java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:40:20,058 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:40:20,060 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:40:20,076 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:40:20,077 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:40:20,078 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:40:20,080 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:40:20,082 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:40:20,087 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:40:20,088 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:40:20,096 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:40:20,097 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:40:20,098 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:40:20,099 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:40:20,103 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:40:20,104 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:40:20,108 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:40:20,109 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:40:20,114 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:40:20,116 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:40:20,117 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:40:20,120 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:40:20,125 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:40:20,125 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:40:20,125 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:40:20,128 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:40:20,129 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:40:20,130 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:40:20,131 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:40:20,132 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:40:20,132 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:40:20,135 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:40:20,135 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:40:20,135 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:40:20,138 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:40:20,140 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:40:20,140 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 12:40:20,161 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:40:20,162 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:40:20,162 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:40:20,163 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:40:20,163 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:40:20,163 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:40:20,163 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:40:20,164 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:40:20,164 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:40:20,164 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:40:20,165 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:40:20,166 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:40:20,166 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:40:20,167 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:40:20,167 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:40:20,167 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:40:20,167 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:40:20,167 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:40:20,168 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:40:20,168 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:40:20,168 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:40:20,168 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:40:20,168 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:40:20,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:40:20,170 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:40:20,170 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:40:20,171 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:40:20,171 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:40:20,171 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:40:20,171 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:40:20,171 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:40:20,171 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:40:20,172 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:40:20,252 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:40:20,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:40:20,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:40:20,273 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:40:20,274 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:40:20,275 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label50_true-unreach-call.c [2018-09-10 12:40:20,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82dfb668f/068d01e07b60495a83dd8f3765732c8b/FLAG3cfc8fe8c [2018-09-10 12:40:21,093 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:40:21,094 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label50_true-unreach-call.c [2018-09-10 12:40:21,121 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82dfb668f/068d01e07b60495a83dd8f3765732c8b/FLAG3cfc8fe8c [2018-09-10 12:40:21,137 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82dfb668f/068d01e07b60495a83dd8f3765732c8b [2018-09-10 12:40:21,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:40:21,152 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:40:21,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:40:21,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:40:21,160 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:40:21,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:40:21" (1/1) ... [2018-09-10 12:40:21,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707d2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:21, skipping insertion in model container [2018-09-10 12:40:21,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:40:21" (1/1) ... [2018-09-10 12:40:21,506 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:40:22,435 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:40:22,462 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:40:22,965 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:40:23,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:23 WrapperNode [2018-09-10 12:40:23,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:40:23,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:40:23,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:40:23,118 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:40:23,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:23" (1/1) ... [2018-09-10 12:40:23,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:23" (1/1) ... [2018-09-10 12:40:23,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:40:23,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:40:23,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:40:23,334 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:40:23,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:23" (1/1) ... [2018-09-10 12:40:23,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:23" (1/1) ... [2018-09-10 12:40:23,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:23" (1/1) ... [2018-09-10 12:40:23,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:23" (1/1) ... [2018-09-10 12:40:23,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:23" (1/1) ... [2018-09-10 12:40:23,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:23" (1/1) ... [2018-09-10 12:40:23,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:23" (1/1) ... [2018-09-10 12:40:23,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:40:23,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:40:23,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:40:23,990 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:40:23,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:40:24,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:40:24,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:40:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:40:24,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:40:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 12:40:24,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 12:40:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:40:24,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:40:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:40:24,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:40:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:40:24,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:40:31,696 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:40:31,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:40:31 BoogieIcfgContainer [2018-09-10 12:40:31,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:40:31,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:40:31,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:40:31,702 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:40:31,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:40:21" (1/3) ... [2018-09-10 12:40:31,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290f9796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:40:31, skipping insertion in model container [2018-09-10 12:40:31,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:40:23" (2/3) ... [2018-09-10 12:40:31,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@290f9796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:40:31, skipping insertion in model container [2018-09-10 12:40:31,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:40:31" (3/3) ... [2018-09-10 12:40:31,706 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label50_true-unreach-call.c [2018-09-10 12:40:31,715 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:40:31,727 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:40:31,798 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:40:31,799 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:40:31,799 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:40:31,799 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:40:31,800 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:40:31,800 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:40:31,800 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:40:31,800 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:40:31,800 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:40:31,856 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-10 12:40:31,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-10 12:40:31,867 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:40:31,868 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:40:31,869 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:40:31,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1894769636, now seen corresponding path program 1 times [2018-09-10 12:40:31,878 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:40:31,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:40:31,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:40:31,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:40:31,928 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:40:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:40:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:40:32,408 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:40:32,408 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:40:32,408 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:40:32,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:40:32,435 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:40:32,436 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:40:32,439 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-09-10 12:40:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:40:43,882 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-09-10 12:40:43,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:40:43,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2018-09-10 12:40:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:40:43,932 INFO L225 Difference]: With dead ends: 2974 [2018-09-10 12:40:43,933 INFO L226 Difference]: Without dead ends: 2193 [2018-09-10 12:40:43,945 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:40:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-09-10 12:40:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-09-10 12:40:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-09-10 12:40:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3506 transitions. [2018-09-10 12:40:44,115 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3506 transitions. Word has length 70 [2018-09-10 12:40:44,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:40:44,116 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 3506 transitions. [2018-09-10 12:40:44,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:40:44,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3506 transitions. [2018-09-10 12:40:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-10 12:40:44,126 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:40:44,126 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:40:44,127 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:40:44,127 INFO L82 PathProgramCache]: Analyzing trace with hash 149606866, now seen corresponding path program 1 times [2018-09-10 12:40:44,127 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:40:44,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:40:44,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:40:44,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:40:44,129 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:40:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:40:44,390 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:40:44,391 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:40:44,391 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:40:44,391 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:40:44,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:40:44,395 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:40:44,395 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:40:44,395 INFO L87 Difference]: Start difference. First operand 2193 states and 3506 transitions. Second operand 5 states. [2018-09-10 12:40:54,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:40:54,491 INFO L93 Difference]: Finished difference Result 6600 states and 10738 transitions. [2018-09-10 12:40:54,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:40:54,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-09-10 12:40:54,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:40:54,526 INFO L225 Difference]: With dead ends: 6600 [2018-09-10 12:40:54,526 INFO L226 Difference]: Without dead ends: 4413 [2018-09-10 12:40:54,535 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:40:54,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-09-10 12:40:54,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-09-10 12:40:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-09-10 12:40:54,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6712 transitions. [2018-09-10 12:40:54,795 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6712 transitions. Word has length 140 [2018-09-10 12:40:54,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:40:54,796 INFO L480 AbstractCegarLoop]: Abstraction has 4378 states and 6712 transitions. [2018-09-10 12:40:54,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:40:54,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6712 transitions. [2018-09-10 12:40:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-09-10 12:40:54,807 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:40:54,808 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:40:54,808 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:40:54,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1094714683, now seen corresponding path program 1 times [2018-09-10 12:40:54,808 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:40:54,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:40:54,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:40:54,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:40:54,811 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:40:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:40:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:40:55,066 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:40:55,067 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:40:55,067 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:40:55,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:40:55,071 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:40:55,071 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:40:55,071 INFO L87 Difference]: Start difference. First operand 4378 states and 6712 transitions. Second operand 6 states. [2018-09-10 12:41:00,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:41:00,743 INFO L93 Difference]: Finished difference Result 11002 states and 16943 transitions. [2018-09-10 12:41:00,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:41:00,744 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-09-10 12:41:00,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:41:00,782 INFO L225 Difference]: With dead ends: 11002 [2018-09-10 12:41:00,782 INFO L226 Difference]: Without dead ends: 6630 [2018-09-10 12:41:00,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:41:00,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-09-10 12:41:00,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-09-10 12:41:00,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-09-10 12:41:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8773 transitions. [2018-09-10 12:41:00,982 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8773 transitions. Word has length 167 [2018-09-10 12:41:00,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:41:00,983 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 8773 transitions. [2018-09-10 12:41:00,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:41:00,983 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8773 transitions. [2018-09-10 12:41:00,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-09-10 12:41:00,988 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:41:00,989 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:41:00,989 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:41:00,989 INFO L82 PathProgramCache]: Analyzing trace with hash -252342447, now seen corresponding path program 1 times [2018-09-10 12:41:00,990 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:41:00,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:41:00,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:41:00,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:41:00,991 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:41:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:41:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:41:01,267 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:41:01,267 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:41:01,267 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:41:01,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:41:01,268 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:41:01,268 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:41:01,269 INFO L87 Difference]: Start difference. First operand 6590 states and 8773 transitions. Second operand 4 states. [2018-09-10 12:41:08,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:41:08,633 INFO L93 Difference]: Finished difference Result 26008 states and 35865 transitions. [2018-09-10 12:41:08,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:41:08,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-09-10 12:41:08,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:41:08,730 INFO L225 Difference]: With dead ends: 26008 [2018-09-10 12:41:08,730 INFO L226 Difference]: Without dead ends: 19424 [2018-09-10 12:41:08,774 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:41:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19424 states. [2018-09-10 12:41:09,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19424 to 19424. [2018-09-10 12:41:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19424 states. [2018-09-10 12:41:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19424 states to 19424 states and 25179 transitions. [2018-09-10 12:41:09,431 INFO L78 Accepts]: Start accepts. Automaton has 19424 states and 25179 transitions. Word has length 177 [2018-09-10 12:41:09,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:41:09,432 INFO L480 AbstractCegarLoop]: Abstraction has 19424 states and 25179 transitions. [2018-09-10 12:41:09,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:41:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 19424 states and 25179 transitions. [2018-09-10 12:41:09,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-09-10 12:41:09,451 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:41:09,451 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:41:09,451 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:41:09,452 INFO L82 PathProgramCache]: Analyzing trace with hash -915608153, now seen corresponding path program 1 times [2018-09-10 12:41:09,453 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:41:09,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:41:09,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:41:09,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:41:09,454 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:41:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:41:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:41:09,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:41:09,812 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:41:09,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:41:09,822 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:41:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:41:09,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:41:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:41:10,447 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:41:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:41:11,436 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:41:11,436 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:41:11,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:41:11,454 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:41:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:41:11,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:41:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:41:11,853 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:41:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (3)] Exception during sending of exit command (exit): Broken pipe [2018-09-10 12:41:12,287 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:41:12,288 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 14 [2018-09-10 12:41:12,288 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:41:12,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:41:12,292 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:41:12,292 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:41:12,292 INFO L87 Difference]: Start difference. First operand 19424 states and 25179 transitions. Second operand 9 states. [2018-09-10 12:41:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:41:28,478 INFO L93 Difference]: Finished difference Result 71005 states and 100199 transitions. [2018-09-10 12:41:28,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-10 12:41:28,478 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 323 [2018-09-10 12:41:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:41:28,879 INFO L225 Difference]: With dead ends: 71005 [2018-09-10 12:41:28,880 INFO L226 Difference]: Without dead ends: 51491 [2018-09-10 12:41:29,131 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1313 GetRequests, 1288 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2018-09-10 12:41:29,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51491 states. [2018-09-10 12:41:30,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51491 to 51281. [2018-09-10 12:41:30,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51281 states. [2018-09-10 12:41:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51281 states to 51281 states and 65002 transitions. [2018-09-10 12:41:30,526 INFO L78 Accepts]: Start accepts. Automaton has 51281 states and 65002 transitions. Word has length 323 [2018-09-10 12:41:30,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:41:30,526 INFO L480 AbstractCegarLoop]: Abstraction has 51281 states and 65002 transitions. [2018-09-10 12:41:30,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:41:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 51281 states and 65002 transitions. [2018-09-10 12:41:30,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-09-10 12:41:30,583 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:41:30,584 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:41:30,584 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:41:30,584 INFO L82 PathProgramCache]: Analyzing trace with hash 338309164, now seen corresponding path program 1 times [2018-09-10 12:41:30,584 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:41:30,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:41:30,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:41:30,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:41:30,586 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:41:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:41:31,367 WARN L175 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 12:41:31,724 WARN L175 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-10 12:41:32,220 WARN L175 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-09-10 12:41:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 358 proven. 191 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-09-10 12:41:33,181 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:41:33,182 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:41:33,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:41:33,189 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:41:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:41:33,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:41:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 549 proven. 2 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-09-10 12:41:33,803 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:41:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 549 proven. 2 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-09-10 12:41:34,085 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:41:34,085 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:41:34,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:41:34,103 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:41:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:41:34,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:41:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 549 proven. 2 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-09-10 12:41:34,683 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:41:34,908 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 549 proven. 2 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2018-09-10 12:41:34,911 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:41:34,911 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 22 [2018-09-10 12:41:34,911 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:41:34,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-10 12:41:34,913 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-10 12:41:34,913 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2018-09-10 12:41:34,914 INFO L87 Difference]: Start difference. First operand 51281 states and 65002 transitions. Second operand 15 states. [2018-09-10 12:41:58,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:41:58,330 INFO L93 Difference]: Finished difference Result 121682 states and 159612 transitions. [2018-09-10 12:41:58,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-10 12:41:58,331 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 472 [2018-09-10 12:41:58,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:41:58,611 INFO L225 Difference]: With dead ends: 121682 [2018-09-10 12:41:58,612 INFO L226 Difference]: Without dead ends: 62841 [2018-09-10 12:41:58,891 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1974 GetRequests, 1907 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1209 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=952, Invalid=3470, Unknown=0, NotChecked=0, Total=4422 [2018-09-10 12:41:58,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62841 states. [2018-09-10 12:42:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62841 to 61945. [2018-09-10 12:42:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61945 states. [2018-09-10 12:42:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61945 states to 61945 states and 72373 transitions. [2018-09-10 12:42:00,407 INFO L78 Accepts]: Start accepts. Automaton has 61945 states and 72373 transitions. Word has length 472 [2018-09-10 12:42:00,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:42:00,408 INFO L480 AbstractCegarLoop]: Abstraction has 61945 states and 72373 transitions. [2018-09-10 12:42:00,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-10 12:42:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 61945 states and 72373 transitions. [2018-09-10 12:42:00,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2018-09-10 12:42:00,428 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:42:00,428 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:42:00,429 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:42:00,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2032027601, now seen corresponding path program 1 times [2018-09-10 12:42:00,429 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:42:00,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:42:00,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:42:00,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:42:00,431 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:42:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:42:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 171 proven. 71 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-10 12:42:01,841 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:42:01,841 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:42:01,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:42:01,850 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:42:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:42:02,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:42:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:42:02,383 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:42:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:42:03,685 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:42:03,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-10 12:42:03,686 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:42:03,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:42:03,686 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:42:03,687 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:42:03,687 INFO L87 Difference]: Start difference. First operand 61945 states and 72373 transitions. Second operand 3 states. [2018-09-10 12:42:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:42:07,205 INFO L93 Difference]: Finished difference Result 123181 states and 144083 transitions. [2018-09-10 12:42:07,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:42:07,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 581 [2018-09-10 12:42:07,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:42:07,407 INFO L225 Difference]: With dead ends: 123181 [2018-09-10 12:42:07,407 INFO L226 Difference]: Without dead ends: 61945 [2018-09-10 12:42:07,594 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 1163 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:42:07,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61945 states. [2018-09-10 12:42:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61945 to 59821. [2018-09-10 12:42:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59821 states. [2018-09-10 12:42:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59821 states to 59821 states and 67147 transitions. [2018-09-10 12:42:08,540 INFO L78 Accepts]: Start accepts. Automaton has 59821 states and 67147 transitions. Word has length 581 [2018-09-10 12:42:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:42:08,541 INFO L480 AbstractCegarLoop]: Abstraction has 59821 states and 67147 transitions. [2018-09-10 12:42:08,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:42:08,541 INFO L276 IsEmpty]: Start isEmpty. Operand 59821 states and 67147 transitions. [2018-09-10 12:42:08,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2018-09-10 12:42:08,661 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:42:08,662 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:42:08,662 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:42:08,662 INFO L82 PathProgramCache]: Analyzing trace with hash -706745464, now seen corresponding path program 1 times [2018-09-10 12:42:08,663 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:42:08,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:42:08,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:42:08,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:42:08,664 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:42:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:42:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 698 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:42:10,555 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:42:10,555 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 12:42:10,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:42:10,563 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:42:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:42:10,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:42:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 698 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:42:11,419 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:42:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 698 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:42:13,034 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:42:13,034 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 12:42:13,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:42:13,050 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:42:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:42:13,689 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:42:14,633 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 698 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:42:14,634 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:42:15,665 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 698 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:42:15,667 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:42:15,669 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:42:15,669 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:42:15,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:42:15,671 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:42:15,671 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:42:15,671 INFO L87 Difference]: Start difference. First operand 59821 states and 67147 transitions. Second operand 9 states. [2018-09-10 12:42:29,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:42:29,340 INFO L93 Difference]: Finished difference Result 155263 states and 186571 transitions. [2018-09-10 12:42:29,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-10 12:42:29,340 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 986 [2018-09-10 12:42:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:42:29,709 INFO L225 Difference]: With dead ends: 155263 [2018-09-10 12:42:29,709 INFO L226 Difference]: Without dead ends: 91872 [2018-09-10 12:42:29,904 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3976 GetRequests, 3945 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-10 12:42:29,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91872 states. [2018-09-10 12:42:31,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91872 to 91804. [2018-09-10 12:42:31,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91804 states. [2018-09-10 12:42:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91804 states to 91804 states and 109276 transitions. [2018-09-10 12:42:32,120 INFO L78 Accepts]: Start accepts. Automaton has 91804 states and 109276 transitions. Word has length 986 [2018-09-10 12:42:32,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:42:32,121 INFO L480 AbstractCegarLoop]: Abstraction has 91804 states and 109276 transitions. [2018-09-10 12:42:32,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:42:32,122 INFO L276 IsEmpty]: Start isEmpty. Operand 91804 states and 109276 transitions. [2018-09-10 12:42:32,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2018-09-10 12:42:32,188 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:42:32,189 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:42:32,189 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:42:32,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1509526944, now seen corresponding path program 1 times [2018-09-10 12:42:32,190 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:42:32,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:42:32,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:42:32,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:42:32,192 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:42:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:42:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 591 proven. 249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:42:34,142 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:42:34,142 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 12:42:34,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:42:34,150 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:42:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:42:34,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:42:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 715 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:42:35,432 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:42:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 715 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:42:36,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:42:36,615 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 12:42:36,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:42:36,634 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:42:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:42:37,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:42:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 715 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:42:37,843 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:42:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 715 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:42:39,171 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:42:39,172 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 5, 5] total 19 [2018-09-10 12:42:39,172 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:42:39,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-10 12:42:39,175 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-10 12:42:39,175 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-09-10 12:42:39,175 INFO L87 Difference]: Start difference. First operand 91804 states and 109276 transitions. Second operand 17 states. [2018-09-10 12:42:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:42:56,636 INFO L93 Difference]: Finished difference Result 202521 states and 247617 transitions. [2018-09-10 12:42:56,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-10 12:42:56,637 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1006 [2018-09-10 12:42:56,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:42:57,357 INFO L225 Difference]: With dead ends: 202521 [2018-09-10 12:42:57,358 INFO L226 Difference]: Without dead ends: 97724 [2018-09-10 12:42:57,546 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4140 GetRequests, 4059 SyntacticMatches, 10 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1648 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1106, Invalid=4150, Unknown=0, NotChecked=0, Total=5256 [2018-09-10 12:42:57,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97724 states. [2018-09-10 12:42:58,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97724 to 97363. [2018-09-10 12:42:58,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97363 states. [2018-09-10 12:42:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97363 states to 97363 states and 111632 transitions. [2018-09-10 12:42:58,916 INFO L78 Accepts]: Start accepts. Automaton has 97363 states and 111632 transitions. Word has length 1006 [2018-09-10 12:42:58,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:42:58,917 INFO L480 AbstractCegarLoop]: Abstraction has 97363 states and 111632 transitions. [2018-09-10 12:42:58,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-10 12:42:58,917 INFO L276 IsEmpty]: Start isEmpty. Operand 97363 states and 111632 transitions. [2018-09-10 12:42:59,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1190 [2018-09-10 12:42:59,005 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:42:59,006 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:42:59,006 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:42:59,007 INFO L82 PathProgramCache]: Analyzing trace with hash -241491541, now seen corresponding path program 1 times [2018-09-10 12:42:59,007 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:42:59,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:42:59,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:42:59,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:42:59,008 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:42:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:42:59,808 WARN L175 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-10 12:42:59,988 WARN L175 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-10 12:43:00,337 WARN L175 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-10 12:43:00,825 WARN L175 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-10 12:43:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 936 proven. 2 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2018-09-10 12:43:05,086 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:43:05,086 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:43:05,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:43:05,096 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:43:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:43:05,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:43:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2018-09-10 12:43:06,639 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:43:06,889 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-09-10 12:43:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1329 backedges. 252 proven. 354 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2018-09-10 12:43:08,135 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:43:08,136 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [17, 5] total 22 [2018-09-10 12:43:08,136 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:43:08,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:43:08,138 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:43:08,138 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2018-09-10 12:43:08,138 INFO L87 Difference]: Start difference. First operand 97363 states and 111632 transitions. Second operand 5 states. [2018-09-10 12:43:14,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:43:14,820 INFO L93 Difference]: Finished difference Result 202034 states and 231444 transitions. [2018-09-10 12:43:14,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:43:14,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1189 [2018-09-10 12:43:14,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:43:15,370 INFO L225 Difference]: With dead ends: 202034 [2018-09-10 12:43:15,371 INFO L226 Difference]: Without dead ends: 104664 [2018-09-10 12:43:15,502 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2398 GetRequests, 2374 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2018-09-10 12:43:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104664 states. [2018-09-10 12:43:16,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104664 to 100365. [2018-09-10 12:43:16,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100365 states. [2018-09-10 12:43:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100365 states to 100365 states and 115324 transitions. [2018-09-10 12:43:17,035 INFO L78 Accepts]: Start accepts. Automaton has 100365 states and 115324 transitions. Word has length 1189 [2018-09-10 12:43:17,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:43:17,035 INFO L480 AbstractCegarLoop]: Abstraction has 100365 states and 115324 transitions. [2018-09-10 12:43:17,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:43:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand 100365 states and 115324 transitions. [2018-09-10 12:43:17,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1717 [2018-09-10 12:43:17,162 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:43:17,163 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:43:17,164 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:43:17,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1967263396, now seen corresponding path program 1 times [2018-09-10 12:43:17,165 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:43:17,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:43:17,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:43:17,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:43:17,166 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:43:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:43:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 512 proven. 1354 refuted. 0 times theorem prover too weak. 1309 trivial. 0 not checked. [2018-09-10 12:43:20,226 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:43:20,226 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:43:20,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:43:20,235 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:43:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:43:20,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:43:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 2710 trivial. 0 not checked. [2018-09-10 12:43:21,717 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:43:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3175 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 2710 trivial. 0 not checked. [2018-09-10 12:43:22,824 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:43:22,825 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [12] total 13 [2018-09-10 12:43:22,825 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:43:22,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:43:22,826 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:43:22,826 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:43:22,827 INFO L87 Difference]: Start difference. First operand 100365 states and 115324 transitions. Second operand 3 states. [2018-09-10 12:43:26,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:43:26,932 INFO L93 Difference]: Finished difference Result 200013 states and 230064 transitions. [2018-09-10 12:43:26,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:43:26,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1716 [2018-09-10 12:43:26,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:43:27,577 INFO L225 Difference]: With dead ends: 200013 [2018-09-10 12:43:27,578 INFO L226 Difference]: Without dead ends: 99655 [2018-09-10 12:43:27,716 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3450 GetRequests, 3433 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:43:27,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99655 states. [2018-09-10 12:43:28,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99655 to 99655. [2018-09-10 12:43:28,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99655 states. [2018-09-10 12:43:29,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99655 states to 99655 states and 112746 transitions. [2018-09-10 12:43:29,048 INFO L78 Accepts]: Start accepts. Automaton has 99655 states and 112746 transitions. Word has length 1716 [2018-09-10 12:43:29,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:43:29,049 INFO L480 AbstractCegarLoop]: Abstraction has 99655 states and 112746 transitions. [2018-09-10 12:43:29,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:43:29,050 INFO L276 IsEmpty]: Start isEmpty. Operand 99655 states and 112746 transitions. [2018-09-10 12:43:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1726 [2018-09-10 12:43:29,134 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:43:29,136 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:43:29,136 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:43:29,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1844519071, now seen corresponding path program 1 times [2018-09-10 12:43:29,137 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:43:29,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:43:29,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:43:29,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:43:29,138 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:43:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:43:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3093 backedges. 886 proven. 1433 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2018-09-10 12:43:35,432 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:43:35,432 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:43:35,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:43:35,440 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:43:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:43:35,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:43:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3093 backedges. 2091 proven. 2 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2018-09-10 12:43:36,996 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:43:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3093 backedges. 763 proven. 230 refuted. 0 times theorem prover too weak. 2100 trivial. 0 not checked. [2018-09-10 12:43:38,573 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:43:38,573 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:43:38,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:43:38,588 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:43:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:43:39,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:43:40,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3093 backedges. 2091 proven. 2 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2018-09-10 12:43:40,631 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:43:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3093 backedges. 763 proven. 230 refuted. 0 times theorem prover too weak. 2100 trivial. 0 not checked. [2018-09-10 12:43:42,230 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:43:42,231 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 5, 5, 5, 5] total 31 [2018-09-10 12:43:42,231 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:43:42,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-10 12:43:42,233 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-10 12:43:42,234 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=767, Unknown=0, NotChecked=0, Total=930 [2018-09-10 12:43:42,234 INFO L87 Difference]: Start difference. First operand 99655 states and 112746 transitions. Second operand 27 states. [2018-09-10 12:43:53,593 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-09-10 12:43:59,754 WARN L175 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2018-09-10 12:44:02,846 WARN L175 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 24 [2018-09-10 12:44:05,058 WARN L175 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 Received shutdown request... [2018-09-10 12:44:06,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-10 12:44:06,726 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:44:06,731 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:44:06,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:44:06 BoogieIcfgContainer [2018-09-10 12:44:06,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:44:06,733 INFO L168 Benchmark]: Toolchain (without parser) took 225582.96 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 207.4 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-10 12:44:06,734 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:44:06,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1963.84 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:44:06,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 215.20 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:44:06,737 INFO L168 Benchmark]: Boogie Preprocessor took 656.15 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 865.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:44:06,738 INFO L168 Benchmark]: RCFGBuilder took 7707.23 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 537.7 MB). Peak memory consumption was 537.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:44:06,738 INFO L168 Benchmark]: TraceAbstraction took 215033.72 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 1.2 GB in the end (delta: 548.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-10 12:44:06,745 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1963.84 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 215.20 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 656.15 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 865.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7707.23 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 537.7 MB). Peak memory consumption was 537.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215033.72 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 1.2 GB in the end (delta: 548.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 198). Cancelled while BasicCegarLoop was constructing difference of abstraction (99655states) and FLOYD_HOARE automaton (currently 61 states, 27 states before enhancement), while ReachableStatesComputation was computing reachable states (54442 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 214.9s OverallTime, 12 OverallIterations, 8 TraceHistogramMax, 148.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4273 SDtfs, 62421 SDslu, 3512 SDs, 0 SdLazy, 93669 SolverSat, 16881 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25477 GetRequests, 25115 SyntacticMatches, 47 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5266 ImplicationChecksByTransitivity, 17.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100365occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 11.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 8033 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 5.9s SatisfiabilityAnalysisTime, 33.7s InterpolantComputationTime, 21062 NumberOfCodeBlocks, 21062 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 33534 ConstructedInterpolants, 0 QuantifiedInterpolants, 109571383 SizeOfPredicates, 9 NumberOfNonLiveVariables, 16433 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 38 InterpolantComputations, 9 PerfectInterpolantSequences, 39307/43488 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/Problem18_label50_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-44-06-762.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label50_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-44-06-762.csv Completed graceful shutdown