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/Problem17_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:29:04,343 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:29:04,345 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:29:04,361 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:29:04,362 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:29:04,363 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:29:04,365 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:29:04,368 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:29:04,372 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:29:04,381 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:29:04,382 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:29:04,382 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:29:04,384 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:29:04,385 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:29:04,388 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:29:04,389 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:29:04,390 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:29:04,392 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:29:04,396 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:29:04,397 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:29:04,398 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:29:04,402 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:29:04,405 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 03:29:04,405 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 03:29:04,405 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 03:29:04,406 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 03:29:04,407 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 03:29:04,408 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 03:29:04,409 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 03:29:04,410 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 03:29:04,410 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 03:29:04,413 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 03:29:04,413 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:29:04,413 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:29:04,416 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:29:04,416 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:29:04,417 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 [2018-10-27 03:29:04,444 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:29:04,444 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:29:04,446 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:29:04,446 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:29:04,446 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:29:04,446 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:29:04,446 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:29:04,447 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:29:04,447 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:29:04,447 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:29:04,447 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:29:04,447 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:29:04,448 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:29:04,448 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:29:04,449 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:29:04,449 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:29:04,449 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:29:04,449 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:29:04,449 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:29:04,450 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:29:04,450 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:29:04,450 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:29:04,450 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:29:04,450 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:29:04,451 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:29:04,452 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:29:04,452 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:29:04,453 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:29:04,453 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:29:04,453 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:29:04,453 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:29:04,453 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:29:04,454 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:29:04,454 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:29:04,519 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:29:04,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:29:04,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:29:04,544 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:29:04,545 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:29:04,546 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label03_true-unreach-call.c [2018-10-27 03:29:04,615 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e32b10d4d/87a692d1a3b84ec0826adc4bcb35573f/FLAG2c4ace9b2 [2018-10-27 03:29:05,334 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:29:05,335 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label03_true-unreach-call.c [2018-10-27 03:29:05,357 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e32b10d4d/87a692d1a3b84ec0826adc4bcb35573f/FLAG2c4ace9b2 [2018-10-27 03:29:05,372 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e32b10d4d/87a692d1a3b84ec0826adc4bcb35573f [2018-10-27 03:29:05,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:29:05,385 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:29:05,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:29:05,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:29:05,393 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:29:05,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:29:05" (1/1) ... [2018-10-27 03:29:05,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b792d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:05, skipping insertion in model container [2018-10-27 03:29:05,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:29:05" (1/1) ... [2018-10-27 03:29:05,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:29:05,513 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:29:06,491 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:29:06,495 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:29:06,900 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:29:06,924 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:29:06,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:06 WrapperNode [2018-10-27 03:29:06,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:29:06,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:29:06,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:29:06,927 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:29:06,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:06" (1/1) ... [2018-10-27 03:29:07,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:06" (1/1) ... [2018-10-27 03:29:07,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:29:07,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:29:07,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:29:07,465 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:29:07,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:06" (1/1) ... [2018-10-27 03:29:07,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:06" (1/1) ... [2018-10-27 03:29:07,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:06" (1/1) ... [2018-10-27 03:29:07,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:06" (1/1) ... [2018-10-27 03:29:07,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:06" (1/1) ... [2018-10-27 03:29:07,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:06" (1/1) ... [2018-10-27 03:29:07,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:06" (1/1) ... [2018-10-27 03:29:07,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:29:07,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:29:07,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:29:07,728 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:29:07,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:29:07,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:29:07,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:29:07,784 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:29:07,785 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:29:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:29:07,785 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:29:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:29:07,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:29:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:29:07,786 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:29:18,904 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:29:18,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:29:18 BoogieIcfgContainer [2018-10-27 03:29:18,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:29:18,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:29:18,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:29:18,910 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:29:18,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:29:05" (1/3) ... [2018-10-27 03:29:18,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4ab86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:29:18, skipping insertion in model container [2018-10-27 03:29:18,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:29:06" (2/3) ... [2018-10-27 03:29:18,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f4ab86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:29:18, skipping insertion in model container [2018-10-27 03:29:18,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:29:18" (3/3) ... [2018-10-27 03:29:18,914 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label03_true-unreach-call.c [2018-10-27 03:29:18,924 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:29:18,933 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:29:18,952 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:29:18,995 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:29:18,996 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:29:18,996 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:29:18,996 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:29:18,996 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:29:18,996 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:29:18,997 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:29:18,997 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:29:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 03:29:19,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-27 03:29:19,049 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:29:19,050 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:29:19,053 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:29:19,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:29:19,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1535738860, now seen corresponding path program 1 times [2018-10-27 03:29:19,061 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:29:19,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:29:19,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:29:19,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:29:19,106 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:29:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:29:19,690 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 03:29:19,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:29:19,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:29:19,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:29:19,714 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:29:19,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:29:19,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:29:19,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:29:19,740 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 03:29:31,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:29:31,727 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-10-27 03:29:31,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:29:31,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-10-27 03:29:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:29:31,766 INFO L225 Difference]: With dead ends: 2164 [2018-10-27 03:29:31,766 INFO L226 Difference]: Without dead ends: 1554 [2018-10-27 03:29:31,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:29:31,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-10-27 03:29:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-10-27 03:29:31,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-27 03:29:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-10-27 03:29:31,910 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 56 [2018-10-27 03:29:31,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:29:31,911 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-10-27 03:29:31,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:29:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-10-27 03:29:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-27 03:29:31,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:29:31,919 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:29:31,920 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:29:31,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:29:31,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1304567782, now seen corresponding path program 1 times [2018-10-27 03:29:31,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:29:31,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:29:31,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:29:31,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:29:31,922 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:29:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:29:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:29:32,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:29:32,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:29:32,199 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:29:32,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:29:32,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:29:32,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:29:32,202 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-10-27 03:29:43,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:29:43,376 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-10-27 03:29:43,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:29:43,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-10-27 03:29:43,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:29:43,395 INFO L225 Difference]: With dead ends: 3031 [2018-10-27 03:29:43,395 INFO L226 Difference]: Without dead ends: 1985 [2018-10-27 03:29:43,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:29:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-10-27 03:29:43,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-10-27 03:29:43,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-27 03:29:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-10-27 03:29:43,498 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 128 [2018-10-27 03:29:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:29:43,499 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-10-27 03:29:43,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:29:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-10-27 03:29:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-27 03:29:43,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:29:43,505 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:29:43,505 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:29:43,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:29:43,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1286141214, now seen corresponding path program 1 times [2018-10-27 03:29:43,506 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:29:43,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:29:43,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:29:43,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:29:43,508 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:29:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:29:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:29:43,897 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:29:43,897 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:29:43,898 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-10-27 03:29:43,900 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1058], [1060], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 03:29:43,977 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:29:43,977 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:29:45,312 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:30:04,300 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 03:30:04,301 INFO L272 AbstractInterpreter]: Visited 83 different actions 544 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 03:30:04,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:30:04,315 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 03:30:04,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:30:04,316 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 [2018-10-27 03:30:04,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:30:04,329 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 03:30:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:30:04,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 03:30:08,122 WARN L179 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 32 [2018-10-27 03:30:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:30:09,933 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 03:30:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:30:10,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 03:30:10,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-10-27 03:30:10,175 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:30:10,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 03:30:10,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 03:30:10,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-10-27 03:30:10,177 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 3 states. [2018-10-27 03:30:17,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:30:17,473 INFO L93 Difference]: Finished difference Result 5689 states and 9646 transitions. [2018-10-27 03:30:17,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 03:30:17,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2018-10-27 03:30:17,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:30:17,497 INFO L225 Difference]: With dead ends: 5689 [2018-10-27 03:30:17,498 INFO L226 Difference]: Without dead ends: 3736 [2018-10-27 03:30:17,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 258 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-10-27 03:30:17,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2018-10-27 03:30:17,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3733. [2018-10-27 03:30:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3733 states. [2018-10-27 03:30:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5526 transitions. [2018-10-27 03:30:17,626 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5526 transitions. Word has length 131 [2018-10-27 03:30:17,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:30:17,627 INFO L481 AbstractCegarLoop]: Abstraction has 3733 states and 5526 transitions. [2018-10-27 03:30:17,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 03:30:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5526 transitions. [2018-10-27 03:30:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-27 03:30:17,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:30:17,633 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:30:17,633 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:30:17,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:30:17,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1968123582, now seen corresponding path program 1 times [2018-10-27 03:30:17,634 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:30:17,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:30:17,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:30:17,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:30:17,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:30:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:30:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:30:17,897 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:30:17,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 03:30:17,897 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:30:17,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:30:17,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:30:17,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:30:17,899 INFO L87 Difference]: Start difference. First operand 3733 states and 5526 transitions. Second operand 7 states. [2018-10-27 03:30:33,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:30:33,277 INFO L93 Difference]: Finished difference Result 12809 states and 21216 transitions. [2018-10-27 03:30:33,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 03:30:33,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2018-10-27 03:30:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:30:33,351 INFO L225 Difference]: With dead ends: 12809 [2018-10-27 03:30:33,351 INFO L226 Difference]: Without dead ends: 9082 [2018-10-27 03:30:33,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 03:30:33,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9082 states. [2018-10-27 03:30:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9082 to 8957. [2018-10-27 03:30:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8957 states. [2018-10-27 03:30:33,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 13358 transitions. [2018-10-27 03:30:33,741 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 13358 transitions. Word has length 158 [2018-10-27 03:30:33,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:30:33,742 INFO L481 AbstractCegarLoop]: Abstraction has 8957 states and 13358 transitions. [2018-10-27 03:30:33,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:30:33,742 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 13358 transitions. [2018-10-27 03:30:33,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-27 03:30:33,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:30:33,753 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:30:33,753 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:30:33,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:30:33,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1891195745, now seen corresponding path program 1 times [2018-10-27 03:30:33,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:30:33,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:30:33,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:30:33,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:30:33,759 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:30:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:30:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:30:34,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:30:34,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:30:34,127 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:30:34,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:30:34,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:30:34,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:30:34,130 INFO L87 Difference]: Start difference. First operand 8957 states and 13358 transitions. Second operand 5 states. [2018-10-27 03:30:45,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:30:45,668 INFO L93 Difference]: Finished difference Result 29419 states and 47567 transitions. [2018-10-27 03:30:45,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:30:45,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-10-27 03:30:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:30:45,788 INFO L225 Difference]: With dead ends: 29419 [2018-10-27 03:30:45,789 INFO L226 Difference]: Without dead ends: 20468 [2018-10-27 03:30:45,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:30:45,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20468 states. [2018-10-27 03:30:46,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20468 to 20171. [2018-10-27 03:30:46,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20171 states. [2018-10-27 03:30:46,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20171 states to 20171 states and 27861 transitions. [2018-10-27 03:30:46,474 INFO L78 Accepts]: Start accepts. Automaton has 20171 states and 27861 transitions. Word has length 170 [2018-10-27 03:30:46,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:30:46,474 INFO L481 AbstractCegarLoop]: Abstraction has 20171 states and 27861 transitions. [2018-10-27 03:30:46,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:30:46,474 INFO L276 IsEmpty]: Start isEmpty. Operand 20171 states and 27861 transitions. [2018-10-27 03:30:46,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-27 03:30:46,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:30:46,495 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:30:46,495 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:30:46,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:30:46,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1388015723, now seen corresponding path program 1 times [2018-10-27 03:30:46,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:30:46,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:30:46,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:30:46,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:30:46,497 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:30:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:30:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 101 proven. 61 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 03:30:47,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:30:47,390 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:30:47,390 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-10-27 03:30:47,391 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1058], [1060], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 03:30:47,410 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:30:47,410 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:30:49,448 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:30:49,782 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:30:49,782 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 03:30:49,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:30:49,818 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:30:52,567 INFO L227 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 75.72% of their original sizes. [2018-10-27 03:30:52,568 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:30:53,188 INFO L415 sIntCurrentIteration]: We unified 237 AI predicates to 237 [2018-10-27 03:30:53,189 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:30:53,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:30:53,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2018-10-27 03:30:53,190 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:30:53,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 03:30:53,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 03:30:53,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:30:53,192 INFO L87 Difference]: Start difference. First operand 20171 states and 27861 transitions. Second operand 8 states. Received shutdown request... [2018-10-27 03:32:51,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:32:51,502 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:32:51,507 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:32:51,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:32:51 BoogieIcfgContainer [2018-10-27 03:32:51,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:32:51,509 INFO L168 Benchmark]: Toolchain (without parser) took 226125.20 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-27 03:32:51,510 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-27 03:32:51,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1540.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 03:32:51,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 537.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -940.0 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-27 03:32:51,513 INFO L168 Benchmark]: Boogie Preprocessor took 262.18 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2018-10-27 03:32:51,514 INFO L168 Benchmark]: RCFGBuilder took 11178.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 462.7 MB). Peak memory consumption was 462.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:32:51,515 INFO L168 Benchmark]: TraceAbstraction took 212601.28 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 521.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:32:51,520 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1540.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 537.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -940.0 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 262.18 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11178.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 462.7 MB). Peak memory consumption was 462.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212601.28 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 521.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 155). Cancelled while BasicCegarLoop was constructing difference of abstraction (20171states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (22370 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 212.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 176.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2334 SDtfs, 8516 SDslu, 1856 SDs, 0 SdLazy, 16874 SolverSat, 3841 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 143.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 544 GetRequests, 501 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20171occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 22.8s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9959104186952288 AbsIntWeakeningRatio, 0.11392405063291139 AbsIntAvgWeakeningVarsNumRemoved, 1050.1898734177216 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 953 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 1012 NumberOfCodeBlocks, 1012 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1135 ConstructedInterpolants, 52 QuantifiedInterpolants, 745089 SizeOfPredicates, 3 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 309/464 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown