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_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 15:01:37,378 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 15:01:37,380 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 15:01:37,399 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 15:01:37,399 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 15:01:37,400 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 15:01:37,402 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 15:01:37,405 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 15:01:37,407 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 15:01:37,408 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 15:01:37,410 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 15:01:37,410 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 15:01:37,411 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 15:01:37,415 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 15:01:37,417 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 15:01:37,423 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 15:01:37,424 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 15:01:37,430 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 15:01:37,434 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 15:01:37,435 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 15:01:37,439 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 15:01:37,440 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 15:01:37,443 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 15:01:37,443 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 15:01:37,444 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 15:01:37,447 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 15:01:37,449 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 15:01:37,450 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 15:01:37,451 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 15:01:37,453 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 15:01:37,455 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 15:01:37,455 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 15:01:37,456 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 15:01:37,456 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 15:01:37,459 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 15:01:37,460 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 15:01:37,460 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 15:01:37,485 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 15:01:37,486 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 15:01:37,487 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 15:01:37,487 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 15:01:37,487 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 15:01:37,487 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 15:01:37,488 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 15:01:37,488 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 15:01:37,488 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 15:01:37,491 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 15:01:37,491 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 15:01:37,492 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 15:01:37,492 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 15:01:37,492 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 15:01:37,493 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 15:01:37,493 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 15:01:37,493 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 15:01:37,493 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 15:01:37,495 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 15:01:37,495 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 15:01:37,495 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 15:01:37,496 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 15:01:37,496 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 15:01:37,496 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 15:01:37,496 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 15:01:37,497 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 15:01:37,497 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 15:01:37,497 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 15:01:37,497 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 15:01:37,497 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 15:01:37,497 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 15:01:37,498 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 15:01:37,498 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 15:01:37,574 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 15:01:37,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 15:01:37,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 15:01:37,601 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 15:01:37,601 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 15:01:37,602 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label30_true-unreach-call.c [2018-07-24 15:01:37,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af61f889a/135015e1bbb845f59ab553419a503731/FLAGae8195707 [2018-07-24 15:01:38,427 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 15:01:38,428 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label30_true-unreach-call.c [2018-07-24 15:01:38,460 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af61f889a/135015e1bbb845f59ab553419a503731/FLAGae8195707 [2018-07-24 15:01:38,482 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af61f889a/135015e1bbb845f59ab553419a503731 [2018-07-24 15:01:38,495 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 15:01:38,497 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 15:01:38,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 15:01:38,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 15:01:38,507 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 15:01:38,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:01:38" (1/1) ... [2018-07-24 15:01:38,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3036c7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:38, skipping insertion in model container [2018-07-24 15:01:38,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:01:38" (1/1) ... [2018-07-24 15:01:38,856 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 15:01:39,634 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:01:39,652 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 15:01:40,137 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:01:40,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:40 WrapperNode [2018-07-24 15:01:40,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 15:01:40,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 15:01:40,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 15:01:40,301 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 15:01:40,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:40" (1/1) ... [2018-07-24 15:01:40,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:40" (1/1) ... [2018-07-24 15:01:40,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 15:01:40,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 15:01:40,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 15:01:40,484 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 15:01:40,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:40" (1/1) ... [2018-07-24 15:01:40,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:40" (1/1) ... [2018-07-24 15:01:40,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:40" (1/1) ... [2018-07-24 15:01:40,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:40" (1/1) ... [2018-07-24 15:01:41,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:40" (1/1) ... [2018-07-24 15:01:41,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:40" (1/1) ... [2018-07-24 15:01:41,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:40" (1/1) ... [2018-07-24 15:01:41,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 15:01:41,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 15:01:41,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 15:01:41,106 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 15:01:41,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:40" (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 15:01:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 15:01:41,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 15:01:41,184 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 15:01:41,184 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 15:01:41,184 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 15:01:41,184 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 15:01:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 15:01:41,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 15:01:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 15:01:41,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 15:01:41,185 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 15:01:41,185 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 15:01:49,166 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 15:01:49,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:01:49 BoogieIcfgContainer [2018-07-24 15:01:49,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 15:01:49,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 15:01:49,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 15:01:49,171 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 15:01:49,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:01:38" (1/3) ... [2018-07-24 15:01:49,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6261494d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:01:49, skipping insertion in model container [2018-07-24 15:01:49,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:40" (2/3) ... [2018-07-24 15:01:49,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6261494d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:01:49, skipping insertion in model container [2018-07-24 15:01:49,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:01:49" (3/3) ... [2018-07-24 15:01:49,175 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label30_true-unreach-call.c [2018-07-24 15:01:49,185 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 15:01:49,198 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 15:01:49,264 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 15:01:49,264 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 15:01:49,265 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 15:01:49,265 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 15:01:49,265 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 15:01:49,265 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 15:01:49,265 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 15:01:49,265 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 15:01:49,266 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 15:01:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 15:01:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-24 15:01:49,316 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:49,317 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:01:49,317 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 15:01:49,324 INFO L82 PathProgramCache]: Analyzing trace with hash 326634324, now seen corresponding path program 1 times [2018-07-24 15:01:49,327 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:49,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:49,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:49,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:49,386 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:49,801 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:01:49,827 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 15:01:49,830 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:01:49,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 15:01:49,830 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:49,836 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:01:49,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:01:49,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:01:49,855 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-24 15:01:57,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:01:57,054 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-24 15:01:57,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:01:57,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-07-24 15:01:57,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:01:57,091 INFO L225 Difference]: With dead ends: 2251 [2018-07-24 15:01:57,091 INFO L226 Difference]: Without dead ends: 1474 [2018-07-24 15:01:57,107 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:01:57,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-24 15:01:57,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-24 15:01:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-24 15:01:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-07-24 15:01:57,267 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 50 [2018-07-24 15:01:57,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:01:57,268 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-07-24 15:01:57,268 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:01:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-07-24 15:01:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-24 15:01:57,279 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:57,280 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, 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] [2018-07-24 15:01:57,280 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 15:01:57,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1081897506, now seen corresponding path program 1 times [2018-07-24 15:01:57,283 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:57,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:57,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:57,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:57,285 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:57,630 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:01:57,630 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:01:57,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:57,632 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:01:57,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:01:57,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:01:57,633 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-07-24 15:02:14,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:14,343 INFO L93 Difference]: Finished difference Result 5907 states and 11160 transitions. [2018-07-24 15:02:14,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 15:02:14,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-07-24 15:02:14,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:14,376 INFO L225 Difference]: With dead ends: 5907 [2018-07-24 15:02:14,377 INFO L226 Difference]: Without dead ends: 4439 [2018-07-24 15:02:14,391 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 15:02:14,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2018-07-24 15:02:14,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 4389. [2018-07-24 15:02:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4389 states. [2018-07-24 15:02:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 7149 transitions. [2018-07-24 15:02:14,533 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 7149 transitions. Word has length 122 [2018-07-24 15:02:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:14,534 INFO L471 AbstractCegarLoop]: Abstraction has 4389 states and 7149 transitions. [2018-07-24 15:02:14,534 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:02:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 7149 transitions. [2018-07-24 15:02:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-24 15:02:14,539 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:14,539 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, 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] [2018-07-24 15:02:14,540 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 15:02:14,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2068920665, now seen corresponding path program 1 times [2018-07-24 15:02:14,540 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:14,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:14,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:14,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:14,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:02:14,795 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:02:14,795 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:02:14,795 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:02:14,796 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:02:14,796 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:02:14,796 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:02:14,796 INFO L87 Difference]: Start difference. First operand 4389 states and 7149 transitions. Second operand 6 states. [2018-07-24 15:02:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:25,147 INFO L93 Difference]: Finished difference Result 17449 states and 29632 transitions. [2018-07-24 15:02:25,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:02:25,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-07-24 15:02:25,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:25,233 INFO L225 Difference]: With dead ends: 17449 [2018-07-24 15:02:25,233 INFO L226 Difference]: Without dead ends: 13066 [2018-07-24 15:02:25,271 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 15:02:25,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13066 states. [2018-07-24 15:02:25,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13066 to 12965. [2018-07-24 15:02:25,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12965 states. [2018-07-24 15:02:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12965 states to 12965 states and 20063 transitions. [2018-07-24 15:02:25,629 INFO L78 Accepts]: Start accepts. Automaton has 12965 states and 20063 transitions. Word has length 145 [2018-07-24 15:02:25,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:25,630 INFO L471 AbstractCegarLoop]: Abstraction has 12965 states and 20063 transitions. [2018-07-24 15:02:25,630 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:02:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 12965 states and 20063 transitions. [2018-07-24 15:02:25,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-24 15:02:25,635 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:25,635 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-07-24 15:02:25,636 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 15:02:25,636 INFO L82 PathProgramCache]: Analyzing trace with hash 708099528, now seen corresponding path program 1 times [2018-07-24 15:02:25,636 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:25,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:25,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:25,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:25,637 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:25,922 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:02:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 86 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:02:26,170 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:26,170 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 15:02:26,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:26,186 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:26,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 15:02:26,668 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 86 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:02:26,950 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:02:26,950 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 15:02:26,950 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:02:26,951 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:02:26,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:02:26,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:02:26,952 INFO L87 Difference]: Start difference. First operand 12965 states and 20063 transitions. Second operand 5 states. [2018-07-24 15:02:34,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:34,401 INFO L93 Difference]: Finished difference Result 34755 states and 57144 transitions. [2018-07-24 15:02:34,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:02:34,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2018-07-24 15:02:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:34,537 INFO L225 Difference]: With dead ends: 34755 [2018-07-24 15:02:34,538 INFO L226 Difference]: Without dead ends: 21796 [2018-07-24 15:02:34,603 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 415 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 15:02:34,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21796 states. [2018-07-24 15:02:35,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21796 to 21665. [2018-07-24 15:02:35,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21665 states. [2018-07-24 15:02:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21665 states to 21665 states and 30240 transitions. [2018-07-24 15:02:35,172 INFO L78 Accepts]: Start accepts. Automaton has 21665 states and 30240 transitions. Word has length 210 [2018-07-24 15:02:35,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:35,173 INFO L471 AbstractCegarLoop]: Abstraction has 21665 states and 30240 transitions. [2018-07-24 15:02:35,173 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:02:35,173 INFO L276 IsEmpty]: Start isEmpty. Operand 21665 states and 30240 transitions. [2018-07-24 15:02:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-07-24 15:02:35,183 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:35,183 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, 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, 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 15:02:35,184 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 15:02:35,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1889246549, now seen corresponding path program 1 times [2018-07-24 15:02:35,184 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:35,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:35,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:35,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:35,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 202 proven. 69 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 15:02:35,562 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:35,562 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 15:02:35,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:35,577 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:35,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 15:02:36,222 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 202 proven. 69 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 15:02:36,579 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:36,579 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 15:02:36,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:36,595 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:36,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 15:02:37,014 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:37,219 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 15:02:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 202 proven. 69 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 15:02:37,493 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:02:37,494 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 11 [2018-07-24 15:02:37,494 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:02:37,495 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 15:02:37,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 15:02:37,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:02:37,496 INFO L87 Difference]: Start difference. First operand 21665 states and 30240 transitions. Second operand 8 states. [2018-07-24 15:02:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:47,716 INFO L93 Difference]: Finished difference Result 52046 states and 77158 transitions. [2018-07-24 15:02:47,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 15:02:47,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 333 [2018-07-24 15:02:47,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:47,837 INFO L225 Difference]: With dead ends: 52046 [2018-07-24 15:02:47,838 INFO L226 Difference]: Without dead ends: 30387 [2018-07-24 15:02:47,907 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1347 GetRequests, 1327 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-07-24 15:02:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30387 states. [2018-07-24 15:02:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30387 to 30365. [2018-07-24 15:02:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30365 states. [2018-07-24 15:02:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30365 states to 30365 states and 42875 transitions. [2018-07-24 15:02:48,513 INFO L78 Accepts]: Start accepts. Automaton has 30365 states and 42875 transitions. Word has length 333 [2018-07-24 15:02:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:48,514 INFO L471 AbstractCegarLoop]: Abstraction has 30365 states and 42875 transitions. [2018-07-24 15:02:48,514 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 15:02:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 30365 states and 42875 transitions. [2018-07-24 15:02:48,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-24 15:02:48,525 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:48,525 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:02:48,525 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 15:02:48,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1415115276, now seen corresponding path program 1 times [2018-07-24 15:02:48,526 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:48,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:48,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:48,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:48,527 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:48,869 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:02:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 86 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:02:49,032 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:49,032 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 15:02:49,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:49,040 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:49,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 15:02:49,673 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 86 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:02:50,193 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:02:50,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 15:02:50,194 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:02:50,194 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:02:50,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:02:50,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:02:50,195 INFO L87 Difference]: Start difference. First operand 30365 states and 42875 transitions. Second operand 5 states. [2018-07-24 15:02:56,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:56,063 INFO L93 Difference]: Finished difference Result 67520 states and 98325 transitions. [2018-07-24 15:02:56,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:02:56,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 380 [2018-07-24 15:02:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:56,214 INFO L225 Difference]: With dead ends: 67520 [2018-07-24 15:02:56,214 INFO L226 Difference]: Without dead ends: 37161 [2018-07-24 15:02:56,282 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 754 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 15:02:56,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37161 states. [2018-07-24 15:02:57,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37161 to 36899. [2018-07-24 15:02:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36899 states. [2018-07-24 15:02:57,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36899 states to 36899 states and 48983 transitions. [2018-07-24 15:02:57,337 INFO L78 Accepts]: Start accepts. Automaton has 36899 states and 48983 transitions. Word has length 380 [2018-07-24 15:02:57,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:57,338 INFO L471 AbstractCegarLoop]: Abstraction has 36899 states and 48983 transitions. [2018-07-24 15:02:57,338 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:02:57,338 INFO L276 IsEmpty]: Start isEmpty. Operand 36899 states and 48983 transitions. [2018-07-24 15:02:57,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-07-24 15:02:57,352 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:57,353 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:02:57,353 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 15:02:57,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1519767739, now seen corresponding path program 1 times [2018-07-24 15:02:57,354 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:57,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:57,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:57,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:57,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:57,736 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:02:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 81 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:02:58,610 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:58,611 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:02:58,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:58,628 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:58,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 15:02:58,829 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 15:02:58,997 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:02:58,997 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-07-24 15:02:58,997 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:02:58,998 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:02:58,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:02:58,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:02:58,998 INFO L87 Difference]: Start difference. First operand 36899 states and 48983 transitions. Second operand 3 states. [2018-07-24 15:03:03,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:03:03,476 INFO L93 Difference]: Finished difference Result 71728 states and 95730 transitions. [2018-07-24 15:03:03,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:03:03,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 397 [2018-07-24 15:03:03,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:03:03,555 INFO L225 Difference]: With dead ends: 71728 [2018-07-24 15:03:03,555 INFO L226 Difference]: Without dead ends: 34835 [2018-07-24 15:03:03,895 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 795 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:03:03,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34835 states. [2018-07-24 15:03:04,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34835 to 34126. [2018-07-24 15:03:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34126 states. [2018-07-24 15:03:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34126 states to 34126 states and 41706 transitions. [2018-07-24 15:03:04,349 INFO L78 Accepts]: Start accepts. Automaton has 34126 states and 41706 transitions. Word has length 397 [2018-07-24 15:03:04,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:03:04,350 INFO L471 AbstractCegarLoop]: Abstraction has 34126 states and 41706 transitions. [2018-07-24 15:03:04,350 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:03:04,350 INFO L276 IsEmpty]: Start isEmpty. Operand 34126 states and 41706 transitions. [2018-07-24 15:03:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-07-24 15:03:04,363 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:03:04,363 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, 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, 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] [2018-07-24 15:03:04,363 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 15:03:04,364 INFO L82 PathProgramCache]: Analyzing trace with hash -648182935, now seen corresponding path program 1 times [2018-07-24 15:03:04,364 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:03:04,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:04,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:04,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:04,365 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:03:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 15:03:04,729 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:03:04,729 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 15:03:04,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:03:04,730 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 15:03:04,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 15:03:04,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 15:03:04,731 INFO L87 Difference]: Start difference. First operand 34126 states and 41706 transitions. Second operand 4 states. [2018-07-24 15:03:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:03:12,402 INFO L93 Difference]: Finished difference Result 79620 states and 98446 transitions. [2018-07-24 15:03:12,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 15:03:12,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 431 [2018-07-24 15:03:12,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:03:12,503 INFO L225 Difference]: With dead ends: 79620 [2018-07-24 15:03:12,503 INFO L226 Difference]: Without dead ends: 45500 [2018-07-24 15:03:12,555 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 15:03:12,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45500 states. [2018-07-24 15:03:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45500 to 44797. [2018-07-24 15:03:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44797 states. [2018-07-24 15:03:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44797 states to 44797 states and 53049 transitions. [2018-07-24 15:03:13,486 INFO L78 Accepts]: Start accepts. Automaton has 44797 states and 53049 transitions. Word has length 431 [2018-07-24 15:03:13,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:03:13,487 INFO L471 AbstractCegarLoop]: Abstraction has 44797 states and 53049 transitions. [2018-07-24 15:03:13,488 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 15:03:13,488 INFO L276 IsEmpty]: Start isEmpty. Operand 44797 states and 53049 transitions. [2018-07-24 15:03:13,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2018-07-24 15:03:13,535 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:03:13,536 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, 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, 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] [2018-07-24 15:03:13,536 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 15:03:13,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1377228451, now seen corresponding path program 1 times [2018-07-24 15:03:13,537 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:03:13,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:13,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:13,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:13,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:03:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 15:03:14,280 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:14,280 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 15:03:14,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:14,290 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:14,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 15:03:14,868 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 15:03:15,907 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:15,907 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 15:03:15,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:15,925 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:16,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 15:03:16,741 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 15:03:17,490 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:03:17,491 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 15:03:17,492 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:03:17,493 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:03:17,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:03:17,494 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-07-24 15:03:17,494 INFO L87 Difference]: Start difference. First operand 44797 states and 53049 transitions. Second operand 9 states. [2018-07-24 15:03:39,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:03:39,724 INFO L93 Difference]: Finished difference Result 136783 states and 178995 transitions. [2018-07-24 15:03:39,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-24 15:03:39,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 697 [2018-07-24 15:03:39,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:03:40,261 INFO L225 Difference]: With dead ends: 136783 [2018-07-24 15:03:40,261 INFO L226 Difference]: Without dead ends: 88838 [2018-07-24 15:03:40,497 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2872 GetRequests, 2817 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=566, Invalid=2296, Unknown=0, NotChecked=0, Total=2862 [2018-07-24 15:03:40,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88838 states. [2018-07-24 15:03:42,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88838 to 86896. [2018-07-24 15:03:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86896 states. [2018-07-24 15:03:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86896 states to 86896 states and 107947 transitions. [2018-07-24 15:03:42,408 INFO L78 Accepts]: Start accepts. Automaton has 86896 states and 107947 transitions. Word has length 697 [2018-07-24 15:03:42,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:03:42,408 INFO L471 AbstractCegarLoop]: Abstraction has 86896 states and 107947 transitions. [2018-07-24 15:03:42,408 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 15:03:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 86896 states and 107947 transitions. [2018-07-24 15:03:42,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2018-07-24 15:03:42,632 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:03:42,633 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:42,633 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 15:03:42,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1697576667, now seen corresponding path program 1 times [2018-07-24 15:03:42,634 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:03:42,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:42,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:42,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:42,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:03:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 494 proven. 96 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-07-24 15:03:44,281 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:44,281 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 15:03:44,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:44,296 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:44,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 1003 proven. 2 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-07-24 15:03:45,982 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 494 proven. 96 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-07-24 15:03:46,672 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:46,672 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:03:46,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:46,688 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:47,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 1003 proven. 2 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-07-24 15:03:48,116 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 494 proven. 96 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-07-24 15:03:48,671 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:03:48,672 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 15:03:48,672 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:03:48,675 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:03:48,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:03:48,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:03:48,676 INFO L87 Difference]: Start difference. First operand 86896 states and 107947 transitions. Second operand 9 states. [2018-07-24 15:04:03,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:04:03,508 INFO L93 Difference]: Finished difference Result 195986 states and 246283 transitions. [2018-07-24 15:04:03,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 15:04:03,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1023 [2018-07-24 15:04:03,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:04:03,953 INFO L225 Difference]: With dead ends: 195986 [2018-07-24 15:04:03,953 INFO L226 Difference]: Without dead ends: 109799 [2018-07-24 15:04:04,190 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4110 GetRequests, 4089 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 15:04:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109799 states. [2018-07-24 15:04:06,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109799 to 109074. [2018-07-24 15:04:06,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109074 states. [2018-07-24 15:04:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109074 states to 109074 states and 133179 transitions. [2018-07-24 15:04:06,349 INFO L78 Accepts]: Start accepts. Automaton has 109074 states and 133179 transitions. Word has length 1023 [2018-07-24 15:04:06,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:04:06,350 INFO L471 AbstractCegarLoop]: Abstraction has 109074 states and 133179 transitions. [2018-07-24 15:04:06,350 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 15:04:06,350 INFO L276 IsEmpty]: Start isEmpty. Operand 109074 states and 133179 transitions. [2018-07-24 15:04:06,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1134 [2018-07-24 15:04:06,617 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:04:06,618 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:04:06,618 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 15:04:06,619 INFO L82 PathProgramCache]: Analyzing trace with hash -661634207, now seen corresponding path program 1 times [2018-07-24 15:04:06,619 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:04:06,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:06,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:06,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:06,620 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:04:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 284 proven. 809 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2018-07-24 15:04:08,871 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:04:08,871 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 15:04:08,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:08,879 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:04:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:09,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:04:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 1066 proven. 2 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2018-07-24 15:04:09,936 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:04:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 459 proven. 74 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2018-07-24 15:04:10,850 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:04:10,851 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 15:04:10,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:10,867 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:04:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:11,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:04:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 1066 proven. 2 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2018-07-24 15:04:12,380 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:04:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 459 proven. 74 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2018-07-24 15:04:12,994 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:04:12,995 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 20 [2018-07-24 15:04:12,995 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:04:12,997 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 15:04:12,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 15:04:12,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2018-07-24 15:04:12,997 INFO L87 Difference]: Start difference. First operand 109074 states and 133179 transitions. Second operand 14 states. [2018-07-24 15:04:26,632 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2018-07-24 15:04:37,675 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2018-07-24 15:04:52,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:04:52,313 INFO L93 Difference]: Finished difference Result 248595 states and 303109 transitions. [2018-07-24 15:04:52,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-07-24 15:04:52,313 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1133 [2018-07-24 15:04:52,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:04:52,699 INFO L225 Difference]: With dead ends: 248595 [2018-07-24 15:04:52,699 INFO L226 Difference]: Without dead ends: 138175 [2018-07-24 15:04:52,920 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4643 GetRequests, 4572 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=916, Invalid=4054, Unknown=0, NotChecked=0, Total=4970 [2018-07-24 15:04:52,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138175 states. [2018-07-24 15:04:54,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138175 to 133943. [2018-07-24 15:04:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133943 states. [2018-07-24 15:04:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133943 states to 133943 states and 153401 transitions. [2018-07-24 15:04:55,073 INFO L78 Accepts]: Start accepts. Automaton has 133943 states and 153401 transitions. Word has length 1133 [2018-07-24 15:04:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:04:55,074 INFO L471 AbstractCegarLoop]: Abstraction has 133943 states and 153401 transitions. [2018-07-24 15:04:55,074 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 15:04:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 133943 states and 153401 transitions. [2018-07-24 15:04:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1593 [2018-07-24 15:04:55,207 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:04:55,208 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, 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, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:04:55,208 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 15:04:55,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1692403942, now seen corresponding path program 1 times [2018-07-24 15:04:55,209 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:04:55,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:55,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:55,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:55,210 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:04:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2399 backedges. 826 proven. 925 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-07-24 15:04:59,502 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:04:59,502 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 15:04:59,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:59,510 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:04:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:59,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:05:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2399 backedges. 1535 proven. 2 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2018-07-24 15:05:01,095 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:05:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2399 backedges. 585 proven. 74 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2018-07-24 15:05:02,153 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:05:02,153 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 15:05:02,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:05:02,169 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:05:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:05:03,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:05:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2399 backedges. 1535 proven. 2 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2018-07-24 15:05:04,033 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:05:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2399 backedges. 585 proven. 74 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2018-07-24 15:05:04,972 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:05:04,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 5, 5, 5, 5] total 24 [2018-07-24 15:05:04,974 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:05:04,975 INFO L450 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-07-24 15:05:04,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-07-24 15:05:04,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2018-07-24 15:05:04,976 INFO L87 Difference]: Start difference. First operand 133943 states and 153401 transitions. Second operand 22 states. [2018-07-24 15:05:14,554 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 Received shutdown request... [2018-07-24 15:05:30,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-07-24 15:05:30,074 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 15:05:30,079 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 15:05:30,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:05:30 BoogieIcfgContainer [2018-07-24 15:05:30,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 15:05:30,080 INFO L168 Benchmark]: Toolchain (without parser) took 231584.52 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -98.7 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-07-24 15:05:30,081 INFO L168 Benchmark]: CDTParser took 0.28 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 15:05:30,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1801.73 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: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. [2018-07-24 15:05:30,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 182.09 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 15:05:30,083 INFO L168 Benchmark]: Boogie Preprocessor took 621.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 874.0 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 15:05:30,084 INFO L168 Benchmark]: RCFGBuilder took 8061.67 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: 533.5 MB). Peak memory consumption was 533.5 MB. Max. memory is 7.1 GB. [2018-07-24 15:05:30,085 INFO L168 Benchmark]: TraceAbstraction took 220911.20 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 1.5 GB in the end (delta: 265.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-07-24 15:05:30,089 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 1801.73 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: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 182.09 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 621.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 874.0 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 8061.67 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: 533.5 MB). Peak memory consumption was 533.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220911.20 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 1.5 GB in the end (delta: 265.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 138). Cancelled while BasicCegarLoop was constructing difference of abstraction (133943states) and interpolant automaton (currently 54 states, 22 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 73 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 220.8s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 174.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3662 SDtfs, 60061 SDslu, 3758 SDs, 0 SdLazy, 115807 SolverSat, 22590 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 133.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21484 GetRequests, 21181 SyntacticMatches, 31 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4019 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133943occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 8877 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 5.0s SatisfiabilityAnalysisTime, 22.1s InterpolantComputationTime, 17056 NumberOfCodeBlocks, 17056 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 27561 ConstructedInterpolants, 0 QuantifiedInterpolants, 54983094 SizeOfPredicates, 4 NumberOfNonLiveVariables, 14290 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 38 InterpolantComputations, 8 PerfectInterpolantSequences, 29406/32395 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label30_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-05-30-102.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label30_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_15-05-30-102.csv Completed graceful shutdown