java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 11:10:31,268 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 11:10:31,270 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 11:10:31,282 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 11:10:31,283 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 11:10:31,284 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 11:10:31,285 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 11:10:31,287 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 11:10:31,288 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 11:10:31,289 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 11:10:31,290 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 11:10:31,290 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 11:10:31,291 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 11:10:31,292 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 11:10:31,293 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 11:10:31,294 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 11:10:31,295 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 11:10:31,296 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 11:10:31,298 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 11:10:31,300 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 11:10:31,301 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 11:10:31,302 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 11:10:31,304 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 11:10:31,305 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 11:10:31,305 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 11:10:31,306 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 11:10:31,308 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 11:10:31,309 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 11:10:31,310 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 11:10:31,311 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 11:10:31,311 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 11:10:31,312 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 11:10:31,312 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 11:10:31,312 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 11:10:31,313 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 11:10:31,314 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 11:10:31,314 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 [2018-08-07 11:10:31,329 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 11:10:31,329 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 11:10:31,330 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 11:10:31,330 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 11:10:31,331 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 11:10:31,331 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 11:10:31,331 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 11:10:31,331 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 11:10:31,331 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 11:10:31,332 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 11:10:31,332 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 11:10:31,333 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 11:10:31,333 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 11:10:31,333 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 11:10:31,333 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 11:10:31,333 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 11:10:31,334 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 11:10:31,334 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 11:10:31,334 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 11:10:31,334 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 11:10:31,334 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 11:10:31,335 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 11:10:31,335 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 11:10:31,335 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 11:10:31,335 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 11:10:31,335 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 11:10:31,336 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 11:10:31,336 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 11:10:31,336 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 11:10:31,336 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 11:10:31,336 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 11:10:31,336 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 11:10:31,337 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 11:10:31,379 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 11:10:31,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 11:10:31,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 11:10:31,398 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 11:10:31,398 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 11:10:31,399 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label16_true-unreach-call.c [2018-08-07 11:10:31,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19885ed37/c82eaad56b404a978dd3450481840b88/FLAGbd3c0d7a3 [2018-08-07 11:10:32,242 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 11:10:32,245 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label16_true-unreach-call.c [2018-08-07 11:10:32,284 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19885ed37/c82eaad56b404a978dd3450481840b88/FLAGbd3c0d7a3 [2018-08-07 11:10:32,306 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19885ed37/c82eaad56b404a978dd3450481840b88 [2018-08-07 11:10:32,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 11:10:32,322 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 11:10:32,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 11:10:32,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 11:10:32,334 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 11:10:32,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 11:10:32" (1/1) ... [2018-08-07 11:10:32,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9e394b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:32, skipping insertion in model container [2018-08-07 11:10:32,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 11:10:32" (1/1) ... [2018-08-07 11:10:32,692 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 11:10:33,791 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 11:10:33,809 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 11:10:34,536 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 11:10:34,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:34 WrapperNode [2018-08-07 11:10:34,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 11:10:34,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 11:10:34,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 11:10:34,697 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 11:10:34,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:34" (1/1) ... [2018-08-07 11:10:34,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:34" (1/1) ... [2018-08-07 11:10:34,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 11:10:34,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 11:10:34,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 11:10:34,848 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 11:10:35,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:34" (1/1) ... [2018-08-07 11:10:35,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:34" (1/1) ... [2018-08-07 11:10:35,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:34" (1/1) ... [2018-08-07 11:10:35,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:34" (1/1) ... [2018-08-07 11:10:35,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:34" (1/1) ... [2018-08-07 11:10:35,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:34" (1/1) ... [2018-08-07 11:10:35,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:34" (1/1) ... [2018-08-07 11:10:35,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 11:10:35,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 11:10:35,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 11:10:35,455 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 11:10:35,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:34" (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 [2018-08-07 11:10:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 11:10:35,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 11:10:35,528 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 [2018-08-07 11:10:35,528 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 [2018-08-07 11:10:35,528 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 [2018-08-07 11:10:35,528 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 [2018-08-07 11:10:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 11:10:35,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 11:10:35,529 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 [2018-08-07 11:10:35,529 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 [2018-08-07 11:10:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 11:10:35,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 11:10:35,529 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 [2018-08-07 11:10:35,530 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 [2018-08-07 11:10:47,263 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 11:10:47,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 11:10:47 BoogieIcfgContainer [2018-08-07 11:10:47,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 11:10:47,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 11:10:47,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 11:10:47,268 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 11:10:47,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 11:10:32" (1/3) ... [2018-08-07 11:10:47,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e8c6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 11:10:47, skipping insertion in model container [2018-08-07 11:10:47,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 11:10:34" (2/3) ... [2018-08-07 11:10:47,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e8c6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 11:10:47, skipping insertion in model container [2018-08-07 11:10:47,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 11:10:47" (3/3) ... [2018-08-07 11:10:47,271 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label16_true-unreach-call.c [2018-08-07 11:10:47,281 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 11:10:47,291 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 11:10:47,355 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 11:10:47,356 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 11:10:47,356 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 11:10:47,357 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 11:10:47,357 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 11:10:47,357 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 11:10:47,357 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 11:10:47,357 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 11:10:47,357 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 11:10:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-08-07 11:10:47,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-08-07 11:10:47,457 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:10:47,459 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:10:47,460 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:10:47,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1129925684, now seen corresponding path program 1 times [2018-08-07 11:10:47,469 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:10:47,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:10:47,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:10:47,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:10:47,524 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:10:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:10:49,166 WARN L170 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:10:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:10:50,234 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:10:50,234 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 11:10:50,234 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:10:50,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:10:50,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:10:50,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:10:50,261 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-08-07 11:10:57,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:10:57,952 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-08-07 11:10:57,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:10:57,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 812 [2018-08-07 11:10:57,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:10:57,991 INFO L225 Difference]: With dead ends: 2647 [2018-08-07 11:10:57,991 INFO L226 Difference]: Without dead ends: 1738 [2018-08-07 11:10:58,003 INFO L603 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 [2018-08-07 11:10:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-08-07 11:10:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-08-07 11:10:58,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-08-07 11:10:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3169 transitions. [2018-08-07 11:10:58,168 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3169 transitions. Word has length 812 [2018-08-07 11:10:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:10:58,171 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3169 transitions. [2018-08-07 11:10:58,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:10:58,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3169 transitions. [2018-08-07 11:10:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2018-08-07 11:10:58,203 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:10:58,205 INFO L376 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] [2018-08-07 11:10:58,205 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:10:58,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1138773079, now seen corresponding path program 1 times [2018-08-07 11:10:58,206 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:10:58,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:10:58,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:10:58,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:10:58,208 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:10:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:10:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:10:59,514 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:10:59,514 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 11:10:59,514 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:10:59,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 11:10:59,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 11:10:59,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 11:10:59,518 INFO L87 Difference]: Start difference. First operand 1738 states and 3169 transitions. Second operand 3 states. [2018-08-07 11:11:06,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:11:06,274 INFO L93 Difference]: Finished difference Result 5140 states and 9494 transitions. [2018-08-07 11:11:06,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 11:11:06,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 832 [2018-08-07 11:11:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:11:06,299 INFO L225 Difference]: With dead ends: 5140 [2018-08-07 11:11:06,299 INFO L226 Difference]: Without dead ends: 3408 [2018-08-07 11:11:06,306 INFO L603 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 [2018-08-07 11:11:06,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2018-08-07 11:11:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3408. [2018-08-07 11:11:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2018-08-07 11:11:06,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 5874 transitions. [2018-08-07 11:11:06,405 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 5874 transitions. Word has length 832 [2018-08-07 11:11:06,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:11:06,407 INFO L480 AbstractCegarLoop]: Abstraction has 3408 states and 5874 transitions. [2018-08-07 11:11:06,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 11:11:06,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 5874 transitions. [2018-08-07 11:11:06,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2018-08-07 11:11:06,427 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:11:06,428 INFO L376 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] [2018-08-07 11:11:06,428 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:11:06,429 INFO L82 PathProgramCache]: Analyzing trace with hash 643970515, now seen corresponding path program 1 times [2018-08-07 11:11:06,429 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:11:06,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:11:06,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:11:06,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:11:06,431 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:11:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:11:06,897 WARN L170 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-08-07 11:11:07,240 WARN L170 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-08-07 11:11:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:11:07,910 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 11:11:07,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-08-07 11:11:07,910 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:11:07,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-08-07 11:11:07,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-08-07 11:11:07,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-08-07 11:11:07,914 INFO L87 Difference]: Start difference. First operand 3408 states and 5874 transitions. Second operand 7 states. [2018-08-07 11:11:08,154 WARN L170 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-08-07 11:11:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:11:20,147 INFO L93 Difference]: Finished difference Result 10532 states and 18932 transitions. [2018-08-07 11:11:20,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-08-07 11:11:20,148 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 834 [2018-08-07 11:11:20,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:11:20,193 INFO L225 Difference]: With dead ends: 10532 [2018-08-07 11:11:20,194 INFO L226 Difference]: Without dead ends: 7130 [2018-08-07 11:11:20,205 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:11:20,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7130 states. [2018-08-07 11:11:20,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7130 to 6947. [2018-08-07 11:11:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6947 states. [2018-08-07 11:11:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6947 states to 6947 states and 11946 transitions. [2018-08-07 11:11:20,464 INFO L78 Accepts]: Start accepts. Automaton has 6947 states and 11946 transitions. Word has length 834 [2018-08-07 11:11:20,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:11:20,465 INFO L480 AbstractCegarLoop]: Abstraction has 6947 states and 11946 transitions. [2018-08-07 11:11:20,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-08-07 11:11:20,465 INFO L276 IsEmpty]: Start isEmpty. Operand 6947 states and 11946 transitions. [2018-08-07 11:11:20,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2018-08-07 11:11:20,495 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:11:20,496 INFO L376 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] [2018-08-07 11:11:20,496 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:11:20,496 INFO L82 PathProgramCache]: Analyzing trace with hash 863010126, now seen corresponding path program 1 times [2018-08-07 11:11:20,497 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:11:20,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:11:20,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:11:20,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:11:20,498 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:11:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:11:20,828 WARN L170 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:11:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-08-07 11:11:21,790 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:11:21,791 INFO L194 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 [2018-08-07 11:11:21,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:11:21,810 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:11:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:11:22,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:11:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:11:22,808 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:11:23,087 WARN L170 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-08-07 11:11:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 11:11:23,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:11:23,904 INFO L194 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 [2018-08-07 11:11:23,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:11:23,921 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:11:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:11:24,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:11:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-08-07 11:11:25,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:11:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-08-07 11:11:26,159 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-08-07 11:11:26,161 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 11 [2018-08-07 11:11:26,161 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:11:26,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:11:26,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:11:26,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-08-07 11:11:26,163 INFO L87 Difference]: Start difference. First operand 6947 states and 11946 transitions. Second operand 5 states. [2018-08-07 11:11:33,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:11:33,795 INFO L93 Difference]: Finished difference Result 21332 states and 37798 transitions. [2018-08-07 11:11:33,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 11:11:33,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 842 [2018-08-07 11:11:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:11:33,872 INFO L225 Difference]: With dead ends: 21332 [2018-08-07 11:11:33,872 INFO L226 Difference]: Without dead ends: 14391 [2018-08-07 11:11:33,898 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 3375 GetRequests, 3355 SyntacticMatches, 10 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:11:33,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14391 states. [2018-08-07 11:11:34,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14391 to 14389. [2018-08-07 11:11:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14389 states. [2018-08-07 11:11:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14389 states to 14389 states and 24066 transitions. [2018-08-07 11:11:34,297 INFO L78 Accepts]: Start accepts. Automaton has 14389 states and 24066 transitions. Word has length 842 [2018-08-07 11:11:34,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:11:34,297 INFO L480 AbstractCegarLoop]: Abstraction has 14389 states and 24066 transitions. [2018-08-07 11:11:34,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:11:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 14389 states and 24066 transitions. [2018-08-07 11:11:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2018-08-07 11:11:34,352 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:11:34,353 INFO L376 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] [2018-08-07 11:11:34,353 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:11:34,353 INFO L82 PathProgramCache]: Analyzing trace with hash -587938902, now seen corresponding path program 1 times [2018-08-07 11:11:34,354 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:11:34,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:11:34,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:11:34,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:11:34,355 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:11:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:11:34,719 WARN L170 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:11:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 63 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:11:35,754 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:11:35,754 INFO L194 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 [2018-08-07 11:11:35,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:11:35,769 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:11:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:11:36,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:11:37,029 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-08-07 11:11:37,031 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:11:37,241 WARN L170 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-08-07 11:11:37,346 WARN L170 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-08-07 11:11:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 63 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:11:38,464 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:11:38,465 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-08-07 11:11:38,465 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:11:38,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:11:38,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:11:38,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-08-07 11:11:38,467 INFO L87 Difference]: Start difference. First operand 14389 states and 24066 transitions. Second operand 5 states. [2018-08-07 11:11:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:11:45,902 INFO L93 Difference]: Finished difference Result 41784 states and 73285 transitions. [2018-08-07 11:11:45,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 11:11:45,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 881 [2018-08-07 11:11:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:11:46,018 INFO L225 Difference]: With dead ends: 41784 [2018-08-07 11:11:46,018 INFO L226 Difference]: Without dead ends: 27401 [2018-08-07 11:11:46,075 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1771 GetRequests, 1756 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-08-07 11:11:46,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27401 states. [2018-08-07 11:11:46,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27401 to 27271. [2018-08-07 11:11:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27271 states. [2018-08-07 11:11:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27271 states to 27271 states and 43760 transitions. [2018-08-07 11:11:46,800 INFO L78 Accepts]: Start accepts. Automaton has 27271 states and 43760 transitions. Word has length 881 [2018-08-07 11:11:46,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:11:46,801 INFO L480 AbstractCegarLoop]: Abstraction has 27271 states and 43760 transitions. [2018-08-07 11:11:46,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:11:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 27271 states and 43760 transitions. [2018-08-07 11:11:46,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2018-08-07 11:11:46,887 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:11:46,888 INFO L376 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] [2018-08-07 11:11:46,888 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:11:46,894 INFO L82 PathProgramCache]: Analyzing trace with hash 88195900, now seen corresponding path program 1 times [2018-08-07 11:11:46,894 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:11:46,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:11:46,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:11:46,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:11:46,896 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:11:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:11:47,563 WARN L170 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-08-07 11:11:47,849 WARN L170 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-08-07 11:11:48,107 WARN L170 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-08-07 11:11:49,014 WARN L170 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-08-07 11:11:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 137 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-08-07 11:11:50,152 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:11:50,152 INFO L194 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 [2018-08-07 11:11:50,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:11:50,164 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:11:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:11:50,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:11:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-08-07 11:11:51,591 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:11:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 137 proven. 38 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-08-07 11:11:52,365 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:11:52,365 INFO L194 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 [2018-08-07 11:11:52,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:11:52,383 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:11:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:11:53,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:11:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-08-07 11:11:54,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:11:54,846 WARN L170 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-08-07 11:11:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 122 proven. 52 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-08-07 11:11:56,276 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-08-07 11:11:56,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5, 5, 5] total 23 [2018-08-07 11:11:56,277 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:11:56,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:11:56,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:11:56,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2018-08-07 11:11:56,280 INFO L87 Difference]: Start difference. First operand 27271 states and 43760 transitions. Second operand 5 states. [2018-08-07 11:12:04,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:12:04,522 INFO L93 Difference]: Finished difference Result 66127 states and 108317 transitions. [2018-08-07 11:12:04,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 11:12:04,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 933 [2018-08-07 11:12:04,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:12:04,666 INFO L225 Difference]: With dead ends: 66127 [2018-08-07 11:12:04,666 INFO L226 Difference]: Without dead ends: 38862 [2018-08-07 11:12:04,745 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 3742 GetRequests, 3720 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2018-08-07 11:12:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38862 states. [2018-08-07 11:12:05,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38862 to 38772. [2018-08-07 11:12:05,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38772 states. [2018-08-07 11:12:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38772 states to 38772 states and 59519 transitions. [2018-08-07 11:12:05,636 INFO L78 Accepts]: Start accepts. Automaton has 38772 states and 59519 transitions. Word has length 933 [2018-08-07 11:12:05,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:12:05,637 INFO L480 AbstractCegarLoop]: Abstraction has 38772 states and 59519 transitions. [2018-08-07 11:12:05,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:12:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand 38772 states and 59519 transitions. [2018-08-07 11:12:05,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2018-08-07 11:12:05,702 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:12:05,703 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 11:12:05,703 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:12:05,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1480493306, now seen corresponding path program 1 times [2018-08-07 11:12:05,704 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:12:05,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:12:05,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:12:05,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:12:05,705 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:12:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:12:06,099 WARN L170 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 11:12:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 145 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:12:07,325 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:12:07,325 INFO L194 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 [2018-08-07 11:12:07,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:12:07,342 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:12:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:12:07,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:12:08,809 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-08-07 11:12:08,809 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:12:09,667 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 145 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:12:09,688 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 11:12:09,689 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-08-07 11:12:09,689 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 11:12:09,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 11:12:09,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 11:12:09,691 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-08-07 11:12:09,691 INFO L87 Difference]: Start difference. First operand 38772 states and 59519 transitions. Second operand 5 states. [2018-08-07 11:12:16,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:12:16,527 INFO L93 Difference]: Finished difference Result 88130 states and 138476 transitions. [2018-08-07 11:12:16,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 11:12:16,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 963 [2018-08-07 11:12:16,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:12:16,703 INFO L225 Difference]: With dead ends: 88130 [2018-08-07 11:12:16,703 INFO L226 Difference]: Without dead ends: 49364 [2018-08-07 11:12:16,779 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1933 GetRequests, 1920 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-08-07 11:12:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49364 states. [2018-08-07 11:12:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49364 to 49142. [2018-08-07 11:12:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49142 states. [2018-08-07 11:12:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49142 states to 49142 states and 68864 transitions. [2018-08-07 11:12:17,749 INFO L78 Accepts]: Start accepts. Automaton has 49142 states and 68864 transitions. Word has length 963 [2018-08-07 11:12:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:12:17,750 INFO L480 AbstractCegarLoop]: Abstraction has 49142 states and 68864 transitions. [2018-08-07 11:12:17,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 11:12:17,750 INFO L276 IsEmpty]: Start isEmpty. Operand 49142 states and 68864 transitions. [2018-08-07 11:12:17,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2018-08-07 11:12:17,820 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:12:17,820 INFO L376 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] [2018-08-07 11:12:17,821 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:12:17,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1928229353, now seen corresponding path program 1 times [2018-08-07 11:12:17,821 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:12:17,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:12:17,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:12:17,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:12:17,822 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:12:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:12:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 182 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-08-07 11:12:18,887 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:12:18,887 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:12:18,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:12:18,896 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:12:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:12:19,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:12:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-08-07 11:12:19,895 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:12:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 182 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-08-07 11:12:20,689 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:12:20,689 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:12:20,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:12:20,705 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:12:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:12:21,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:12:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-08-07 11:12:22,466 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:12:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 182 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-08-07 11:12:23,066 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:12:23,067 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-08-07 11:12:23,067 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:12:23,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:12:23,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:12:23,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-08-07 11:12:23,069 INFO L87 Difference]: Start difference. First operand 49142 states and 68864 transitions. Second operand 9 states. [2018-08-07 11:12:40,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:12:40,840 INFO L93 Difference]: Finished difference Result 160735 states and 254279 transitions. [2018-08-07 11:12:40,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-08-07 11:12:40,842 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 991 [2018-08-07 11:12:40,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:12:41,364 INFO L225 Difference]: With dead ends: 160735 [2018-08-07 11:12:41,364 INFO L226 Difference]: Without dead ends: 111599 [2018-08-07 11:12:41,474 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 4020 GetRequests, 3979 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=360, Invalid=1362, Unknown=0, NotChecked=0, Total=1722 [2018-08-07 11:12:41,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111599 states. [2018-08-07 11:12:43,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111599 to 107901. [2018-08-07 11:12:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107901 states. [2018-08-07 11:12:43,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107901 states to 107901 states and 141297 transitions. [2018-08-07 11:12:43,926 INFO L78 Accepts]: Start accepts. Automaton has 107901 states and 141297 transitions. Word has length 991 [2018-08-07 11:12:43,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:12:43,927 INFO L480 AbstractCegarLoop]: Abstraction has 107901 states and 141297 transitions. [2018-08-07 11:12:43,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:12:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 107901 states and 141297 transitions. [2018-08-07 11:12:44,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1254 [2018-08-07 11:12:44,043 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:12:44,044 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-08-07 11:12:44,044 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:12:44,045 INFO L82 PathProgramCache]: Analyzing trace with hash 489499880, now seen corresponding path program 1 times [2018-08-07 11:12:44,045 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:12:44,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:12:44,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:12:44,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:12:44,046 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:12:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:12:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 546 proven. 134 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-08-07 11:12:45,657 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:12:45,657 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:12:45,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:12:45,668 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:12:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:12:46,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:12:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 627 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-08-07 11:12:47,268 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:12:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 546 proven. 134 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-08-07 11:12:48,056 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:12:48,056 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:12:48,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:12:48,073 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:12:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:12:49,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:12:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 627 proven. 2 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-08-07 11:12:50,342 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:12:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 546 proven. 134 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-08-07 11:12:51,480 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:12:51,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-08-07 11:12:51,482 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:12:51,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 11:12:51,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 11:12:51,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-08-07 11:12:51,484 INFO L87 Difference]: Start difference. First operand 107901 states and 141297 transitions. Second operand 9 states. [2018-08-07 11:13:15,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:13:15,591 INFO L93 Difference]: Finished difference Result 278375 states and 381590 transitions. [2018-08-07 11:13:15,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-08-07 11:13:15,592 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1253 [2018-08-07 11:13:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:13:16,091 INFO L225 Difference]: With dead ends: 278375 [2018-08-07 11:13:16,091 INFO L226 Difference]: Without dead ends: 170480 [2018-08-07 11:13:16,236 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 5090 GetRequests, 5038 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=539, Invalid=2113, Unknown=0, NotChecked=0, Total=2652 [2018-08-07 11:13:16,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170480 states. [2018-08-07 11:13:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170480 to 168950. [2018-08-07 11:13:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168950 states. [2018-08-07 11:13:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168950 states to 168950 states and 215091 transitions. [2018-08-07 11:13:19,234 INFO L78 Accepts]: Start accepts. Automaton has 168950 states and 215091 transitions. Word has length 1253 [2018-08-07 11:13:19,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:13:19,235 INFO L480 AbstractCegarLoop]: Abstraction has 168950 states and 215091 transitions. [2018-08-07 11:13:19,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 11:13:19,235 INFO L276 IsEmpty]: Start isEmpty. Operand 168950 states and 215091 transitions. [2018-08-07 11:13:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1459 [2018-08-07 11:13:19,531 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:13:19,532 INFO L376 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] [2018-08-07 11:13:19,532 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:13:19,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1144294700, now seen corresponding path program 1 times [2018-08-07 11:13:19,532 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:13:19,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:13:19,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:19,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:13:19,534 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:13:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 694 proven. 137 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2018-08-07 11:13:21,396 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:13:21,396 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:13:21,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:21,404 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:13:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:22,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:13:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 1116 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-08-07 11:13:23,554 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:13:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 858 proven. 179 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2018-08-07 11:13:25,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:13:25,141 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 11:13:25,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:25,157 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:13:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:13:26,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:13:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 1116 proven. 2 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2018-08-07 11:13:27,303 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 11:13:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1407 backedges. 858 proven. 179 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2018-08-07 11:13:28,596 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 11:13:28,597 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 18 [2018-08-07 11:13:28,597 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 11:13:28,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-08-07 11:13:28,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-08-07 11:13:28,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-08-07 11:13:28,599 INFO L87 Difference]: Start difference. First operand 168950 states and 215091 transitions. Second operand 10 states. [2018-08-07 11:13:52,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 11:13:52,188 INFO L93 Difference]: Finished difference Result 380797 states and 513295 transitions. [2018-08-07 11:13:52,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-08-07 11:13:52,189 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1458 [2018-08-07 11:13:52,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 11:13:53,025 INFO L225 Difference]: With dead ends: 380797 [2018-08-07 11:13:53,025 INFO L226 Difference]: Without dead ends: 184319 [2018-08-07 11:13:53,495 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 5901 GetRequests, 5849 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=512, Invalid=2244, Unknown=0, NotChecked=0, Total=2756 [2018-08-07 11:13:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184319 states. [2018-08-07 11:13:56,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184319 to 179887. [2018-08-07 11:13:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179887 states. [2018-08-07 11:13:57,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179887 states to 179887 states and 202816 transitions. [2018-08-07 11:13:57,033 INFO L78 Accepts]: Start accepts. Automaton has 179887 states and 202816 transitions. Word has length 1458 [2018-08-07 11:13:57,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 11:13:57,033 INFO L480 AbstractCegarLoop]: Abstraction has 179887 states and 202816 transitions. [2018-08-07 11:13:57,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-08-07 11:13:57,033 INFO L276 IsEmpty]: Start isEmpty. Operand 179887 states and 202816 transitions. [2018-08-07 11:13:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1482 [2018-08-07 11:13:57,193 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 11:13:57,193 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 11:13:57,194 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 11:13:57,194 INFO L82 PathProgramCache]: Analyzing trace with hash 736685491, now seen corresponding path program 1 times [2018-08-07 11:13:57,194 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 11:13:57,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:13:57,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:13:57,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 11:13:57,196 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 11:13:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-08-07 11:14:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 660 proven. 343 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 11:14:04,406 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 11:14:04,406 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:14:04,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 11:14:04,414 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 11:14:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 11:14:04,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 11:14:05,000 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-08-07 11:14:05,201 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 11:14:05,201 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 11:14:05,207 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 11:14:05,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 11:14:05 BoogieIcfgContainer [2018-08-07 11:14:05,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 11:14:05,209 INFO L168 Benchmark]: Toolchain (without parser) took 212889.47 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-08-07 11:14:05,210 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-08-07 11:14:05,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2373.21 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: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-08-07 11:14:05,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 150.49 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. [2018-08-07 11:14:05,212 INFO L168 Benchmark]: Boogie Preprocessor took 606.63 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.2 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. [2018-08-07 11:14:05,213 INFO L168 Benchmark]: RCFGBuilder took 11809.06 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 152.6 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -22.2 MB). Peak memory consumption was 703.2 MB. Max. memory is 7.1 GB. [2018-08-07 11:14:05,214 INFO L168 Benchmark]: TraceAbstraction took 197943.51 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: -678.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-08-07 11:14:05,219 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2373.21 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: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 150.49 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 606.63 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.2 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 11809.06 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 152.6 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -22.2 MB). Peak memory consumption was 703.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 197943.51 ms. Allocated memory was 2.6 GB in the beginning and 5.0 GB in the end (delta: 2.4 GB). Free memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: -678.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4754]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4754). Cancelled while BasicCegarLoop was analyzing trace of length 1482 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 10 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 197.8s OverallTime, 11 OverallIterations, 7 TraceHistogramMax, 125.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1915 SDtfs, 44188 SDslu, 2627 SDs, 0 SdLazy, 71387 SolverSat, 26479 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25860 GetRequests, 25627 SyntacticMatches, 27 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2055 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179887occurred 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: 12.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 10287 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.3s SsaConstructionTime, 8.2s SatisfiabilityAnalysisTime, 32.4s InterpolantComputationTime, 22597 NumberOfCodeBlocks, 22597 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 35361 ConstructedInterpolants, 0 QuantifiedInterpolants, 61359974 SizeOfPredicates, 10 NumberOfNonLiveVariables, 18421 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 34 InterpolantComputations, 7 PerfectInterpolantSequences, 13214/14365 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_label16_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_11-14-05-236.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label16_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_11-14-05-236.csv Completed graceful shutdown