/3) ... [2018-10-24 21:04:51,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b3c6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:04:51, skipping insertion in model container [2018-10-24 21:04:51,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:04:51" (3/3) ... [2018-10-24 21:04:51,580 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label03_true-unreach-call.c [2018-10-24 21:04:51,590 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:04:51,599 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:04:51,618 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:04:51,659 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:04:51,660 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:04:51,660 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:04:51,661 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:04:51,661 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:04:51,661 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:04:51,661 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:04:51,661 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:04:51,690 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:04:51,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 21:04:51,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:04:51,700 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] [2018-10-24 21:04:51,702 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:04:51,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:04:51,709 INFO L82 PathProgramCache]: Analyzing trace with hash -509521591, now seen corresponding path program 1 times [2018-10-24 21:04:51,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:04:51,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:04:51,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:04:51,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:04:51,763 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:04:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:04:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:04:52,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:04:52,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:04:52,189 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:04:52,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:04:52,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:04:52,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:04:52,214 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 21:04:55,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:04:55,631 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-10-24 21:04:55,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:04:55,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-10-24 21:04:55,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:04:55,661 INFO L225 Difference]: With dead ends: 985 [2018-10-24 21:04:55,661 INFO L226 Difference]: Without dead ends: 686 [2018-10-24 21:04:55,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:04:55,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-10-24 21:04:55,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-10-24 21:04:55,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-10-24 21:04:55,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-10-24 21:04:55,797 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 37 [2018-10-24 21:04:55,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:04:55,798 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-10-24 21:04:55,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:04:55,798 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-10-24 21:04:55,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 21:04:55,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:04:55,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:04:55,806 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:04:55,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:04:55,806 INFO L82 PathProgramCache]: Analyzing trace with hash -484596469, now seen corresponding path program 1 times [2018-10-24 21:04:55,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:04:55,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:04:55,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:04:55,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:04:55,808 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:04:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:04:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:04:56,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:04:56,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:04:56,277 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:04:56,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:04:56,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:04:56,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:04:56,280 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-10-24 21:05:01,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:05:01,555 INFO L93 Difference]: Finished difference Result 2340 states and 3736 transitions. [2018-10-24 21:05:01,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:05:01,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-10-24 21:05:01,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:05:01,578 INFO L225 Difference]: With dead ends: 2340 [2018-10-24 21:05:01,578 INFO L226 Difference]: Without dead ends: 1660 [2018-10-24 21:05:01,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:05:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2018-10-24 21:05:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1641. [2018-10-24 21:05:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2018-10-24 21:05:01,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2355 transitions. [2018-10-24 21:05:01,659 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2355 transitions. Word has length 118 [2018-10-24 21:05:01,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:05:01,660 INFO L481 AbstractCegarLoop]: Abstraction has 1641 states and 2355 transitions. [2018-10-24 21:05:01,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:05:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2355 transitions. [2018-10-24 21:05:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 21:05:01,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:05:01,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:05:01,668 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:05:01,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:05:01,668 INFO L82 PathProgramCache]: Analyzing trace with hash 984101383, now seen corresponding path program 1 times [2018-10-24 21:05:01,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:05:01,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:05:01,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:05:01,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:05:01,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:05:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:05:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:05:01,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:05:01,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:05:01,865 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:05:01,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:05:01,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:05:01,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:05:01,867 INFO L87 Difference]: Start difference. First operand 1641 states and 2355 transitions. Second operand 4 states. [2018-10-24 21:05:04,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:05:04,649 INFO L93 Difference]: Finished difference Result 6063 states and 9075 transitions. [2018-10-24 21:05:04,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:05:04,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-10-24 21:05:04,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:05:04,687 INFO L225 Difference]: With dead ends: 6063 [2018-10-24 21:05:04,688 INFO L226 Difference]: Without dead ends: 4428 [2018-10-24 21:05:04,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:05:04,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4428 states. [2018-10-24 21:05:04,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4428 to 4407. [2018-10-24 21:05:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4407 states. [2018-10-24 21:05:04,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4407 states to 4407 states and 6096 transitions. [2018-10-24 21:05:04,866 INFO L78 Accepts]: Start accepts. Automaton has 4407 states and 6096 transitions. Word has length 132 [2018-10-24 21:05:04,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:05:04,867 INFO L481 AbstractCegarLoop]: Abstraction has 4407 states and 6096 transitions. [2018-10-24 21:05:04,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:05:04,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4407 states and 6096 transitions. [2018-10-24 21:05:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-24 21:05:04,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:05:04,882 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, 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] [2018-10-24 21:05:04,882 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:05:04,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:05:04,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1801051533, now seen corresponding path program 1 times [2018-10-24 21:05:04,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:05:04,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:05:04,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:05:04,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:05:04,889 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:05:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:05:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 21:05:05,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:05:05,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:05:05,214 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:05:05,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:05:05,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:05:05,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:05:05,215 INFO L87 Difference]: Start difference. First operand 4407 states and 6096 transitions. Second operand 3 states. [2018-10-24 21:05:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:05:07,911 INFO L93 Difference]: Finished difference Result 10338 states and 14857 transitions. [2018-10-24 21:05:07,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:05:07,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-10-24 21:05:07,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:05:07,958 INFO L225 Difference]: With dead ends: 10338 [2018-10-24 21:05:07,959 INFO L226 Difference]: Without dead ends: 6126 [2018-10-24 21:05:07,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:05:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2018-10-24 21:05:08,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 5440. [2018-10-24 21:05:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5440 states. [2018-10-24 21:05:08,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5440 states to 5440 states and 7687 transitions. [2018-10-24 21:05:08,143 INFO L78 Accepts]: Start accepts. Automaton has 5440 states and 7687 transitions. Word has length 235 [2018-10-24 21:05:08,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:05:08,144 INFO L481 AbstractCegarLoop]: Abstraction has 5440 states and 7687 transitions. [2018-10-24 21:05:08,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:05:08,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5440 states and 7687 transitions. [2018-10-24 21:05:08,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-24 21:05:08,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:05:08,158 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:05:08,158 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:05:08,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:05:08,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1791653501, now seen corresponding path program 1 times [2018-10-24 21:05:08,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:05:08,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:05:08,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:05:08,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:05:08,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:05:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:05:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 246 proven. 76 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 21:05:08,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:05:08,894 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:05:08,895 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 315 with the following transitions: [2018-10-24 21:05:08,898 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:05:09,008 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:05:09,009 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:05:11,048 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:05:55,025 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 21:05:55,026 INFO L272 AbstractInterpreter]: Visited 127 different actions 865 times. Merged at 7 different actions 44 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-24 21:05:55,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:05:55,043 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 21:05:55,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:05:55,043 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:05:55,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:05:55,061 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:05:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:05:55,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:05:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 21:05:55,543 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 21:05:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 21:05:56,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 21:05:56,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 21:05:56,458 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 21:05:56,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 21:05:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 21:05:56,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-10-24 21:05:56,460 INFO L87 Difference]: Start difference. First operand 5440 states and 7687 transitions. Second operand 9 states. [2018-10-24 21:06:03,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:06:03,477 INFO L93 Difference]: Finished difference Result 18702 states and 29275 transitions. [2018-10-24 21:06:03,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-24 21:06:03,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 314 [2018-10-24 21:06:03,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:06:03,569 INFO L225 Difference]: With dead ends: 18702 [2018-10-24 21:06:03,570 INFO L226 Difference]: Without dead ends: 13457 [2018-10-24 21:06:03,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 648 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=289, Invalid=971, Unknown=0, NotChecked=0, Total=1260 [2018-10-24 21:06:03,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13457 states. [2018-10-24 21:06:04,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13457 to 13256. [2018-10-24 21:06:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13256 states. [2018-10-24 21:06:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13256 states to 13256 states and 17662 transitions. [2018-10-24 21:06:04,090 INFO L78 Accepts]: Start accepts. Automaton has 13256 states and 17662 transitions. Word has length 314 [2018-10-24 21:06:04,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:06:04,091 INFO L481 AbstractCegarLoop]: Abstraction has 13256 states and 17662 transitions. [2018-10-24 21:06:04,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 21:06:04,092 INFO L276 IsEmpty]: Start isEmpty. Operand 13256 states and 17662 transitions. [2018-10-24 21:06:04,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-10-24 21:06:04,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:06:04,190 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:06:04,191 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:06:04,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:06:04,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1723905372, now seen corresponding path program 1 times [2018-10-24 21:06:04,192 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:06:04,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:06:04,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:06:04,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:06:04,194 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:06:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:06:04,658 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 21:06:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-10-24 21:06:04,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:06:04,762 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:06:04,763 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-10-24 21:06:04,763 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [997], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:06:04,772 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:06:04,773 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:06:06,730 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:06:39,229 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:06:39,229 INFO L272 AbstractInterpreter]: Visited 186 different actions 545 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:06:39,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:06:39,241 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:06:45,820 INFO L232 lantSequenceWeakener]: Weakened 44 states. On average, predicates are now at 74.56% of their original sizes. [2018-10-24 21:06:45,820 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 21:08:53,819 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:08:53,825 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:08:53,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:08:53 BoogieIcfgContainer [2018-10-24 21:08:53,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:08:53,827 INFO L168 Benchmark]: Toolchain (without parser) took 248399.80 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 440.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:08:53,828 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:08:53,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 975.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:08:53,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 307.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -845.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:08:53,830 INFO L168 Benchmark]: Boogie Preprocessor took 158.00 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:08:53,831 INFO L168 Benchmark]: RCFGBuilder took 4695.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 185.9 MB). Peak memory consumption was 185.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:08:53,832 INFO L168 Benchmark]: TraceAbstraction took 242256.70 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 3.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 296.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:08:53,837 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 975.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 307.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -845.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.00 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4695.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 185.9 MB). Peak memory consumption was 185.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 242256.70 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 3.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 296.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 96). Cancelled while BasicCegarLoop was analyzing trace of length 425 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 17 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 242.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 21.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 997 SDtfs, 5285 SDslu, 870 SDs, 0 SdLazy, 7944 SolverSat, 2434 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 708 GetRequests, 661 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13256occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 80.6s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9968416575981592 AbsIntWeakeningRatio, 0.0851063829787234 AbsIntAvgWeakeningVarsNumRemoved, 1003.2340425531914 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 927 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1150 NumberOfCodeBlocks, 1150 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1457 ConstructedInterpolants, 0 QuantifiedInterpolants, 846955 SizeOfPredicates, 1 NumberOfNonLiveVariables, 556 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 1108/1188 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown