java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 13:04:05,328 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 13:04:05,330 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 13:04:05,342 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 13:04:05,342 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 13:04:05,343 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 13:04:05,345 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 13:04:05,347 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 13:04:05,348 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 13:04:05,349 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 13:04:05,350 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 13:04:05,350 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 13:04:05,351 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 13:04:05,352 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 13:04:05,353 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 13:04:05,354 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 13:04:05,355 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 13:04:05,357 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 13:04:05,359 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 13:04:05,360 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 13:04:05,362 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 13:04:05,363 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 13:04:05,365 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 13:04:05,365 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 13:04:05,366 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 13:04:05,367 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 13:04:05,368 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 13:04:05,368 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 13:04:05,369 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 13:04:05,370 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 13:04:05,371 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 13:04:05,371 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 13:04:05,372 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 13:04:05,372 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 13:04:05,373 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 13:04:05,374 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 13:04:05,374 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 13:04:05,389 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 13:04:05,390 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 13:04:05,391 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 13:04:05,391 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 13:04:05,391 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 13:04:05,391 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 13:04:05,391 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 13:04:05,392 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 13:04:05,392 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 13:04:05,392 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 13:04:05,392 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 13:04:05,393 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 13:04:05,393 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 13:04:05,393 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 13:04:05,393 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 13:04:05,394 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 13:04:05,394 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 13:04:05,394 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 13:04:05,394 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 13:04:05,394 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 13:04:05,395 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 13:04:05,395 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 13:04:05,395 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 13:04:05,395 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:04:05,395 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 13:04:05,396 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 13:04:05,396 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 13:04:05,396 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 13:04:05,396 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 13:04:05,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 13:04:05,396 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 13:04:05,397 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 13:04:05,397 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 13:04:05,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 13:04:05,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 13:04:05,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 13:04:05,458 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 13:04:05,459 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 13:04:05,459 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label50_true-unreach-call.c [2018-07-24 13:04:05,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c793a9d3a/9a9753281dff45818b76770ecd5f629e/FLAGc0fedabd7 [2018-07-24 13:04:06,281 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 13:04:06,282 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label50_true-unreach-call.c [2018-07-24 13:04:06,322 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c793a9d3a/9a9753281dff45818b76770ecd5f629e/FLAGc0fedabd7 [2018-07-24 13:04:06,344 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c793a9d3a/9a9753281dff45818b76770ecd5f629e [2018-07-24 13:04:06,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 13:04:06,360 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 13:04:06,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 13:04:06,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 13:04:06,377 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 13:04:06,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:04:06" (1/1) ... [2018-07-24 13:04:06,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bfc3286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:06, skipping insertion in model container [2018-07-24 13:04:06,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:04:06" (1/1) ... [2018-07-24 13:04:06,804 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 13:04:07,836 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:04:07,855 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 13:04:08,653 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:04:08,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:08 WrapperNode [2018-07-24 13:04:08,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 13:04:08,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 13:04:08,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 13:04:08,799 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 13:04:08,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:08" (1/1) ... [2018-07-24 13:04:08,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:08" (1/1) ... [2018-07-24 13:04:08,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 13:04:08,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 13:04:08,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 13:04:08,966 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 13:04:09,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:08" (1/1) ... [2018-07-24 13:04:09,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:08" (1/1) ... [2018-07-24 13:04:09,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:08" (1/1) ... [2018-07-24 13:04:09,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:08" (1/1) ... [2018-07-24 13:04:09,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:08" (1/1) ... [2018-07-24 13:04:09,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:08" (1/1) ... [2018-07-24 13:04:09,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:08" (1/1) ... [2018-07-24 13:04:09,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 13:04:09,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 13:04:09,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 13:04:09,556 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 13:04:09,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:04:09,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 13:04:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 13:04:09,623 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 13:04:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 13:04:09,623 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 13:04:09,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 13:04:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 13:04:09,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 13:04:09,624 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 [2018-07-24 13:04:09,624 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 [2018-07-24 13:04:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 13:04:09,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 13:04:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 13:04:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 13:04:22,768 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 13:04:22,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:04:22 BoogieIcfgContainer [2018-07-24 13:04:22,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 13:04:22,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 13:04:22,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 13:04:22,773 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 13:04:22,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 01:04:06" (1/3) ... [2018-07-24 13:04:22,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f23120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:04:22, skipping insertion in model container [2018-07-24 13:04:22,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:08" (2/3) ... [2018-07-24 13:04:22,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f23120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:04:22, skipping insertion in model container [2018-07-24 13:04:22,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:04:22" (3/3) ... [2018-07-24 13:04:22,777 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label50_true-unreach-call.c [2018-07-24 13:04:22,786 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 13:04:22,797 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 13:04:22,857 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 13:04:22,858 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 13:04:22,858 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 13:04:22,858 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 13:04:22,858 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 13:04:22,858 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 13:04:22,859 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 13:04:22,859 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 13:04:22,859 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 13:04:22,908 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-07-24 13:04:22,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2018-07-24 13:04:22,986 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:04:22,989 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:04:22,989 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:04:22,995 INFO L82 PathProgramCache]: Analyzing trace with hash 2045070340, now seen corresponding path program 1 times [2018-07-24 13:04:22,998 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:04:23,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:23,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:23,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:23,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:04:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:24,540 WARN L169 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:04:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:25,637 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:04:25,637 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 13:04:25,637 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:04:25,646 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:04:25,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:04:25,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:04:25,661 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-07-24 13:04:33,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:04:33,256 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-07-24 13:04:33,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:04:33,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 829 [2018-07-24 13:04:33,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:04:33,303 INFO L225 Difference]: With dead ends: 2647 [2018-07-24 13:04:33,303 INFO L226 Difference]: Without dead ends: 1738 [2018-07-24 13:04:33,317 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:04:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-07-24 13:04:33,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-07-24 13:04:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-07-24 13:04:33,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3169 transitions. [2018-07-24 13:04:33,479 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3169 transitions. Word has length 829 [2018-07-24 13:04:33,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:04:33,483 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 3169 transitions. [2018-07-24 13:04:33,483 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:04:33,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3169 transitions. [2018-07-24 13:04:33,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2018-07-24 13:04:33,512 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:04:33,513 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:04:33,513 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:04:33,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1741670847, now seen corresponding path program 1 times [2018-07-24 13:04:33,514 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:04:33,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:33,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:33,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:33,516 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:04:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:35,073 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:04:35,073 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 13:04:35,074 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:04:35,078 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:04:35,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:04:35,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:04:35,078 INFO L87 Difference]: Start difference. First operand 1738 states and 3169 transitions. Second operand 3 states. [2018-07-24 13:04:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:04:42,123 INFO L93 Difference]: Finished difference Result 5140 states and 9494 transitions. [2018-07-24 13:04:42,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:04:42,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 849 [2018-07-24 13:04:42,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:04:42,149 INFO L225 Difference]: With dead ends: 5140 [2018-07-24 13:04:42,150 INFO L226 Difference]: Without dead ends: 3408 [2018-07-24 13:04:42,157 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:04:42,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2018-07-24 13:04:42,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3408. [2018-07-24 13:04:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2018-07-24 13:04:42,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 5874 transitions. [2018-07-24 13:04:42,261 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 5874 transitions. Word has length 849 [2018-07-24 13:04:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:04:42,263 INFO L471 AbstractCegarLoop]: Abstraction has 3408 states and 5874 transitions. [2018-07-24 13:04:42,263 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:04:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 5874 transitions. [2018-07-24 13:04:42,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2018-07-24 13:04:42,284 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:04:42,285 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:04:42,285 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:04:42,286 INFO L82 PathProgramCache]: Analyzing trace with hash -448334779, now seen corresponding path program 1 times [2018-07-24 13:04:42,287 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:04:42,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:42,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:42,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:42,288 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:04:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:42,662 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-07-24 13:04:43,000 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 13:04:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:43,807 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:04:43,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 13:04:43,808 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:04:43,809 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 13:04:43,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 13:04:43,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 13:04:43,810 INFO L87 Difference]: Start difference. First operand 3408 states and 5874 transitions. Second operand 7 states. [2018-07-24 13:04:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:04:54,380 INFO L93 Difference]: Finished difference Result 10532 states and 18932 transitions. [2018-07-24 13:04:54,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 13:04:54,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 851 [2018-07-24 13:04:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:04:54,431 INFO L225 Difference]: With dead ends: 10532 [2018-07-24 13:04:54,432 INFO L226 Difference]: Without dead ends: 7130 [2018-07-24 13:04:54,445 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-07-24 13:04:54,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7130 states. [2018-07-24 13:04:54,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7130 to 6947. [2018-07-24 13:04:54,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6947 states. [2018-07-24 13:04:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6947 states to 6947 states and 11946 transitions. [2018-07-24 13:04:54,706 INFO L78 Accepts]: Start accepts. Automaton has 6947 states and 11946 transitions. Word has length 851 [2018-07-24 13:04:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:04:54,707 INFO L471 AbstractCegarLoop]: Abstraction has 6947 states and 11946 transitions. [2018-07-24 13:04:54,707 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 13:04:54,707 INFO L276 IsEmpty]: Start isEmpty. Operand 6947 states and 11946 transitions. [2018-07-24 13:04:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2018-07-24 13:04:54,743 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:04:54,744 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:04:54,744 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:04:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1111018966, now seen corresponding path program 1 times [2018-07-24 13:04:54,745 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:04:54,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:54,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:54,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:54,747 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:04:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:55,099 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:04:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 13:04:56,020 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:04:56,021 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:04:56,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:56,030 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:04:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:56,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:04:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:57,095 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:04:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:57,947 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:04:57,947 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:04:57,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:57,965 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:04:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:58,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:04:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 13:04:59,600 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:04:59,775 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 13:05:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 13:05:00,684 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 13:05:00,684 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 11 [2018-07-24 13:05:00,685 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:05:00,687 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:05:00,687 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:05:00,687 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 13:05:00,688 INFO L87 Difference]: Start difference. First operand 6947 states and 11946 transitions. Second operand 5 states. [2018-07-24 13:05:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:07,905 INFO L93 Difference]: Finished difference Result 21332 states and 37798 transitions. [2018-07-24 13:05:07,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 13:05:07,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 859 [2018-07-24 13:05:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:07,982 INFO L225 Difference]: With dead ends: 21332 [2018-07-24 13:05:07,982 INFO L226 Difference]: Without dead ends: 14391 [2018-07-24 13:05:08,009 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3443 GetRequests, 3423 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 13:05:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14391 states. [2018-07-24 13:05:08,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14391 to 14389. [2018-07-24 13:05:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14389 states. [2018-07-24 13:05:08,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14389 states to 14389 states and 24066 transitions. [2018-07-24 13:05:08,425 INFO L78 Accepts]: Start accepts. Automaton has 14389 states and 24066 transitions. Word has length 859 [2018-07-24 13:05:08,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:08,426 INFO L471 AbstractCegarLoop]: Abstraction has 14389 states and 24066 transitions. [2018-07-24 13:05:08,426 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:05:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 14389 states and 24066 transitions. [2018-07-24 13:05:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2018-07-24 13:05:08,478 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:08,479 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:05:08,479 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:08,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1426386766, now seen corresponding path program 1 times [2018-07-24 13:05:08,480 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:08,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:08,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:08,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:08,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:08,824 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:05:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 63 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:05:09,783 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:09,784 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:05:09,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:09,792 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:10,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-24 13:05:10,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 63 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:05:11,328 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 13:05:11,329 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 13:05:11,329 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:05:11,330 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:05:11,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:05:11,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-07-24 13:05:11,330 INFO L87 Difference]: Start difference. First operand 14389 states and 24066 transitions. Second operand 5 states. [2018-07-24 13:05:19,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:19,049 INFO L93 Difference]: Finished difference Result 41784 states and 73285 transitions. [2018-07-24 13:05:19,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 13:05:19,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 898 [2018-07-24 13:05:19,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:19,192 INFO L225 Difference]: With dead ends: 41784 [2018-07-24 13:05:19,193 INFO L226 Difference]: Without dead ends: 27401 [2018-07-24 13:05:19,246 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1805 GetRequests, 1790 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-07-24 13:05:19,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27401 states. [2018-07-24 13:05:19,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27401 to 27271. [2018-07-24 13:05:19,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27271 states. [2018-07-24 13:05:19,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27271 states to 27271 states and 43760 transitions. [2018-07-24 13:05:19,952 INFO L78 Accepts]: Start accepts. Automaton has 27271 states and 43760 transitions. Word has length 898 [2018-07-24 13:05:19,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:19,952 INFO L471 AbstractCegarLoop]: Abstraction has 27271 states and 43760 transitions. [2018-07-24 13:05:19,952 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:05:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 27271 states and 43760 transitions. [2018-07-24 13:05:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2018-07-24 13:05:20,039 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:20,040 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:05:20,040 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:20,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1180121604, now seen corresponding path program 1 times [2018-07-24 13:05:20,041 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:20,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:20,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:20,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:20,043 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:20,697 WARN L169 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-07-24 13:05:20,990 WARN L169 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 13:05:21,256 WARN L169 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-07-24 13:05:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 137 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-07-24 13:05:22,576 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:22,576 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:05:22,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:22,589 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:22,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 13:05:23,607 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 137 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-07-24 13:05:24,388 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:24,389 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:05:24,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:24,405 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:25,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 13:05:25,830 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 122 proven. 52 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-07-24 13:05:26,324 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 13:05:26,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5, 5, 5] total 23 [2018-07-24 13:05:26,325 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:05:26,326 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:05:26,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:05:26,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2018-07-24 13:05:26,327 INFO L87 Difference]: Start difference. First operand 27271 states and 43760 transitions. Second operand 5 states. [2018-07-24 13:05:34,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:34,086 INFO L93 Difference]: Finished difference Result 66127 states and 108317 transitions. [2018-07-24 13:05:34,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 13:05:34,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 950 [2018-07-24 13:05:34,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:34,263 INFO L225 Difference]: With dead ends: 66127 [2018-07-24 13:05:34,263 INFO L226 Difference]: Without dead ends: 38862 [2018-07-24 13:05:34,341 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3810 GetRequests, 3788 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2018-07-24 13:05:34,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38862 states. [2018-07-24 13:05:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38862 to 38772. [2018-07-24 13:05:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38772 states. [2018-07-24 13:05:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38772 states to 38772 states and 59519 transitions. [2018-07-24 13:05:35,376 INFO L78 Accepts]: Start accepts. Automaton has 38772 states and 59519 transitions. Word has length 950 [2018-07-24 13:05:35,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:35,376 INFO L471 AbstractCegarLoop]: Abstraction has 38772 states and 59519 transitions. [2018-07-24 13:05:35,376 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:05:35,376 INFO L276 IsEmpty]: Start isEmpty. Operand 38772 states and 59519 transitions. [2018-07-24 13:05:35,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2018-07-24 13:05:35,447 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:35,448 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:05:35,448 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:35,449 INFO L82 PathProgramCache]: Analyzing trace with hash 561505592, now seen corresponding path program 1 times [2018-07-24 13:05:35,449 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:35,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:35,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:35,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:35,450 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:35,858 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:05:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 150 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-24 13:05:37,154 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:37,154 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:05:37,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:37,163 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:37,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:05:38,101 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:05:38,755 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:38,756 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:05:38,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:38,775 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:39,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:05:40,280 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:05:40,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:05:40,738 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 13:05:40,738 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:05:40,741 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 13:05:40,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 13:05:40,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-07-24 13:05:40,742 INFO L87 Difference]: Start difference. First operand 38772 states and 59519 transitions. Second operand 9 states. [2018-07-24 13:05:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:49,750 INFO L93 Difference]: Finished difference Result 88256 states and 139736 transitions. [2018-07-24 13:05:49,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 13:05:49,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 984 [2018-07-24 13:05:49,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:49,966 INFO L225 Difference]: With dead ends: 88256 [2018-07-24 13:05:49,966 INFO L226 Difference]: Without dead ends: 49490 [2018-07-24 13:05:50,057 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3949 GetRequests, 3928 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2018-07-24 13:05:50,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49490 states. [2018-07-24 13:05:51,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49490 to 49162. [2018-07-24 13:05:51,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49162 states. [2018-07-24 13:05:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49162 states to 49162 states and 68939 transitions. [2018-07-24 13:05:51,201 INFO L78 Accepts]: Start accepts. Automaton has 49162 states and 68939 transitions. Word has length 984 [2018-07-24 13:05:51,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:51,202 INFO L471 AbstractCegarLoop]: Abstraction has 49162 states and 68939 transitions. [2018-07-24 13:05:51,202 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 13:05:51,202 INFO L276 IsEmpty]: Start isEmpty. Operand 49162 states and 68939 transitions. [2018-07-24 13:05:51,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2018-07-24 13:05:51,283 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:51,284 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:05:51,285 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:51,285 INFO L82 PathProgramCache]: Analyzing trace with hash 787655809, now seen corresponding path program 1 times [2018-07-24 13:05:51,285 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:51,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:51,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:51,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:51,287 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 182 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 13:05:52,924 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:52,924 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:05:52,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:52,932 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:53,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-24 13:05:54,064 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 182 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 13:05:54,947 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:54,947 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:05:54,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:54,965 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:55,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-24 13:05:56,576 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 182 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 13:05:57,305 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:05:57,307 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 13:05:57,307 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:05:57,309 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 13:05:57,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 13:05:57,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-07-24 13:05:57,310 INFO L87 Difference]: Start difference. First operand 49162 states and 68939 transitions. Second operand 9 states. [2018-07-24 13:06:15,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:06:15,398 INFO L93 Difference]: Finished difference Result 159915 states and 252980 transitions. [2018-07-24 13:06:15,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-24 13:06:15,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1008 [2018-07-24 13:06:15,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:06:15,933 INFO L225 Difference]: With dead ends: 159915 [2018-07-24 13:06:15,933 INFO L226 Difference]: Without dead ends: 110759 [2018-07-24 13:06:16,061 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4088 GetRequests, 4047 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=360, Invalid=1362, Unknown=0, NotChecked=0, Total=1722 [2018-07-24 13:06:16,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110759 states. [2018-07-24 13:06:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110759 to 107039. [2018-07-24 13:06:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107039 states. [2018-07-24 13:06:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107039 states to 107039 states and 140313 transitions. [2018-07-24 13:06:18,778 INFO L78 Accepts]: Start accepts. Automaton has 107039 states and 140313 transitions. Word has length 1008 [2018-07-24 13:06:18,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:06:18,779 INFO L471 AbstractCegarLoop]: Abstraction has 107039 states and 140313 transitions. [2018-07-24 13:06:18,779 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 13:06:18,779 INFO L276 IsEmpty]: Start isEmpty. Operand 107039 states and 140313 transitions. [2018-07-24 13:06:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1271 [2018-07-24 13:06:18,910 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:06:18,911 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:06:18,912 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:06:18,912 INFO L82 PathProgramCache]: Analyzing trace with hash -52401712, now seen corresponding path program 1 times [2018-07-24 13:06:18,912 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:06:18,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:18,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:18,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:18,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:06:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 546 proven. 134 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-07-24 13:06:20,317 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:20,317 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:06:20,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:20,325 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:20,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 627 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-07-24 13:06:21,483 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 546 proven. 134 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-07-24 13:06:22,500 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:22,501 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:06:22,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:22,517 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:23,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:24,593 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 627 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-07-24 13:06:24,594 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 546 proven. 134 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-07-24 13:06:25,283 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:06:25,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 13:06:25,285 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:06:25,287 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 13:06:25,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 13:06:25,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-07-24 13:06:25,288 INFO L87 Difference]: Start difference. First operand 107039 states and 140313 transitions. Second operand 9 states. [2018-07-24 13:06:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:06:49,730 INFO L93 Difference]: Finished difference Result 276663 states and 379485 transitions. [2018-07-24 13:06:49,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-24 13:06:49,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1270 [2018-07-24 13:06:49,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:06:50,418 INFO L225 Difference]: With dead ends: 276663 [2018-07-24 13:06:50,418 INFO L226 Difference]: Without dead ends: 169630 [2018-07-24 13:06:50,626 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5158 GetRequests, 5106 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=539, Invalid=2113, Unknown=0, NotChecked=0, Total=2652 [2018-07-24 13:06:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169630 states. [2018-07-24 13:06:53,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169630 to 168105. [2018-07-24 13:06:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168105 states. [2018-07-24 13:06:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168105 states to 168105 states and 214001 transitions. [2018-07-24 13:06:53,963 INFO L78 Accepts]: Start accepts. Automaton has 168105 states and 214001 transitions. Word has length 1270 [2018-07-24 13:06:53,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:06:53,964 INFO L471 AbstractCegarLoop]: Abstraction has 168105 states and 214001 transitions. [2018-07-24 13:06:53,964 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 13:06:53,964 INFO L276 IsEmpty]: Start isEmpty. Operand 168105 states and 214001 transitions. [2018-07-24 13:06:54,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1476 [2018-07-24 13:06:54,260 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:06:54,264 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:06:54,264 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:06:54,265 INFO L82 PathProgramCache]: Analyzing trace with hash 913389924, now seen corresponding path program 1 times [2018-07-24 13:06:54,265 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:06:54,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:54,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:54,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:54,267 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:06:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:55,185 WARN L169 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 13:06:55,498 WARN L169 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 13:06:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 694 proven. 137 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2018-07-24 13:06:57,130 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:57,130 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:06:57,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:57,138 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:57,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 1116 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-07-24 13:06:58,879 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:07:00,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 858 proven. 179 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2018-07-24 13:07:00,193 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:07:00,193 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:07:00,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:07:00,209 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:07:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:07:01,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:07:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 1116 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-07-24 13:07:02,470 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:07:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 858 proven. 179 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2018-07-24 13:07:03,829 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:07:03,830 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 18 [2018-07-24 13:07:03,830 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:07:03,833 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 13:07:03,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 13:07:03,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-07-24 13:07:03,834 INFO L87 Difference]: Start difference. First operand 168105 states and 214001 transitions. Second operand 10 states. [2018-07-24 13:07:27,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:07:27,568 INFO L93 Difference]: Finished difference Result 379072 states and 510790 transitions. [2018-07-24 13:07:27,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-24 13:07:27,568 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1475 [2018-07-24 13:07:27,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:07:28,747 INFO L225 Difference]: With dead ends: 379072 [2018-07-24 13:07:28,747 INFO L226 Difference]: Without dead ends: 184323 [2018-07-24 13:07:29,181 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5969 GetRequests, 5917 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=512, Invalid=2244, Unknown=0, NotChecked=0, Total=2756 [2018-07-24 13:07:29,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184323 states. [2018-07-24 13:07:32,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184323 to 179888. [2018-07-24 13:07:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179888 states. [2018-07-24 13:07:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179888 states to 179888 states and 202820 transitions. [2018-07-24 13:07:32,919 INFO L78 Accepts]: Start accepts. Automaton has 179888 states and 202820 transitions. Word has length 1475 [2018-07-24 13:07:32,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:07:32,920 INFO L471 AbstractCegarLoop]: Abstraction has 179888 states and 202820 transitions. [2018-07-24 13:07:32,920 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 13:07:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 179888 states and 202820 transitions. [2018-07-24 13:07:33,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1486 [2018-07-24 13:07:33,141 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:07:33,142 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:07:33,142 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:07:33,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1903692976, now seen corresponding path program 1 times [2018-07-24 13:07:33,142 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:07:33,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:07:33,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:07:33,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:07:33,143 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:07:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:07:36,344 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 647 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-07-24 13:07:36,345 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:07:36,345 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 13:07:36,345 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:07:36,346 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 13:07:36,347 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 13:07:36,347 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 13:07:36,347 INFO L87 Difference]: Start difference. First operand 179888 states and 202820 transitions. Second operand 4 states. Received shutdown request... [2018-07-24 13:07:43,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 13:07:43,161 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 13:07:43,166 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 13:07:43,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 01:07:43 BoogieIcfgContainer [2018-07-24 13:07:43,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 13:07:43,168 INFO L168 Benchmark]: Toolchain (without parser) took 216809.26 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -553.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-07-24 13:07:43,169 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 13:07:43,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2433.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 232.5 MB). Peak memory consumption was 232.5 MB. Max. memory is 7.1 GB. [2018-07-24 13:07:43,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 166.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 13:07:43,171 INFO L168 Benchmark]: Boogie Preprocessor took 589.92 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 829.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. [2018-07-24 13:07:43,172 INFO L168 Benchmark]: RCFGBuilder took 13213.51 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 195.6 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -88.4 MB). Peak memory consumption was 731.3 MB. Max. memory is 7.1 GB. [2018-07-24 13:07:43,173 INFO L168 Benchmark]: TraceAbstraction took 200396.77 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 1.0 GB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 376.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-07-24 13:07:43,177 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2433.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 232.5 MB). Peak memory consumption was 232.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 166.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 589.92 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 829.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13213.51 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 195.6 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -88.4 MB). Peak memory consumption was 731.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200396.77 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 1.0 GB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 376.9 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4805]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4805). Cancelled while BasicCegarLoop was constructing difference of abstraction (179888states) and interpolant automaton (currently 4 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (303844 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 200.3s OverallTime, 11 OverallIterations, 7 TraceHistogramMax, 134.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2069 SDtfs, 47064 SDslu, 2832 SDs, 0 SdLazy, 77730 SolverSat, 27582 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28258 GetRequests, 28015 SyntacticMatches, 27 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2099 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179888occurred in iteration=10, 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: 13.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 10413 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.3s SsaConstructionTime, 9.0s SatisfiabilityAnalysisTime, 29.4s InterpolantComputationTime, 25448 NumberOfCodeBlocks, 25448 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 39401 ConstructedInterpolants, 0 QuantifiedInterpolants, 68591785 SizeOfPredicates, 9 NumberOfNonLiveVariables, 19991 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 37 InterpolantComputations, 7 PerfectInterpolantSequences, 14309/15463 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/Problem04_label50_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_13-07-43-191.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label50_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_13-07-43-191.csv Completed graceful shutdown