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/Problem18_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:57:53,550 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:57:53,552 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:57:53,564 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:57:53,564 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:57:53,565 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:57:53,566 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:57:53,568 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:57:53,570 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:57:53,571 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:57:53,572 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:57:53,572 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:57:53,573 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:57:53,574 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:57:53,576 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:57:53,576 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:57:53,577 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:57:53,579 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:57:53,581 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:57:53,583 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:57:53,584 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:57:53,586 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:57:53,588 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:57:53,589 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:57:53,589 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:57:53,590 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:57:53,591 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:57:53,592 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:57:53,593 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:57:53,594 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:57:53,594 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:57:53,595 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:57:53,595 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:57:53,596 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:57:53,597 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:57:53,597 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:57:53,598 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 14:57:53,613 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:57:53,614 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:57:53,614 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:57:53,615 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:57:53,615 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:57:53,615 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:57:53,615 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:57:53,616 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:57:53,616 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:57:53,616 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:57:53,616 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:57:53,617 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:57:53,617 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:57:53,617 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:57:53,617 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:57:53,618 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:57:53,618 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:57:53,618 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:57:53,618 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:57:53,618 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:57:53,619 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:57:53,619 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:57:53,619 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:57:53,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:57:53,619 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:57:53,620 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:57:53,620 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:57:53,620 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:57:53,620 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:57:53,620 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:57:53,621 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:57:53,621 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:57:53,621 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:57:53,675 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:57:53,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:57:53,702 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:57:53,705 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:57:53,705 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:57:53,706 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label11_true-unreach-call.c [2018-07-24 14:57:54,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ccafa44/897bfbc5e64c40aba8a09579f031adcb/FLAG09ed81680 [2018-07-24 14:57:54,452 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:57:54,453 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label11_true-unreach-call.c [2018-07-24 14:57:54,484 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ccafa44/897bfbc5e64c40aba8a09579f031adcb/FLAG09ed81680 [2018-07-24 14:57:54,500 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50ccafa44/897bfbc5e64c40aba8a09579f031adcb [2018-07-24 14:57:54,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:57:54,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:57:54,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:57:54,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:57:54,528 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:57:54,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:57:54" (1/1) ... [2018-07-24 14:57:54,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e286a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:54, skipping insertion in model container [2018-07-24 14:57:54,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:57:54" (1/1) ... [2018-07-24 14:57:54,882 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:57:55,785 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:57:55,805 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:57:56,284 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:57:56,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:56 WrapperNode [2018-07-24 14:57:56,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:57:56,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:57:56,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:57:56,447 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:57:56,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:56" (1/1) ... [2018-07-24 14:57:56,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:56" (1/1) ... [2018-07-24 14:57:56,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:57:56,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:57:56,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:57:56,667 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:57:57,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:56" (1/1) ... [2018-07-24 14:57:57,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:56" (1/1) ... [2018-07-24 14:57:57,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:56" (1/1) ... [2018-07-24 14:57:57,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:56" (1/1) ... [2018-07-24 14:57:57,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:56" (1/1) ... [2018-07-24 14:57:57,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:56" (1/1) ... [2018-07-24 14:57:57,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:56" (1/1) ... [2018-07-24 14:57:57,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:57:57,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:57:57,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:57:57,308 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:57:57,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:56" (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 14:57:57,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:57:57,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:57:57,380 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 14:57:57,380 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 14:57:57,380 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_output3 [2018-07-24 14:57:57,381 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_output3 [2018-07-24 14:57:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:57:57,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:57:57,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:57:57,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:57:57,382 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_output2 [2018-07-24 14:57:57,382 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_output2 [2018-07-24 14:58:05,331 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:58:05,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:58:05 BoogieIcfgContainer [2018-07-24 14:58:05,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:58:05,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:58:05,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:58:05,340 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:58:05,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:57:54" (1/3) ... [2018-07-24 14:58:05,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6d314d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:58:05, skipping insertion in model container [2018-07-24 14:58:05,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:56" (2/3) ... [2018-07-24 14:58:05,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6d314d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:58:05, skipping insertion in model container [2018-07-24 14:58:05,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:58:05" (3/3) ... [2018-07-24 14:58:05,344 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label11_true-unreach-call.c [2018-07-24 14:58:05,354 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:58:05,363 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:58:05,425 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:58:05,426 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:58:05,426 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:58:05,426 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:58:05,426 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:58:05,427 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:58:05,427 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:58:05,427 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:58:05,427 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:58:05,463 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 14:58:05,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-07-24 14:58:05,473 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:58:05,474 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] [2018-07-24 14:58:05,475 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 14:58:05,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1811651769, now seen corresponding path program 1 times [2018-07-24 14:58:05,484 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:58:05,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:05,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:05,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:05,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:58:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:05,970 WARN L169 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:58:06,002 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 14:58:06,005 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:58:06,005 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:58:06,005 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:58:06,011 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:58:06,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:58:06,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:58:06,030 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-24 14:58:12,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:58:12,544 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-24 14:58:12,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:58:12,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-07-24 14:58:12,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:58:12,584 INFO L225 Difference]: With dead ends: 2251 [2018-07-24 14:58:12,584 INFO L226 Difference]: Without dead ends: 1474 [2018-07-24 14:58:12,595 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:58:12,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-24 14:58:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-24 14:58:12,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-24 14:58:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-07-24 14:58:12,764 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 49 [2018-07-24 14:58:12,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:58:12,765 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-07-24 14:58:12,765 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:58:12,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-07-24 14:58:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-24 14:58:12,780 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:58:12,781 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, 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] [2018-07-24 14:58:12,782 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 14:58:12,782 INFO L82 PathProgramCache]: Analyzing trace with hash -217890190, now seen corresponding path program 1 times [2018-07-24 14:58:12,782 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:58:12,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:12,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:12,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:12,785 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:58:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:58:13,068 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:58:13,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:58:13,068 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:58:13,070 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:58:13,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:58:13,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:58:13,071 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-07-24 14:58:22,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:58:22,461 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-07-24 14:58:22,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:58:22,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-07-24 14:58:22,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:58:22,482 INFO L225 Difference]: With dead ends: 4422 [2018-07-24 14:58:22,482 INFO L226 Difference]: Without dead ends: 2954 [2018-07-24 14:58:22,488 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:58:22,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-07-24 14:58:22,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-07-24 14:58:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-07-24 14:58:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5031 transitions. [2018-07-24 14:58:22,583 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5031 transitions. Word has length 123 [2018-07-24 14:58:22,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:58:22,584 INFO L471 AbstractCegarLoop]: Abstraction has 2928 states and 5031 transitions. [2018-07-24 14:58:22,584 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:58:22,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5031 transitions. [2018-07-24 14:58:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-24 14:58:22,592 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:58:22,592 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, 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] [2018-07-24 14:58:22,592 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 14:58:22,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1071961809, now seen corresponding path program 1 times [2018-07-24 14:58:22,593 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:58:22,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:22,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:22,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:22,595 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:58:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:58:22,917 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:58:22,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:58:22,918 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:58:22,918 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:58:22,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:58:22,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:58:22,919 INFO L87 Difference]: Start difference. First operand 2928 states and 5031 transitions. Second operand 6 states. [2018-07-24 14:58:37,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:58:37,328 INFO L93 Difference]: Finished difference Result 11827 states and 21334 transitions. [2018-07-24 14:58:37,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:58:37,329 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-07-24 14:58:37,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:58:37,381 INFO L225 Difference]: With dead ends: 11827 [2018-07-24 14:58:37,381 INFO L226 Difference]: Without dead ends: 8905 [2018-07-24 14:58:37,408 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:58:37,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8905 states. [2018-07-24 14:58:37,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8905 to 8827. [2018-07-24 14:58:37,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8827 states. [2018-07-24 14:58:37,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8827 states to 8827 states and 13810 transitions. [2018-07-24 14:58:37,695 INFO L78 Accepts]: Start accepts. Automaton has 8827 states and 13810 transitions. Word has length 126 [2018-07-24 14:58:37,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:58:37,696 INFO L471 AbstractCegarLoop]: Abstraction has 8827 states and 13810 transitions. [2018-07-24 14:58:37,696 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:58:37,696 INFO L276 IsEmpty]: Start isEmpty. Operand 8827 states and 13810 transitions. [2018-07-24 14:58:37,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-07-24 14:58:37,703 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:58:37,703 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:58:37,704 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 14:58:37,704 INFO L82 PathProgramCache]: Analyzing trace with hash 527342317, now seen corresponding path program 1 times [2018-07-24 14:58:37,704 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:58:37,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:37,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:37,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:37,706 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:58:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:58:37,958 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:58:37,958 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:58:37,958 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:58:37,959 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:58:37,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:58:37,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:58:37,960 INFO L87 Difference]: Start difference. First operand 8827 states and 13810 transitions. Second operand 4 states. [2018-07-24 14:58:44,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:58:44,506 INFO L93 Difference]: Finished difference Result 21978 states and 34395 transitions. [2018-07-24 14:58:44,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:58:44,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2018-07-24 14:58:44,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:58:44,575 INFO L225 Difference]: With dead ends: 21978 [2018-07-24 14:58:44,575 INFO L226 Difference]: Without dead ends: 13157 [2018-07-24 14:58:44,617 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:58:44,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13157 states. [2018-07-24 14:58:44,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13157 to 13142. [2018-07-24 14:58:44,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13142 states. [2018-07-24 14:58:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13142 states to 13142 states and 18872 transitions. [2018-07-24 14:58:44,989 INFO L78 Accepts]: Start accepts. Automaton has 13142 states and 18872 transitions. Word has length 156 [2018-07-24 14:58:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:58:44,989 INFO L471 AbstractCegarLoop]: Abstraction has 13142 states and 18872 transitions. [2018-07-24 14:58:44,990 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:58:44,990 INFO L276 IsEmpty]: Start isEmpty. Operand 13142 states and 18872 transitions. [2018-07-24 14:58:44,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-24 14:58:44,996 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:58:44,997 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, 2, 2, 2, 2, 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] [2018-07-24 14:58:44,997 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 14:58:44,997 INFO L82 PathProgramCache]: Analyzing trace with hash -2004475520, now seen corresponding path program 1 times [2018-07-24 14:58:44,997 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:58:44,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:44,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:44,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:44,999 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:58:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:45,278 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:58:45,737 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 84 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:58:45,738 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:58:45,738 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 14:58:45,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:45,758 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:58:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:45,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:58:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-07-24 14:58:46,274 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:58:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 84 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:58:46,520 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:58:46,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 14:58:46,521 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:58:46,521 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:58:46,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:58:46,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:58:46,522 INFO L87 Difference]: Start difference. First operand 13142 states and 18872 transitions. Second operand 5 states. [2018-07-24 14:58:52,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:58:52,612 INFO L93 Difference]: Finished difference Result 26443 states and 38219 transitions. [2018-07-24 14:58:52,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:58:52,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2018-07-24 14:58:52,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:58:52,664 INFO L225 Difference]: With dead ends: 26443 [2018-07-24 14:58:52,664 INFO L226 Difference]: Without dead ends: 13307 [2018-07-24 14:58:52,709 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 387 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:58:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13307 states. [2018-07-24 14:58:52,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13307 to 12570. [2018-07-24 14:58:52,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12570 states. [2018-07-24 14:58:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12570 states to 12570 states and 17158 transitions. [2018-07-24 14:58:53,026 INFO L78 Accepts]: Start accepts. Automaton has 12570 states and 17158 transitions. Word has length 196 [2018-07-24 14:58:53,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:58:53,027 INFO L471 AbstractCegarLoop]: Abstraction has 12570 states and 17158 transitions. [2018-07-24 14:58:53,027 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:58:53,027 INFO L276 IsEmpty]: Start isEmpty. Operand 12570 states and 17158 transitions. [2018-07-24 14:58:53,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-07-24 14:58:53,036 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:58:53,036 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:58:53,037 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 14:58:53,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1689810516, now seen corresponding path program 1 times [2018-07-24 14:58:53,037 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:58:53,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:53,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:53,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:53,039 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:58:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 199 proven. 69 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 14:58:53,585 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:58:53,585 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:58:53,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:53,596 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:58:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:53,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:58:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-07-24 14:58:54,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:58:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 199 proven. 69 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 14:58:55,221 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:58:55,221 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:58:55,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:55,247 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:58:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:55,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:58:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-07-24 14:58:55,669 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:58:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 199 proven. 69 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 14:58:56,298 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:58:56,299 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 11 [2018-07-24 14:58:56,299 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:58:56,300 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 14:58:56,300 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 14:58:56,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:58:56,301 INFO L87 Difference]: Start difference. First operand 12570 states and 17158 transitions. Second operand 8 states. [2018-07-24 14:59:05,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:59:05,808 INFO L93 Difference]: Finished difference Result 25184 states and 34430 transitions. [2018-07-24 14:59:05,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 14:59:05,809 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 319 [2018-07-24 14:59:05,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:59:05,857 INFO L225 Difference]: With dead ends: 25184 [2018-07-24 14:59:05,857 INFO L226 Difference]: Without dead ends: 12620 [2018-07-24 14:59:05,887 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1291 GetRequests, 1271 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-07-24 14:59:05,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12620 states. [2018-07-24 14:59:06,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12620 to 12592. [2018-07-24 14:59:06,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12592 states. [2018-07-24 14:59:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12592 states to 12592 states and 16029 transitions. [2018-07-24 14:59:06,134 INFO L78 Accepts]: Start accepts. Automaton has 12592 states and 16029 transitions. Word has length 319 [2018-07-24 14:59:06,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:59:06,135 INFO L471 AbstractCegarLoop]: Abstraction has 12592 states and 16029 transitions. [2018-07-24 14:59:06,135 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 14:59:06,135 INFO L276 IsEmpty]: Start isEmpty. Operand 12592 states and 16029 transitions. [2018-07-24 14:59:06,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-07-24 14:59:06,143 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:59:06,144 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-24 14:59:06,144 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 14:59:06,144 INFO L82 PathProgramCache]: Analyzing trace with hash -428502356, now seen corresponding path program 1 times [2018-07-24 14:59:06,145 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:59:06,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:59:06,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:06,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:59:06,146 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:59:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 203 proven. 73 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-07-24 14:59:06,730 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:59:06,730 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 14:59:06,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:06,746 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:59:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:06,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:59:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-07-24 14:59:07,317 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:59:07,616 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:59:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 203 proven. 73 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-07-24 14:59:07,979 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:59:07,979 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:59:07,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:07,996 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:59:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:08,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:59:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-07-24 14:59:08,326 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:59:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 203 proven. 73 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-07-24 14:59:08,705 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:59:08,705 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:59:08,705 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:59:08,707 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:59:08,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:59:08,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:59:08,708 INFO L87 Difference]: Start difference. First operand 12592 states and 16029 transitions. Second operand 9 states. [2018-07-24 14:59:23,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:59:23,524 INFO L93 Difference]: Finished difference Result 49555 states and 68799 transitions. [2018-07-24 14:59:23,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 14:59:23,525 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 327 [2018-07-24 14:59:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:59:23,679 INFO L225 Difference]: With dead ends: 49555 [2018-07-24 14:59:23,680 INFO L226 Difference]: Without dead ends: 33525 [2018-07-24 14:59:23,762 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1307 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:59:23,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33525 states. [2018-07-24 14:59:24,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33525 to 31321. [2018-07-24 14:59:24,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31321 states. [2018-07-24 14:59:24,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31321 states to 31321 states and 36704 transitions. [2018-07-24 14:59:24,541 INFO L78 Accepts]: Start accepts. Automaton has 31321 states and 36704 transitions. Word has length 327 [2018-07-24 14:59:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:59:24,541 INFO L471 AbstractCegarLoop]: Abstraction has 31321 states and 36704 transitions. [2018-07-24 14:59:24,541 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:59:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 31321 states and 36704 transitions. [2018-07-24 14:59:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-24 14:59:24,555 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:59:24,555 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2018-07-24 14:59:24,555 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 14:59:24,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1814072135, now seen corresponding path program 1 times [2018-07-24 14:59:24,556 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:59:24,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:59:24,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:24,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:59:24,557 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:59:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:25,491 WARN L169 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-07-24 14:59:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 380 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:59:25,849 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:59:25,849 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:59:25,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:25,858 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:59:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:25,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:59:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 14:59:26,260 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:59:26,458 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 14:59:26,480 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:59:26,480 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:59:26,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:26,497 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:59:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:26,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:59:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 14:59:27,111 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:59:27,320 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 14:59:27,322 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:59:27,323 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 20 [2018-07-24 14:59:27,323 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:59:27,324 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 14:59:27,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 14:59:27,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:59:27,325 INFO L87 Difference]: Start difference. First operand 31321 states and 36704 transitions. Second operand 15 states. [2018-07-24 14:59:42,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:59:42,314 INFO L93 Difference]: Finished difference Result 80622 states and 98653 transitions. [2018-07-24 14:59:42,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-07-24 14:59:42,315 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 360 [2018-07-24 14:59:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:59:42,486 INFO L225 Difference]: With dead ends: 80622 [2018-07-24 14:59:42,487 INFO L226 Difference]: Without dead ends: 49312 [2018-07-24 14:59:42,585 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1505 GetRequests, 1455 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=562, Invalid=1790, Unknown=0, NotChecked=0, Total=2352 [2018-07-24 14:59:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49312 states. [2018-07-24 14:59:43,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49312 to 46436. [2018-07-24 14:59:43,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46436 states. [2018-07-24 14:59:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46436 states to 46436 states and 53323 transitions. [2018-07-24 14:59:43,430 INFO L78 Accepts]: Start accepts. Automaton has 46436 states and 53323 transitions. Word has length 360 [2018-07-24 14:59:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:59:43,431 INFO L471 AbstractCegarLoop]: Abstraction has 46436 states and 53323 transitions. [2018-07-24 14:59:43,431 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 14:59:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand 46436 states and 53323 transitions. [2018-07-24 14:59:43,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2018-07-24 14:59:43,508 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:59:43,509 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:59:43,509 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 14:59:43,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1239148144, now seen corresponding path program 1 times [2018-07-24 14:59:43,510 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:59:43,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:59:43,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:43,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:59:43,511 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:59:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:44,194 WARN L169 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-07-24 14:59:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 194 proven. 138 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-07-24 14:59:44,846 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:59:44,847 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 14:59:44,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:44,855 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:59:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:45,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:59:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 14:59:45,728 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:59:46,070 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 14:59:46,092 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:59:46,093 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-07-24 14:59:46,093 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:59:46,094 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:59:46,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:59:46,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:59:46,094 INFO L87 Difference]: Start difference. First operand 46436 states and 53323 transitions. Second operand 3 states. [2018-07-24 14:59:51,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:59:51,139 INFO L93 Difference]: Finished difference Result 108380 states and 125088 transitions. [2018-07-24 14:59:51,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:59:51,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 671 [2018-07-24 14:59:51,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:59:51,333 INFO L225 Difference]: With dead ends: 108380 [2018-07-24 14:59:51,333 INFO L226 Difference]: Without dead ends: 60633 [2018-07-24 14:59:51,434 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1352 GetRequests, 1343 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:59:51,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60633 states. [2018-07-24 14:59:52,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60633 to 57914. [2018-07-24 14:59:52,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57914 states. [2018-07-24 14:59:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57914 states to 57914 states and 65797 transitions. [2018-07-24 14:59:52,920 INFO L78 Accepts]: Start accepts. Automaton has 57914 states and 65797 transitions. Word has length 671 [2018-07-24 14:59:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:59:52,922 INFO L471 AbstractCegarLoop]: Abstraction has 57914 states and 65797 transitions. [2018-07-24 14:59:52,922 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:59:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 57914 states and 65797 transitions. [2018-07-24 14:59:53,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2018-07-24 14:59:53,037 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:59:53,038 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:59:53,038 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 14:59:53,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1082501129, now seen corresponding path program 1 times [2018-07-24 14:59:53,039 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:59:53,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:59:53,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:53,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:59:53,040 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:59:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 368 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:59:56,503 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:59:56,503 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 14:59:56,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:56,511 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:59:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:56,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:59:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 14:59:57,413 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:59:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 14:59:58,144 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:59:58,144 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [19] total 20 [2018-07-24 14:59:58,144 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:59:58,147 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:59:58,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:59:58,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:59:58,147 INFO L87 Difference]: Start difference. First operand 57914 states and 65797 transitions. Second operand 3 states. [2018-07-24 15:00:02,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:00:02,249 INFO L93 Difference]: Finished difference Result 129788 states and 149185 transitions. [2018-07-24 15:00:02,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:00:02,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 780 [2018-07-24 15:00:02,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:00:02,485 INFO L225 Difference]: With dead ends: 129788 [2018-07-24 15:00:02,485 INFO L226 Difference]: Without dead ends: 70601 [2018-07-24 15:00:02,616 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1586 GetRequests, 1561 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2018-07-24 15:00:02,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70601 states. [2018-07-24 15:00:03,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70601 to 69868. [2018-07-24 15:00:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69868 states. [2018-07-24 15:00:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69868 states to 69868 states and 78471 transitions. [2018-07-24 15:00:03,722 INFO L78 Accepts]: Start accepts. Automaton has 69868 states and 78471 transitions. Word has length 780 [2018-07-24 15:00:03,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:00:03,725 INFO L471 AbstractCegarLoop]: Abstraction has 69868 states and 78471 transitions. [2018-07-24 15:00:03,725 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:00:03,725 INFO L276 IsEmpty]: Start isEmpty. Operand 69868 states and 78471 transitions. [2018-07-24 15:00:03,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2018-07-24 15:00:03,851 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:00:03,852 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 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, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:00:03,852 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 15:00:03,853 INFO L82 PathProgramCache]: Analyzing trace with hash 2111599768, now seen corresponding path program 1 times [2018-07-24 15:00:03,853 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:00:03,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:00:03,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:03,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:00:03,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:00:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 299 proven. 304 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-07-24 15:00:05,335 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:00:05,335 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 15:00:05,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:05,342 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:00:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:05,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:00:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 731 proven. 2 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-07-24 15:00:06,010 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:00:07,025 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 299 proven. 304 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-07-24 15:00:07,046 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:00:07,046 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 15:00:07,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:07,063 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:00:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:07,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:00:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 731 proven. 2 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-07-24 15:00:08,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:00:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 299 proven. 304 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-07-24 15:00:09,067 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:00:09,068 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 15:00:09,068 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:00:09,070 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:00:09,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:00:09,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 15:00:09,070 INFO L87 Difference]: Start difference. First operand 69868 states and 78471 transitions. Second operand 9 states. [2018-07-24 15:00:22,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:00:22,869 INFO L93 Difference]: Finished difference Result 205824 states and 246933 transitions. [2018-07-24 15:00:22,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 15:00:22,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 956 [2018-07-24 15:00:22,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:00:23,396 INFO L225 Difference]: With dead ends: 205824 [2018-07-24 15:00:23,397 INFO L226 Difference]: Without dead ends: 135967 [2018-07-24 15:00:23,649 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3846 GetRequests, 3823 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 15:00:23,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135967 states. [2018-07-24 15:00:25,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135967 to 135044. [2018-07-24 15:00:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135044 states. [2018-07-24 15:00:26,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135044 states to 135044 states and 157577 transitions. [2018-07-24 15:00:26,541 INFO L78 Accepts]: Start accepts. Automaton has 135044 states and 157577 transitions. Word has length 956 [2018-07-24 15:00:26,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:00:26,542 INFO L471 AbstractCegarLoop]: Abstraction has 135044 states and 157577 transitions. [2018-07-24 15:00:26,542 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 15:00:26,542 INFO L276 IsEmpty]: Start isEmpty. Operand 135044 states and 157577 transitions. [2018-07-24 15:00:26,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2018-07-24 15:00:26,730 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:00:26,731 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:00:26,731 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 15:00:26,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1753639155, now seen corresponding path program 1 times [2018-07-24 15:00:26,732 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:00:26,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:00:26,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:26,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:00:26,733 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:00:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 531 proven. 249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:00:29,232 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:00:29,232 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 15:00:29,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:29,239 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:00:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:29,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:00:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 655 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 15:00:30,697 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:00:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 655 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 15:00:32,070 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:00:32,070 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 15:00:32,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:32,086 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:00:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:32,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:00:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 655 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 15:00:34,091 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:00:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 655 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 15:00:35,705 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:00:35,705 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 5, 5] total 19 [2018-07-24 15:00:35,705 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:00:35,707 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-24 15:00:35,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-24 15:00:35,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-07-24 15:00:35,708 INFO L87 Difference]: Start difference. First operand 135044 states and 157577 transitions. Second operand 17 states. [2018-07-24 15:00:54,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:00:54,652 INFO L93 Difference]: Finished difference Result 273582 states and 316998 transitions. [2018-07-24 15:00:54,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-24 15:00:54,653 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1056 [2018-07-24 15:00:54,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:00:54,959 INFO L225 Difference]: With dead ends: 273582 [2018-07-24 15:00:54,960 INFO L226 Difference]: Without dead ends: 98179 [2018-07-24 15:00:55,292 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4340 GetRequests, 4259 SyntacticMatches, 10 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1106, Invalid=4150, Unknown=0, NotChecked=0, Total=5256 [2018-07-24 15:00:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98179 states. [2018-07-24 15:00:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98179 to 95896. [2018-07-24 15:00:56,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95896 states. [2018-07-24 15:00:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95896 states to 95896 states and 104350 transitions. [2018-07-24 15:00:57,261 INFO L78 Accepts]: Start accepts. Automaton has 95896 states and 104350 transitions. Word has length 1056 [2018-07-24 15:00:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:00:57,263 INFO L471 AbstractCegarLoop]: Abstraction has 95896 states and 104350 transitions. [2018-07-24 15:00:57,263 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-24 15:00:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 95896 states and 104350 transitions. [2018-07-24 15:00:57,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1239 [2018-07-24 15:00:57,349 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:00:57,350 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2018-07-24 15:00:57,350 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 15:00:57,350 INFO L82 PathProgramCache]: Analyzing trace with hash -606868280, now seen corresponding path program 1 times [2018-07-24 15:00:57,350 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:00:57,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:00:57,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:57,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:00:57,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:00:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:58,346 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 15:00:58,666 WARN L169 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-24 15:01:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1868 backedges. 569 proven. 548 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2018-07-24 15:01:00,938 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:01:00,938 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 15:01:00,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:00,945 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:01:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:01,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:01:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1868 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 1598 trivial. 0 not checked. [2018-07-24 15:01:02,112 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:01:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1868 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 1598 trivial. 0 not checked. [2018-07-24 15:01:02,829 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:01:02,829 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [16] total 17 [2018-07-24 15:01:02,829 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:02,830 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:01:02,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:01:02,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-07-24 15:01:02,831 INFO L87 Difference]: Start difference. First operand 95896 states and 104350 transitions. Second operand 3 states. [2018-07-24 15:01:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:01:06,384 INFO L93 Difference]: Finished difference Result 183170 states and 199316 transitions. [2018-07-24 15:01:06,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:01:06,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1238 [2018-07-24 15:01:06,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:01:06,387 INFO L225 Difference]: With dead ends: 183170 [2018-07-24 15:01:06,387 INFO L226 Difference]: Without dead ends: 0 [2018-07-24 15:01:06,575 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2495 GetRequests, 2475 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-07-24 15:01:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-24 15:01:06,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-24 15:01:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-24 15:01:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-24 15:01:06,577 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1238 [2018-07-24 15:01:06,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:01:06,577 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-24 15:01:06,577 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:01:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-24 15:01:06,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-24 15:01:06,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-24 15:01:07,652 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:07,959 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:07,998 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,007 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,009 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,121 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,127 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,149 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,150 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,225 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,226 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,227 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,242 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,281 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,283 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,470 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,472 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,477 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,569 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,806 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,807 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,808 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,846 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:08,888 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,175 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,277 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,279 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,280 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,603 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,664 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,696 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,698 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:09,897 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,170 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,225 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,227 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,242 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,257 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,263 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,264 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,271 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,272 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,272 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,584 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,658 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,770 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,780 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,786 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,889 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,892 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,966 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,978 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:10,988 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,045 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,055 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,129 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,149 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,246 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,280 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,312 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,321 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,352 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,372 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,435 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,462 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,481 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,513 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,557 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,568 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,574 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,645 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,651 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,740 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,749 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,787 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:11,817 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,119 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,134 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,142 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,204 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,374 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,574 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,637 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,726 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,884 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,914 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:12,986 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,061 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,188 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,198 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,209 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,238 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,282 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,295 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,321 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,347 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,412 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,521 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,597 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,620 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,635 WARN L169 SmtUtils]: Spent 3.45 s on a formula simplification. DAG size of input: 1162 DAG size of output: 828 [2018-07-24 15:01:13,671 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,672 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,682 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,686 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,687 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,688 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,890 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,903 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,935 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,987 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:13,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,009 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,013 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,083 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,085 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,150 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,161 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,170 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,188 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,208 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,260 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,273 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,334 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,354 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,358 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,373 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,379 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,401 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,459 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,476 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,489 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,539 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,549 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,560 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,565 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,597 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,637 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,643 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,777 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:14,807 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:15,064 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:15,080 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:15,088 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:15,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:15,373 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:15,742 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:15,812 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:15,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:15,920 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,057 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,075 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,084 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,137 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,146 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,212 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,323 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,332 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,367 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,406 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,417 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,440 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,463 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,483 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,521 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,616 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,689 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,712 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 15:01:16,726 WARN L169 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 1162 DAG size of output: 828 [2018-07-24 15:01:20,424 WARN L169 SmtUtils]: Spent 3.65 s on a formula simplification. DAG size of input: 470 DAG size of output: 76 [2018-07-24 15:01:24,463 WARN L169 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 549 DAG size of output: 76 [2018-07-24 15:01:28,527 WARN L169 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 549 DAG size of output: 76 Received shutdown request... [2018-07-24 15:01:34,881 WARN L177 SmtUtils]: Removed 10 from assertion stack [2018-07-24 15:01:34,882 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-07-24 15:01:34,883 INFO L168 Benchmark]: Toolchain (without parser) took 220368.11 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -996.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-07-24 15:01:34,884 INFO L168 Benchmark]: CDTParser took 0.22 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 15:01:34,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1928.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. [2018-07-24 15:01:34,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 219.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 15:01:34,886 INFO L168 Benchmark]: Boogie Preprocessor took 640.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 872.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-07-24 15:01:34,890 INFO L168 Benchmark]: RCFGBuilder took 8025.15 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 543.9 MB). Peak memory consumption was 543.9 MB. Max. memory is 7.1 GB. [2018-07-24 15:01:34,890 INFO L168 Benchmark]: TraceAbstraction took 209546.17 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.4 GB in the end (delta: -654.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-07-24 15:01:34,896 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1928.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 219.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 640.87 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 872.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8025.15 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 543.9 MB). Peak memory consumption was 543.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209546.17 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.4 GB in the end (delta: -654.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 135]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 509. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-01-34-914.csv Completed graceful shutdown