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/Problem14_label52_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:32:58,415 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:32:58,417 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:32:58,435 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:32:58,435 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:32:58,436 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:32:58,438 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:32:58,440 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:32:58,441 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:32:58,442 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:32:58,443 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:32:58,443 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:32:58,444 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:32:58,445 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:32:58,447 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:32:58,447 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:32:58,448 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:32:58,450 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:32:58,452 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:32:58,454 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:32:58,455 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:32:58,456 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:32:58,459 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:32:58,459 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:32:58,460 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:32:58,460 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:32:58,462 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:32:58,462 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:32:58,463 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:32:58,464 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:32:58,465 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:32:58,465 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 18:32:58,468 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 18:32:58,487 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:32:58,488 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:32:58,489 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:32:58,489 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:32:58,489 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:32:58,489 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:32:58,490 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:32:58,493 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:32:58,493 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:32:58,493 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:32:58,494 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:32:58,494 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:32:58,495 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:32:58,495 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:32:58,495 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:32:58,495 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:32:58,495 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:32:58,496 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:32:58,498 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:32:58,498 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:32:58,498 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:32:58,499 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:32:58,499 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:32:58,499 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:32:58,499 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:32:58,499 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:32:58,500 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:32:58,500 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:32:58,500 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:32:58,500 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:32:58,500 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:32:58,500 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:32:58,501 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:32:58,501 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:32:58,556 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:32:58,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:32:58,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:32:58,579 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:32:58,580 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:32:58,581 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label52_false-unreach-call_false-termination.c [2018-10-24 18:32:58,648 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8555df9fe/799d1bb8fbf34c21bef55d13c09ae19f/FLAG38f726784 [2018-10-24 18:32:59,246 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:32:59,247 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label52_false-unreach-call_false-termination.c [2018-10-24 18:32:59,266 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8555df9fe/799d1bb8fbf34c21bef55d13c09ae19f/FLAG38f726784 [2018-10-24 18:32:59,292 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8555df9fe/799d1bb8fbf34c21bef55d13c09ae19f [2018-10-24 18:32:59,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:32:59,308 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:32:59,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:32:59,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:32:59,317 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:32:59,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:32:59" (1/1) ... [2018-10-24 18:32:59,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec89115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:32:59, skipping insertion in model container [2018-10-24 18:32:59,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:32:59" (1/1) ... [2018-10-24 18:32:59,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:32:59,403 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:32:59,915 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:32:59,921 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:33:00,054 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:33:00,073 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:33:00,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:00 WrapperNode [2018-10-24 18:33:00,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:33:00,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:33:00,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:33:00,075 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:33:00,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:00" (1/1) ... [2018-10-24 18:33:00,108 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:00" (1/1) ... [2018-10-24 18:33:00,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:33:00,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:33:00,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:33:00,291 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:33:00,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:00" (1/1) ... [2018-10-24 18:33:00,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:00" (1/1) ... [2018-10-24 18:33:00,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:00" (1/1) ... [2018-10-24 18:33:00,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:00" (1/1) ... [2018-10-24 18:33:00,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:00" (1/1) ... [2018-10-24 18:33:00,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:00" (1/1) ... [2018-10-24 18:33:00,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:00" (1/1) ... [2018-10-24 18:33:00,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:33:00,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:33:00,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:33:00,407 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:33:00,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:00" (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 18:33:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:33:00,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:33:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:33:00,492 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:33:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:33:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:33:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:33:00,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:33:04,056 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:33:04,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:33:04 BoogieIcfgContainer [2018-10-24 18:33:04,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:33:04,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:33:04,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:33:04,062 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:33:04,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:32:59" (1/3) ... [2018-10-24 18:33:04,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337c95b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:33:04, skipping insertion in model container [2018-10-24 18:33:04,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:33:00" (2/3) ... [2018-10-24 18:33:04,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337c95b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:33:04, skipping insertion in model container [2018-10-24 18:33:04,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:33:04" (3/3) ... [2018-10-24 18:33:04,069 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label52_false-unreach-call_false-termination.c [2018-10-24 18:33:04,079 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:33:04,089 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:33:04,107 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:33:04,146 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:33:04,146 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:33:04,146 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:33:04,147 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:33:04,147 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:33:04,147 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:33:04,147 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:33:04,147 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:33:04,174 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 18:33:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-24 18:33:04,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:04,184 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] [2018-10-24 18:33:04,190 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:04,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:04,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1208637865, now seen corresponding path program 1 times [2018-10-24 18:33:04,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:04,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:04,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:04,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:04,256 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:04,660 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 18:33:04,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:04,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:33:04,666 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:04,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:33:04,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:33:04,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:33:04,697 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 18:33:06,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:06,563 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 18:33:06,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:33:06,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-10-24 18:33:06,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:06,593 INFO L225 Difference]: With dead ends: 691 [2018-10-24 18:33:06,593 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 18:33:06,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:33:06,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 18:33:06,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 18:33:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 18:33:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 18:33:06,694 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 29 [2018-10-24 18:33:06,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:06,695 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 18:33:06,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:33:06,695 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 18:33:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 18:33:06,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:06,702 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:06,702 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:06,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:06,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1035560415, now seen corresponding path program 1 times [2018-10-24 18:33:06,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:06,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:06,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:06,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:06,705 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:07,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:07,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:33:07,055 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:07,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:33:07,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:33:07,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:33:07,058 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 18:33:09,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:09,081 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-24 18:33:09,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:33:09,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-24 18:33:09,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:09,090 INFO L225 Difference]: With dead ends: 1062 [2018-10-24 18:33:09,090 INFO L226 Difference]: Without dead ends: 634 [2018-10-24 18:33:09,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:33:09,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-24 18:33:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-24 18:33:09,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-24 18:33:09,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-24 18:33:09,136 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 116 [2018-10-24 18:33:09,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:09,136 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-24 18:33:09,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:33:09,137 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-24 18:33:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 18:33:09,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:09,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:09,141 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:09,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:09,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2098713064, now seen corresponding path program 1 times [2018-10-24 18:33:09,141 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:09,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:09,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:09,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:09,143 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:33:09,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:33:09,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:33:09,452 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:09,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:33:09,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:33:09,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:33:09,454 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-24 18:33:13,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:13,787 INFO L93 Difference]: Finished difference Result 2352 states and 4016 transitions. [2018-10-24 18:33:13,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:33:13,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2018-10-24 18:33:13,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:13,814 INFO L225 Difference]: With dead ends: 2352 [2018-10-24 18:33:13,815 INFO L226 Difference]: Without dead ends: 1733 [2018-10-24 18:33:13,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 18:33:13,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-10-24 18:33:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-10-24 18:33:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-10-24 18:33:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2647 transitions. [2018-10-24 18:33:13,896 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2647 transitions. Word has length 125 [2018-10-24 18:33:13,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:13,897 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2647 transitions. [2018-10-24 18:33:13,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:33:13,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2647 transitions. [2018-10-24 18:33:13,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-24 18:33:13,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:13,911 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:33:13,912 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:13,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:13,912 INFO L82 PathProgramCache]: Analyzing trace with hash -839398590, now seen corresponding path program 1 times [2018-10-24 18:33:13,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:13,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:13,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:13,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:13,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:14,465 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-24 18:33:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 44 proven. 107 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:33:15,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:33:15,056 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:33:15,057 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-10-24 18:33:15,059 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [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], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:33:15,135 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:33:15,135 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:33:17,912 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:33:20,593 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:33:20,595 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:33:20,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:20,639 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:33:23,746 INFO L232 lantSequenceWeakener]: Weakened 246 states. On average, predicates are now at 77.56% of their original sizes. [2018-10-24 18:33:23,747 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:33:24,234 INFO L413 sIntCurrentIteration]: We have 253 unified AI predicates [2018-10-24 18:33:24,235 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:33:24,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:33:24,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-24 18:33:24,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:33:24,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:33:24,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:33:24,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:33:24,238 INFO L87 Difference]: Start difference. First operand 1733 states and 2647 transitions. Second operand 7 states. [2018-10-24 18:33:37,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:33:37,957 INFO L93 Difference]: Finished difference Result 3645 states and 5568 transitions. [2018-10-24 18:33:37,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:33:37,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2018-10-24 18:33:37,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:33:38,047 INFO L225 Difference]: With dead ends: 3645 [2018-10-24 18:33:38,048 INFO L226 Difference]: Without dead ends: 1918 [2018-10-24 18:33:38,055 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 254 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:33:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-10-24 18:33:38,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-10-24 18:33:38,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-10-24 18:33:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2838 transitions. [2018-10-24 18:33:38,124 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2838 transitions. Word has length 254 [2018-10-24 18:33:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:33:38,125 INFO L481 AbstractCegarLoop]: Abstraction has 1916 states and 2838 transitions. [2018-10-24 18:33:38,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:33:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2838 transitions. [2018-10-24 18:33:38,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-24 18:33:38,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:33:38,138 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:33:38,139 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:33:38,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:38,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1746897264, now seen corresponding path program 1 times [2018-10-24 18:33:38,139 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:33:38,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:38,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:33:38,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:33:38,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:33:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:33:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 154 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:33:38,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:33:38,954 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:33:38,954 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 340 with the following transitions: [2018-10-24 18:33:38,954 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [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], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:33:38,961 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:33:38,961 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:33:41,356 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:33:48,728 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:33:48,728 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:33:48,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:33:48,763 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:33:52,164 INFO L232 lantSequenceWeakener]: Weakened 125 states. On average, predicates are now at 78.16% of their original sizes. [2018-10-24 18:33:52,165 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:34:40,684 INFO L413 sIntCurrentIteration]: We have 338 unified AI predicates [2018-10-24 18:34:40,684 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:34:40,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:34:40,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [12] total 33 [2018-10-24 18:34:40,686 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:34:40,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 18:34:40,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 18:34:40,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2018-10-24 18:34:40,687 INFO L87 Difference]: Start difference. First operand 1916 states and 2838 transitions. Second operand 23 states. [2018-10-24 18:36:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:36:55,303 INFO L93 Difference]: Finished difference Result 4206 states and 6181 transitions. [2018-10-24 18:36:55,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-24 18:36:55,304 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 339 [2018-10-24 18:36:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:36:55,316 INFO L225 Difference]: With dead ends: 4206 [2018-10-24 18:36:55,316 INFO L226 Difference]: Without dead ends: 1921 [2018-10-24 18:36:55,326 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 352 GetRequests, 257 SyntacticMatches, 60 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 52.2s TimeCoverageRelationStatistics Valid=239, Invalid=1093, Unknown=0, NotChecked=0, Total=1332 [2018-10-24 18:36:55,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2018-10-24 18:36:55,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1916. [2018-10-24 18:36:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-10-24 18:36:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2832 transitions. [2018-10-24 18:36:55,425 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2832 transitions. Word has length 339 [2018-10-24 18:36:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:36:55,426 INFO L481 AbstractCegarLoop]: Abstraction has 1916 states and 2832 transitions. [2018-10-24 18:36:55,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-24 18:36:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2832 transitions. [2018-10-24 18:36:55,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-10-24 18:36:55,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:36:55,437 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:36:55,437 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:36:55,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:36:55,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1127648740, now seen corresponding path program 1 times [2018-10-24 18:36:55,438 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:36:55,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:36:55,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:36:55,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:36:55,439 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:36:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:36:55,962 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:36:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 79 proven. 316 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:36:56,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:36:56,860 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:36:56,860 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 366 with the following transitions: [2018-10-24 18:36:56,861 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [133], [135], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [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], [658], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:36:56,865 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:36:56,866 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:36:58,626 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:37:05,412 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:37:05,412 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:37:05,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:37:05,420 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... [2018-10-24 18:37:08,760 INFO L232 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 77.69% of their original sizes. [2018-10-24 18:37:08,761 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:37:08,857 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:37:08,861 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:37:08,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:37:08 BoogieIcfgContainer [2018-10-24 18:37:08,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:37:08,863 INFO L168 Benchmark]: Toolchain (without parser) took 249556.18 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 18:37:08,864 INFO L168 Benchmark]: CDTParser took 0.21 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 18:37:08,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.77 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:08,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 215.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:08,866 INFO L168 Benchmark]: Boogie Preprocessor took 115.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:08,867 INFO L168 Benchmark]: RCFGBuilder took 3650.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.5 MB). Peak memory consumption was 117.5 MB. Max. memory is 7.1 GB. [2018-10-24 18:37:08,868 INFO L168 Benchmark]: TraceAbstraction took 244803.28 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -524.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 18:37:08,874 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 763.77 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 215.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.94 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3650.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.5 MB). Peak memory consumption was 117.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244803.28 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -524.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 70). Cancelled while BasicCegarLoop was analyzing trace of length 366 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 244.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 156.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 829 SDtfs, 4335 SDslu, 389 SDs, 0 SdLazy, 5502 SolverSat, 1155 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 626 GetRequests, 512 SyntacticMatches, 63 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 53.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1916occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 23.9s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9959386144624021 AbsIntWeakeningRatio, 0.09424083769633508 AbsIntAvgWeakeningVarsNumRemoved, 388.8240837696335 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 863 NumberOfCodeBlocks, 863 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 858 ConstructedInterpolants, 0 QuantifiedInterpolants, 2200856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 252/548 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown