java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 13:04:30,247 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 13:04:30,249 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 13:04:30,261 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 13:04:30,261 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 13:04:30,262 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 13:04:30,264 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 13:04:30,265 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 13:04:30,267 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 13:04:30,268 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 13:04:30,269 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 13:04:30,269 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 13:04:30,270 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 13:04:30,271 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 13:04:30,272 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 13:04:30,273 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 13:04:30,274 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 13:04:30,276 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 13:04:30,277 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 13:04:30,279 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 13:04:30,280 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 13:04:30,281 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 13:04:30,284 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 13:04:30,284 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 13:04:30,284 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 13:04:30,285 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 13:04:30,286 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 13:04:30,287 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 13:04:30,288 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 13:04:30,289 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 13:04:30,289 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 13:04:30,290 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 13:04:30,290 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 13:04:30,291 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 13:04:30,292 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 13:04:30,293 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 13:04:30,293 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 13:04:30,311 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 13:04:30,312 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 13:04:30,313 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 13:04:30,313 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 13:04:30,313 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 13:04:30,313 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 13:04:30,313 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 13:04:30,313 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 13:04:30,314 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 13:04:30,314 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 13:04:30,314 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 13:04:30,315 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 13:04:30,315 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 13:04:30,315 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 13:04:30,315 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 13:04:30,315 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 13:04:30,316 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 13:04:30,316 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 13:04:30,316 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 13:04:30,316 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 13:04:30,316 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 13:04:30,317 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 13:04:30,317 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 13:04:30,317 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:04:30,317 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 13:04:30,317 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 13:04:30,318 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 13:04:30,318 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 13:04:30,318 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 13:04:30,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 13:04:30,318 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 13:04:30,318 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 13:04:30,319 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 13:04:30,360 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 13:04:30,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 13:04:30,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 13:04:30,387 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 13:04:30,387 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 13:04:30,388 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label54_true-unreach-call.c [2018-07-24 13:04:30,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45684241b/7e2aa4f6ef16473a8a90e1a262a77dd5/FLAG1a1ff7c1c [2018-07-24 13:04:31,214 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 13:04:31,215 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label54_true-unreach-call.c [2018-07-24 13:04:31,255 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45684241b/7e2aa4f6ef16473a8a90e1a262a77dd5/FLAG1a1ff7c1c [2018-07-24 13:04:31,275 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45684241b/7e2aa4f6ef16473a8a90e1a262a77dd5 [2018-07-24 13:04:31,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 13:04:31,289 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 13:04:31,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 13:04:31,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 13:04:31,301 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 13:04:31,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:04:31" (1/1) ... [2018-07-24 13:04:31,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a088d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:31, skipping insertion in model container [2018-07-24 13:04:31,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:04:31" (1/1) ... [2018-07-24 13:04:31,693 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 13:04:32,779 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:04:32,797 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 13:04:33,467 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:04:33,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:33 WrapperNode [2018-07-24 13:04:33,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 13:04:33,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 13:04:33,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 13:04:33,619 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 13:04:33,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:33" (1/1) ... [2018-07-24 13:04:33,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:33" (1/1) ... [2018-07-24 13:04:33,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 13:04:33,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 13:04:33,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 13:04:33,776 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 13:04:33,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:33" (1/1) ... [2018-07-24 13:04:33,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:33" (1/1) ... [2018-07-24 13:04:33,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:33" (1/1) ... [2018-07-24 13:04:33,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:33" (1/1) ... [2018-07-24 13:04:34,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:33" (1/1) ... [2018-07-24 13:04:34,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:33" (1/1) ... [2018-07-24 13:04:34,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:33" (1/1) ... [2018-07-24 13:04:34,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 13:04:34,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 13:04:34,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 13:04:34,492 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 13:04:34,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:04:34,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 13:04:34,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 13:04:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 13:04:34,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 13:04:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 13:04:34,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 13:04:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 13:04:34,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 13:04:34,575 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 13:04:34,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 13:04:34,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 13:04:34,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 13:04:34,576 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 13:04:34,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 13:04:46,855 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 13:04:46,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:04:46 BoogieIcfgContainer [2018-07-24 13:04:46,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 13:04:46,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 13:04:46,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 13:04:46,861 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 13:04:46,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 01:04:31" (1/3) ... [2018-07-24 13:04:46,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554cd973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:04:46, skipping insertion in model container [2018-07-24 13:04:46,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:04:33" (2/3) ... [2018-07-24 13:04:46,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554cd973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:04:46, skipping insertion in model container [2018-07-24 13:04:46,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:04:46" (3/3) ... [2018-07-24 13:04:46,864 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label54_true-unreach-call.c [2018-07-24 13:04:46,873 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 13:04:46,882 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 13:04:46,940 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 13:04:46,941 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 13:04:46,941 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 13:04:46,942 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 13:04:46,942 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 13:04:46,942 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 13:04:46,942 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 13:04:46,942 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 13:04:46,942 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 13:04:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-07-24 13:04:47,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2018-07-24 13:04:47,031 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:04:47,034 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:04:47,034 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:04:47,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1748193748, now seen corresponding path program 1 times [2018-07-24 13:04:47,043 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:04:47,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:47,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:47,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:47,101 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:04:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:48,560 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:04:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:49,567 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:04:49,568 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 13:04:49,568 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:04:49,576 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:04:49,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:04:49,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:04:49,594 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-07-24 13:04:56,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:04:56,202 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-07-24 13:04:56,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:04:56,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 817 [2018-07-24 13:04:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:04:56,242 INFO L225 Difference]: With dead ends: 2647 [2018-07-24 13:04:56,243 INFO L226 Difference]: Without dead ends: 1738 [2018-07-24 13:04:56,252 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:04:56,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-07-24 13:04:56,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-07-24 13:04:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-07-24 13:04:56,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3151 transitions. [2018-07-24 13:04:56,418 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3151 transitions. Word has length 817 [2018-07-24 13:04:56,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:04:56,425 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 3151 transitions. [2018-07-24 13:04:56,425 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:04:56,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3151 transitions. [2018-07-24 13:04:56,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2018-07-24 13:04:56,463 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:04:56,464 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:04:56,464 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:04:56,466 INFO L82 PathProgramCache]: Analyzing trace with hash -2065197871, now seen corresponding path program 1 times [2018-07-24 13:04:56,467 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:04:56,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:56,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:56,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:56,469 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:04:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:57,691 WARN L169 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-07-24 13:04:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:58,525 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:04:58,526 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 13:04:58,526 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:04:58,529 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:04:58,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:04:58,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 13:04:58,530 INFO L87 Difference]: Start difference. First operand 1738 states and 3151 transitions. Second operand 5 states. [2018-07-24 13:05:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:12,513 INFO L93 Difference]: Finished difference Result 6810 states and 12604 transitions. [2018-07-24 13:05:12,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 13:05:12,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 826 [2018-07-24 13:05:12,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:12,543 INFO L225 Difference]: With dead ends: 6810 [2018-07-24 13:05:12,544 INFO L226 Difference]: Without dead ends: 5078 [2018-07-24 13:05:12,551 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 13:05:12,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2018-07-24 13:05:12,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 5078. [2018-07-24 13:05:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5078 states. [2018-07-24 13:05:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 8809 transitions. [2018-07-24 13:05:12,707 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 8809 transitions. Word has length 826 [2018-07-24 13:05:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:12,710 INFO L471 AbstractCegarLoop]: Abstraction has 5078 states and 8809 transitions. [2018-07-24 13:05:12,710 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:05:12,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 8809 transitions. [2018-07-24 13:05:12,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2018-07-24 13:05:12,739 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:12,740 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 13:05:12,740 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:12,741 INFO L82 PathProgramCache]: Analyzing trace with hash -116134915, now seen corresponding path program 1 times [2018-07-24 13:05:12,741 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:12,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:12,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:12,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:12,743 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:13,248 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:05:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:05:13,788 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:05:13,788 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 13:05:13,788 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:05:13,790 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 13:05:13,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 13:05:13,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 13:05:13,790 INFO L87 Difference]: Start difference. First operand 5078 states and 8809 transitions. Second operand 6 states. [2018-07-24 13:05:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:21,537 INFO L93 Difference]: Finished difference Result 12125 states and 21100 transitions. [2018-07-24 13:05:21,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 13:05:21,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 891 [2018-07-24 13:05:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:21,580 INFO L225 Difference]: With dead ends: 12125 [2018-07-24 13:05:21,580 INFO L226 Difference]: Without dead ends: 7053 [2018-07-24 13:05:21,597 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 13:05:21,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7053 states. [2018-07-24 13:05:21,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7053 to 7001. [2018-07-24 13:05:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7001 states. [2018-07-24 13:05:21,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 10863 transitions. [2018-07-24 13:05:21,904 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 10863 transitions. Word has length 891 [2018-07-24 13:05:21,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:21,905 INFO L471 AbstractCegarLoop]: Abstraction has 7001 states and 10863 transitions. [2018-07-24 13:05:21,905 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 13:05:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 10863 transitions. [2018-07-24 13:05:21,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2018-07-24 13:05:21,936 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:21,937 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:05:21,937 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:21,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1190144126, now seen corresponding path program 1 times [2018-07-24 13:05:21,938 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:21,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:21,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:21,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:21,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:22,308 WARN L169 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-07-24 13:05:22,687 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 13:05:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 90 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:05:23,418 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:23,418 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:05:23,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:23,429 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:23,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 13:05:24,638 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 90 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 13:05:25,595 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 13:05:25,595 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 11 [2018-07-24 13:05:25,596 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:05:25,597 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:05:25,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:05:25,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-07-24 13:05:25,598 INFO L87 Difference]: Start difference. First operand 7001 states and 10863 transitions. Second operand 5 states. [2018-07-24 13:05:33,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:33,235 INFO L93 Difference]: Finished difference Result 21121 states and 34229 transitions. [2018-07-24 13:05:33,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 13:05:33,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 913 [2018-07-24 13:05:33,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:33,350 INFO L225 Difference]: With dead ends: 21121 [2018-07-24 13:05:33,353 INFO L226 Difference]: Without dead ends: 14126 [2018-07-24 13:05:33,376 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1836 GetRequests, 1820 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-07-24 13:05:33,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14126 states. [2018-07-24 13:05:33,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14126 to 14052. [2018-07-24 13:05:33,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14052 states. [2018-07-24 13:05:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14052 states to 14052 states and 21218 transitions. [2018-07-24 13:05:33,787 INFO L78 Accepts]: Start accepts. Automaton has 14052 states and 21218 transitions. Word has length 913 [2018-07-24 13:05:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:33,787 INFO L471 AbstractCegarLoop]: Abstraction has 14052 states and 21218 transitions. [2018-07-24 13:05:33,788 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:05:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 14052 states and 21218 transitions. [2018-07-24 13:05:33,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2018-07-24 13:05:33,848 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:33,849 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:05:33,850 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:33,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1364521891, now seen corresponding path program 1 times [2018-07-24 13:05:33,851 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:33,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:33,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:33,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:33,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:34,241 WARN L169 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:05:34,981 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 101 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-24 13:05:34,981 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:34,981 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:05:35,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:35,231 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:35,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 13:05:36,553 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 108 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 13:05:37,157 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:37,157 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:05:37,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:37,175 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:38,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-07-24 13:05:39,101 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 103 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-24 13:05:40,035 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:05:40,036 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 11 [2018-07-24 13:05:40,036 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:05:40,038 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 13:05:40,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 13:05:40,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 13:05:40,039 INFO L87 Difference]: Start difference. First operand 14052 states and 21218 transitions. Second operand 8 states. [2018-07-24 13:05:52,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:52,108 INFO L93 Difference]: Finished difference Result 56529 states and 91891 transitions. [2018-07-24 13:05:52,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-24 13:05:52,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 921 [2018-07-24 13:05:52,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:52,329 INFO L225 Difference]: With dead ends: 56529 [2018-07-24 13:05:52,330 INFO L226 Difference]: Without dead ends: 42483 [2018-07-24 13:05:52,424 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3708 GetRequests, 3680 SyntacticMatches, 10 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2018-07-24 13:05:52,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42483 states. [2018-07-24 13:05:53,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42483 to 42378. [2018-07-24 13:05:53,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42378 states. [2018-07-24 13:05:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42378 states to 42378 states and 61703 transitions. [2018-07-24 13:05:53,448 INFO L78 Accepts]: Start accepts. Automaton has 42378 states and 61703 transitions. Word has length 921 [2018-07-24 13:05:53,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:53,449 INFO L471 AbstractCegarLoop]: Abstraction has 42378 states and 61703 transitions. [2018-07-24 13:05:53,449 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 13:05:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 42378 states and 61703 transitions. [2018-07-24 13:05:53,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2018-07-24 13:05:53,588 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:53,589 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 13:05:53,589 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:53,590 INFO L82 PathProgramCache]: Analyzing trace with hash 50889829, now seen corresponding path program 1 times [2018-07-24 13:05:53,590 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:53,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:53,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:53,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:53,596 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:05:56,456 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:56,456 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:05:56,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:56,465 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:56,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:05:57,545 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:05:58,546 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 13:05:58,546 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-07-24 13:05:58,546 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:05:58,548 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:05:58,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:05:58,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 13:05:58,548 INFO L87 Difference]: Start difference. First operand 42378 states and 61703 transitions. Second operand 3 states. [2018-07-24 13:06:03,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:06:03,304 INFO L93 Difference]: Finished difference Result 84750 states and 123669 transitions. [2018-07-24 13:06:03,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:06:03,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 943 [2018-07-24 13:06:03,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:06:03,437 INFO L225 Difference]: With dead ends: 84750 [2018-07-24 13:06:03,438 INFO L226 Difference]: Without dead ends: 42378 [2018-07-24 13:06:03,512 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1898 GetRequests, 1886 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 13:06:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42378 states. [2018-07-24 13:06:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42378 to 42378. [2018-07-24 13:06:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42378 states. [2018-07-24 13:06:04,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42378 states to 42378 states and 56578 transitions. [2018-07-24 13:06:04,277 INFO L78 Accepts]: Start accepts. Automaton has 42378 states and 56578 transitions. Word has length 943 [2018-07-24 13:06:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:06:04,278 INFO L471 AbstractCegarLoop]: Abstraction has 42378 states and 56578 transitions. [2018-07-24 13:06:04,278 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:06:04,278 INFO L276 IsEmpty]: Start isEmpty. Operand 42378 states and 56578 transitions. [2018-07-24 13:06:04,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1064 [2018-07-24 13:06:04,360 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:06:04,361 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:06:04,362 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:06:04,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1689973782, now seen corresponding path program 1 times [2018-07-24 13:06:04,362 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:06:04,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:04,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:04,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:04,364 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:06:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:05,352 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:06:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 241 proven. 96 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-24 13:06:06,434 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:06,434 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:06:06,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:06,442 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:06,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:06:07,573 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:06:08,175 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:08,175 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:06:08,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:08,193 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:09,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:06:09,906 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:06:10,546 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:06:10,547 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 13:06:10,547 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:06:10,549 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 13:06:10,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 13:06:10,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-07-24 13:06:10,550 INFO L87 Difference]: Start difference. First operand 42378 states and 56578 transitions. Second operand 9 states. [2018-07-24 13:06:19,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:06:19,060 INFO L93 Difference]: Finished difference Result 103094 states and 140711 transitions. [2018-07-24 13:06:19,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 13:06:19,060 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1063 [2018-07-24 13:06:19,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:06:19,294 INFO L225 Difference]: With dead ends: 103094 [2018-07-24 13:06:19,294 INFO L226 Difference]: Without dead ends: 60722 [2018-07-24 13:06:19,386 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4265 GetRequests, 4244 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2018-07-24 13:06:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60722 states. [2018-07-24 13:06:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60722 to 60285. [2018-07-24 13:06:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60285 states. [2018-07-24 13:06:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60285 states to 60285 states and 76088 transitions. [2018-07-24 13:06:20,541 INFO L78 Accepts]: Start accepts. Automaton has 60285 states and 76088 transitions. Word has length 1063 [2018-07-24 13:06:20,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:06:20,541 INFO L471 AbstractCegarLoop]: Abstraction has 60285 states and 76088 transitions. [2018-07-24 13:06:20,541 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 13:06:20,542 INFO L276 IsEmpty]: Start isEmpty. Operand 60285 states and 76088 transitions. [2018-07-24 13:06:20,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2018-07-24 13:06:20,636 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:06:20,637 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:06:20,637 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:06:20,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1353533692, now seen corresponding path program 1 times [2018-07-24 13:06:20,638 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:06:20,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:20,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:20,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:20,639 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:06:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 121 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:06:23,534 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:23,534 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 13:06:23,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:23,541 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:23,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 13:06:25,115 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 13:06:25,940 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 13:06:25,941 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 13:06:25,941 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:06:25,942 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:06:25,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:06:25,943 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-24 13:06:25,943 INFO L87 Difference]: Start difference. First operand 60285 states and 76088 transitions. Second operand 3 states. [2018-07-24 13:06:30,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:06:30,888 INFO L93 Difference]: Finished difference Result 120564 states and 152266 transitions. [2018-07-24 13:06:30,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:06:30,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1066 [2018-07-24 13:06:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:06:31,054 INFO L225 Difference]: With dead ends: 120564 [2018-07-24 13:06:31,055 INFO L226 Difference]: Without dead ends: 60285 [2018-07-24 13:06:31,129 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2146 GetRequests, 2133 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-24 13:06:31,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60285 states. [2018-07-24 13:06:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60285 to 58613. [2018-07-24 13:06:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58613 states. [2018-07-24 13:06:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58613 states to 58613 states and 70815 transitions. [2018-07-24 13:06:32,000 INFO L78 Accepts]: Start accepts. Automaton has 58613 states and 70815 transitions. Word has length 1066 [2018-07-24 13:06:32,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:06:32,002 INFO L471 AbstractCegarLoop]: Abstraction has 58613 states and 70815 transitions. [2018-07-24 13:06:32,002 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:06:32,002 INFO L276 IsEmpty]: Start isEmpty. Operand 58613 states and 70815 transitions. [2018-07-24 13:06:32,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1104 [2018-07-24 13:06:32,063 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:06:32,064 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-07-24 13:06:32,064 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:06:32,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1920860741, now seen corresponding path program 1 times [2018-07-24 13:06:32,065 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:06:32,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:32,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:32,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:32,066 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:06:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 300 proven. 41 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2018-07-24 13:06:33,239 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:33,240 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:06:33,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:33,247 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:33,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-07-24 13:06:34,304 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:35,092 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 328 proven. 126 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 13:06:35,113 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:35,114 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:06:35,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:35,132 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:36,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-07-24 13:06:36,678 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 328 proven. 126 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 13:06:37,534 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:06:37,536 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 13:06:37,536 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:06:37,537 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 13:06:37,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 13:06:37,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 13:06:37,537 INFO L87 Difference]: Start difference. First operand 58613 states and 70815 transitions. Second operand 9 states. [2018-07-24 13:06:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:06:51,612 INFO L93 Difference]: Finished difference Result 161325 states and 198014 transitions. [2018-07-24 13:06:51,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-07-24 13:06:51,612 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1103 [2018-07-24 13:06:51,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:06:51,824 INFO L225 Difference]: With dead ends: 161325 [2018-07-24 13:06:51,825 INFO L226 Difference]: Without dead ends: 81625 [2018-07-24 13:06:51,926 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4460 GetRequests, 4422 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=301, Invalid=1105, Unknown=0, NotChecked=0, Total=1406 [2018-07-24 13:06:51,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81625 states. [2018-07-24 13:06:52,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81625 to 77261. [2018-07-24 13:06:52,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77261 states. [2018-07-24 13:06:53,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77261 states to 77261 states and 82010 transitions. [2018-07-24 13:06:53,034 INFO L78 Accepts]: Start accepts. Automaton has 77261 states and 82010 transitions. Word has length 1103 [2018-07-24 13:06:53,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:06:53,034 INFO L471 AbstractCegarLoop]: Abstraction has 77261 states and 82010 transitions. [2018-07-24 13:06:53,034 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 13:06:53,035 INFO L276 IsEmpty]: Start isEmpty. Operand 77261 states and 82010 transitions. [2018-07-24 13:06:53,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1242 [2018-07-24 13:06:53,111 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:06:53,112 INFO L353 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 13:06:53,112 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:06:53,113 INFO L82 PathProgramCache]: Analyzing trace with hash 648891853, now seen corresponding path program 1 times [2018-07-24 13:06:53,113 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:06:53,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:53,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:53,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:53,115 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:06:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 442 proven. 175 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2018-07-24 13:06:54,601 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:54,601 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:06:54,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:54,609 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:55,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:55,946 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 663 proven. 2 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-07-24 13:06:55,946 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 663 proven. 2 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-07-24 13:06:57,115 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:57,115 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:06:57,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:57,133 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:58,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 665 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-07-24 13:06:59,039 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:07:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 667 proven. 4 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-07-24 13:07:00,200 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:07:00,201 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 13:07:00,201 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:07:00,202 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 13:07:00,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 13:07:00,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 13:07:00,203 INFO L87 Difference]: Start difference. First operand 77261 states and 82010 transitions. Second operand 9 states. [2018-07-24 13:07:14,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:07:14,102 INFO L93 Difference]: Finished difference Result 193181 states and 209777 transitions. [2018-07-24 13:07:14,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-24 13:07:14,102 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1241 [2018-07-24 13:07:14,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:07:14,352 INFO L225 Difference]: With dead ends: 193181 [2018-07-24 13:07:14,352 INFO L226 Difference]: Without dead ends: 116761 [2018-07-24 13:07:14,431 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5022 GetRequests, 4979 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=365, Invalid=1441, Unknown=0, NotChecked=0, Total=1806 [2018-07-24 13:07:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116761 states. [2018-07-24 13:07:15,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116761 to 107971. [2018-07-24 13:07:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107971 states. [2018-07-24 13:07:16,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107971 states to 107971 states and 113211 transitions. [2018-07-24 13:07:16,132 INFO L78 Accepts]: Start accepts. Automaton has 107971 states and 113211 transitions. Word has length 1241 [2018-07-24 13:07:16,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:07:16,132 INFO L471 AbstractCegarLoop]: Abstraction has 107971 states and 113211 transitions. [2018-07-24 13:07:16,133 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 13:07:16,133 INFO L276 IsEmpty]: Start isEmpty. Operand 107971 states and 113211 transitions. [2018-07-24 13:07:16,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1565 [2018-07-24 13:07:16,249 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:07:16,250 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:07:16,251 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:07:16,251 INFO L82 PathProgramCache]: Analyzing trace with hash 177785554, now seen corresponding path program 1 times [2018-07-24 13:07:16,251 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:07:16,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:07:16,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:07:16,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:07:16,253 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:07:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:07:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 738 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-07-24 13:07:19,656 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:07:19,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 13:07:19,656 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:07:19,657 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:07:19,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:07:19,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:07:19,658 INFO L87 Difference]: Start difference. First operand 107971 states and 113211 transitions. Second operand 3 states. [2018-07-24 13:07:23,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:07:23,347 INFO L93 Difference]: Finished difference Result 214204 states and 224617 transitions. [2018-07-24 13:07:23,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:07:23,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1564 [2018-07-24 13:07:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:07:23,350 INFO L225 Difference]: With dead ends: 214204 [2018-07-24 13:07:23,350 INFO L226 Difference]: Without dead ends: 0 [2018-07-24 13:07:23,511 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:07:23,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-24 13:07:23,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-24 13:07:23,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-24 13:07:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-24 13:07:23,513 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1564 [2018-07-24 13:07:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:07:23,514 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-24 13:07:23,514 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:07:23,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-24 13:07:23,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-24 13:07:23,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-24 13:07:23,954 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:23,964 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:23,965 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:23,995 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:23,999 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,006 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,007 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,010 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,033 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,035 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,039 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,040 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,071 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,075 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,076 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,079 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,088 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,098 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,174 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,175 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,204 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,225 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,285 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,355 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,361 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,368 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,376 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,455 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,575 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,730 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,754 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,763 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,782 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,804 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,806 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,808 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,810 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,812 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,842 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:24,871 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,005 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,047 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,049 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,049 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,081 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,082 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,084 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,132 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,198 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,216 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,217 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,303 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,305 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,306 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,446 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,448 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,450 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,525 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,535 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,555 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,641 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,651 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,652 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,751 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,755 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,784 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,795 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,838 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:25,903 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,002 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,032 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,340 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,367 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,368 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,441 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,451 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,572 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,573 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,585 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,612 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,631 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,641 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,674 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,675 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:26,753 WARN L169 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 949 DAG size of output: 703 [2018-07-24 13:07:27,742 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,746 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,762 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,764 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,769 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,769 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,780 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,784 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,784 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,803 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,805 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,813 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,814 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,853 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,853 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,880 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,910 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,946 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,954 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,955 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:27,959 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,003 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,004 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,031 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,057 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,140 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,157 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,163 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,167 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,178 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,179 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,180 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,181 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,198 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,293 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,338 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,339 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,340 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,342 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,370 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,410 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,419 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,482 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,483 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,484 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,485 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,653 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,654 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,655 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,656 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,696 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,702 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,713 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,714 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,770 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,771 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,777 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,778 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,882 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,884 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,902 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,934 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:28,964 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,040 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,042 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,068 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,140 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,336 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,359 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,360 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,361 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,362 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,417 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,426 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,434 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,515 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,543 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,553 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,554 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,595 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,596 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,633 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,634 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 13:07:29,702 WARN L169 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 949 DAG size of output: 703 [2018-07-24 13:07:35,907 WARN L169 SmtUtils]: Spent 5.99 s on a formula simplification. DAG size of input: 451 DAG size of output: 103 [2018-07-24 13:07:42,534 WARN L169 SmtUtils]: Spent 6.62 s on a formula simplification. DAG size of input: 656 DAG size of output: 79 [2018-07-24 13:07:48,339 WARN L169 SmtUtils]: Spent 5.78 s on a formula simplification. DAG size of input: 451 DAG size of output: 103 [2018-07-24 13:07:54,050 WARN L169 SmtUtils]: Spent 5.67 s on a formula simplification. DAG size of input: 451 DAG size of output: 103 [2018-07-24 13:07:59,780 WARN L169 SmtUtils]: Spent 5.71 s on a formula simplification. DAG size of input: 451 DAG size of output: 103 [2018-07-24 13:08:05,336 WARN L169 SmtUtils]: Spent 5.54 s on a formula simplification. DAG size of input: 451 DAG size of output: 103 Received shutdown request... [2018-07-24 13:08:10,260 WARN L177 SmtUtils]: Removed 3 from assertion stack [2018-07-24 13:08:10,260 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-07-24 13:08:10,262 INFO L168 Benchmark]: Toolchain (without parser) took 218973.69 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-24 13:08:10,263 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. [2018-07-24 13:08:10,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2327.66 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: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. [2018-07-24 13:08:10,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 156.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 13:08:10,265 INFO L168 Benchmark]: Boogie Preprocessor took 715.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 842.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.9 MB. Max. memory is 7.1 GB. [2018-07-24 13:08:10,266 INFO L168 Benchmark]: RCFGBuilder took 12364.72 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 191.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -105.9 MB). Peak memory consumption was 754.2 MB. Max. memory is 7.1 GB. [2018-07-24 13:08:10,267 INFO L168 Benchmark]: TraceAbstraction took 203403.56 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 3.3 GB in the end (delta: -920.4 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-07-24 13:08:10,272 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 2327.66 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: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 156.76 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 715.45 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 842.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12364.72 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 191.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -105.9 MB). Peak memory consumption was 754.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203403.56 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 3.3 GB in the end (delta: -920.4 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4769]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 451. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_13-08-10-285.csv Completed graceful shutdown