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/Problem12_label25_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:51:02,146 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:51:02,149 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:51:02,167 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:51:02,168 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:51:02,170 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:51:02,171 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:51:02,174 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:51:02,176 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:51:02,178 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:51:02,179 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:51:02,181 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:51:02,182 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:51:02,183 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:51:02,185 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:51:02,188 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:51:02,189 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:51:02,192 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:51:02,201 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:51:02,205 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:51:02,206 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:51:02,207 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:51:02,213 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:51:02,213 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:51:02,213 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:51:02,214 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:51:02,216 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:51:02,216 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:51:02,217 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:51:02,221 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:51:02,222 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:51:02,223 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:51:02,223 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:51:02,224 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:51:02,225 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:51:02,226 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:51:02,227 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 11:51:02,255 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:51:02,256 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:51:02,257 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:51:02,257 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:51:02,258 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:51:02,258 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:51:02,258 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:51:02,261 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:51:02,262 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:51:02,262 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:51:02,262 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:51:02,263 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:51:02,263 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:51:02,264 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:51:02,264 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:51:02,264 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:51:02,264 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:51:02,264 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:51:02,265 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:51:02,265 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:51:02,265 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:51:02,267 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:51:02,267 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:51:02,268 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:51:02,268 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:51:02,268 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:51:02,268 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:51:02,268 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:51:02,269 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:51:02,269 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:51:02,269 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:51:02,269 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:51:02,269 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:51:02,335 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:51:02,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:51:02,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:51:02,362 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:51:02,363 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:51:02,364 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label25_false-unreach-call.c [2018-07-24 11:51:02,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5d27bff/7ff784faeebf42a099f90d1143d9a93e/FLAGd7800cd2b [2018-07-24 11:51:03,242 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:51:03,243 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label25_false-unreach-call.c [2018-07-24 11:51:03,286 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5d27bff/7ff784faeebf42a099f90d1143d9a93e/FLAGd7800cd2b [2018-07-24 11:51:03,313 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5d27bff/7ff784faeebf42a099f90d1143d9a93e [2018-07-24 11:51:03,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:51:03,328 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:51:03,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:51:03,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:51:03,341 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:51:03,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:51:03" (1/1) ... [2018-07-24 11:51:03,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@496695e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:03, skipping insertion in model container [2018-07-24 11:51:03,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:51:03" (1/1) ... [2018-07-24 11:51:03,732 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:51:04,742 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:51:04,767 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:51:05,455 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:51:05,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:05 WrapperNode [2018-07-24 11:51:05,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:51:05,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:51:05,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:51:05,706 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:51:05,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:05" (1/1) ... [2018-07-24 11:51:05,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:05" (1/1) ... [2018-07-24 11:51:05,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:51:05,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:51:05,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:51:05,992 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:51:06,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:05" (1/1) ... [2018-07-24 11:51:06,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:05" (1/1) ... [2018-07-24 11:51:06,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:05" (1/1) ... [2018-07-24 11:51:06,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:05" (1/1) ... [2018-07-24 11:51:06,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:05" (1/1) ... [2018-07-24 11:51:06,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:05" (1/1) ... [2018-07-24 11:51:06,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:05" (1/1) ... [2018-07-24 11:51:06,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:51:06,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:51:06,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:51:06,963 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:51:06,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:05" (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 11:51:07,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:51:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:51:07,036 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 11:51:07,036 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 11:51:07,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:51:07,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:51:07,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:51:07,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:51:07,037 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 11:51:07,037 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 11:51:07,037 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 11:51:07,037 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 11:51:07,038 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 11:51:07,038 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 11:51:16,017 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:51:16,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:51:16 BoogieIcfgContainer [2018-07-24 11:51:16,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:51:16,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:51:16,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:51:16,022 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:51:16,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:51:03" (1/3) ... [2018-07-24 11:51:16,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9be718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:51:16, skipping insertion in model container [2018-07-24 11:51:16,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:51:05" (2/3) ... [2018-07-24 11:51:16,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9be718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:51:16, skipping insertion in model container [2018-07-24 11:51:16,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:51:16" (3/3) ... [2018-07-24 11:51:16,026 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label25_false-unreach-call.c [2018-07-24 11:51:16,035 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:51:16,045 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:51:16,105 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:51:16,106 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:51:16,106 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:51:16,106 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:51:16,107 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:51:16,107 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:51:16,107 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:51:16,107 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:51:16,107 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:51:16,152 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 11:51:16,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-07-24 11:51:16,166 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:51:16,168 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] [2018-07-24 11:51:16,169 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 11:51:16,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1951695668, now seen corresponding path program 1 times [2018-07-24 11:51:16,177 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:51:16,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:16,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:16,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:16,230 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:51:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:16,588 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 11:51:16,593 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:51:16,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:51:16,593 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:51:16,600 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:51:16,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:51:16,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:51:16,619 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 11:51:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:51:25,282 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 11:51:25,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:51:25,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-07-24 11:51:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:51:25,323 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 11:51:25,323 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 11:51:25,333 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:51:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 11:51:25,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 11:51:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 11:51:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-07-24 11:51:25,502 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 24 [2018-07-24 11:51:25,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:51:25,503 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-07-24 11:51:25,503 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:51:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-07-24 11:51:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-07-24 11:51:25,509 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:51:25,510 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:51:25,510 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 11:51:25,510 INFO L82 PathProgramCache]: Analyzing trace with hash 970093322, now seen corresponding path program 1 times [2018-07-24 11:51:25,511 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:51:25,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:25,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:25,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:25,515 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:51:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:51:25,834 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:51:25,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:51:25,834 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:51:25,836 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:51:25,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:51:25,837 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:51:25,837 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-07-24 11:51:42,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:51:42,228 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-07-24 11:51:42,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:51:42,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-07-24 11:51:42,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:51:42,266 INFO L225 Difference]: With dead ends: 6330 [2018-07-24 11:51:42,266 INFO L226 Difference]: Without dead ends: 4732 [2018-07-24 11:51:42,276 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 11:51:42,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-07-24 11:51:42,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-07-24 11:51:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-07-24 11:51:42,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-07-24 11:51:42,435 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 102 [2018-07-24 11:51:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:51:42,437 INFO L471 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-07-24 11:51:42,437 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:51:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-07-24 11:51:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-07-24 11:51:42,446 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:51:42,449 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:51:42,449 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 11:51:42,449 INFO L82 PathProgramCache]: Analyzing trace with hash 273922726, now seen corresponding path program 1 times [2018-07-24 11:51:42,450 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:51:42,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:42,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:42,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:42,451 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:51:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:51:42,892 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:51:42,892 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:51:42,893 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:51:42,893 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:51:42,893 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:51:42,894 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:51:42,894 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 6 states. [2018-07-24 11:51:53,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:51:53,366 INFO L93 Difference]: Finished difference Result 12725 states and 21801 transitions. [2018-07-24 11:51:53,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:51:53,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-07-24 11:51:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:51:53,415 INFO L225 Difference]: With dead ends: 12725 [2018-07-24 11:51:53,416 INFO L226 Difference]: Without dead ends: 8031 [2018-07-24 11:51:53,431 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:51:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8031 states. [2018-07-24 11:51:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8031 to 7944. [2018-07-24 11:51:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7944 states. [2018-07-24 11:51:53,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7944 states to 7944 states and 12951 transitions. [2018-07-24 11:51:53,660 INFO L78 Accepts]: Start accepts. Automaton has 7944 states and 12951 transitions. Word has length 104 [2018-07-24 11:51:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:51:53,661 INFO L471 AbstractCegarLoop]: Abstraction has 7944 states and 12951 transitions. [2018-07-24 11:51:53,661 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:51:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand 7944 states and 12951 transitions. [2018-07-24 11:51:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-24 11:51:53,669 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:51:53,670 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:51:53,670 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 11:51:53,671 INFO L82 PathProgramCache]: Analyzing trace with hash -980728113, now seen corresponding path program 1 times [2018-07-24 11:51:53,671 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:51:53,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:53,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:53,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:53,675 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:51:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:53,970 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:51:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:51:54,010 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:51:54,010 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:51:54,011 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:51:54,011 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:51:54,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:51:54,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:51:54,012 INFO L87 Difference]: Start difference. First operand 7944 states and 12951 transitions. Second operand 6 states. [2018-07-24 11:52:04,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:52:04,630 INFO L93 Difference]: Finished difference Result 20783 states and 34672 transitions. [2018-07-24 11:52:04,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:52:04,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2018-07-24 11:52:04,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:52:04,696 INFO L225 Difference]: With dead ends: 20783 [2018-07-24 11:52:04,697 INFO L226 Difference]: Without dead ends: 12845 [2018-07-24 11:52:04,735 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 11:52:04,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12845 states. [2018-07-24 11:52:05,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12845 to 12777. [2018-07-24 11:52:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12777 states. [2018-07-24 11:52:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12777 states to 12777 states and 19037 transitions. [2018-07-24 11:52:05,047 INFO L78 Accepts]: Start accepts. Automaton has 12777 states and 19037 transitions. Word has length 105 [2018-07-24 11:52:05,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:52:05,047 INFO L471 AbstractCegarLoop]: Abstraction has 12777 states and 19037 transitions. [2018-07-24 11:52:05,048 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:52:05,048 INFO L276 IsEmpty]: Start isEmpty. Operand 12777 states and 19037 transitions. [2018-07-24 11:52:05,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-07-24 11:52:05,049 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:52:05,050 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:52:05,050 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 11:52:05,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1596292742, now seen corresponding path program 1 times [2018-07-24 11:52:05,050 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:52:05,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:05,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:52:05,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:05,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:52:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:52:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:52:05,396 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:52:05,396 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:52:05,396 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:52:05,396 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:52:05,397 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:52:05,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:52:05,397 INFO L87 Difference]: Start difference. First operand 12777 states and 19037 transitions. Second operand 5 states. [2018-07-24 11:52:15,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:52:15,220 INFO L93 Difference]: Finished difference Result 38729 states and 60316 transitions. [2018-07-24 11:52:15,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:52:15,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2018-07-24 11:52:15,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:52:15,340 INFO L225 Difference]: With dead ends: 38729 [2018-07-24 11:52:15,340 INFO L226 Difference]: Without dead ends: 25958 [2018-07-24 11:52:15,383 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:52:15,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25958 states. [2018-07-24 11:52:15,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25958 to 25779. [2018-07-24 11:52:15,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25779 states. [2018-07-24 11:52:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25779 states to 25779 states and 37063 transitions. [2018-07-24 11:52:15,954 INFO L78 Accepts]: Start accepts. Automaton has 25779 states and 37063 transitions. Word has length 110 [2018-07-24 11:52:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:52:15,954 INFO L471 AbstractCegarLoop]: Abstraction has 25779 states and 37063 transitions. [2018-07-24 11:52:15,954 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:52:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand 25779 states and 37063 transitions. [2018-07-24 11:52:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-24 11:52:15,957 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:52:15,957 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:52:15,957 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 11:52:15,957 INFO L82 PathProgramCache]: Analyzing trace with hash 318665499, now seen corresponding path program 1 times [2018-07-24 11:52:15,958 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:52:15,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:15,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:52:15,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:15,959 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:52:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:52:16,213 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:52:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:52:16,576 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:52:16,576 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:52:16,577 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:52:16,578 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:52:16,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:52:16,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:52:16,578 INFO L87 Difference]: Start difference. First operand 25779 states and 37063 transitions. Second operand 6 states. [2018-07-24 11:52:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:52:30,567 INFO L93 Difference]: Finished difference Result 67158 states and 102761 transitions. [2018-07-24 11:52:30,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:52:30,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-07-24 11:52:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:52:30,764 INFO L225 Difference]: With dead ends: 67158 [2018-07-24 11:52:30,765 INFO L226 Difference]: Without dead ends: 41385 [2018-07-24 11:52:30,835 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:52:30,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41385 states. [2018-07-24 11:52:31,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41385 to 41087. [2018-07-24 11:52:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41087 states. [2018-07-24 11:52:31,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41087 states to 41087 states and 58947 transitions. [2018-07-24 11:52:31,694 INFO L78 Accepts]: Start accepts. Automaton has 41087 states and 58947 transitions. Word has length 115 [2018-07-24 11:52:31,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:52:31,695 INFO L471 AbstractCegarLoop]: Abstraction has 41087 states and 58947 transitions. [2018-07-24 11:52:31,695 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:52:31,695 INFO L276 IsEmpty]: Start isEmpty. Operand 41087 states and 58947 transitions. [2018-07-24 11:52:31,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-24 11:52:31,697 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:52:31,698 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:52:31,698 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 11:52:31,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1243956726, now seen corresponding path program 1 times [2018-07-24 11:52:31,698 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:52:31,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:31,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:52:31,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:31,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:52:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:52:32,008 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:52:32,009 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:52:32,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:52:32,009 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:52:32,010 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:52:32,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:52:32,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:52:32,017 INFO L87 Difference]: Start difference. First operand 41087 states and 58947 transitions. Second operand 5 states. [2018-07-24 11:52:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:52:58,091 INFO L93 Difference]: Finished difference Result 133271 states and 203273 transitions. [2018-07-24 11:52:58,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:52:58,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-07-24 11:52:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:52:58,373 INFO L225 Difference]: With dead ends: 133271 [2018-07-24 11:52:58,373 INFO L226 Difference]: Without dead ends: 92190 [2018-07-24 11:52:58,485 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 11:52:58,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92190 states. [2018-07-24 11:52:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92190 to 91489. [2018-07-24 11:52:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91489 states. [2018-07-24 11:53:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91489 states to 91489 states and 124722 transitions. [2018-07-24 11:53:00,109 INFO L78 Accepts]: Start accepts. Automaton has 91489 states and 124722 transitions. Word has length 128 [2018-07-24 11:53:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:53:00,109 INFO L471 AbstractCegarLoop]: Abstraction has 91489 states and 124722 transitions. [2018-07-24 11:53:00,109 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:53:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 91489 states and 124722 transitions. [2018-07-24 11:53:00,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-07-24 11:53:00,113 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:53:00,113 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:53:00,114 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 11:53:00,115 INFO L82 PathProgramCache]: Analyzing trace with hash -680747582, now seen corresponding path program 1 times [2018-07-24 11:53:00,115 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:53:00,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:00,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:00,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:00,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:53:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:00,398 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:53:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 11:53:00,652 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:53:00,652 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:53:00,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:00,670 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:53:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:00,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:53:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:00,955 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:53:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:01,324 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:53:01,324 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-07-24 11:53:01,324 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:53:01,324 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:53:01,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:53:01,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:53:01,325 INFO L87 Difference]: Start difference. First operand 91489 states and 124722 transitions. Second operand 3 states. [2018-07-24 11:53:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:53:10,641 INFO L93 Difference]: Finished difference Result 237352 states and 331478 transitions. [2018-07-24 11:53:10,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:53:10,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2018-07-24 11:53:10,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:53:11,322 INFO L225 Difference]: With dead ends: 237352 [2018-07-24 11:53:11,322 INFO L226 Difference]: Without dead ends: 145869 [2018-07-24 11:53:11,625 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 338 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:53:11,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145869 states. [2018-07-24 11:53:15,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145869 to 145782. [2018-07-24 11:53:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145782 states. [2018-07-24 11:53:16,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145782 states to 145782 states and 194701 transitions. [2018-07-24 11:53:16,385 INFO L78 Accepts]: Start accepts. Automaton has 145782 states and 194701 transitions. Word has length 170 [2018-07-24 11:53:16,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:53:16,385 INFO L471 AbstractCegarLoop]: Abstraction has 145782 states and 194701 transitions. [2018-07-24 11:53:16,385 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:53:16,386 INFO L276 IsEmpty]: Start isEmpty. Operand 145782 states and 194701 transitions. [2018-07-24 11:53:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-07-24 11:53:16,402 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:53:16,402 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:53:16,402 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 11:53:16,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1912665679, now seen corresponding path program 1 times [2018-07-24 11:53:16,403 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:53:16,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:16,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:16,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:16,404 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:53:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 130 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 11:53:16,815 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:53:16,815 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:53:16,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:16,824 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:53:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:16,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:53:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 11:53:17,060 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:53:17,253 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 130 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 11:53:17,275 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:53:17,275 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:53:17,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:17,293 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:53:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:17,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:53:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 11:53:17,619 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:53:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 130 proven. 85 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 11:53:18,041 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:53:18,042 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 11:53:18,042 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:53:18,042 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:53:18,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:53:18,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:53:18,043 INFO L87 Difference]: Start difference. First operand 145782 states and 194701 transitions. Second operand 9 states. [2018-07-24 11:53:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:53:37,462 INFO L93 Difference]: Finished difference Result 314643 states and 467361 transitions. [2018-07-24 11:53:37,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 11:53:37,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 289 [2018-07-24 11:53:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:53:38,032 INFO L225 Difference]: With dead ends: 314643 [2018-07-24 11:53:38,032 INFO L226 Difference]: Without dead ends: 148445 [2018-07-24 11:53:38,275 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1155 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:53:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148445 states. [2018-07-24 11:53:41,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148445 to 137955. [2018-07-24 11:53:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137955 states. [2018-07-24 11:53:42,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137955 states to 137955 states and 187437 transitions. [2018-07-24 11:53:42,335 INFO L78 Accepts]: Start accepts. Automaton has 137955 states and 187437 transitions. Word has length 289 [2018-07-24 11:53:42,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:53:42,335 INFO L471 AbstractCegarLoop]: Abstraction has 137955 states and 187437 transitions. [2018-07-24 11:53:42,335 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:53:42,335 INFO L276 IsEmpty]: Start isEmpty. Operand 137955 states and 187437 transitions. [2018-07-24 11:53:42,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-24 11:53:42,345 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:53:42,345 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:53:42,345 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 11:53:42,346 INFO L82 PathProgramCache]: Analyzing trace with hash -49778133, now seen corresponding path program 1 times [2018-07-24 11:53:42,346 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:53:42,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:42,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:42,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:42,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:53:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:43,163 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:53:43,163 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:53:43,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:43,175 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:53:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:43,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:53:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:43,716 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:53:43,909 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2018-07-24 11:53:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:45,841 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:53:45,842 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2018-07-24 11:53:45,842 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:53:45,842 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:53:45,842 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:53:45,843 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:53:45,843 INFO L87 Difference]: Start difference. First operand 137955 states and 187437 transitions. Second operand 5 states. [2018-07-24 11:53:57,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:53:57,853 INFO L93 Difference]: Finished difference Result 291287 states and 397799 transitions. [2018-07-24 11:53:57,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 11:53:57,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2018-07-24 11:53:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:53:58,346 INFO L225 Difference]: With dead ends: 291287 [2018-07-24 11:53:58,347 INFO L226 Difference]: Without dead ends: 153338 [2018-07-24 11:53:58,558 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 595 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-07-24 11:53:58,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153338 states. [2018-07-24 11:54:05,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153338 to 149911. [2018-07-24 11:54:05,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149911 states. [2018-07-24 11:54:05,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149911 states to 149911 states and 201014 transitions. [2018-07-24 11:54:05,939 INFO L78 Accepts]: Start accepts. Automaton has 149911 states and 201014 transitions. Word has length 299 [2018-07-24 11:54:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:54:05,940 INFO L471 AbstractCegarLoop]: Abstraction has 149911 states and 201014 transitions. [2018-07-24 11:54:05,940 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:54:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 149911 states and 201014 transitions. [2018-07-24 11:54:05,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-07-24 11:54:05,979 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:54:05,980 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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 11:54:05,980 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:54:05,981 INFO L82 PathProgramCache]: Analyzing trace with hash 288780960, now seen corresponding path program 1 times [2018-07-24 11:54:05,981 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:54:05,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:05,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:05,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:05,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:54:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 244 proven. 240 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 11:54:07,396 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:54:07,396 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 11:54:07,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:07,403 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:54:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:07,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:54:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 460 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 11:54:07,710 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:54:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 237 proven. 78 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-07-24 11:54:08,110 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:54:08,110 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 11:54:08,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:08,127 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:54:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:08,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:54:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 460 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 11:54:08,849 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:54:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 237 proven. 78 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-07-24 11:54:10,057 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:54:10,058 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 19 [2018-07-24 11:54:10,058 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:54:10,059 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 11:54:10,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 11:54:10,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-07-24 11:54:10,060 INFO L87 Difference]: Start difference. First operand 149911 states and 201014 transitions. Second operand 16 states. [2018-07-24 11:54:16,566 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 Received shutdown request... [2018-07-24 11:54:49,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-24 11:54:49,972 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:54:49,977 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:54:49,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:54:49 BoogieIcfgContainer [2018-07-24 11:54:49,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:54:49,979 INFO L168 Benchmark]: Toolchain (without parser) took 226651.81 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-07-24 11:54:49,980 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 11:54:49,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2375.43 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:54:49,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 285.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:54:49,982 INFO L168 Benchmark]: Boogie Preprocessor took 970.59 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 909.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-07-24 11:54:49,983 INFO L168 Benchmark]: RCFGBuilder took 9055.40 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 179.8 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -178.5 MB). Peak memory consumption was 749.2 MB. Max. memory is 7.1 GB. [2018-07-24 11:54:49,984 INFO L168 Benchmark]: TraceAbstraction took 213959.25 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.1 GB). Free memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: -218.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-24 11:54:49,990 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2375.43 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 285.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 970.59 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 909.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9055.40 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 179.8 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -178.5 MB). Peak memory consumption was 749.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213959.25 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.1 GB). Free memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: -218.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 63). Cancelled while BasicCegarLoop was constructing difference of abstraction (149911states) and interpolant automaton (currently 41 states, 16 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 54 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 213.8s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 180.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1831 SDtfs, 43353 SDslu, 2354 SDs, 0 SdLazy, 82860 SolverSat, 17588 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 143.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3988 GetRequests, 3847 SyntacticMatches, 16 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149911occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 20.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 15369 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 3783 NumberOfCodeBlocks, 3783 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 5667 ConstructedInterpolants, 0 QuantifiedInterpolants, 8120659 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3344 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 23 InterpolantComputations, 11 PerfectInterpolantSequences, 3804/4489 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/Problem12_label25_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-54-50-005.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label25_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-54-50-005.csv Completed graceful shutdown