java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:59:59,472 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:59:59,474 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:59:59,485 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:59:59,486 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:59:59,487 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:59:59,488 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:59:59,490 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:59:59,492 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:59:59,493 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:59:59,494 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:59:59,494 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:59:59,495 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:59:59,496 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:59:59,497 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:59:59,498 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:59:59,499 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:59:59,501 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:59:59,506 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:59:59,508 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:59:59,512 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:59:59,513 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:59:59,518 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:59:59,519 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:59:59,519 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:59:59,520 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:59:59,521 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:59:59,522 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:59:59,525 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:59:59,526 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:59:59,526 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:59:59,527 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:59:59,527 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:59:59,527 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:59:59,530 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:59:59,531 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:59:59,531 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 [2018-09-10 11:59:59,553 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:59:59,553 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:59:59,554 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:59:59,554 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:59:59,555 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:59:59,555 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:59:59,555 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:59:59,555 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:59:59,555 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:59:59,556 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:59:59,556 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:59:59,556 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:59:59,557 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:59:59,557 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:59:59,557 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:59:59,557 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:59:59,557 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:59:59,557 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:59:59,558 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:59:59,558 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:59:59,558 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:59:59,558 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:59:59,558 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:59:59,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:59:59,559 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:59:59,559 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:59:59,559 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:59:59,560 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:59:59,560 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:59:59,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:59:59,560 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:59:59,560 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:59:59,560 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:59:59,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:59:59,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:59:59,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:59:59,624 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:59:59,624 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:59:59,625 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59_true-unreach-call.c [2018-09-10 11:59:59,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd9818412/8fd91cada1bb4ed8a8ae0313eecd5b44/FLAG8e1d81cff [2018-09-10 12:00:00,436 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:00:00,437 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label59_true-unreach-call.c [2018-09-10 12:00:00,479 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd9818412/8fd91cada1bb4ed8a8ae0313eecd5b44/FLAG8e1d81cff [2018-09-10 12:00:00,498 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd9818412/8fd91cada1bb4ed8a8ae0313eecd5b44 [2018-09-10 12:00:00,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:00:00,513 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:00:00,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:00:00,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:00:00,523 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:00:00,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:00:00" (1/1) ... [2018-09-10 12:00:00,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab40953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:00, skipping insertion in model container [2018-09-10 12:00:00,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:00:00" (1/1) ... [2018-09-10 12:00:00,924 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:00:02,115 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:00:02,136 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:00:03,019 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:00:03,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:03 WrapperNode [2018-09-10 12:00:03,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:00:03,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:00:03,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:00:03,431 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:00:03,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:03" (1/1) ... [2018-09-10 12:00:03,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:03" (1/1) ... [2018-09-10 12:00:03,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:00:03,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:00:03,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:00:03,712 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:00:04,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:03" (1/1) ... [2018-09-10 12:00:04,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:03" (1/1) ... [2018-09-10 12:00:04,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:03" (1/1) ... [2018-09-10 12:00:04,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:03" (1/1) ... [2018-09-10 12:00:04,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:03" (1/1) ... [2018-09-10 12:00:04,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:03" (1/1) ... [2018-09-10 12:00:04,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:03" (1/1) ... [2018-09-10 12:00:04,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:00:04,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:00:04,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:00:04,902 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:00:04,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:03" (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 [2018-09-10 12:00:04,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:00:04,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:00:04,979 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 [2018-09-10 12:00:04,979 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 [2018-09-10 12:00:04,979 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 [2018-09-10 12:00:04,979 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 [2018-09-10 12:00:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:00:04,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:00:04,980 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_output4 [2018-09-10 12:00:04,980 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_output4 [2018-09-10 12:00:04,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:00:04,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:00:04,981 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 [2018-09-10 12:00:04,981 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 [2018-09-10 12:00:19,317 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:00:19,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:00:19 BoogieIcfgContainer [2018-09-10 12:00:19,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:00:19,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:00:19,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:00:19,322 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:00:19,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:00:00" (1/3) ... [2018-09-10 12:00:19,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a6efcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:00:19, skipping insertion in model container [2018-09-10 12:00:19,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:00:03" (2/3) ... [2018-09-10 12:00:19,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a6efcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:00:19, skipping insertion in model container [2018-09-10 12:00:19,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:00:19" (3/3) ... [2018-09-10 12:00:19,326 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label59_true-unreach-call.c [2018-09-10 12:00:19,335 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:00:19,344 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:00:19,407 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:00:19,408 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:00:19,408 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:00:19,408 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:00:19,408 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:00:19,408 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:00:19,408 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:00:19,409 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:00:19,409 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:00:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 12:00:19,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-10 12:00:19,461 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:19,462 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:00:19,463 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:19,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1497363319, now seen corresponding path program 1 times [2018-09-10 12:00:19,472 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:19,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:19,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:19,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:19,529 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:00:20,019 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:00:20,020 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:00:20,020 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:20,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:00:20,041 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:00:20,042 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:00:20,045 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-10 12:00:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:36,381 INFO L93 Difference]: Finished difference Result 4065 states and 7606 transitions. [2018-09-10 12:00:36,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:00:36,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-09-10 12:00:36,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:36,445 INFO L225 Difference]: With dead ends: 4065 [2018-09-10 12:00:36,446 INFO L226 Difference]: Without dead ends: 2939 [2018-09-10 12:00:36,457 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:00:36,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2018-09-10 12:00:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1972. [2018-09-10 12:00:36,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2018-09-10 12:00:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3594 transitions. [2018-09-10 12:00:36,650 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3594 transitions. Word has length 53 [2018-09-10 12:00:36,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:36,652 INFO L480 AbstractCegarLoop]: Abstraction has 1972 states and 3594 transitions. [2018-09-10 12:00:36,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:00:36,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3594 transitions. [2018-09-10 12:00:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-10 12:00:36,663 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:36,665 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:00:36,666 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:36,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1308144405, now seen corresponding path program 1 times [2018-09-10 12:00:36,667 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:36,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:36,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:36,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:36,668 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:37,015 WARN L175 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:00:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:00:37,078 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:00:37,078 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:00:37,079 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:37,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:00:37,081 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:00:37,081 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:00:37,081 INFO L87 Difference]: Start difference. First operand 1972 states and 3594 transitions. Second operand 6 states. [2018-09-10 12:00:53,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:53,044 INFO L93 Difference]: Finished difference Result 5660 states and 10515 transitions. [2018-09-10 12:00:53,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:00:53,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-09-10 12:00:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:53,069 INFO L225 Difference]: With dead ends: 5660 [2018-09-10 12:00:53,069 INFO L226 Difference]: Without dead ends: 3694 [2018-09-10 12:00:53,076 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:00:53,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2018-09-10 12:00:53,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3663. [2018-09-10 12:00:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3663 states. [2018-09-10 12:00:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 6064 transitions. [2018-09-10 12:00:53,181 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 6064 transitions. Word has length 126 [2018-09-10 12:00:53,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:53,182 INFO L480 AbstractCegarLoop]: Abstraction has 3663 states and 6064 transitions. [2018-09-10 12:00:53,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:00:53,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 6064 transitions. [2018-09-10 12:00:53,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-10 12:00:53,193 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:53,197 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:00:53,197 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:00:53,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1982650380, now seen corresponding path program 1 times [2018-09-10 12:00:53,197 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:53,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:53,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:53,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:53,199 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:00:53,466 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:00:53,466 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:00:53,466 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:53,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:00:53,467 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:00:53,468 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:00:53,468 INFO L87 Difference]: Start difference. First operand 3663 states and 6064 transitions. Second operand 6 states. [2018-09-10 12:01:08,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:08,339 INFO L93 Difference]: Finished difference Result 12410 states and 20905 transitions. [2018-09-10 12:01:08,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:01:08,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-09-10 12:01:08,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:08,391 INFO L225 Difference]: With dead ends: 12410 [2018-09-10 12:01:08,391 INFO L226 Difference]: Without dead ends: 8753 [2018-09-10 12:01:08,419 INFO L604 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 [2018-09-10 12:01:08,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2018-09-10 12:01:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 8702. [2018-09-10 12:01:08,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2018-09-10 12:01:08,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 13042 transitions. [2018-09-10 12:01:08,807 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 13042 transitions. Word has length 139 [2018-09-10 12:01:08,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:08,807 INFO L480 AbstractCegarLoop]: Abstraction has 8702 states and 13042 transitions. [2018-09-10 12:01:08,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:01:08,807 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 13042 transitions. [2018-09-10 12:01:08,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-09-10 12:01:08,811 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:08,811 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:01:08,811 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:08,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1239426260, now seen corresponding path program 1 times [2018-09-10 12:01:08,812 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:08,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:08,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:08,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:08,813 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:09,120 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:01:09,120 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:01:09,120 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:09,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:01:09,121 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:01:09,121 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:01:09,121 INFO L87 Difference]: Start difference. First operand 8702 states and 13042 transitions. Second operand 5 states. [2018-09-10 12:01:23,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:23,924 INFO L93 Difference]: Finished difference Result 26434 states and 42234 transitions. [2018-09-10 12:01:23,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:01:23,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2018-09-10 12:01:23,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:24,015 INFO L225 Difference]: With dead ends: 26434 [2018-09-10 12:01:24,016 INFO L226 Difference]: Without dead ends: 17738 [2018-09-10 12:01:24,043 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:01:24,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17738 states. [2018-09-10 12:01:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17738 to 17456. [2018-09-10 12:01:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17456 states. [2018-09-10 12:01:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17456 states to 17456 states and 25481 transitions. [2018-09-10 12:01:24,526 INFO L78 Accepts]: Start accepts. Automaton has 17456 states and 25481 transitions. Word has length 152 [2018-09-10 12:01:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:24,526 INFO L480 AbstractCegarLoop]: Abstraction has 17456 states and 25481 transitions. [2018-09-10 12:01:24,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:01:24,527 INFO L276 IsEmpty]: Start isEmpty. Operand 17456 states and 25481 transitions. [2018-09-10 12:01:24,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-09-10 12:01:24,531 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:24,531 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:01:24,531 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:24,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1602043564, now seen corresponding path program 1 times [2018-09-10 12:01:24,532 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:24,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:24,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:24,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:24,536 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:24,851 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:01:24,851 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:01:24,851 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:24,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:01:24,852 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:01:24,852 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:01:24,852 INFO L87 Difference]: Start difference. First operand 17456 states and 25481 transitions. Second operand 5 states. [2018-09-10 12:01:51,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:51,919 INFO L93 Difference]: Finished difference Result 53248 states and 82477 transitions. [2018-09-10 12:01:51,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:01:51,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2018-09-10 12:01:51,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:52,060 INFO L225 Difference]: With dead ends: 53248 [2018-09-10 12:01:52,060 INFO L226 Difference]: Without dead ends: 35798 [2018-09-10 12:01:52,123 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:01:52,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35798 states. [2018-09-10 12:01:52,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35798 to 35514. [2018-09-10 12:01:52,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35514 states. [2018-09-10 12:01:52,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35514 states to 35514 states and 52185 transitions. [2018-09-10 12:01:52,906 INFO L78 Accepts]: Start accepts. Automaton has 35514 states and 52185 transitions. Word has length 159 [2018-09-10 12:01:52,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:52,907 INFO L480 AbstractCegarLoop]: Abstraction has 35514 states and 52185 transitions. [2018-09-10 12:01:52,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:01:52,907 INFO L276 IsEmpty]: Start isEmpty. Operand 35514 states and 52185 transitions. [2018-09-10 12:01:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-09-10 12:01:52,912 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:52,912 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:01:52,913 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:52,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1844216296, now seen corresponding path program 1 times [2018-09-10 12:01:52,913 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:52,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:52,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:52,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:52,914 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:53,095 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:01:53,095 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:01:53,095 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:53,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:01:53,096 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:01:53,096 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:01:53,096 INFO L87 Difference]: Start difference. First operand 35514 states and 52185 transitions. Second operand 3 states. [2018-09-10 12:02:01,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:01,448 INFO L93 Difference]: Finished difference Result 71839 states and 106156 transitions. [2018-09-10 12:02:01,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:02:01,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2018-09-10 12:02:01,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:01,560 INFO L225 Difference]: With dead ends: 71839 [2018-09-10 12:02:01,560 INFO L226 Difference]: Without dead ends: 36331 [2018-09-10 12:02:01,643 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:02:01,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36331 states. [2018-09-10 12:02:02,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36331 to 36329. [2018-09-10 12:02:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36329 states. [2018-09-10 12:02:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36329 states to 36329 states and 48739 transitions. [2018-09-10 12:02:02,316 INFO L78 Accepts]: Start accepts. Automaton has 36329 states and 48739 transitions. Word has length 169 [2018-09-10 12:02:02,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:02:02,317 INFO L480 AbstractCegarLoop]: Abstraction has 36329 states and 48739 transitions. [2018-09-10 12:02:02,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:02:02,317 INFO L276 IsEmpty]: Start isEmpty. Operand 36329 states and 48739 transitions. [2018-09-10 12:02:02,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-10 12:02:02,323 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:02:02,324 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:02:02,324 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:02:02,324 INFO L82 PathProgramCache]: Analyzing trace with hash 577986766, now seen corresponding path program 1 times [2018-09-10 12:02:02,324 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:02:02,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:02,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:02,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:02,326 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:02:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:02:02,574 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:02:02,574 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:02:02,575 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:02:02,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:02:02,575 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:02:02,582 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:02:02,582 INFO L87 Difference]: Start difference. First operand 36329 states and 48739 transitions. Second operand 4 states. [2018-09-10 12:02:11,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:11,991 INFO L93 Difference]: Finished difference Result 80757 states and 108709 transitions. [2018-09-10 12:02:11,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:02:11,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-09-10 12:02:11,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:12,085 INFO L225 Difference]: With dead ends: 80757 [2018-09-10 12:02:12,086 INFO L226 Difference]: Without dead ends: 44434 [2018-09-10 12:02:12,145 INFO L604 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 [2018-09-10 12:02:12,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44434 states. [2018-09-10 12:02:12,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44434 to 42020. [2018-09-10 12:02:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42020 states. [2018-09-10 12:02:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42020 states to 42020 states and 51383 transitions. [2018-09-10 12:02:12,793 INFO L78 Accepts]: Start accepts. Automaton has 42020 states and 51383 transitions. Word has length 174 [2018-09-10 12:02:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:02:12,794 INFO L480 AbstractCegarLoop]: Abstraction has 42020 states and 51383 transitions. [2018-09-10 12:02:12,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:02:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 42020 states and 51383 transitions. [2018-09-10 12:02:12,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-09-10 12:02:12,804 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:02:12,805 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:02:12,805 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:02:12,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1126293598, now seen corresponding path program 1 times [2018-09-10 12:02:12,805 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:02:12,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:12,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:12,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:12,807 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:02:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:13,092 WARN L175 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:02:13,177 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:02:13,177 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:02:13,177 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:02:13,178 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:02:13,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:02:13,178 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:02:13,178 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:02:13,179 INFO L87 Difference]: Start difference. First operand 42020 states and 51383 transitions. Second operand 6 states. [2018-09-10 12:02:21,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:21,233 INFO L93 Difference]: Finished difference Result 84088 states and 104097 transitions. [2018-09-10 12:02:21,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:02:21,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 257 [2018-09-10 12:02:21,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:21,353 INFO L225 Difference]: With dead ends: 84088 [2018-09-10 12:02:21,354 INFO L226 Difference]: Without dead ends: 42074 [2018-09-10 12:02:21,416 INFO L604 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 [2018-09-10 12:02:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42074 states. [2018-09-10 12:02:21,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42074 to 41179. [2018-09-10 12:02:21,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41179 states. [2018-09-10 12:02:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41179 states to 41179 states and 48642 transitions. [2018-09-10 12:02:22,025 INFO L78 Accepts]: Start accepts. Automaton has 41179 states and 48642 transitions. Word has length 257 [2018-09-10 12:02:22,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:02:22,025 INFO L480 AbstractCegarLoop]: Abstraction has 41179 states and 48642 transitions. [2018-09-10 12:02:22,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:02:22,026 INFO L276 IsEmpty]: Start isEmpty. Operand 41179 states and 48642 transitions. [2018-09-10 12:02:22,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-09-10 12:02:22,043 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:02:22,043 INFO L376 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, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:02:22,044 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:02:22,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2094511640, now seen corresponding path program 1 times [2018-09-10 12:02:22,044 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:02:22,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:22,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:22,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:22,045 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:02:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:22,309 WARN L175 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:02:22,459 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 138 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 12:02:22,459 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:22,460 INFO L197 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 [2018-09-10 12:02:22,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:22,469 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:22,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-09-10 12:02:23,153 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:23,435 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 12:02:23,541 WARN L175 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 12:02:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 138 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 12:02:24,416 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:02:24,417 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-10 12:02:24,417 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:02:24,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:02:24,418 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:02:24,418 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:02:24,419 INFO L87 Difference]: Start difference. First operand 41179 states and 48642 transitions. Second operand 5 states. [2018-09-10 12:02:40,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:40,538 INFO L93 Difference]: Finished difference Result 123405 states and 148947 transitions. [2018-09-10 12:02:40,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 12:02:40,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2018-09-10 12:02:40,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:40,884 INFO L225 Difference]: With dead ends: 123405 [2018-09-10 12:02:40,884 INFO L226 Difference]: Without dead ends: 82232 [2018-09-10 12:02:41,025 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 641 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:02:41,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82232 states. [2018-09-10 12:02:42,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82232 to 81861. [2018-09-10 12:02:42,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81861 states. [2018-09-10 12:02:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81861 states to 81861 states and 93756 transitions. [2018-09-10 12:02:42,540 INFO L78 Accepts]: Start accepts. Automaton has 81861 states and 93756 transitions. Word has length 323 [2018-09-10 12:02:42,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:02:42,540 INFO L480 AbstractCegarLoop]: Abstraction has 81861 states and 93756 transitions. [2018-09-10 12:02:42,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:02:42,542 INFO L276 IsEmpty]: Start isEmpty. Operand 81861 states and 93756 transitions. [2018-09-10 12:02:42,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-09-10 12:02:42,573 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:02:42,573 INFO L376 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:02:42,574 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:02:42,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1600824864, now seen corresponding path program 1 times [2018-09-10 12:02:42,574 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:02:42,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:42,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:42,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:02:42,575 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:02:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:42,966 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 220 proven. 78 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-10 12:02:42,966 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:42,966 INFO L197 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 [2018-09-10 12:02:42,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:42,976 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:43,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-10 12:02:43,260 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 220 proven. 78 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-10 12:02:43,615 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:02:43,616 INFO L197 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 [2018-09-10 12:02:43,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:02:43,638 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:02:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:02:43,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:02:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-09-10 12:02:44,221 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:02:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 220 proven. 78 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-10 12:02:45,064 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:02:45,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 12:02:45,065 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:02:45,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:02:45,066 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:02:45,066 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:02:45,066 INFO L87 Difference]: Start difference. First operand 81861 states and 93756 transitions. Second operand 9 states. [2018-09-10 12:03:06,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:03:06,617 INFO L93 Difference]: Finished difference Result 218181 states and 274336 transitions. [2018-09-10 12:03:06,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-10 12:03:06,617 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 373 [2018-09-10 12:03:06,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:03:07,103 INFO L225 Difference]: With dead ends: 218181 [2018-09-10 12:03:07,104 INFO L226 Difference]: Without dead ends: 130694 [2018-09-10 12:03:07,356 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1514 GetRequests, 1491 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-10 12:03:07,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130694 states. [2018-09-10 12:03:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130694 to 129574. [2018-09-10 12:03:09,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129574 states. [2018-09-10 12:03:10,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129574 states to 129574 states and 154688 transitions. [2018-09-10 12:03:10,725 INFO L78 Accepts]: Start accepts. Automaton has 129574 states and 154688 transitions. Word has length 373 [2018-09-10 12:03:10,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:03:10,726 INFO L480 AbstractCegarLoop]: Abstraction has 129574 states and 154688 transitions. [2018-09-10 12:03:10,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:03:10,726 INFO L276 IsEmpty]: Start isEmpty. Operand 129574 states and 154688 transitions. [2018-09-10 12:03:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-09-10 12:03:10,788 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:03:10,789 INFO L376 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, 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, 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] [2018-09-10 12:03:10,789 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:03:10,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1650844598, now seen corresponding path program 1 times [2018-09-10 12:03:10,790 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:03:10,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:03:10,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:10,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:03:10,791 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:03:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-10 12:03:11,329 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:03:11,329 INFO L197 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 [2018-09-10 12:03:11,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:11,339 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:03:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:11,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:03:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-09-10 12:03:11,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:03:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 138 proven. 178 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-09-10 12:03:12,569 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:03:12,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-09-10 12:03:12,569 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:03:12,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:03:12,570 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:03:12,570 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:03:12,570 INFO L87 Difference]: Start difference. First operand 129574 states and 154688 transitions. Second operand 5 states. [2018-09-10 12:03:32,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:03:32,366 INFO L93 Difference]: Finished difference Result 264146 states and 318378 transitions. [2018-09-10 12:03:32,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:03:32,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 403 [2018-09-10 12:03:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:03:32,688 INFO L225 Difference]: With dead ends: 264146 [2018-09-10 12:03:32,689 INFO L226 Difference]: Without dead ends: 134578 [2018-09-10 12:03:32,886 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 801 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-10 12:03:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134578 states. [2018-09-10 12:03:35,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134578 to 132524. [2018-09-10 12:03:35,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132524 states. [2018-09-10 12:03:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132524 states to 132524 states and 158519 transitions. [2018-09-10 12:03:35,822 INFO L78 Accepts]: Start accepts. Automaton has 132524 states and 158519 transitions. Word has length 403 [2018-09-10 12:03:35,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:03:35,823 INFO L480 AbstractCegarLoop]: Abstraction has 132524 states and 158519 transitions. [2018-09-10 12:03:35,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:03:35,823 INFO L276 IsEmpty]: Start isEmpty. Operand 132524 states and 158519 transitions. [2018-09-10 12:03:35,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-09-10 12:03:35,862 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:03:35,862 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:03:35,863 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:03:35,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1103104699, now seen corresponding path program 1 times [2018-09-10 12:03:35,863 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:03:35,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:03:35,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:35,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:03:35,864 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:03:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 501 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-09-10 12:03:36,697 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:03:36,697 INFO L197 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 [2018-09-10 12:03:36,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:36,705 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:03:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:36,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:03:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 572 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-09-10 12:03:37,732 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:03:38,334 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-10 12:03:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 195 proven. 463 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-09-10 12:03:39,265 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:03:39,265 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:03:39,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:03:39,284 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:03:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:03:40,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:03:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 501 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-09-10 12:03:41,053 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:03:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 501 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-09-10 12:03:41,419 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:03:41,420 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8, 6, 5] total 21 [2018-09-10 12:03:41,420 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:03:41,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-10 12:03:41,422 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-10 12:03:41,422 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2018-09-10 12:03:41,423 INFO L87 Difference]: Start difference. First operand 132524 states and 158519 transitions. Second operand 13 states. Received shutdown request... [2018-09-10 12:03:49,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-10 12:03:49,322 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:03:49,328 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:03:49,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:03:49 BoogieIcfgContainer [2018-09-10 12:03:49,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:03:49,330 INFO L168 Benchmark]: Toolchain (without parser) took 228819.22 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -779.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-10 12:03:49,331 INFO L168 Benchmark]: CDTParser took 0.44 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. [2018-09-10 12:03:49,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2915.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:03:49,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 280.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:03:49,333 INFO L168 Benchmark]: Boogie Preprocessor took 1189.84 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 999.3 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:03:49,334 INFO L168 Benchmark]: RCFGBuilder took 14416.52 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 156.2 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 89.4 MB). Peak memory consumption was 744.0 MB. Max. memory is 7.1 GB. [2018-09-10 12:03:49,335 INFO L168 Benchmark]: TraceAbstraction took 210009.98 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 823.7 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 62.3 MB). Peak memory consumption was 886.0 MB. Max. memory is 7.1 GB. [2018-09-10 12:03:49,340 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 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 2915.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 280.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1189.84 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 999.3 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14416.52 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 156.2 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 89.4 MB). Peak memory consumption was 744.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210009.98 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 823.7 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 62.3 MB). Peak memory consumption was 886.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while BasicCegarLoop was constructing difference of abstraction (132524states) and FLOYD_HOARE automaton (currently 20 states, 13 states before enhancement), while ReachableStatesComputation was computing reachable states (7438 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 209.9s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 183.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6712 SDtfs, 43387 SDslu, 5603 SDs, 0 SdLazy, 72682 SolverSat, 14549 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 152.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5094 GetRequests, 4962 SyntacticMatches, 15 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132524occurred 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: 11.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 8471 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 5312 NumberOfCodeBlocks, 5312 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 7768 ConstructedInterpolants, 111 QuantifiedInterpolants, 9464539 SizeOfPredicates, 6 NumberOfNonLiveVariables, 4153 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 7565/8734 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/Problem13_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-03-49-355.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-03-49-355.csv Completed graceful shutdown