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_label40_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:59:33,151 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:59:33,153 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:59:33,172 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:59:33,172 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:59:33,176 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:59:33,177 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:59:33,179 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:59:33,181 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:59:33,182 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:59:33,183 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:59:33,183 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:59:33,184 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:59:33,185 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:59:33,186 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:59:33,187 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:59:33,188 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:59:33,190 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:59:33,192 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:59:33,193 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:59:33,194 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:59:33,196 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:59:33,198 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:59:33,198 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:59:33,199 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:59:33,200 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:59:33,201 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:59:33,201 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:59:33,202 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:59:33,208 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:59:33,209 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:59:33,210 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:59:33,210 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:59:33,210 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:59:33,211 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:59:33,212 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:59:33,212 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 11:59:33,242 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:59:33,243 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:59:33,244 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:59:33,244 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:59:33,245 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:59:33,245 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:59:33,245 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:59:33,245 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:59:33,246 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:59:33,246 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:59:33,246 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:59:33,247 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:59:33,247 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:59:33,247 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:59:33,248 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:59:33,248 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:59:33,248 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:59:33,248 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:59:33,248 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:59:33,249 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:59:33,249 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:59:33,249 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:59:33,251 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:59:33,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:59:33,251 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:59:33,251 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:59:33,252 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:59:33,252 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:59:33,252 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:59:33,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:59:33,253 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:59:33,253 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:59:33,253 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:59:33,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:59:33,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:59:33,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:59:33,343 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:59:33,343 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:59:33,344 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label40_false-unreach-call.c [2018-07-24 11:59:33,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f240f8717/871177fa2b8c4da4adcb382901e0f489/FLAGeca353c14 [2018-07-24 11:59:34,197 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:59:34,198 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label40_false-unreach-call.c [2018-07-24 11:59:34,252 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f240f8717/871177fa2b8c4da4adcb382901e0f489/FLAGeca353c14 [2018-07-24 11:59:34,268 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f240f8717/871177fa2b8c4da4adcb382901e0f489 [2018-07-24 11:59:34,280 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:59:34,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:59:34,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:59:34,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:59:34,292 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:59:34,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:59:34" (1/1) ... [2018-07-24 11:59:34,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d113511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:34, skipping insertion in model container [2018-07-24 11:59:34,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:59:34" (1/1) ... [2018-07-24 11:59:34,663 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:59:35,835 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:59:35,855 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:59:36,670 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:59:37,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:37 WrapperNode [2018-07-24 11:59:37,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:59:37,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:59:37,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:59:37,012 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:59:37,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:37" (1/1) ... [2018-07-24 11:59:37,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:37" (1/1) ... [2018-07-24 11:59:37,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:59:37,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:59:37,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:59:37,315 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:59:38,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:37" (1/1) ... [2018-07-24 11:59:38,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:37" (1/1) ... [2018-07-24 11:59:38,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:37" (1/1) ... [2018-07-24 11:59:38,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:37" (1/1) ... [2018-07-24 11:59:38,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:37" (1/1) ... [2018-07-24 11:59:38,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:37" (1/1) ... [2018-07-24 11:59:38,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:37" (1/1) ... [2018-07-24 11:59:38,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:59:38,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:59:38,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:59:38,616 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:59:38,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:59:38,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:59:38,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:59:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:59:38,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:59:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:59:38,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:59:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:59:38,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:59:38,698 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:59:38,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:59:38,698 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:59:38,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:59:38,699 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:59:38,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:59:52,107 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:59:52,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:59:52 BoogieIcfgContainer [2018-07-24 11:59:52,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:59:52,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:59:52,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:59:52,112 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:59:52,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:59:34" (1/3) ... [2018-07-24 11:59:52,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45084036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:59:52, skipping insertion in model container [2018-07-24 11:59:52,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:37" (2/3) ... [2018-07-24 11:59:52,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45084036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:59:52, skipping insertion in model container [2018-07-24 11:59:52,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:59:52" (3/3) ... [2018-07-24 11:59:52,116 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label40_false-unreach-call.c [2018-07-24 11:59:52,126 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:59:52,135 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:59:52,204 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:59:52,205 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:59:52,205 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:59:52,205 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:59:52,205 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:59:52,205 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:59:52,206 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:59:52,206 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:59:52,206 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:59:52,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 11:59:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-07-24 11:59:52,264 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:59:52,265 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] [2018-07-24 11:59:52,266 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:59:52,272 INFO L82 PathProgramCache]: Analyzing trace with hash -832376069, now seen corresponding path program 1 times [2018-07-24 11:59:52,275 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:59:52,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:59:52,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:52,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:59:52,329 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:59:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:52,779 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:59:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:59:52,886 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:59:52,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:59:52,887 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:59:52,892 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:59:52,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:59:52,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:59:52,912 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-07-24 12:00:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:00:04,635 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-07-24 12:00:04,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:00:04,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-07-24 12:00:04,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:00:04,679 INFO L225 Difference]: With dead ends: 3097 [2018-07-24 12:00:04,680 INFO L226 Difference]: Without dead ends: 1975 [2018-07-24 12:00:04,691 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:00:04,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-07-24 12:00:04,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-07-24 12:00:04,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-07-24 12:00:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-07-24 12:00:04,866 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 35 [2018-07-24 12:00:04,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:00:04,866 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-07-24 12:00:04,867 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:00:04,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-07-24 12:00:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-07-24 12:00:04,880 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:00:04,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:04,881 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:00:04,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1761727722, now seen corresponding path program 1 times [2018-07-24 12:00:04,882 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:00:04,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:04,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:00:04,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:04,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:00:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:00:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:00:05,212 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:00:05,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:00:05,212 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:00:05,214 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:00:05,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:00:05,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:00:05,215 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-07-24 12:00:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:00:27,025 INFO L93 Difference]: Finished difference Result 5737 states and 9691 transitions. [2018-07-24 12:00:27,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:00:27,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-07-24 12:00:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:00:27,060 INFO L225 Difference]: With dead ends: 5737 [2018-07-24 12:00:27,060 INFO L226 Difference]: Without dead ends: 3769 [2018-07-24 12:00:27,067 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:00:27,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2018-07-24 12:00:27,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3685. [2018-07-24 12:00:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3685 states. [2018-07-24 12:00:27,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 5659 transitions. [2018-07-24 12:00:27,191 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 5659 transitions. Word has length 111 [2018-07-24 12:00:27,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:00:27,191 INFO L471 AbstractCegarLoop]: Abstraction has 3685 states and 5659 transitions. [2018-07-24 12:00:27,191 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:00:27,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 5659 transitions. [2018-07-24 12:00:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-07-24 12:00:27,195 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:00:27,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:27,196 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:00:27,196 INFO L82 PathProgramCache]: Analyzing trace with hash -2119275194, now seen corresponding path program 1 times [2018-07-24 12:00:27,197 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:00:27,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:27,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:00:27,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:27,198 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:00:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:00:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:00:27,625 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:00:27,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:00:27,626 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:00:27,626 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:00:27,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:00:27,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:00:27,627 INFO L87 Difference]: Start difference. First operand 3685 states and 5659 transitions. Second operand 6 states. [2018-07-24 12:00:38,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:00:38,191 INFO L93 Difference]: Finished difference Result 10870 states and 17247 transitions. [2018-07-24 12:00:38,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:00:38,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-07-24 12:00:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:00:38,234 INFO L225 Difference]: With dead ends: 10870 [2018-07-24 12:00:38,234 INFO L226 Difference]: Without dead ends: 7191 [2018-07-24 12:00:38,247 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:00:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7191 states. [2018-07-24 12:00:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7191 to 7142. [2018-07-24 12:00:38,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7142 states. [2018-07-24 12:00:38,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7142 states to 7142 states and 10338 transitions. [2018-07-24 12:00:38,426 INFO L78 Accepts]: Start accepts. Automaton has 7142 states and 10338 transitions. Word has length 125 [2018-07-24 12:00:38,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:00:38,427 INFO L471 AbstractCegarLoop]: Abstraction has 7142 states and 10338 transitions. [2018-07-24 12:00:38,427 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:00:38,427 INFO L276 IsEmpty]: Start isEmpty. Operand 7142 states and 10338 transitions. [2018-07-24 12:00:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-24 12:00:38,430 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:00:38,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:38,431 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:00:38,431 INFO L82 PathProgramCache]: Analyzing trace with hash -358112410, now seen corresponding path program 1 times [2018-07-24 12:00:38,431 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:00:38,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:38,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:00:38,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:38,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:00:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:00:38,716 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:00:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:00:39,007 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:00:39,007 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:00:39,008 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:00:39,008 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:00:39,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:00:39,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:00:39,009 INFO L87 Difference]: Start difference. First operand 7142 states and 10338 transitions. Second operand 6 states. [2018-07-24 12:00:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:00:53,497 INFO L93 Difference]: Finished difference Result 24013 states and 36811 transitions. [2018-07-24 12:00:53,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:00:53,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-07-24 12:00:53,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:00:53,590 INFO L225 Difference]: With dead ends: 24013 [2018-07-24 12:00:53,591 INFO L226 Difference]: Without dead ends: 16877 [2018-07-24 12:00:53,634 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 12:00:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16877 states. [2018-07-24 12:00:54,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16877 to 16670. [2018-07-24 12:00:54,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16670 states. [2018-07-24 12:00:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16670 states to 16670 states and 23889 transitions. [2018-07-24 12:00:54,080 INFO L78 Accepts]: Start accepts. Automaton has 16670 states and 23889 transitions. Word has length 141 [2018-07-24 12:00:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:00:54,081 INFO L471 AbstractCegarLoop]: Abstraction has 16670 states and 23889 transitions. [2018-07-24 12:00:54,081 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:00:54,081 INFO L276 IsEmpty]: Start isEmpty. Operand 16670 states and 23889 transitions. [2018-07-24 12:00:54,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-24 12:00:54,084 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:00:54,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:54,084 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:00:54,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1574238762, now seen corresponding path program 1 times [2018-07-24 12:00:54,085 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:00:54,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:54,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:00:54,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:54,089 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:00:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:00:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:00:54,441 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:00:54,441 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:00:54,442 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:00:54,442 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:00:54,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:00:54,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:00:54,443 INFO L87 Difference]: Start difference. First operand 16670 states and 23889 transitions. Second operand 5 states. [2018-07-24 12:01:25,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:01:25,219 INFO L93 Difference]: Finished difference Result 55150 states and 84120 transitions. [2018-07-24 12:01:25,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:01:25,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-07-24 12:01:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:01:25,382 INFO L225 Difference]: With dead ends: 55150 [2018-07-24 12:01:25,382 INFO L226 Difference]: Without dead ends: 38486 [2018-07-24 12:01:25,469 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:01:25,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38486 states. [2018-07-24 12:01:26,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38486 to 38223. [2018-07-24 12:01:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38223 states. [2018-07-24 12:01:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38223 states to 38223 states and 55897 transitions. [2018-07-24 12:01:26,388 INFO L78 Accepts]: Start accepts. Automaton has 38223 states and 55897 transitions. Word has length 143 [2018-07-24 12:01:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:01:26,389 INFO L471 AbstractCegarLoop]: Abstraction has 38223 states and 55897 transitions. [2018-07-24 12:01:26,389 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:01:26,389 INFO L276 IsEmpty]: Start isEmpty. Operand 38223 states and 55897 transitions. [2018-07-24 12:01:26,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-24 12:01:26,392 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:01:26,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:26,392 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:01:26,392 INFO L82 PathProgramCache]: Analyzing trace with hash -339359558, now seen corresponding path program 1 times [2018-07-24 12:01:26,392 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:01:26,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:26,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:26,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:26,394 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:01:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:01:27,082 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:01:27,083 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 12:01:27,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:27,099 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:01:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:27,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:01:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:01:27,470 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:01:27,760 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 12:01:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:01:28,611 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:01:28,611 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-07-24 12:01:28,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:01:28,612 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:01:28,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:01:28,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:01:28,613 INFO L87 Difference]: Start difference. First operand 38223 states and 55897 transitions. Second operand 6 states. [2018-07-24 12:01:49,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:01:49,048 INFO L93 Difference]: Finished difference Result 122275 states and 192677 transitions. [2018-07-24 12:01:49,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:01:49,056 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-07-24 12:01:49,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:01:49,449 INFO L225 Difference]: With dead ends: 122275 [2018-07-24 12:01:49,449 INFO L226 Difference]: Without dead ends: 84058 [2018-07-24 12:01:49,574 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 300 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:01:49,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84058 states. [2018-07-24 12:01:51,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84058 to 73491. [2018-07-24 12:01:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73491 states. [2018-07-24 12:01:51,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73491 states to 73491 states and 108594 transitions. [2018-07-24 12:01:51,662 INFO L78 Accepts]: Start accepts. Automaton has 73491 states and 108594 transitions. Word has length 151 [2018-07-24 12:01:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:01:51,663 INFO L471 AbstractCegarLoop]: Abstraction has 73491 states and 108594 transitions. [2018-07-24 12:01:51,663 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:01:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 73491 states and 108594 transitions. [2018-07-24 12:01:51,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-07-24 12:01:51,668 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:01:51,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:51,669 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:01:51,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1642603630, now seen corresponding path program 1 times [2018-07-24 12:01:51,669 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:01:51,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:51,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:51,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:51,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:01:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:51,899 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:01:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:01:51,962 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:01:51,962 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:01:51,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:01:51,963 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:01:51,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:01:51,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:01:51,964 INFO L87 Difference]: Start difference. First operand 73491 states and 108594 transitions. Second operand 6 states. [2018-07-24 12:02:07,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:02:07,730 INFO L93 Difference]: Finished difference Result 185660 states and 300897 transitions. [2018-07-24 12:02:07,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:02:07,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-07-24 12:02:07,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:02:08,279 INFO L225 Difference]: With dead ends: 185660 [2018-07-24 12:02:08,279 INFO L226 Difference]: Without dead ends: 112175 [2018-07-24 12:02:08,478 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 12:02:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112175 states. [2018-07-24 12:02:11,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112175 to 106832. [2018-07-24 12:02:11,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106832 states. [2018-07-24 12:02:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106832 states to 106832 states and 159501 transitions. [2018-07-24 12:02:11,580 INFO L78 Accepts]: Start accepts. Automaton has 106832 states and 159501 transitions. Word has length 171 [2018-07-24 12:02:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:02:11,581 INFO L471 AbstractCegarLoop]: Abstraction has 106832 states and 159501 transitions. [2018-07-24 12:02:11,581 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:02:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 106832 states and 159501 transitions. [2018-07-24 12:02:11,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-24 12:02:11,586 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:02:11,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:11,587 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:02:11,587 INFO L82 PathProgramCache]: Analyzing trace with hash 856471816, now seen corresponding path program 1 times [2018-07-24 12:02:11,587 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:02:11,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:02:11,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:02:11,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:02:11,589 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:02:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:02:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:02:11,944 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:02:11,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 12:02:11,945 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:02:11,945 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 12:02:11,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 12:02:11,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:02:11,946 INFO L87 Difference]: Start difference. First operand 106832 states and 159501 transitions. Second operand 7 states. [2018-07-24 12:02:38,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:02:38,717 INFO L93 Difference]: Finished difference Result 291280 states and 494947 transitions. [2018-07-24 12:02:38,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 12:02:38,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2018-07-24 12:02:38,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:02:39,762 INFO L225 Difference]: With dead ends: 291280 [2018-07-24 12:02:39,763 INFO L226 Difference]: Without dead ends: 184454 [2018-07-24 12:02:40,051 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:02:40,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184454 states. [2018-07-24 12:02:44,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184454 to 180246. [2018-07-24 12:02:44,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180246 states. [2018-07-24 12:02:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180246 states to 180246 states and 278915 transitions. [2018-07-24 12:02:44,831 INFO L78 Accepts]: Start accepts. Automaton has 180246 states and 278915 transitions. Word has length 182 [2018-07-24 12:02:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:02:44,831 INFO L471 AbstractCegarLoop]: Abstraction has 180246 states and 278915 transitions. [2018-07-24 12:02:44,831 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 12:02:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 180246 states and 278915 transitions. [2018-07-24 12:02:44,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-24 12:02:44,837 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:02:44,837 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:02:44,837 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:02:44,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1531489020, now seen corresponding path program 1 times [2018-07-24 12:02:44,838 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:02:44,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:02:44,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:02:44,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:02:44,839 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:02:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:02:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 56 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:02:45,068 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:02:45,068 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 12:02:46,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:02:46,668 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:02:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:02:46,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:02:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-07-24 12:02:46,887 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:02:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 56 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:02:47,072 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:02:47,072 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 12:02:47,072 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:02:47,073 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:02:47,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:02:47,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:02:47,074 INFO L87 Difference]: Start difference. First operand 180246 states and 278915 transitions. Second operand 5 states. [2018-07-24 12:03:15,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:03:15,905 INFO L93 Difference]: Finished difference Result 430500 states and 718930 transitions. [2018-07-24 12:03:15,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:03:15,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2018-07-24 12:03:15,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:03:17,337 INFO L225 Difference]: With dead ends: 430500 [2018-07-24 12:03:17,337 INFO L226 Difference]: Without dead ends: 250260 [2018-07-24 12:03:17,641 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 391 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:03:17,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250260 states. [2018-07-24 12:03:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250260 to 249610. [2018-07-24 12:03:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249610 states. [2018-07-24 12:03:23,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249610 states to 249610 states and 393925 transitions. [2018-07-24 12:03:23,073 INFO L78 Accepts]: Start accepts. Automaton has 249610 states and 393925 transitions. Word has length 198 [2018-07-24 12:03:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:03:23,074 INFO L471 AbstractCegarLoop]: Abstraction has 249610 states and 393925 transitions. [2018-07-24 12:03:23,074 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:03:23,074 INFO L276 IsEmpty]: Start isEmpty. Operand 249610 states and 393925 transitions. [2018-07-24 12:03:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-24 12:03:23,082 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:03:23,082 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:03:23,083 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:03:23,083 INFO L82 PathProgramCache]: Analyzing trace with hash 82967349, now seen corresponding path program 1 times [2018-07-24 12:03:23,083 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:03:23,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:23,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:23,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:23,084 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:03:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:03:23,288 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:03:23,288 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 12:03:23,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:23,299 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:03:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:23,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:03:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-24 12:03:23,497 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:03:23,660 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 12:03:23,682 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:03:23,682 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-07-24 12:03:23,682 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:03:23,683 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:03:23,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:03:23,683 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:03:23,683 INFO L87 Difference]: Start difference. First operand 249610 states and 393925 transitions. Second operand 3 states. Received shutdown request... [2018-07-24 12:03:27,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:03:27,901 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:03:27,906 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:03:27,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:03:27 BoogieIcfgContainer [2018-07-24 12:03:27,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:03:27,908 INFO L168 Benchmark]: Toolchain (without parser) took 233627.25 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-24 12:03:27,909 INFO L168 Benchmark]: CDTParser took 0.25 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 12:03:27,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2727.66 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: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:03:27,910 INFO L168 Benchmark]: Boogie Procedure Inliner took 302.61 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:03:27,911 INFO L168 Benchmark]: Boogie Preprocessor took 1300.69 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:03:27,912 INFO L168 Benchmark]: RCFGBuilder took 13492.94 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 149.9 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 94.3 MB). Peak memory consumption was 744.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:03:27,913 INFO L168 Benchmark]: TraceAbstraction took 215797.75 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: -367.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-24 12:03:27,918 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2727.66 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: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 302.61 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1300.69 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13492.94 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 149.9 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 94.3 MB). Peak memory consumption was 744.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215797.75 ms. Allocated memory was 2.7 GB in the beginning and 4.7 GB in the end (delta: 2.0 GB). Free memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: -367.9 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 96). Cancelled while BasicCegarLoop was constructing difference of abstraction (249610states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (82428 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 215.7s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 190.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4900 SDtfs, 33728 SDslu, 4927 SDs, 0 SdLazy, 61481 SolverSat, 14196 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 150.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1247 GetRequests, 1172 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249610occurred in iteration=9, 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: 17.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 21372 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 2070 NumberOfCodeBlocks, 2070 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2635 ConstructedInterpolants, 0 QuantifiedInterpolants, 1545776 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1189 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 850/1044 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_label40_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-03-27-933.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label40_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-03-27-933.csv Completed graceful shutdown