java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:19:17,230 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:19:17,232 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:19:17,245 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:19:17,245 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:19:17,246 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:19:17,247 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:19:17,249 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:19:17,251 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:19:17,252 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:19:17,252 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:19:17,253 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:19:17,254 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:19:17,255 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:19:17,256 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:19:17,257 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:19:17,257 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:19:17,259 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:19:17,261 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:19:17,263 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:19:17,264 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:19:17,268 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:19:17,271 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:19:17,271 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:19:17,273 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:19:17,274 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:19:17,279 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:19:17,279 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:19:17,283 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:19:17,284 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:19:17,284 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:19:17,285 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:19:17,285 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:19:17,288 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:19:17,289 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:19:17,290 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:19:17,290 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:19:17,322 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:19:17,322 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:19:17,324 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:19:17,324 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:19:17,324 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:19:17,325 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:19:17,325 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:19:17,325 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:19:17,325 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:19:17,326 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:19:17,326 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:19:17,327 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:19:17,327 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:19:17,327 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:19:17,327 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:19:17,328 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:19:17,328 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:19:17,328 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:19:17,329 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:19:17,329 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:19:17,329 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:19:17,329 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:19:17,329 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:19:17,330 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:19:17,330 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:19:17,330 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:19:17,330 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:19:17,332 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:19:17,332 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:19:17,332 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:19:17,332 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:19:17,332 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:19:17,332 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:19:17,385 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:19:17,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:19:17,401 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:19:17,402 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:19:17,403 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:19:17,404 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c [2018-07-24 14:19:17,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2da2fcd20/b63c01b7fc0d407dbb813082161f03f0/FLAGbded5a8c8 [2018-07-24 14:19:18,273 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:19:18,274 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label20_true-unreach-call.c [2018-07-24 14:19:18,315 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2da2fcd20/b63c01b7fc0d407dbb813082161f03f0/FLAGbded5a8c8 [2018-07-24 14:19:18,334 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2da2fcd20/b63c01b7fc0d407dbb813082161f03f0 [2018-07-24 14:19:18,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:19:18,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:19:18,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:19:18,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:19:18,354 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:19:18,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:19:18" (1/1) ... [2018-07-24 14:19:18,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8b2370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:18, skipping insertion in model container [2018-07-24 14:19:18,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:19:18" (1/1) ... [2018-07-24 14:19:18,716 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:19:20,107 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:19:20,127 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:19:21,076 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:19:21,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:21 WrapperNode [2018-07-24 14:19:21,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:19:21,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:19:21,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:19:21,404 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:19:21,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:21" (1/1) ... [2018-07-24 14:19:21,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:21" (1/1) ... [2018-07-24 14:19:21,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:19:21,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:19:21,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:19:21,743 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:19:22,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:21" (1/1) ... [2018-07-24 14:19:22,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:21" (1/1) ... [2018-07-24 14:19:22,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:21" (1/1) ... [2018-07-24 14:19:22,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:21" (1/1) ... [2018-07-24 14:19:22,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:21" (1/1) ... [2018-07-24 14:19:22,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:21" (1/1) ... [2018-07-24 14:19:23,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:21" (1/1) ... [2018-07-24 14:19:23,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:19:23,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:19:23,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:19:23,076 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:19:23,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:19:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:19:23,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:19:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:19:23,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:19:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:19:23,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:19:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:19:23,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:19:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:19:23,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:19:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:19:23,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:19:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:19:23,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:19:40,035 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:19:40,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:19:40 BoogieIcfgContainer [2018-07-24 14:19:40,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:19:40,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:19:40,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:19:40,040 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:19:40,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:19:18" (1/3) ... [2018-07-24 14:19:40,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4494eed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:19:40, skipping insertion in model container [2018-07-24 14:19:40,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:21" (2/3) ... [2018-07-24 14:19:40,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4494eed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:19:40, skipping insertion in model container [2018-07-24 14:19:40,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:19:40" (3/3) ... [2018-07-24 14:19:40,044 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label20_true-unreach-call.c [2018-07-24 14:19:40,053 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:19:40,062 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:19:40,124 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:19:40,125 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:19:40,125 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:19:40,125 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:19:40,125 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:19:40,125 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:19:40,125 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:19:40,126 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:19:40,126 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:19:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 14:19:40,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-07-24 14:19:40,182 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:19:40,183 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:19:40,184 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:19:40,189 INFO L82 PathProgramCache]: Analyzing trace with hash 768609348, now seen corresponding path program 1 times [2018-07-24 14:19:40,192 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:19:40,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:19:40,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:19:40,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:19:40,241 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:19:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:19:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:19:40,720 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:19:40,720 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:19:40,720 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:19:40,726 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:19:40,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:19:40,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:19:40,746 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-07-24 14:19:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:19:59,712 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-07-24 14:19:59,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:19:59,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-07-24 14:19:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:19:59,775 INFO L225 Difference]: With dead ends: 3968 [2018-07-24 14:19:59,775 INFO L226 Difference]: Without dead ends: 2842 [2018-07-24 14:19:59,789 INFO L573 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 [2018-07-24 14:19:59,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-07-24 14:19:59,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-07-24 14:19:59,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-07-24 14:19:59,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-07-24 14:19:59,954 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 62 [2018-07-24 14:19:59,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:19:59,955 INFO L471 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-07-24 14:19:59,955 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:19:59,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-07-24 14:19:59,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-24 14:19:59,963 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:19:59,963 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:19:59,964 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:19:59,964 INFO L82 PathProgramCache]: Analyzing trace with hash 513962144, now seen corresponding path program 1 times [2018-07-24 14:19:59,964 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:19:59,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:19:59,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:19:59,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:19:59,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:20:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:00,277 WARN L169 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:20:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:20:00,439 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:20:00,439 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:20:00,439 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:20:00,441 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:20:00,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:20:00,442 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:20:00,442 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 6 states. [2018-07-24 14:20:22,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:20:22,023 INFO L93 Difference]: Finished difference Result 7236 states and 13035 transitions. [2018-07-24 14:20:22,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:20:22,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-07-24 14:20:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:20:22,054 INFO L225 Difference]: With dead ends: 7236 [2018-07-24 14:20:22,054 INFO L226 Difference]: Without dead ends: 5261 [2018-07-24 14:20:22,066 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:20:22,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2018-07-24 14:20:22,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5234. [2018-07-24 14:20:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5234 states. [2018-07-24 14:20:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8155 transitions. [2018-07-24 14:20:22,210 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8155 transitions. Word has length 132 [2018-07-24 14:20:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:20:22,211 INFO L471 AbstractCegarLoop]: Abstraction has 5234 states and 8155 transitions. [2018-07-24 14:20:22,211 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:20:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8155 transitions. [2018-07-24 14:20:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-07-24 14:20:22,216 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:20:22,216 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:20:22,217 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:20:22,217 INFO L82 PathProgramCache]: Analyzing trace with hash -2043801860, now seen corresponding path program 1 times [2018-07-24 14:20:22,217 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:20:22,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:22,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:22,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:22,219 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:20:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:20:22,484 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:20:22,485 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:20:22,485 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:20:22,485 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:20:22,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:20:22,486 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:20:22,486 INFO L87 Difference]: Start difference. First operand 5234 states and 8155 transitions. Second operand 6 states. [2018-07-24 14:20:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:20:42,022 INFO L93 Difference]: Finished difference Result 16620 states and 27134 transitions. [2018-07-24 14:20:42,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:20:42,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-07-24 14:20:42,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:20:42,085 INFO L225 Difference]: With dead ends: 16620 [2018-07-24 14:20:42,085 INFO L226 Difference]: Without dead ends: 11392 [2018-07-24 14:20:42,108 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:20:42,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11392 states. [2018-07-24 14:20:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11392 to 11315. [2018-07-24 14:20:42,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11315 states. [2018-07-24 14:20:42,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11315 states to 11315 states and 16081 transitions. [2018-07-24 14:20:42,444 INFO L78 Accepts]: Start accepts. Automaton has 11315 states and 16081 transitions. Word has length 134 [2018-07-24 14:20:42,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:20:42,445 INFO L471 AbstractCegarLoop]: Abstraction has 11315 states and 16081 transitions. [2018-07-24 14:20:42,445 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:20:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 11315 states and 16081 transitions. [2018-07-24 14:20:42,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-24 14:20:42,449 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:20:42,450 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:20:42,450 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:20:42,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1999061089, now seen corresponding path program 1 times [2018-07-24 14:20:42,452 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:20:42,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:42,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:42,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:42,453 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:20:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:20:42,735 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:20:42,735 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:20:42,735 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:20:42,736 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:20:42,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:20:42,737 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:20:42,737 INFO L87 Difference]: Start difference. First operand 11315 states and 16081 transitions. Second operand 6 states. [2018-07-24 14:20:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:20:56,497 INFO L93 Difference]: Finished difference Result 33995 states and 52586 transitions. [2018-07-24 14:20:56,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:20:56,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-07-24 14:20:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:20:56,625 INFO L225 Difference]: With dead ends: 33995 [2018-07-24 14:20:56,626 INFO L226 Difference]: Without dead ends: 22686 [2018-07-24 14:20:56,694 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:20:56,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22686 states. [2018-07-24 14:20:57,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22686 to 22388. [2018-07-24 14:20:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22388 states. [2018-07-24 14:20:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22388 states to 22388 states and 32216 transitions. [2018-07-24 14:20:57,318 INFO L78 Accepts]: Start accepts. Automaton has 22388 states and 32216 transitions. Word has length 145 [2018-07-24 14:20:57,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:20:57,318 INFO L471 AbstractCegarLoop]: Abstraction has 22388 states and 32216 transitions. [2018-07-24 14:20:57,318 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:20:57,319 INFO L276 IsEmpty]: Start isEmpty. Operand 22388 states and 32216 transitions. [2018-07-24 14:20:57,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-24 14:20:57,323 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:20:57,323 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:20:57,324 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:20:57,324 INFO L82 PathProgramCache]: Analyzing trace with hash -564804348, now seen corresponding path program 1 times [2018-07-24 14:20:57,324 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:20:57,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:57,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:57,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:57,328 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:20:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:20:57,530 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:20:57,531 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:20:57,531 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:20:57,531 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:20:57,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:20:57,532 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:20:57,532 INFO L87 Difference]: Start difference. First operand 22388 states and 32216 transitions. Second operand 3 states. [2018-07-24 14:21:05,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:21:05,582 INFO L93 Difference]: Finished difference Result 44772 states and 64605 transitions. [2018-07-24 14:21:05,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:21:05,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2018-07-24 14:21:05,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:21:05,676 INFO L225 Difference]: With dead ends: 44772 [2018-07-24 14:21:05,676 INFO L226 Difference]: Without dead ends: 22390 [2018-07-24 14:21:05,728 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:21:05,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22390 states. [2018-07-24 14:21:06,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22390 to 22371. [2018-07-24 14:21:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22371 states. [2018-07-24 14:21:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22371 states to 22371 states and 29251 transitions. [2018-07-24 14:21:06,245 INFO L78 Accepts]: Start accepts. Automaton has 22371 states and 29251 transitions. Word has length 178 [2018-07-24 14:21:06,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:21:06,246 INFO L471 AbstractCegarLoop]: Abstraction has 22371 states and 29251 transitions. [2018-07-24 14:21:06,247 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:21:06,247 INFO L276 IsEmpty]: Start isEmpty. Operand 22371 states and 29251 transitions. [2018-07-24 14:21:06,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-07-24 14:21:06,252 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:06,252 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:21:06,252 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:21:06,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1159303874, now seen corresponding path program 1 times [2018-07-24 14:21:06,253 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:06,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:06,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:06,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:06,256 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:21:06,521 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:21:06,521 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:21:06,521 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:21:06,522 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:21:06,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:21:06,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:21:06,523 INFO L87 Difference]: Start difference. First operand 22371 states and 29251 transitions. Second operand 4 states. [2018-07-24 14:21:17,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:21:17,634 INFO L93 Difference]: Finished difference Result 64552 states and 89370 transitions. [2018-07-24 14:21:17,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:21:17,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2018-07-24 14:21:17,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:21:17,778 INFO L225 Difference]: With dead ends: 64552 [2018-07-24 14:21:17,778 INFO L226 Difference]: Without dead ends: 42187 [2018-07-24 14:21:17,832 INFO L573 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 [2018-07-24 14:21:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42187 states. [2018-07-24 14:21:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42187 to 42183. [2018-07-24 14:21:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42183 states. [2018-07-24 14:21:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42183 states to 42183 states and 55586 transitions. [2018-07-24 14:21:18,591 INFO L78 Accepts]: Start accepts. Automaton has 42183 states and 55586 transitions. Word has length 183 [2018-07-24 14:21:18,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:21:18,592 INFO L471 AbstractCegarLoop]: Abstraction has 42183 states and 55586 transitions. [2018-07-24 14:21:18,592 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:21:18,594 INFO L276 IsEmpty]: Start isEmpty. Operand 42183 states and 55586 transitions. [2018-07-24 14:21:18,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-07-24 14:21:18,602 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:18,603 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:21:18,603 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:21:18,603 INFO L82 PathProgramCache]: Analyzing trace with hash -149121228, now seen corresponding path program 1 times [2018-07-24 14:21:18,604 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:18,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:18,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:18,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:18,606 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:21:19,104 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:21:19,104 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:21:19,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:19,116 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:21:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:19,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:21:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-07-24 14:21:19,463 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:21:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:21:19,989 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:21:19,989 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 14:21:19,989 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:21:19,990 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:21:19,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:21:19,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:21:19,991 INFO L87 Difference]: Start difference. First operand 42183 states and 55586 transitions. Second operand 5 states. [2018-07-24 14:21:41,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:21:41,728 INFO L93 Difference]: Finished difference Result 122868 states and 174544 transitions. [2018-07-24 14:21:41,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:21:41,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2018-07-24 14:21:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:21:42,153 INFO L225 Difference]: With dead ends: 122868 [2018-07-24 14:21:42,154 INFO L226 Difference]: Without dead ends: 80691 [2018-07-24 14:21:42,403 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 474 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:21:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80691 states. [2018-07-24 14:21:44,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80691 to 79422. [2018-07-24 14:21:44,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79422 states. [2018-07-24 14:21:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79422 states to 79422 states and 108446 transitions. [2018-07-24 14:21:44,396 INFO L78 Accepts]: Start accepts. Automaton has 79422 states and 108446 transitions. Word has length 238 [2018-07-24 14:21:44,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:21:44,397 INFO L471 AbstractCegarLoop]: Abstraction has 79422 states and 108446 transitions. [2018-07-24 14:21:44,397 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:21:44,397 INFO L276 IsEmpty]: Start isEmpty. Operand 79422 states and 108446 transitions. [2018-07-24 14:21:44,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-07-24 14:21:44,410 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:44,410 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:21:44,410 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:21:44,410 INFO L82 PathProgramCache]: Analyzing trace with hash -315510288, now seen corresponding path program 1 times [2018-07-24 14:21:44,411 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:44,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:44,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:44,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:44,412 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:21:44,698 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:21:44,699 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:21:44,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:44,708 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:21:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:44,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:21:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-07-24 14:21:45,335 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:21:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:21:46,199 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:21:46,199 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 14:21:46,199 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:21:46,200 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:21:46,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:21:46,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:21:46,200 INFO L87 Difference]: Start difference. First operand 79422 states and 108446 transitions. Second operand 5 states. [2018-07-24 14:22:04,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:04,906 INFO L93 Difference]: Finished difference Result 197102 states and 292662 transitions. [2018-07-24 14:22:04,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:22:04,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2018-07-24 14:22:04,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:05,464 INFO L225 Difference]: With dead ends: 197102 [2018-07-24 14:22:05,464 INFO L226 Difference]: Without dead ends: 117686 [2018-07-24 14:22:05,655 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 478 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:22:05,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117686 states. [2018-07-24 14:22:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117686 to 117113. [2018-07-24 14:22:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117113 states. [2018-07-24 14:22:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117113 states to 117113 states and 169050 transitions. [2018-07-24 14:22:08,247 INFO L78 Accepts]: Start accepts. Automaton has 117113 states and 169050 transitions. Word has length 240 [2018-07-24 14:22:08,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:22:08,248 INFO L471 AbstractCegarLoop]: Abstraction has 117113 states and 169050 transitions. [2018-07-24 14:22:08,248 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:22:08,248 INFO L276 IsEmpty]: Start isEmpty. Operand 117113 states and 169050 transitions. [2018-07-24 14:22:08,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-07-24 14:22:08,259 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:08,260 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:22:08,260 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:22:08,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1190880928, now seen corresponding path program 1 times [2018-07-24 14:22:08,260 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:08,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:08,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:08,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:08,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:08,552 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:22:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:22:08,601 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:22:08,601 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:22:09,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:09,281 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:22:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:09,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:22:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 14:22:09,492 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:22:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 115 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:22:10,408 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:22:10,409 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 14:22:10,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:10,434 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:22:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:10,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:22:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:22:10,851 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:22:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:22:11,203 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 14:22:11,203 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 7, 8, 5] total 17 [2018-07-24 14:22:11,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:11,204 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:22:11,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:22:11,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-07-24 14:22:11,205 INFO L87 Difference]: Start difference. First operand 117113 states and 169050 transitions. Second operand 5 states. [2018-07-24 14:22:21,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:21,492 INFO L93 Difference]: Finished difference Result 234820 states and 341868 transitions. [2018-07-24 14:22:21,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:22:21,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2018-07-24 14:22:21,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:21,820 INFO L225 Difference]: With dead ends: 234820 [2018-07-24 14:22:21,820 INFO L226 Difference]: Without dead ends: 117713 [2018-07-24 14:22:21,994 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 999 GetRequests, 976 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:22:22,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117713 states. [2018-07-24 14:22:23,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117713 to 117592. [2018-07-24 14:22:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117592 states. [2018-07-24 14:22:23,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117592 states to 117592 states and 149338 transitions. [2018-07-24 14:22:23,880 INFO L78 Accepts]: Start accepts. Automaton has 117592 states and 149338 transitions. Word has length 248 [2018-07-24 14:22:23,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:22:23,881 INFO L471 AbstractCegarLoop]: Abstraction has 117592 states and 149338 transitions. [2018-07-24 14:22:23,881 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:22:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 117592 states and 149338 transitions. [2018-07-24 14:22:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-07-24 14:22:23,894 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:23,894 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:22:23,894 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:22:23,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1477310436, now seen corresponding path program 1 times [2018-07-24 14:22:23,895 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:23,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:23,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:23,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:23,896 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:24,205 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:22:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 14:22:24,544 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:22:24,544 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:22:24,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:24,561 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:22:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:24,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:22:24,909 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:22:24,909 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:22:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 217 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:22:25,090 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:22:25,090 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:22:25,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:25,107 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:22:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:25,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:22:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 14:22:25,604 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:22:26,945 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 14:22:26,947 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 14:22:26,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 12 [2018-07-24 14:22:26,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:26,948 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:22:26,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:22:26,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:22:26,949 INFO L87 Difference]: Start difference. First operand 117592 states and 149338 transitions. Second operand 5 states. [2018-07-24 14:22:37,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:37,877 INFO L93 Difference]: Finished difference Result 234070 states and 297829 transitions. [2018-07-24 14:22:37,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:22:37,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 289 [2018-07-24 14:22:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:38,182 INFO L225 Difference]: With dead ends: 234070 [2018-07-24 14:22:38,182 INFO L226 Difference]: Without dead ends: 117288 [2018-07-24 14:22:38,373 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1145 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:22:38,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117288 states. [2018-07-24 14:22:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117288 to 117262. [2018-07-24 14:22:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117262 states. [2018-07-24 14:22:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117262 states to 117262 states and 145461 transitions. [2018-07-24 14:22:40,873 INFO L78 Accepts]: Start accepts. Automaton has 117262 states and 145461 transitions. Word has length 289 [2018-07-24 14:22:40,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:22:40,874 INFO L471 AbstractCegarLoop]: Abstraction has 117262 states and 145461 transitions. [2018-07-24 14:22:40,874 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:22:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 117262 states and 145461 transitions. [2018-07-24 14:22:40,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-07-24 14:22:40,895 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:40,895 INFO L353 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:22:40,896 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:22:40,896 INFO L82 PathProgramCache]: Analyzing trace with hash 380337346, now seen corresponding path program 1 times [2018-07-24 14:22:40,896 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:40,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:40,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:40,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:40,897 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 165 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 14:22:41,184 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:22:41,184 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:22:41,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:41,195 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:22:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:41,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:22:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-07-24 14:22:41,526 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:22:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 165 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 14:22:41,732 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:22:41,732 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 14:22:41,732 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:41,733 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:22:41,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:22:41,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:22:41,733 INFO L87 Difference]: Start difference. First operand 117262 states and 145461 transitions. Second operand 5 states. [2018-07-24 14:22:56,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:56,249 INFO L93 Difference]: Finished difference Result 288914 states and 366276 transitions. [2018-07-24 14:22:56,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:22:56,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2018-07-24 14:22:56,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:56,705 INFO L225 Difference]: With dead ends: 288914 [2018-07-24 14:22:56,705 INFO L226 Difference]: Without dead ends: 172462 [2018-07-24 14:22:56,922 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 659 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:22:57,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172462 states. [2018-07-24 14:23:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172462 to 172143. [2018-07-24 14:23:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172143 states. [2018-07-24 14:23:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172143 states to 172143 states and 208120 transitions. [2018-07-24 14:23:00,691 INFO L78 Accepts]: Start accepts. Automaton has 172143 states and 208120 transitions. Word has length 332 [2018-07-24 14:23:00,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:00,691 INFO L471 AbstractCegarLoop]: Abstraction has 172143 states and 208120 transitions. [2018-07-24 14:23:00,692 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:23:00,692 INFO L276 IsEmpty]: Start isEmpty. Operand 172143 states and 208120 transitions. [2018-07-24 14:23:00,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-07-24 14:23:00,705 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:00,705 INFO L353 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:23:00,705 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:00,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1978961966, now seen corresponding path program 1 times [2018-07-24 14:23:00,706 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:00,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:00,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:00,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:00,706 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-07-24 14:23:01,047 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:01,047 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:23:01,047 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:01,048 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:23:01,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:23:01,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:23:01,049 INFO L87 Difference]: Start difference. First operand 172143 states and 208120 transitions. Second operand 4 states. Received shutdown request... [2018-07-24 14:23:02,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-24 14:23:02,787 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:23:02,795 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:23:02,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:23:02 BoogieIcfgContainer [2018-07-24 14:23:02,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:23:02,796 INFO L168 Benchmark]: Toolchain (without parser) took 224450.52 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -696.2 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-07-24 14:23:02,799 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:23:02,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3055.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 340.9 MB). Peak memory consumption was 340.9 MB. Max. memory is 7.1 GB. [2018-07-24 14:23:02,800 INFO L168 Benchmark]: Boogie Procedure Inliner took 338.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:23:02,801 INFO L168 Benchmark]: Boogie Preprocessor took 1333.24 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 987.8 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:23:02,803 INFO L168 Benchmark]: RCFGBuilder took 16960.26 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 146.8 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 97.3 MB). Peak memory consumption was 741.2 MB. Max. memory is 7.1 GB. [2018-07-24 14:23:02,805 INFO L168 Benchmark]: TraceAbstraction took 202758.55 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 1.0 GB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 124.6 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-24 14:23:02,811 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 3055.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 340.9 MB). Peak memory consumption was 340.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 338.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1333.24 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 987.8 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16960.26 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 146.8 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 97.3 MB). Peak memory consumption was 741.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202758.55 ms. Allocated memory was 2.7 GB in the beginning and 3.7 GB in the end (delta: 1.0 GB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 124.6 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 177]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 177). Cancelled while BasicCegarLoop was constructing difference of abstraction (172143states) and interpolant automaton (currently 2 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (18 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 202.6s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 174.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7292 SDtfs, 33830 SDslu, 5174 SDs, 0 SdLazy, 65079 SolverSat, 14044 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 143.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3856 GetRequests, 3752 SyntacticMatches, 19 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172143occurred in iteration=11, 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: 15.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 3594 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 4408 NumberOfCodeBlocks, 4408 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 6266 ConstructedInterpolants, 0 QuantifiedInterpolants, 4598546 SizeOfPredicates, 10 NumberOfNonLiveVariables, 3472 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 26 InterpolantComputations, 12 PerfectInterpolantSequences, 4287/4906 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/Problem13_label20_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-23-02-837.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label20_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-23-02-837.csv Completed graceful shutdown