java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:47:53,417 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:47:53,419 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:47:53,438 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:47:53,439 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:47:53,441 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:47:53,442 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:47:53,445 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:47:53,448 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:47:53,449 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:47:53,451 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:47:53,452 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:47:53,453 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:47:53,454 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:47:53,458 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:47:53,459 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:47:53,460 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:47:53,462 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:47:53,464 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:47:53,465 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:47:53,466 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:47:53,468 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:47:53,470 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:47:53,470 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:47:53,471 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:47:53,472 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:47:53,473 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:47:53,473 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:47:53,474 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:47:53,475 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:47:53,476 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:47:53,476 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:47:53,477 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:47:53,477 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:47:53,478 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:47:53,479 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:47:53,479 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:47:53,502 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:47:53,505 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:47:53,506 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:47:53,507 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:47:53,507 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:47:53,507 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:47:53,507 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:47:53,508 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:47:53,508 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:47:53,508 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:47:53,508 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:47:53,509 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:47:53,509 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:47:53,510 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:47:53,510 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:47:53,510 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:47:53,512 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:47:53,512 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:47:53,512 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:47:53,512 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:47:53,513 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:47:53,513 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:47:53,513 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:47:53,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:47:53,513 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:47:53,514 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:47:53,514 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:47:53,514 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:47:53,514 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:47:53,514 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:47:53,515 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:47:53,515 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:47:53,515 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:47:53,577 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:47:53,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:47:53,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:47:53,602 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:47:53,602 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:47:53,603 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label04_true-unreach-call.c [2018-07-24 12:47:53,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5ada55dd/78090f22857f4dd6b4209a1df6aaf26a/FLAGdd6dafd49 [2018-07-24 12:47:54,314 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:47:54,316 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label04_true-unreach-call.c [2018-07-24 12:47:54,342 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5ada55dd/78090f22857f4dd6b4209a1df6aaf26a/FLAGdd6dafd49 [2018-07-24 12:47:54,361 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5ada55dd/78090f22857f4dd6b4209a1df6aaf26a [2018-07-24 12:47:54,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:47:54,376 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:47:54,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:47:54,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:47:54,388 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:47:54,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:47:54" (1/1) ... [2018-07-24 12:47:54,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7930bb4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:54, skipping insertion in model container [2018-07-24 12:47:54,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:47:54" (1/1) ... [2018-07-24 12:47:54,707 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:47:55,238 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:47:55,254 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:47:55,541 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:47:55,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:55 WrapperNode [2018-07-24 12:47:55,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:47:55,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:47:55,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:47:55,637 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:47:55,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:55" (1/1) ... [2018-07-24 12:47:55,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:55" (1/1) ... [2018-07-24 12:47:55,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:47:55,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:47:55,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:47:55,818 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:47:56,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:55" (1/1) ... [2018-07-24 12:47:56,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:55" (1/1) ... [2018-07-24 12:47:56,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:55" (1/1) ... [2018-07-24 12:47:56,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:55" (1/1) ... [2018-07-24 12:47:56,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:55" (1/1) ... [2018-07-24 12:47:56,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:55" (1/1) ... [2018-07-24 12:47:56,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:55" (1/1) ... [2018-07-24 12:47:56,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:47:56,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:47:56,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:47:56,160 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:47:56,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:47:56,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:47:56,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:47:56,241 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 12:47:56,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 12:47:56,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:47:56,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:47:56,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:47:56,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:48:01,444 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:48:01,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:48:01 BoogieIcfgContainer [2018-07-24 12:48:01,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:48:01,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:48:01,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:48:01,450 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:48:01,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:47:54" (1/3) ... [2018-07-24 12:48:01,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e6e725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:48:01, skipping insertion in model container [2018-07-24 12:48:01,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:47:55" (2/3) ... [2018-07-24 12:48:01,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e6e725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:48:01, skipping insertion in model container [2018-07-24 12:48:01,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:48:01" (3/3) ... [2018-07-24 12:48:01,455 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label04_true-unreach-call.c [2018-07-24 12:48:01,465 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:48:01,477 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:48:01,534 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:48:01,535 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:48:01,535 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:48:01,535 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:48:01,535 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:48:01,535 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:48:01,535 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:48:01,536 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:48:01,536 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:48:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-07-24 12:48:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-24 12:48:01,588 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:01,590 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:01,590 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:48:01,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1740554548, now seen corresponding path program 1 times [2018-07-24 12:48:01,598 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:01,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:01,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:01,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:01,647 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:02,613 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:48:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:02,835 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:48:02,836 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:48:02,836 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:02,841 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:48:02,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:48:02,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:48:02,857 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-07-24 12:48:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:04,900 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-07-24 12:48:04,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:48:04,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2018-07-24 12:48:04,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:04,927 INFO L225 Difference]: With dead ends: 848 [2018-07-24 12:48:04,928 INFO L226 Difference]: Without dead ends: 534 [2018-07-24 12:48:04,938 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:48:04,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-07-24 12:48:05,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-07-24 12:48:05,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-07-24 12:48:05,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-07-24 12:48:05,042 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 205 [2018-07-24 12:48:05,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:05,044 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-07-24 12:48:05,044 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:48:05,044 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-07-24 12:48:05,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-24 12:48:05,060 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:05,060 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:05,061 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:48:05,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1550134832, now seen corresponding path program 1 times [2018-07-24 12:48:05,061 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:05,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:05,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:05,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:05,063 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:05,659 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:48:05,659 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:48:05,659 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:05,661 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:48:05,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:48:05,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:48:05,662 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-07-24 12:48:07,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:07,827 INFO L93 Difference]: Finished difference Result 1484 states and 2494 transitions. [2018-07-24 12:48:07,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:48:07,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2018-07-24 12:48:07,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:07,838 INFO L225 Difference]: With dead ends: 1484 [2018-07-24 12:48:07,839 INFO L226 Difference]: Without dead ends: 958 [2018-07-24 12:48:07,846 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:48:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2018-07-24 12:48:07,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 952. [2018-07-24 12:48:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-07-24 12:48:07,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1499 transitions. [2018-07-24 12:48:07,907 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1499 transitions. Word has length 218 [2018-07-24 12:48:07,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:07,908 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1499 transitions. [2018-07-24 12:48:07,908 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:48:07,908 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1499 transitions. [2018-07-24 12:48:07,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-24 12:48:07,914 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:07,915 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:07,915 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:48:07,917 INFO L82 PathProgramCache]: Analyzing trace with hash -477692503, now seen corresponding path program 1 times [2018-07-24 12:48:07,917 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:07,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:07,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:07,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:07,918 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:08,225 WARN L169 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:48:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:08,323 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:08,323 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 12:48:08,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:08,342 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:08,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:09,098 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:09,491 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:09,491 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:48:09,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:09,508 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:10,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:10,089 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:10,352 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:10,357 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:48:10,357 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 14 [2018-07-24 12:48:10,358 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:48:10,359 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 12:48:10,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 12:48:10,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:48:10,360 INFO L87 Difference]: Start difference. First operand 952 states and 1499 transitions. Second operand 8 states. [2018-07-24 12:48:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:17,406 INFO L93 Difference]: Finished difference Result 3678 states and 6274 transitions. [2018-07-24 12:48:17,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 12:48:17,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 229 [2018-07-24 12:48:17,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:17,434 INFO L225 Difference]: With dead ends: 3678 [2018-07-24 12:48:17,435 INFO L226 Difference]: Without dead ends: 2732 [2018-07-24 12:48:17,444 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 928 GetRequests, 909 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2018-07-24 12:48:17,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2018-07-24 12:48:17,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2664. [2018-07-24 12:48:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2018-07-24 12:48:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3877 transitions. [2018-07-24 12:48:17,586 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3877 transitions. Word has length 229 [2018-07-24 12:48:17,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:17,587 INFO L471 AbstractCegarLoop]: Abstraction has 2664 states and 3877 transitions. [2018-07-24 12:48:17,587 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 12:48:17,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3877 transitions. [2018-07-24 12:48:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-24 12:48:17,602 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:17,602 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:17,602 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:48:17,603 INFO L82 PathProgramCache]: Analyzing trace with hash -530119297, now seen corresponding path program 1 times [2018-07-24 12:48:17,603 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:17,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:17,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:17,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:17,604 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:17,945 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:48:17,946 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:48:17,946 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:17,946 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:48:17,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:48:17,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:48:17,947 INFO L87 Difference]: Start difference. First operand 2664 states and 3877 transitions. Second operand 3 states. [2018-07-24 12:48:21,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:21,105 INFO L93 Difference]: Finished difference Result 7865 states and 11859 transitions. [2018-07-24 12:48:21,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:48:21,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2018-07-24 12:48:21,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:21,143 INFO L225 Difference]: With dead ends: 7865 [2018-07-24 12:48:21,144 INFO L226 Difference]: Without dead ends: 5207 [2018-07-24 12:48:21,162 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:48:21,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2018-07-24 12:48:21,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 5190. [2018-07-24 12:48:21,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5190 states. [2018-07-24 12:48:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 7563 transitions. [2018-07-24 12:48:21,325 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 7563 transitions. Word has length 238 [2018-07-24 12:48:21,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:21,326 INFO L471 AbstractCegarLoop]: Abstraction has 5190 states and 7563 transitions. [2018-07-24 12:48:21,326 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:48:21,326 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 7563 transitions. [2018-07-24 12:48:21,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-24 12:48:21,353 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:21,353 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:21,353 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:48:21,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1055286339, now seen corresponding path program 1 times [2018-07-24 12:48:21,354 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:21,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:21,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:21,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:21,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:21,625 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:48:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:21,883 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:48:21,883 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:48:21,883 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:21,884 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:48:21,884 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:48:21,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:48:21,885 INFO L87 Difference]: Start difference. First operand 5190 states and 7563 transitions. Second operand 6 states. [2018-07-24 12:48:24,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:24,455 INFO L93 Difference]: Finished difference Result 16298 states and 25550 transitions. [2018-07-24 12:48:24,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:48:24,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 240 [2018-07-24 12:48:24,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:24,524 INFO L225 Difference]: With dead ends: 16298 [2018-07-24 12:48:24,524 INFO L226 Difference]: Without dead ends: 11114 [2018-07-24 12:48:24,576 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:48:24,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11114 states. [2018-07-24 12:48:24,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11114 to 10983. [2018-07-24 12:48:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10983 states. [2018-07-24 12:48:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10983 states to 10983 states and 15561 transitions. [2018-07-24 12:48:24,917 INFO L78 Accepts]: Start accepts. Automaton has 10983 states and 15561 transitions. Word has length 240 [2018-07-24 12:48:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:24,918 INFO L471 AbstractCegarLoop]: Abstraction has 10983 states and 15561 transitions. [2018-07-24 12:48:24,918 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:48:24,918 INFO L276 IsEmpty]: Start isEmpty. Operand 10983 states and 15561 transitions. [2018-07-24 12:48:24,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-07-24 12:48:24,958 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:24,959 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:24,959 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:48:24,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1936439626, now seen corresponding path program 1 times [2018-07-24 12:48:24,959 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:24,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:24,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:24,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:24,961 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:25,482 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:25,482 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:48:25,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:25,499 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:25,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 12:48:25,951 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 12:48:26,328 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:48:26,328 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-07-24 12:48:26,329 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:26,329 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:48:26,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:48:26,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:48:26,330 INFO L87 Difference]: Start difference. First operand 10983 states and 15561 transitions. Second operand 3 states. [2018-07-24 12:48:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:28,200 INFO L93 Difference]: Finished difference Result 21725 states and 30689 transitions. [2018-07-24 12:48:28,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:48:28,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 243 [2018-07-24 12:48:28,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:28,247 INFO L225 Difference]: With dead ends: 21725 [2018-07-24 12:48:28,247 INFO L226 Difference]: Without dead ends: 10748 [2018-07-24 12:48:28,283 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:48:28,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10748 states. [2018-07-24 12:48:28,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10748 to 10734. [2018-07-24 12:48:28,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10734 states. [2018-07-24 12:48:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10734 states to 10734 states and 14311 transitions. [2018-07-24 12:48:28,548 INFO L78 Accepts]: Start accepts. Automaton has 10734 states and 14311 transitions. Word has length 243 [2018-07-24 12:48:28,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:28,549 INFO L471 AbstractCegarLoop]: Abstraction has 10734 states and 14311 transitions. [2018-07-24 12:48:28,549 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:48:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 10734 states and 14311 transitions. [2018-07-24 12:48:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-24 12:48:28,605 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:28,606 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:28,606 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:48:28,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1233071546, now seen corresponding path program 1 times [2018-07-24 12:48:28,606 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:28,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:28,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:28,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:28,608 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 130 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:48:29,152 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:29,152 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:48:29,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:29,166 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:29,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-07-24 12:48:30,015 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:30,260 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-07-24 12:48:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 114 proven. 16 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-07-24 12:48:30,770 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:48:30,771 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 12:48:30,771 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:30,773 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:48:30,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:48:30,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:48:30,774 INFO L87 Difference]: Start difference. First operand 10734 states and 14311 transitions. Second operand 5 states. [2018-07-24 12:48:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:34,379 INFO L93 Difference]: Finished difference Result 30848 states and 43667 transitions. [2018-07-24 12:48:34,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:48:34,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2018-07-24 12:48:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:34,479 INFO L225 Difference]: With dead ends: 30848 [2018-07-24 12:48:34,479 INFO L226 Difference]: Without dead ends: 20120 [2018-07-24 12:48:34,519 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:48:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20120 states. [2018-07-24 12:48:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20120 to 19861. [2018-07-24 12:48:35,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19861 states. [2018-07-24 12:48:35,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19861 states to 19861 states and 26275 transitions. [2018-07-24 12:48:35,221 INFO L78 Accepts]: Start accepts. Automaton has 19861 states and 26275 transitions. Word has length 330 [2018-07-24 12:48:35,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:35,221 INFO L471 AbstractCegarLoop]: Abstraction has 19861 states and 26275 transitions. [2018-07-24 12:48:35,222 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:48:35,222 INFO L276 IsEmpty]: Start isEmpty. Operand 19861 states and 26275 transitions. [2018-07-24 12:48:35,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-07-24 12:48:35,284 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:35,284 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:35,284 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:48:35,285 INFO L82 PathProgramCache]: Analyzing trace with hash -2134681585, now seen corresponding path program 1 times [2018-07-24 12:48:35,285 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:35,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:35,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:35,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:35,288 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 148 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-07-24 12:48:35,846 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:35,846 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:48:35,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:35,864 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:36,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:48:36,333 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 148 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-07-24 12:48:36,672 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:36,672 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:48:36,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:36,687 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:37,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 84 proven. 21 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:48:37,587 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 148 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:48:37,956 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:48:37,957 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 8] total 12 [2018-07-24 12:48:37,957 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:48:37,958 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:48:37,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:48:37,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:48:37,959 INFO L87 Difference]: Start difference. First operand 19861 states and 26275 transitions. Second operand 6 states. [2018-07-24 12:48:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:40,242 INFO L93 Difference]: Finished difference Result 38246 states and 50504 transitions. [2018-07-24 12:48:40,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 12:48:40,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 339 [2018-07-24 12:48:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:40,292 INFO L225 Difference]: With dead ends: 38246 [2018-07-24 12:48:40,293 INFO L226 Difference]: Without dead ends: 18391 [2018-07-24 12:48:40,326 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1362 GetRequests, 1344 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:48:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18391 states. [2018-07-24 12:48:40,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18391 to 18391. [2018-07-24 12:48:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18391 states. [2018-07-24 12:48:40,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18391 states to 18391 states and 23505 transitions. [2018-07-24 12:48:40,671 INFO L78 Accepts]: Start accepts. Automaton has 18391 states and 23505 transitions. Word has length 339 [2018-07-24 12:48:40,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:40,672 INFO L471 AbstractCegarLoop]: Abstraction has 18391 states and 23505 transitions. [2018-07-24 12:48:40,672 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:48:40,672 INFO L276 IsEmpty]: Start isEmpty. Operand 18391 states and 23505 transitions. [2018-07-24 12:48:40,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-24 12:48:40,716 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:40,716 INFO L353 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:40,716 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:48:40,717 INFO L82 PathProgramCache]: Analyzing trace with hash -770166786, now seen corresponding path program 1 times [2018-07-24 12:48:40,717 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:40,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:40,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:40,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:40,718 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 157 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:48:41,119 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:41,119 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:48:41,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:41,127 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:41,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:41,656 WARN L169 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-07-24 12:48:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:48:41,727 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 157 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:48:42,253 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:48:42,253 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-07-24 12:48:42,254 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:42,254 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:48:42,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:48:42,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:48:42,255 INFO L87 Difference]: Start difference. First operand 18391 states and 23505 transitions. Second operand 6 states. [2018-07-24 12:48:44,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:44,907 INFO L93 Difference]: Finished difference Result 37229 states and 49548 transitions. [2018-07-24 12:48:44,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 12:48:44,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 370 [2018-07-24 12:48:44,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:45,219 INFO L225 Difference]: With dead ends: 37229 [2018-07-24 12:48:45,220 INFO L226 Difference]: Without dead ends: 18842 [2018-07-24 12:48:45,259 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 732 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2018-07-24 12:48:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18842 states. [2018-07-24 12:48:45,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18842 to 18419. [2018-07-24 12:48:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18419 states. [2018-07-24 12:48:45,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18419 states to 18419 states and 23460 transitions. [2018-07-24 12:48:45,703 INFO L78 Accepts]: Start accepts. Automaton has 18419 states and 23460 transitions. Word has length 370 [2018-07-24 12:48:45,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:45,704 INFO L471 AbstractCegarLoop]: Abstraction has 18419 states and 23460 transitions. [2018-07-24 12:48:45,704 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:48:45,704 INFO L276 IsEmpty]: Start isEmpty. Operand 18419 states and 23460 transitions. [2018-07-24 12:48:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-24 12:48:45,743 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:45,744 INFO L353 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:45,744 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:48:45,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1846698863, now seen corresponding path program 1 times [2018-07-24 12:48:45,744 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:45,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:45,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:45,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:45,746 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 161 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:48:46,417 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:46,417 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:48:46,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:46,427 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:46,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:48:46,813 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 161 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:48:47,429 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:48:47,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:48:47,430 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:47,430 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:48:47,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:48:47,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:48:47,431 INFO L87 Difference]: Start difference. First operand 18419 states and 23460 transitions. Second operand 5 states. [2018-07-24 12:48:49,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:49,743 INFO L93 Difference]: Finished difference Result 37201 states and 47951 transitions. [2018-07-24 12:48:49,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:48:49,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 372 [2018-07-24 12:48:49,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:49,804 INFO L225 Difference]: With dead ends: 37201 [2018-07-24 12:48:49,805 INFO L226 Difference]: Without dead ends: 18788 [2018-07-24 12:48:49,845 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 739 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:48:49,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18788 states. [2018-07-24 12:48:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18788 to 18651. [2018-07-24 12:48:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18651 states. [2018-07-24 12:48:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18651 states to 18651 states and 23410 transitions. [2018-07-24 12:48:50,545 INFO L78 Accepts]: Start accepts. Automaton has 18651 states and 23410 transitions. Word has length 372 [2018-07-24 12:48:50,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:50,546 INFO L471 AbstractCegarLoop]: Abstraction has 18651 states and 23410 transitions. [2018-07-24 12:48:50,546 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:48:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 18651 states and 23410 transitions. [2018-07-24 12:48:50,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-07-24 12:48:50,588 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:50,588 INFO L353 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:50,588 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:48:50,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1991145764, now seen corresponding path program 1 times [2018-07-24 12:48:50,589 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:50,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:50,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:50,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:50,590 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:51,358 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:51,358 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:48:51,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:51,367 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:51,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:48:51,878 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:52,244 WARN L169 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2018-07-24 12:48:53,060 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 180 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:48:53,081 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:48:53,082 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:48:53,082 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:48:53,083 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:48:53,083 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:48:53,083 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:48:53,083 INFO L87 Difference]: Start difference. First operand 18651 states and 23410 transitions. Second operand 5 states. [2018-07-24 12:48:55,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:48:55,693 INFO L93 Difference]: Finished difference Result 41839 states and 53804 transitions. [2018-07-24 12:48:55,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:48:55,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2018-07-24 12:48:55,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:48:55,758 INFO L225 Difference]: With dead ends: 41839 [2018-07-24 12:48:55,758 INFO L226 Difference]: Without dead ends: 23194 [2018-07-24 12:48:55,793 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:48:55,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23194 states. [2018-07-24 12:48:56,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23194 to 22960. [2018-07-24 12:48:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22960 states. [2018-07-24 12:48:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22960 states to 22960 states and 28457 transitions. [2018-07-24 12:48:56,279 INFO L78 Accepts]: Start accepts. Automaton has 22960 states and 28457 transitions. Word has length 391 [2018-07-24 12:48:56,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:48:56,279 INFO L471 AbstractCegarLoop]: Abstraction has 22960 states and 28457 transitions. [2018-07-24 12:48:56,279 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:48:56,279 INFO L276 IsEmpty]: Start isEmpty. Operand 22960 states and 28457 transitions. [2018-07-24 12:48:56,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-07-24 12:48:56,596 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:48:56,597 INFO L353 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:48:56,597 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:48:56,597 INFO L82 PathProgramCache]: Analyzing trace with hash 61775672, now seen corresponding path program 1 times [2018-07-24 12:48:56,597 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:48:56,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:56,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:56,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:48:56,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:48:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:57,100 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:57,100 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:48:57,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:57,110 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:57,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:57,493 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:57,728 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:48:57,728 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:48:57,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:48:57,743 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:48:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:48:58,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:48:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:58,603 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:48:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:48:58,882 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:48:58,882 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 6] total 15 [2018-07-24 12:48:58,882 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:48:58,883 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:48:58,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:48:58,884 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:48:58,884 INFO L87 Difference]: Start difference. First operand 22960 states and 28457 transitions. Second operand 6 states. [2018-07-24 12:49:02,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:49:02,342 INFO L93 Difference]: Finished difference Result 55991 states and 71967 transitions. [2018-07-24 12:49:02,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:49:02,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 393 [2018-07-24 12:49:02,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:49:02,429 INFO L225 Difference]: With dead ends: 55991 [2018-07-24 12:49:02,429 INFO L226 Difference]: Without dead ends: 33037 [2018-07-24 12:49:02,464 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1566 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:49:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33037 states. [2018-07-24 12:49:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33037 to 32496. [2018-07-24 12:49:03,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32496 states. [2018-07-24 12:49:03,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32496 states to 32496 states and 39133 transitions. [2018-07-24 12:49:03,099 INFO L78 Accepts]: Start accepts. Automaton has 32496 states and 39133 transitions. Word has length 393 [2018-07-24 12:49:03,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:49:03,099 INFO L471 AbstractCegarLoop]: Abstraction has 32496 states and 39133 transitions. [2018-07-24 12:49:03,100 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:49:03,100 INFO L276 IsEmpty]: Start isEmpty. Operand 32496 states and 39133 transitions. [2018-07-24 12:49:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-07-24 12:49:03,149 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:49:03,150 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:49:03,150 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:49:03,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1077986439, now seen corresponding path program 1 times [2018-07-24 12:49:03,150 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:49:03,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:03,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:03,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:03,151 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:49:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:03,512 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:49:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 195 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:49:03,817 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:03,817 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:49:03,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:03,824 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:04,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:49:04,485 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:04,843 WARN L169 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2018-07-24 12:49:05,338 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 195 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:49:05,360 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:05,360 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:49:05,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:05,376 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:06,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 276 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:49:06,691 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 214 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:49:07,573 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:49:07,574 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8, 11, 8] total 35 [2018-07-24 12:49:07,574 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:49:07,575 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 12:49:07,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 12:49:07,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1072, Unknown=0, NotChecked=0, Total=1190 [2018-07-24 12:49:07,576 INFO L87 Difference]: Start difference. First operand 32496 states and 39133 transitions. Second operand 16 states. [2018-07-24 12:49:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:49:17,003 INFO L93 Difference]: Finished difference Result 78335 states and 100287 transitions. [2018-07-24 12:49:17,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-24 12:49:17,004 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 403 [2018-07-24 12:49:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:49:17,206 INFO L225 Difference]: With dead ends: 78335 [2018-07-24 12:49:17,206 INFO L226 Difference]: Without dead ends: 45870 [2018-07-24 12:49:17,283 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1694 GetRequests, 1618 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1038, Invalid=4662, Unknown=0, NotChecked=0, Total=5700 [2018-07-24 12:49:17,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45870 states. [2018-07-24 12:49:18,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45870 to 43534. [2018-07-24 12:49:18,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43534 states. [2018-07-24 12:49:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43534 states to 43534 states and 53130 transitions. [2018-07-24 12:49:18,744 INFO L78 Accepts]: Start accepts. Automaton has 43534 states and 53130 transitions. Word has length 403 [2018-07-24 12:49:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:49:18,745 INFO L471 AbstractCegarLoop]: Abstraction has 43534 states and 53130 transitions. [2018-07-24 12:49:18,745 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 12:49:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 43534 states and 53130 transitions. [2018-07-24 12:49:18,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-07-24 12:49:18,842 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:49:18,843 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:49:18,843 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:49:18,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1932235547, now seen corresponding path program 1 times [2018-07-24 12:49:18,844 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:49:18,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:18,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:18,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:18,845 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:49:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 200 proven. 8 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:49:19,322 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:19,322 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:49:19,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:19,331 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:19,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:49:19,819 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 200 proven. 8 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:49:20,168 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:20,168 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:49:20,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:20,186 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:20,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 197 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:49:21,217 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 285 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:49:21,745 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:49:21,745 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 11, 8] total 24 [2018-07-24 12:49:21,746 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:49:21,747 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 12:49:21,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 12:49:21,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:49:21,748 INFO L87 Difference]: Start difference. First operand 43534 states and 53130 transitions. Second operand 8 states. [2018-07-24 12:49:30,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:49:30,527 INFO L93 Difference]: Finished difference Result 96411 states and 125858 transitions. [2018-07-24 12:49:30,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-24 12:49:30,528 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 404 [2018-07-24 12:49:30,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:49:30,744 INFO L225 Difference]: With dead ends: 96411 [2018-07-24 12:49:30,744 INFO L226 Difference]: Without dead ends: 52883 [2018-07-24 12:49:30,844 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1681 GetRequests, 1627 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=344, Invalid=2626, Unknown=0, NotChecked=0, Total=2970 [2018-07-24 12:49:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52883 states. [2018-07-24 12:49:32,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52883 to 50767. [2018-07-24 12:49:32,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50767 states. [2018-07-24 12:49:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50767 states to 50767 states and 60571 transitions. [2018-07-24 12:49:32,185 INFO L78 Accepts]: Start accepts. Automaton has 50767 states and 60571 transitions. Word has length 404 [2018-07-24 12:49:32,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:49:32,185 INFO L471 AbstractCegarLoop]: Abstraction has 50767 states and 60571 transitions. [2018-07-24 12:49:32,186 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 12:49:32,186 INFO L276 IsEmpty]: Start isEmpty. Operand 50767 states and 60571 transitions. [2018-07-24 12:49:32,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-07-24 12:49:32,298 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:49:32,298 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:49:32,299 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:49:32,299 INFO L82 PathProgramCache]: Analyzing trace with hash -2041482561, now seen corresponding path program 1 times [2018-07-24 12:49:32,299 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:49:32,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:32,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:32,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:32,300 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:49:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:32,807 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-07-24 12:49:33,143 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 12:49:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 222 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:49:34,128 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:34,128 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:49:34,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:34,145 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:34,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-07-24 12:49:35,328 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 224 proven. 89 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-07-24 12:49:36,332 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:49:36,332 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5] total 15 [2018-07-24 12:49:36,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:49:36,333 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:49:36,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:49:36,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:49:36,333 INFO L87 Difference]: Start difference. First operand 50767 states and 60571 transitions. Second operand 5 states. [2018-07-24 12:49:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:49:38,162 INFO L93 Difference]: Finished difference Result 125252 states and 154634 transitions. [2018-07-24 12:49:38,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:49:38,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 432 [2018-07-24 12:49:38,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:49:38,501 INFO L225 Difference]: With dead ends: 125252 [2018-07-24 12:49:38,501 INFO L226 Difference]: Without dead ends: 80653 [2018-07-24 12:49:38,629 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 856 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-07-24 12:49:38,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80653 states. [2018-07-24 12:49:40,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80653 to 79315. [2018-07-24 12:49:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79315 states. [2018-07-24 12:49:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79315 states to 79315 states and 94908 transitions. [2018-07-24 12:49:40,655 INFO L78 Accepts]: Start accepts. Automaton has 79315 states and 94908 transitions. Word has length 432 [2018-07-24 12:49:40,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:49:40,655 INFO L471 AbstractCegarLoop]: Abstraction has 79315 states and 94908 transitions. [2018-07-24 12:49:40,656 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:49:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 79315 states and 94908 transitions. [2018-07-24 12:49:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-07-24 12:49:40,782 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:49:40,783 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:49:40,783 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:49:40,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1771213995, now seen corresponding path program 1 times [2018-07-24 12:49:40,784 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:49:40,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:40,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:40,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:49:40,785 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:49:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:41,607 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 12:49:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 264 proven. 86 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-07-24 12:49:41,951 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:41,951 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:49:41,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:41,963 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:42,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 12:49:42,959 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 12:49:43,241 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:49:43,242 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:49:43,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:49:43,257 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:49:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:49:44,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:49:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 326 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:49:44,192 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:49:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 12:49:44,371 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:49:44,371 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 12 [2018-07-24 12:49:44,371 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:49:44,373 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:49:44,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:49:44,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:49:44,374 INFO L87 Difference]: Start difference. First operand 79315 states and 94908 transitions. Second operand 9 states. [2018-07-24 12:50:04,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:50:04,292 INFO L93 Difference]: Finished difference Result 306092 states and 437969 transitions. [2018-07-24 12:50:04,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-24 12:50:04,292 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 455 [2018-07-24 12:50:04,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:50:05,247 INFO L225 Difference]: With dead ends: 306092 [2018-07-24 12:50:05,247 INFO L226 Difference]: Without dead ends: 207604 [2018-07-24 12:50:05,622 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1886 GetRequests, 1843 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=373, Invalid=1519, Unknown=0, NotChecked=0, Total=1892 [2018-07-24 12:50:05,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207604 states. [2018-07-24 12:50:11,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207604 to 192156. [2018-07-24 12:50:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192156 states. [2018-07-24 12:50:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192156 states to 192156 states and 224635 transitions. [2018-07-24 12:50:13,245 INFO L78 Accepts]: Start accepts. Automaton has 192156 states and 224635 transitions. Word has length 455 [2018-07-24 12:50:13,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:50:13,245 INFO L471 AbstractCegarLoop]: Abstraction has 192156 states and 224635 transitions. [2018-07-24 12:50:13,245 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:50:13,245 INFO L276 IsEmpty]: Start isEmpty. Operand 192156 states and 224635 transitions. [2018-07-24 12:50:13,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-07-24 12:50:13,476 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:50:13,476 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:50:13,476 INFO L414 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:50:13,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1196051666, now seen corresponding path program 1 times [2018-07-24 12:50:13,477 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:50:13,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:50:13,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:50:13,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:50:13,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:50:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:50:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 270 proven. 8 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-07-24 12:50:14,211 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:50:14,211 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:50:14,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:50:14,223 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:50:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:50:14,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:50:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 288 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 12:50:14,809 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:50:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 268 proven. 101 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 12:50:15,255 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:50:15,256 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:50:15,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:50:15,271 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:50:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:50:16,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:50:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 343 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:50:16,564 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:50:16,728 WARN L169 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 12:50:16,893 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 12:50:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 362 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-07-24 12:50:18,210 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:50:18,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8, 11, 8] total 30 [2018-07-24 12:50:18,211 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:50:18,214 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 12:50:18,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 12:50:18,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2018-07-24 12:50:18,215 INFO L87 Difference]: Start difference. First operand 192156 states and 224635 transitions. Second operand 11 states. [2018-07-24 12:50:36,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:50:36,537 INFO L93 Difference]: Finished difference Result 377142 states and 461837 transitions. [2018-07-24 12:50:36,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-24 12:50:36,538 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 460 [2018-07-24 12:50:36,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:50:37,467 INFO L225 Difference]: With dead ends: 377142 [2018-07-24 12:50:37,468 INFO L226 Difference]: Without dead ends: 188948 [2018-07-24 12:50:37,773 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1933 GetRequests, 1858 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=793, Invalid=5059, Unknown=0, NotChecked=0, Total=5852 [2018-07-24 12:50:37,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188948 states. [2018-07-24 12:50:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188948 to 178589. [2018-07-24 12:50:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178589 states. [2018-07-24 12:50:47,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178589 states to 178589 states and 203468 transitions. [2018-07-24 12:50:47,980 INFO L78 Accepts]: Start accepts. Automaton has 178589 states and 203468 transitions. Word has length 460 [2018-07-24 12:50:47,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:50:47,980 INFO L471 AbstractCegarLoop]: Abstraction has 178589 states and 203468 transitions. [2018-07-24 12:50:47,980 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 12:50:47,980 INFO L276 IsEmpty]: Start isEmpty. Operand 178589 states and 203468 transitions. [2018-07-24 12:50:48,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-07-24 12:50:48,135 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:50:48,135 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:50:48,135 INFO L414 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:50:48,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1882917872, now seen corresponding path program 1 times [2018-07-24 12:50:48,136 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:50:48,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:50:48,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:50:48,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:50:48,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:50:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:50:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 330 proven. 85 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 12:50:48,573 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:50:48,574 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:50:48,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:50:48,582 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:50:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:50:48,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:50:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 412 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 12:50:49,074 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:50:49,245 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-07-24 12:50:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 339 proven. 87 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 12:50:49,457 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:50:49,457 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:50:49,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:50:49,474 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:50:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:50:50,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:50:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 412 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 12:50:50,491 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:50:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 339 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 12:50:51,262 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:50:51,262 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6, 5, 5] total 18 [2018-07-24 12:50:51,262 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:50:51,263 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:50:51,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:50:51,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:50:51,264 INFO L87 Difference]: Start difference. First operand 178589 states and 203468 transitions. Second operand 9 states. [2018-07-24 12:51:14,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:51:14,587 INFO L93 Difference]: Finished difference Result 618849 states and 751135 transitions. [2018-07-24 12:51:14,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-24 12:51:14,588 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 462 [2018-07-24 12:51:14,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:51:17,147 INFO L225 Difference]: With dead ends: 618849 [2018-07-24 12:51:17,148 INFO L226 Difference]: Without dead ends: 381219 [2018-07-24 12:51:17,749 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1906 GetRequests, 1861 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=377, Invalid=1603, Unknown=0, NotChecked=0, Total=1980 [2018-07-24 12:51:17,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381219 states. [2018-07-24 12:51:25,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381219 to 339180. [2018-07-24 12:51:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339180 states. [2018-07-24 12:51:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339180 states to 339180 states and 369118 transitions. [2018-07-24 12:51:25,894 INFO L78 Accepts]: Start accepts. Automaton has 339180 states and 369118 transitions. Word has length 462 [2018-07-24 12:51:25,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:51:25,895 INFO L471 AbstractCegarLoop]: Abstraction has 339180 states and 369118 transitions. [2018-07-24 12:51:25,895 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:51:25,895 INFO L276 IsEmpty]: Start isEmpty. Operand 339180 states and 369118 transitions. [2018-07-24 12:51:26,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-07-24 12:51:26,060 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:51:26,060 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:51:26,060 INFO L414 AbstractCegarLoop]: === Iteration 19 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:51:26,061 INFO L82 PathProgramCache]: Analyzing trace with hash -655432280, now seen corresponding path program 1 times [2018-07-24 12:51:26,061 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:51:26,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:51:26,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:51:26,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:51:26,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:51:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:51:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 462 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-07-24 12:51:26,860 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:51:26,860 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:51:26,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:51:26,868 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:51:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:51:28,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-07-24 12:51:28,297 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 12:51:28,498 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:51:28,499 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:51:28,505 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:51:28,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:51:28 BoogieIcfgContainer [2018-07-24 12:51:28,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:51:28,506 INFO L168 Benchmark]: Toolchain (without parser) took 214132.60 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-07-24 12:51:28,508 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-07-24 12:51:28,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1258.91 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:51:28,509 INFO L168 Benchmark]: Boogie Procedure Inliner took 181.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:51:28,509 INFO L168 Benchmark]: Boogie Preprocessor took 341.58 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 818.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -954.3 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2018-07-24 12:51:28,510 INFO L168 Benchmark]: RCFGBuilder took 5285.22 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 283.0 MB). Peak memory consumption was 283.0 MB. Max. memory is 7.1 GB. [2018-07-24 12:51:28,511 INFO L168 Benchmark]: TraceAbstraction took 207059.64 ms. Allocated memory was 2.4 GB in the beginning and 5.1 GB in the end (delta: 2.7 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -673.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-07-24 12:51:28,515 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1258.91 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 181.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 341.58 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 818.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -954.3 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5285.22 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 283.0 MB). Peak memory consumption was 283.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207059.64 ms. Allocated memory was 2.4 GB in the beginning and 5.1 GB in the end (delta: 2.7 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -673.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1629]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1629). Cancelled while BasicCegarLoop was analyzing trace of length 491 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 206.9s OverallTime, 19 OverallIterations, 5 TraceHistogramMax, 125.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4183 SDtfs, 26037 SDslu, 5568 SDs, 0 SdLazy, 48692 SolverSat, 7817 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17324 GetRequests, 16884 SyntacticMatches, 29 SemanticMatches, 411 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4898 ImplicationChecksByTransitivity, 18.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=339180occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 35.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 75468 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.8s SsaConstructionTime, 9.9s SatisfiabilityAnalysisTime, 27.8s InterpolantComputationTime, 14612 NumberOfCodeBlocks, 14612 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 22978 ConstructedInterpolants, 0 QuantifiedInterpolants, 23496645 SizeOfPredicates, 83 NumberOfNonLiveVariables, 29274 ConjunctsInSsa, 278 ConjunctsInUnsatCore, 62 InterpolantComputations, 11 PerfectInterpolantSequences, 13841/15564 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-51-28-529.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-51-28-529.csv Completed graceful shutdown