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_label15_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:05:21,266 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:05:21,268 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:05:21,290 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:05:21,291 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:05:21,293 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:05:21,295 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:05:21,297 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:05:21,300 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:05:21,301 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:05:21,303 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:05:21,303 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:05:21,305 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:05:21,305 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:05:21,310 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:05:21,311 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:05:21,320 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:05:21,322 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:05:21,327 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:05:21,332 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:05:21,333 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:05:21,334 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:05:21,337 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:05:21,337 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:05:21,337 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:05:21,338 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:05:21,339 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:05:21,340 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:05:21,340 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:05:21,342 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:05:21,342 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:05:21,343 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:05:21,343 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:05:21,343 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:05:21,344 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:05:21,345 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:05:21,345 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 11:05:21,361 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:05:21,362 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:05:21,362 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:05:21,363 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:05:21,363 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:05:21,363 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:05:21,363 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:05:21,364 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:05:21,364 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:05:21,364 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:05:21,364 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:05:21,365 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:05:21,365 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:05:21,365 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:05:21,366 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:05:21,366 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:05:21,366 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:05:21,366 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:05:21,366 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:05:21,367 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:05:21,367 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:05:21,367 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:05:21,367 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:05:21,367 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:05:21,368 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:05:21,368 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:05:21,368 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:05:21,368 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:05:21,368 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:05:21,369 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:05:21,369 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:05:21,369 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:05:21,369 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:05:21,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:05:21,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:05:21,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:05:21,447 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:05:21,448 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:05:21,449 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label15_false-unreach-call.c [2018-07-24 11:05:21,801 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91b99954f/d65c7ff4429f4e0ba3cf1deda7033b2f/FLAG1df9f1584 [2018-07-24 11:05:22,305 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:05:22,306 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label15_false-unreach-call.c [2018-07-24 11:05:22,341 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91b99954f/d65c7ff4429f4e0ba3cf1deda7033b2f/FLAG1df9f1584 [2018-07-24 11:05:22,358 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91b99954f/d65c7ff4429f4e0ba3cf1deda7033b2f [2018-07-24 11:05:22,371 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:05:22,373 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:05:22,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:05:22,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:05:22,384 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:05:22,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:05:22" (1/1) ... [2018-07-24 11:05:22,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f7c7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:22, skipping insertion in model container [2018-07-24 11:05:22,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:05:22" (1/1) ... [2018-07-24 11:05:22,744 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:05:23,828 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:05:23,848 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:05:24,609 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:05:24,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:24 WrapperNode [2018-07-24 11:05:24,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:05:24,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:05:24,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:05:24,752 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:05:24,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:24" (1/1) ... [2018-07-24 11:05:24,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:24" (1/1) ... [2018-07-24 11:05:24,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:05:24,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:05:24,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:05:24,873 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:05:24,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:24" (1/1) ... [2018-07-24 11:05:24,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:24" (1/1) ... [2018-07-24 11:05:24,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:24" (1/1) ... [2018-07-24 11:05:24,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:24" (1/1) ... [2018-07-24 11:05:25,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:24" (1/1) ... [2018-07-24 11:05:25,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:24" (1/1) ... [2018-07-24 11:05:25,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:24" (1/1) ... [2018-07-24 11:05:25,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:05:25,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:05:25,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:05:25,497 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:05:25,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:24" (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 11:05:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:05:25,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:05:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:05:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:05:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:05:25,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:05:25,572 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:05:25,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:05:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:05:25,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:05:25,574 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:05:25,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:05:25,575 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:05:25,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:05:37,108 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:05:37,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:05:37 BoogieIcfgContainer [2018-07-24 11:05:37,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:05:37,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:05:37,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:05:37,113 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:05:37,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:05:22" (1/3) ... [2018-07-24 11:05:37,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2de92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:05:37, skipping insertion in model container [2018-07-24 11:05:37,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:05:24" (2/3) ... [2018-07-24 11:05:37,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2de92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:05:37, skipping insertion in model container [2018-07-24 11:05:37,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:05:37" (3/3) ... [2018-07-24 11:05:37,117 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label15_false-unreach-call.c [2018-07-24 11:05:37,127 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:05:37,136 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:05:37,203 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:05:37,203 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:05:37,204 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:05:37,204 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:05:37,204 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:05:37,204 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:05:37,204 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:05:37,204 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:05:37,205 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:05:37,248 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-07-24 11:05:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 793 [2018-07-24 11:05:37,312 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:05:37,314 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] [2018-07-24 11:05:37,315 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:05:37,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1518469544, now seen corresponding path program 1 times [2018-07-24 11:05:37,324 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:05:37,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:05:37,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:05:37,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:05:37,372 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:05:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:05:39,431 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 11:05:39,433 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:05:39,433 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:05:39,434 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:05:39,440 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:05:39,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:05:39,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:05:39,459 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-07-24 11:05:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:05:47,033 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-07-24 11:05:47,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:05:47,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 792 [2018-07-24 11:05:47,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:05:47,081 INFO L225 Difference]: With dead ends: 2647 [2018-07-24 11:05:47,082 INFO L226 Difference]: Without dead ends: 1738 [2018-07-24 11:05:47,094 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 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 11:05:47,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-07-24 11:05:47,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-07-24 11:05:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-07-24 11:05:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3169 transitions. [2018-07-24 11:05:47,252 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3169 transitions. Word has length 792 [2018-07-24 11:05:47,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:05:47,255 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 3169 transitions. [2018-07-24 11:05:47,255 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:05:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3169 transitions. [2018-07-24 11:05:47,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-07-24 11:05:47,285 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:05:47,286 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:05:47,286 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:05:47,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1959005947, now seen corresponding path program 1 times [2018-07-24 11:05:47,287 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:05:47,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:05:47,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:05:47,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:05:47,289 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:05:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:05:48,163 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-07-24 11:05:48,494 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 11:05:48,730 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 11:05:49,879 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:05:49,879 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:05:49,879 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 11:05:49,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:05:49,890 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:05:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:05:50,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:05:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:05:51,470 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:05:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:05:53,006 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:05:53,007 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 11:05:53,007 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:05:53,010 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:05:53,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:05:53,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:05:53,010 INFO L87 Difference]: Start difference. First operand 1738 states and 3169 transitions. Second operand 3 states. [2018-07-24 11:06:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:06:01,011 INFO L93 Difference]: Finished difference Result 5140 states and 9490 transitions. [2018-07-24 11:06:01,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:06:01,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 812 [2018-07-24 11:06:01,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:06:01,037 INFO L225 Difference]: With dead ends: 5140 [2018-07-24 11:06:01,038 INFO L226 Difference]: Without dead ends: 3408 [2018-07-24 11:06:01,045 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1637 GetRequests, 1623 SyntacticMatches, 7 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:06:01,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2018-07-24 11:06:01,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3408. [2018-07-24 11:06:01,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2018-07-24 11:06:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 5907 transitions. [2018-07-24 11:06:01,149 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 5907 transitions. Word has length 812 [2018-07-24 11:06:01,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:06:01,151 INFO L471 AbstractCegarLoop]: Abstraction has 3408 states and 5907 transitions. [2018-07-24 11:06:01,151 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:06:01,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 5907 transitions. [2018-07-24 11:06:01,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2018-07-24 11:06:01,168 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:06:01,168 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:06:01,169 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:06:01,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1716406025, now seen corresponding path program 1 times [2018-07-24 11:06:01,170 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:06:01,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:01,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:01,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:01,172 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:06:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:01,526 WARN L169 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:06:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:02,220 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:06:02,221 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:06:02,221 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:06:02,222 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:06:02,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:06:02,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:06:02,223 INFO L87 Difference]: Start difference. First operand 3408 states and 5907 transitions. Second operand 6 states. [2018-07-24 11:06:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:06:12,358 INFO L93 Difference]: Finished difference Result 8618 states and 14850 transitions. [2018-07-24 11:06:12,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:06:12,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 814 [2018-07-24 11:06:12,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:06:12,401 INFO L225 Difference]: With dead ends: 8618 [2018-07-24 11:06:12,401 INFO L226 Difference]: Without dead ends: 5216 [2018-07-24 11:06:12,410 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:06:12,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2018-07-24 11:06:12,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 5196. [2018-07-24 11:06:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5196 states. [2018-07-24 11:06:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5196 states to 5196 states and 7775 transitions. [2018-07-24 11:06:12,551 INFO L78 Accepts]: Start accepts. Automaton has 5196 states and 7775 transitions. Word has length 814 [2018-07-24 11:06:12,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:06:12,552 INFO L471 AbstractCegarLoop]: Abstraction has 5196 states and 7775 transitions. [2018-07-24 11:06:12,552 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:06:12,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5196 states and 7775 transitions. [2018-07-24 11:06:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2018-07-24 11:06:12,571 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:06:12,572 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:06:12,572 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:06:12,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1577035408, now seen corresponding path program 1 times [2018-07-24 11:06:12,573 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:06:12,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:12,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:12,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:12,574 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:06:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:13,456 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:06:13,456 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 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 11:06:13,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:13,478 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:06:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:13,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:06:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:14,639 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:06:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:15,225 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:06:15,225 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 11:06:15,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:15,243 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:06:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:16,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:06:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:17,093 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:06:17,617 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:06:17,620 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:06:17,621 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 11:06:17,621 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:06:17,623 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:06:17,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:06:17,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:06:17,624 INFO L87 Difference]: Start difference. First operand 5196 states and 7775 transitions. Second operand 9 states. [2018-07-24 11:06:34,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:06:34,204 INFO L93 Difference]: Finished difference Result 26461 states and 41529 transitions. [2018-07-24 11:06:34,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-24 11:06:34,206 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 830 [2018-07-24 11:06:34,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:06:34,300 INFO L225 Difference]: With dead ends: 26461 [2018-07-24 11:06:34,301 INFO L226 Difference]: Without dead ends: 21271 [2018-07-24 11:06:34,327 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3357 GetRequests, 3318 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=308, Invalid=1174, Unknown=0, NotChecked=0, Total=1482 [2018-07-24 11:06:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21271 states. [2018-07-24 11:06:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21271 to 21127. [2018-07-24 11:06:34,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21127 states. [2018-07-24 11:06:34,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21127 states to 21127 states and 27722 transitions. [2018-07-24 11:06:34,832 INFO L78 Accepts]: Start accepts. Automaton has 21127 states and 27722 transitions. Word has length 830 [2018-07-24 11:06:34,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:06:34,832 INFO L471 AbstractCegarLoop]: Abstraction has 21127 states and 27722 transitions. [2018-07-24 11:06:34,832 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:06:34,832 INFO L276 IsEmpty]: Start isEmpty. Operand 21127 states and 27722 transitions. [2018-07-24 11:06:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2018-07-24 11:06:34,899 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:06:34,900 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 11:06:34,900 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:06:34,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1376027068, now seen corresponding path program 1 times [2018-07-24 11:06:34,901 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:06:34,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:34,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:34,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:06:34,903 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:06:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 290 proven. 165 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-07-24 11:06:36,251 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:06:36,251 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 11:06:36,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:36,260 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:06:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:36,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:06:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-07-24 11:06:37,240 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:06:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-07-24 11:06:38,047 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:06:38,048 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:06:38,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:06:38,065 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:06:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:06:39,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:06:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-07-24 11:06:39,722 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:06:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2018-07-24 11:06:40,425 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:06:40,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 11:06:40,427 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:06:40,429 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:06:40,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:06:40,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:06:40,430 INFO L87 Difference]: Start difference. First operand 21127 states and 27722 transitions. Second operand 9 states. [2018-07-24 11:07:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:07:00,791 INFO L93 Difference]: Finished difference Result 81681 states and 116371 transitions. [2018-07-24 11:07:00,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-24 11:07:00,791 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1062 [2018-07-24 11:07:00,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:07:01,053 INFO L225 Difference]: With dead ends: 81681 [2018-07-24 11:07:01,054 INFO L226 Difference]: Without dead ends: 60560 [2018-07-24 11:07:01,145 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4304 GetRequests, 4263 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=338, Invalid=1302, Unknown=0, NotChecked=0, Total=1640 [2018-07-24 11:07:01,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60560 states. [2018-07-24 11:07:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60560 to 60059. [2018-07-24 11:07:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60059 states. [2018-07-24 11:07:02,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60059 states to 60059 states and 76838 transitions. [2018-07-24 11:07:02,424 INFO L78 Accepts]: Start accepts. Automaton has 60059 states and 76838 transitions. Word has length 1062 [2018-07-24 11:07:02,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:07:02,424 INFO L471 AbstractCegarLoop]: Abstraction has 60059 states and 76838 transitions. [2018-07-24 11:07:02,425 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:07:02,425 INFO L276 IsEmpty]: Start isEmpty. Operand 60059 states and 76838 transitions. [2018-07-24 11:07:02,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1310 [2018-07-24 11:07:02,574 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:07:02,575 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:02,575 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:07:02,576 INFO L82 PathProgramCache]: Analyzing trace with hash 2032296594, now seen corresponding path program 1 times [2018-07-24 11:07:02,576 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:07:02,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:02,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:02,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:07:02,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:07:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:03,014 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-07-24 11:07:03,344 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 11:07:03,563 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 11:07:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 513 proven. 187 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-07-24 11:07:04,641 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:07:04,641 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:07:04,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:04,649 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:07:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:05,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:07:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2018-07-24 11:07:06,268 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:07:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 530 proven. 144 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-07-24 11:07:07,107 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:07:07,108 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:07:07,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:07:07,125 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:07:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:07:08,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:07:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2018-07-24 11:07:09,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:07:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 530 proven. 144 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-07-24 11:07:10,472 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:07:10,473 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 18 [2018-07-24 11:07:10,474 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:07:10,475 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 11:07:10,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 11:07:10,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:07:10,476 INFO L87 Difference]: Start difference. First operand 60059 states and 76838 transitions. Second operand 14 states. [2018-07-24 11:07:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:07:57,601 INFO L93 Difference]: Finished difference Result 306028 states and 429747 transitions. [2018-07-24 11:07:57,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-07-24 11:07:57,601 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1309 [2018-07-24 11:07:57,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:07:58,730 INFO L225 Difference]: With dead ends: 306028 [2018-07-24 11:07:58,730 INFO L226 Difference]: Without dead ends: 244020 [2018-07-24 11:07:58,980 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5348 GetRequests, 5276 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=876, Invalid=3680, Unknown=0, NotChecked=0, Total=4556 [2018-07-24 11:07:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244020 states. [2018-07-24 11:08:03,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244020 to 239244. [2018-07-24 11:08:03,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239244 states. [2018-07-24 11:08:04,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239244 states to 239244 states and 296764 transitions. [2018-07-24 11:08:04,302 INFO L78 Accepts]: Start accepts. Automaton has 239244 states and 296764 transitions. Word has length 1309 [2018-07-24 11:08:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:08:04,302 INFO L471 AbstractCegarLoop]: Abstraction has 239244 states and 296764 transitions. [2018-07-24 11:08:04,303 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 11:08:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 239244 states and 296764 transitions. [2018-07-24 11:08:04,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1626 [2018-07-24 11:08:04,720 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:08:04,722 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:08:04,722 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:08:04,722 INFO L82 PathProgramCache]: Analyzing trace with hash 718265299, now seen corresponding path program 1 times [2018-07-24 11:08:04,723 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:08:04,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:08:04,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:08:04,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:08:04,724 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:08:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:08:05,356 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:08:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 828 proven. 656 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-07-24 11:08:09,408 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:08:09,408 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 11:08:09,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:08:09,416 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:08:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:08:10,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:08:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 911 proven. 2 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2018-07-24 11:08:11,872 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:08:14,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 934 proven. 265 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2018-07-24 11:08:14,097 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:08:14,098 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 11:08:14,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:08:14,114 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:08:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:08:15,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:08:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 911 proven. 2 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2018-07-24 11:08:16,987 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:08:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 934 proven. 265 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2018-07-24 11:08:18,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:08:18,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 20 [2018-07-24 11:08:18,193 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:08:18,194 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 11:08:18,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 11:08:18,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2018-07-24 11:08:18,195 INFO L87 Difference]: Start difference. First operand 239244 states and 296764 transitions. Second operand 13 states. [2018-07-24 11:08:39,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:08:39,085 INFO L93 Difference]: Finished difference Result 496126 states and 635553 transitions. [2018-07-24 11:08:39,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-24 11:08:39,086 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1625 [2018-07-24 11:08:39,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:08:39,934 INFO L225 Difference]: With dead ends: 496126 [2018-07-24 11:08:39,934 INFO L226 Difference]: Without dead ends: 256893 [2018-07-24 11:08:40,159 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6575 GetRequests, 6521 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=555, Invalid=2201, Unknown=0, NotChecked=0, Total=2756 [2018-07-24 11:08:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256893 states. [2018-07-24 11:08:43,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256893 to 255784. [2018-07-24 11:08:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255784 states. [2018-07-24 11:08:44,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255784 states to 255784 states and 316756 transitions. [2018-07-24 11:08:44,500 INFO L78 Accepts]: Start accepts. Automaton has 255784 states and 316756 transitions. Word has length 1625 [2018-07-24 11:08:44,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:08:44,500 INFO L471 AbstractCegarLoop]: Abstraction has 255784 states and 316756 transitions. [2018-07-24 11:08:44,500 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 11:08:44,501 INFO L276 IsEmpty]: Start isEmpty. Operand 255784 states and 316756 transitions. [2018-07-24 11:08:44,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1630 [2018-07-24 11:08:44,876 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:08:44,877 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:08:44,877 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:08:44,878 INFO L82 PathProgramCache]: Analyzing trace with hash -827310210, now seen corresponding path program 1 times [2018-07-24 11:08:44,878 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:08:44,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:08:44,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:08:44,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:08:44,879 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:08:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-07-24 11:08:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1570 backedges. 828 proven. 0 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2018-07-24 11:08:54,692 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:08:54,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:08:54,692 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:08:54,694 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:08:54,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:08:54,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:08:54,695 INFO L87 Difference]: Start difference. First operand 255784 states and 316756 transitions. Second operand 3 states. [2018-07-24 11:08:54,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-24 11:08:54,696 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:08:54,701 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:08:54,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:08:54 BoogieIcfgContainer [2018-07-24 11:08:54,702 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:08:54,703 INFO L168 Benchmark]: Toolchain (without parser) took 212331.30 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 4.1 GB in the end (delta: -2.7 GB). Peak memory consumption was 876.5 MB. Max. memory is 7.1 GB. [2018-07-24 11:08:54,704 INFO L168 Benchmark]: CDTParser took 0.30 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 11:08:54,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2376.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 232.5 MB). Peak memory consumption was 232.5 MB. Max. memory is 7.1 GB. [2018-07-24 11:08:54,705 INFO L168 Benchmark]: Boogie Procedure Inliner took 120.47 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 11:08:54,706 INFO L168 Benchmark]: Boogie Preprocessor took 624.37 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 865.6 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 89.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:08:54,707 INFO L168 Benchmark]: RCFGBuilder took 11612.40 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 166.2 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -46.9 MB). Peak memory consumption was 724.0 MB. Max. memory is 7.1 GB. [2018-07-24 11:08:54,708 INFO L168 Benchmark]: TraceAbstraction took 197591.99 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.5 GB). Free memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 783.2 MB. Max. memory is 7.1 GB. [2018-07-24 11:08:54,713 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 2376.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 232.5 MB). Peak memory consumption was 232.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 120.47 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 624.37 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 865.6 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 89.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11612.40 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 166.2 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -46.9 MB). Peak memory consumption was 724.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 197591.99 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.5 GB). Free memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 783.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4694]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4694). Cancelled while BasicCegarLoop was constructing difference of abstraction (255784states) and interpolant automaton (currently 2 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 197.5s OverallTime, 8 OverallIterations, 7 TraceHistogramMax, 133.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1512 SDtfs, 60879 SDslu, 2735 SDs, 0 SdLazy, 77214 SolverSat, 33465 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21247 GetRequests, 21011 SyntacticMatches, 27 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2872 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255784occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 11.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 6550 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 6.8s SatisfiabilityAnalysisTime, 26.8s InterpolantComputationTime, 19337 NumberOfCodeBlocks, 19337 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 29775 ConstructedInterpolants, 0 QuantifiedInterpolants, 56628970 SizeOfPredicates, 8 NumberOfNonLiveVariables, 15021 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 17046/18905 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label15_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-08-54-728.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label15_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-08-54-728.csv Completed graceful shutdown