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/Problem18_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:57:02,097 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:57:02,099 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:57:02,112 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:57:02,112 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:57:02,113 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:57:02,114 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:57:02,116 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:57:02,118 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:57:02,119 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:57:02,120 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:57:02,120 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:57:02,121 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:57:02,122 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:57:02,123 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:57:02,124 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:57:02,125 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:57:02,127 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:57:02,128 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:57:02,130 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:57:02,131 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:57:02,132 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:57:02,135 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:57:02,135 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:57:02,135 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:57:02,136 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:57:02,137 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:57:02,138 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:57:02,139 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:57:02,140 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:57:02,140 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:57:02,141 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:57:02,141 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:57:02,141 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:57:02,142 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:57:02,143 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:57:02,143 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:57:02,169 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:57:02,170 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:57:02,171 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:57:02,172 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:57:02,172 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:57:02,172 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:57:02,172 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:57:02,172 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:57:02,173 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:57:02,173 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:57:02,173 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:57:02,174 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:57:02,174 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:57:02,174 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:57:02,175 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:57:02,176 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:57:02,176 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:57:02,176 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:57:02,176 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:57:02,176 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:57:02,177 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:57:02,177 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:57:02,177 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:57:02,178 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:57:02,179 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:57:02,179 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:57:02,179 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:57:02,179 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:57:02,179 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:57:02,180 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:57:02,180 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:57:02,180 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:57:02,180 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:57:02,245 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:57:02,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:57:02,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:57:02,266 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:57:02,266 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:57:02,267 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label04_true-unreach-call.c [2018-07-24 14:57:02,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d922da6/dca15b2665814fcc8da4a11adbd4a362/FLAGd6deb94a5 [2018-07-24 14:57:03,031 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:57:03,031 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label04_true-unreach-call.c [2018-07-24 14:57:03,057 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d922da6/dca15b2665814fcc8da4a11adbd4a362/FLAGd6deb94a5 [2018-07-24 14:57:03,074 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d922da6/dca15b2665814fcc8da4a11adbd4a362 [2018-07-24 14:57:03,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:57:03,087 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:57:03,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:57:03,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:57:03,095 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:57:03,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:57:03" (1/1) ... [2018-07-24 14:57:03,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a59828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03, skipping insertion in model container [2018-07-24 14:57:03,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:57:03" (1/1) ... [2018-07-24 14:57:03,437 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:57:04,205 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:57:04,224 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:57:05,031 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:57:05,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:05 WrapperNode [2018-07-24 14:57:05,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:57:05,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:57:05,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:57:05,189 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:57:05,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:05" (1/1) ... [2018-07-24 14:57:05,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:05" (1/1) ... [2018-07-24 14:57:05,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:57:05,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:57:05,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:57:05,346 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:57:05,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:05" (1/1) ... [2018-07-24 14:57:05,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:05" (1/1) ... [2018-07-24 14:57:05,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:05" (1/1) ... [2018-07-24 14:57:05,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:05" (1/1) ... [2018-07-24 14:57:05,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:05" (1/1) ... [2018-07-24 14:57:06,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:05" (1/1) ... [2018-07-24 14:57:06,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:05" (1/1) ... [2018-07-24 14:57:06,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:57:06,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:57:06,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:57:06,118 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:57:06,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:05" (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 14:57:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:57:06,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:57:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:57:06,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:57:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:57:06,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:57:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:57:06,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:57:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:57:06,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:57:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:57:06,190 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:57:14,485 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:57:14,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:57:14 BoogieIcfgContainer [2018-07-24 14:57:14,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:57:14,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:57:14,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:57:14,492 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:57:14,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:57:03" (1/3) ... [2018-07-24 14:57:14,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e4bd76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:57:14, skipping insertion in model container [2018-07-24 14:57:14,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:05" (2/3) ... [2018-07-24 14:57:14,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e4bd76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:57:14, skipping insertion in model container [2018-07-24 14:57:14,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:57:14" (3/3) ... [2018-07-24 14:57:14,496 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label04_true-unreach-call.c [2018-07-24 14:57:14,506 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:57:14,516 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:57:14,576 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:57:14,576 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:57:14,576 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:57:14,577 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:57:14,577 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:57:14,577 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:57:14,577 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:57:14,577 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:57:14,577 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:57:14,614 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 14:57:14,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-07-24 14:57:14,624 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:57:14,626 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:57:14,626 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:57:14,632 INFO L82 PathProgramCache]: Analyzing trace with hash -268137023, now seen corresponding path program 1 times [2018-07-24 14:57:14,635 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:57:14,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:14,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:14,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:14,691 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:57:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:15,104 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:57:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:57:15,235 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:57:15,236 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:57:15,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:57:15,244 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:57:15,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:57:15,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:57:15,265 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-24 14:57:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:57:21,831 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-24 14:57:21,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:57:21,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-07-24 14:57:21,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:57:21,868 INFO L225 Difference]: With dead ends: 2251 [2018-07-24 14:57:21,868 INFO L226 Difference]: Without dead ends: 1474 [2018-07-24 14:57:21,882 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:57:21,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-24 14:57:22,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-24 14:57:22,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-24 14:57:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-07-24 14:57:22,041 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 59 [2018-07-24 14:57:22,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:57:22,042 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-07-24 14:57:22,042 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:57:22,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-07-24 14:57:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-24 14:57:22,053 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:57:22,054 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:57:22,054 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:57:22,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1237897426, now seen corresponding path program 1 times [2018-07-24 14:57:22,055 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:57:22,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:22,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:22,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:22,058 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:57:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:57:22,302 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:57:22,302 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:57:22,302 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:57:22,304 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:57:22,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:57:22,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:57:22,305 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-07-24 14:57:30,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:57:30,622 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-07-24 14:57:30,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:57:30,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-07-24 14:57:30,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:57:30,643 INFO L225 Difference]: With dead ends: 4419 [2018-07-24 14:57:30,644 INFO L226 Difference]: Without dead ends: 2951 [2018-07-24 14:57:30,649 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:57:30,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-07-24 14:57:30,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-07-24 14:57:30,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-07-24 14:57:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-07-24 14:57:30,765 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 129 [2018-07-24 14:57:30,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:57:30,765 INFO L471 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-07-24 14:57:30,766 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:57:30,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-07-24 14:57:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-07-24 14:57:30,779 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:57:30,779 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:57:30,779 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:57:30,780 INFO L82 PathProgramCache]: Analyzing trace with hash 776493837, now seen corresponding path program 1 times [2018-07-24 14:57:30,780 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:57:30,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:30,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:30,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:30,782 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:57:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:57:31,045 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:57:31,045 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:57:31,045 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:57:31,046 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:57:31,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:57:31,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:57:31,046 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 6 states. [2018-07-24 14:57:32,659 WARN L169 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-07-24 14:57:44,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:57:44,073 INFO L93 Difference]: Finished difference Result 11941 states and 22535 transitions. [2018-07-24 14:57:44,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:57:44,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-07-24 14:57:44,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:57:44,138 INFO L225 Difference]: With dead ends: 11941 [2018-07-24 14:57:44,138 INFO L226 Difference]: Without dead ends: 9022 [2018-07-24 14:57:44,171 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:57:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9022 states. [2018-07-24 14:57:44,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9022 to 8934. [2018-07-24 14:57:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8934 states. [2018-07-24 14:57:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8934 states to 8934 states and 13433 transitions. [2018-07-24 14:57:44,469 INFO L78 Accepts]: Start accepts. Automaton has 8934 states and 13433 transitions. Word has length 130 [2018-07-24 14:57:44,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:57:44,469 INFO L471 AbstractCegarLoop]: Abstraction has 8934 states and 13433 transitions. [2018-07-24 14:57:44,469 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:57:44,470 INFO L276 IsEmpty]: Start isEmpty. Operand 8934 states and 13433 transitions. [2018-07-24 14:57:44,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-24 14:57:44,477 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:57:44,477 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:57:44,477 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:57:44,478 INFO L82 PathProgramCache]: Analyzing trace with hash -449360870, now seen corresponding path program 1 times [2018-07-24 14:57:44,478 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:57:44,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:44,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:44,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:44,479 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:57:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:57:45,486 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:57:45,486 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-07-24 14:57:45,486 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:57:45,487 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:57:45,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:57:45,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:57:45,490 INFO L87 Difference]: Start difference. First operand 8934 states and 13433 transitions. Second operand 9 states. [2018-07-24 14:57:47,461 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-07-24 14:57:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:57:55,423 INFO L93 Difference]: Finished difference Result 22512 states and 35380 transitions. [2018-07-24 14:57:55,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 14:57:55,425 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 197 [2018-07-24 14:57:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:57:55,516 INFO L225 Difference]: With dead ends: 22512 [2018-07-24 14:57:55,517 INFO L226 Difference]: Without dead ends: 13584 [2018-07-24 14:57:55,559 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:57:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13584 states. [2018-07-24 14:57:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13584 to 13425. [2018-07-24 14:57:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13425 states. [2018-07-24 14:57:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13425 states to 13425 states and 19272 transitions. [2018-07-24 14:57:56,119 INFO L78 Accepts]: Start accepts. Automaton has 13425 states and 19272 transitions. Word has length 197 [2018-07-24 14:57:56,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:57:56,120 INFO L471 AbstractCegarLoop]: Abstraction has 13425 states and 19272 transitions. [2018-07-24 14:57:56,120 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:57:56,120 INFO L276 IsEmpty]: Start isEmpty. Operand 13425 states and 19272 transitions. [2018-07-24 14:57:56,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-07-24 14:57:56,131 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:57:56,132 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:57:56,132 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:57:56,132 INFO L82 PathProgramCache]: Analyzing trace with hash -212759026, now seen corresponding path program 1 times [2018-07-24 14:57:56,132 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:57:56,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:56,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:56,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:57:56,134 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:57:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:56,502 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:57:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 99 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:57:56,728 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:57:56,729 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:57:56,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:57:56,738 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:57:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:57:56,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:57:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 14:57:57,214 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:57:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 14:57:57,729 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:57:57,729 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-07-24 14:57:57,730 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:57:57,731 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:57:57,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:57:57,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:57:57,732 INFO L87 Difference]: Start difference. First operand 13425 states and 19272 transitions. Second operand 3 states. [2018-07-24 14:58:03,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:58:03,597 INFO L93 Difference]: Finished difference Result 26844 states and 38592 transitions. [2018-07-24 14:58:03,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:58:03,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2018-07-24 14:58:03,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:58:03,660 INFO L225 Difference]: With dead ends: 26844 [2018-07-24 14:58:03,661 INFO L226 Difference]: Without dead ends: 13425 [2018-07-24 14:58:03,713 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 641 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:58:03,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13425 states. [2018-07-24 14:58:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13425 to 12710. [2018-07-24 14:58:03,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12710 states. [2018-07-24 14:58:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12710 states to 12710 states and 16332 transitions. [2018-07-24 14:58:04,012 INFO L78 Accepts]: Start accepts. Automaton has 12710 states and 16332 transitions. Word has length 320 [2018-07-24 14:58:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:58:04,013 INFO L471 AbstractCegarLoop]: Abstraction has 12710 states and 16332 transitions. [2018-07-24 14:58:04,013 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:58:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand 12710 states and 16332 transitions. [2018-07-24 14:58:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-07-24 14:58:04,023 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:58:04,023 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:58:04,024 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:58:04,024 INFO L82 PathProgramCache]: Analyzing trace with hash -664547617, now seen corresponding path program 1 times [2018-07-24 14:58:04,024 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:58:04,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:04,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:04,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:04,026 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:58:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 233 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 14:58:04,586 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:58:04,586 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) [2018-07-24 14:58:04,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:04,602 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:58:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:04,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:58:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-07-24 14:58:05,136 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:58:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 233 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 14:58:06,156 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:58:06,156 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 14:58:06,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:06,194 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:58:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:06,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:58:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-07-24 14:58:06,721 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:58:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 233 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-07-24 14:58:07,169 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:58:07,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:58:07,170 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:58:07,173 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:58:07,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:58:07,173 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:58:07,173 INFO L87 Difference]: Start difference. First operand 12710 states and 16332 transitions. Second operand 9 states. [2018-07-24 14:58:21,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:58:21,205 INFO L93 Difference]: Finished difference Result 47872 states and 69854 transitions. [2018-07-24 14:58:21,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 14:58:21,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 326 [2018-07-24 14:58:21,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:58:21,371 INFO L225 Difference]: With dead ends: 47872 [2018-07-24 14:58:21,372 INFO L226 Difference]: Without dead ends: 31967 [2018-07-24 14:58:21,467 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1326 GetRequests, 1303 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:58:21,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31967 states. [2018-07-24 14:58:22,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31967 to 30932. [2018-07-24 14:58:22,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30932 states. [2018-07-24 14:58:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30932 states to 30932 states and 37982 transitions. [2018-07-24 14:58:22,295 INFO L78 Accepts]: Start accepts. Automaton has 30932 states and 37982 transitions. Word has length 326 [2018-07-24 14:58:22,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:58:22,296 INFO L471 AbstractCegarLoop]: Abstraction has 30932 states and 37982 transitions. [2018-07-24 14:58:22,296 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:58:22,296 INFO L276 IsEmpty]: Start isEmpty. Operand 30932 states and 37982 transitions. [2018-07-24 14:58:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-07-24 14:58:22,307 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:58:22,307 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:58:22,307 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:58:22,308 INFO L82 PathProgramCache]: Analyzing trace with hash -851857614, now seen corresponding path program 1 times [2018-07-24 14:58:22,308 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:58:22,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:22,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:22,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:22,309 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:58:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-07-24 14:58:22,635 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:58:22,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:58:22,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:58:22,636 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:58:22,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:58:22,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:58:22,637 INFO L87 Difference]: Start difference. First operand 30932 states and 37982 transitions. Second operand 4 states. [2018-07-24 14:58:30,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:58:30,232 INFO L93 Difference]: Finished difference Result 72525 states and 92799 transitions. [2018-07-24 14:58:30,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:58:30,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 359 [2018-07-24 14:58:30,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:58:30,391 INFO L225 Difference]: With dead ends: 72525 [2018-07-24 14:58:30,391 INFO L226 Difference]: Without dead ends: 41604 [2018-07-24 14:58:30,513 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:58:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41604 states. [2018-07-24 14:58:31,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41604 to 41595. [2018-07-24 14:58:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41595 states. [2018-07-24 14:58:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41595 states to 41595 states and 49159 transitions. [2018-07-24 14:58:31,307 INFO L78 Accepts]: Start accepts. Automaton has 41595 states and 49159 transitions. Word has length 359 [2018-07-24 14:58:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:58:31,307 INFO L471 AbstractCegarLoop]: Abstraction has 41595 states and 49159 transitions. [2018-07-24 14:58:31,308 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:58:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 41595 states and 49159 transitions. [2018-07-24 14:58:31,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-07-24 14:58:31,315 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:58:31,315 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:58:31,316 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:58:31,316 INFO L82 PathProgramCache]: Analyzing trace with hash 528317878, now seen corresponding path program 1 times [2018-07-24 14:58:31,316 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:58:31,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:31,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:31,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:31,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:58:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 333 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-07-24 14:58:31,757 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:58:31,758 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 14:58:31,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:31,774 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:58:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:31,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:58:32,492 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 14:58:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2018-07-24 14:58:32,658 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:58:32,977 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2018-07-24 14:58:33,360 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-07-24 14:58:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 156 proven. 185 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-07-24 14:58:33,688 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:58:33,689 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 14:58:33,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:58:33,689 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:58:33,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:58:33,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:58:33,690 INFO L87 Difference]: Start difference. First operand 41595 states and 49159 transitions. Second operand 5 states. [2018-07-24 14:58:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:58:39,751 INFO L93 Difference]: Finished difference Result 91122 states and 107378 transitions. [2018-07-24 14:58:39,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:58:39,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 377 [2018-07-24 14:58:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:58:39,960 INFO L225 Difference]: With dead ends: 91122 [2018-07-24 14:58:39,961 INFO L226 Difference]: Without dead ends: 50933 [2018-07-24 14:58:40,073 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 749 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:58:40,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50933 states. [2018-07-24 14:58:40,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50933 to 47994. [2018-07-24 14:58:40,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47994 states. [2018-07-24 14:58:40,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47994 states to 47994 states and 56042 transitions. [2018-07-24 14:58:40,918 INFO L78 Accepts]: Start accepts. Automaton has 47994 states and 56042 transitions. Word has length 377 [2018-07-24 14:58:40,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:58:40,918 INFO L471 AbstractCegarLoop]: Abstraction has 47994 states and 56042 transitions. [2018-07-24 14:58:40,918 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:58:40,918 INFO L276 IsEmpty]: Start isEmpty. Operand 47994 states and 56042 transitions. [2018-07-24 14:58:40,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2018-07-24 14:58:40,929 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:58:40,930 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:58:40,930 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:58:40,930 INFO L82 PathProgramCache]: Analyzing trace with hash 763929097, now seen corresponding path program 1 times [2018-07-24 14:58:40,930 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:58:40,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:40,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:40,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:40,932 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:58:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:41,622 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-24 14:58:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 95 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:58:42,526 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:58:42,526 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:58:42,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:42,534 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:58:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:42,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:58:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-07-24 14:58:43,637 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:58:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 104 proven. 93 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:58:44,180 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:58:44,180 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 6] total 17 [2018-07-24 14:58:44,180 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:58:44,181 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:58:44,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:58:44,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-07-24 14:58:44,181 INFO L87 Difference]: Start difference. First operand 47994 states and 56042 transitions. Second operand 5 states. [2018-07-24 14:58:52,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:58:52,038 INFO L93 Difference]: Finished difference Result 115682 states and 138579 transitions. [2018-07-24 14:58:52,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:58:52,038 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2018-07-24 14:58:52,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:58:52,288 INFO L225 Difference]: With dead ends: 115682 [2018-07-24 14:58:52,288 INFO L226 Difference]: Without dead ends: 68394 [2018-07-24 14:58:52,439 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 951 GetRequests, 924 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:58:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68394 states. [2018-07-24 14:58:53,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68394 to 67640. [2018-07-24 14:58:53,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67640 states. [2018-07-24 14:58:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67640 states to 67640 states and 78137 transitions. [2018-07-24 14:58:53,632 INFO L78 Accepts]: Start accepts. Automaton has 67640 states and 78137 transitions. Word has length 465 [2018-07-24 14:58:53,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:58:53,633 INFO L471 AbstractCegarLoop]: Abstraction has 67640 states and 78137 transitions. [2018-07-24 14:58:53,633 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:58:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 67640 states and 78137 transitions. [2018-07-24 14:58:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2018-07-24 14:58:53,645 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:58:53,646 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:58:53,647 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:58:53,647 INFO L82 PathProgramCache]: Analyzing trace with hash -97822178, now seen corresponding path program 1 times [2018-07-24 14:58:53,647 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:58:53,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:53,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:53,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:58:53,648 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:58:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:54,549 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 14:58:54,761 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 14:58:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 60 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:58:58,940 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:58:58,941 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:58:58,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:58:58,949 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:58:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:58:59,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:58:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-07-24 14:58:59,901 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:59:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-07-24 14:59:01,738 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:59:01,738 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:59:01,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:59:01,756 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:59:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:59:02,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:59:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-07-24 14:59:02,941 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:59:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-07-24 14:59:04,159 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:59:04,160 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 5, 5, 5, 5] total 36 [2018-07-24 14:59:04,160 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:59:04,162 INFO L450 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-07-24 14:59:04,162 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-07-24 14:59:04,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2018-07-24 14:59:04,163 INFO L87 Difference]: Start difference. First operand 67640 states and 78137 transitions. Second operand 29 states. [2018-07-24 14:59:14,791 WARN L169 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2018-07-24 14:59:16,531 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2018-07-24 14:59:17,905 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-07-24 14:59:19,108 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2018-07-24 14:59:19,444 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2018-07-24 14:59:20,134 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2018-07-24 14:59:20,413 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2018-07-24 14:59:22,876 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-07-24 14:59:24,337 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2018-07-24 14:59:24,905 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-07-24 14:59:26,792 WARN L169 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2018-07-24 14:59:28,553 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-07-24 14:59:28,773 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2018-07-24 14:59:30,731 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-07-24 14:59:31,167 WARN L169 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-07-24 14:59:31,356 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-07-24 14:59:32,686 WARN L169 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2018-07-24 14:59:32,916 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2018-07-24 14:59:33,378 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-07-24 14:59:34,138 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-07-24 14:59:34,298 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-07-24 14:59:36,060 WARN L169 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2018-07-24 14:59:36,494 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-07-24 14:59:37,141 WARN L169 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-07-24 14:59:39,510 WARN L169 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 33 [2018-07-24 14:59:41,550 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-07-24 14:59:41,902 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2018-07-24 14:59:43,173 WARN L169 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-07-24 14:59:43,681 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-07-24 14:59:44,136 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2018-07-24 14:59:45,051 WARN L169 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-07-24 14:59:45,946 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-07-24 14:59:51,503 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-07-24 14:59:52,194 WARN L169 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-07-24 14:59:52,557 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-07-24 14:59:58,027 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-07-24 14:59:58,961 WARN L169 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-07-24 14:59:59,224 WARN L169 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2018-07-24 14:59:59,498 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-07-24 14:59:59,705 WARN L169 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-07-24 15:00:01,400 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2018-07-24 15:00:02,010 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2018-07-24 15:00:03,627 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2018-07-24 15:00:05,138 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-07-24 15:00:06,183 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-07-24 15:00:07,730 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-07-24 15:00:17,163 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2018-07-24 15:00:19,973 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2018-07-24 15:00:23,889 WARN L169 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2018-07-24 15:00:25,523 WARN L169 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-07-24 15:00:28,398 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-07-24 15:00:31,395 WARN L169 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-07-24 15:00:36,015 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-07-24 15:00:38,786 WARN L169 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-07-24 15:00:42,253 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-07-24 15:00:52,642 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-07-24 15:00:53,504 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 Received shutdown request... [2018-07-24 15:00:54,481 WARN L177 SmtUtils]: Removed 6 from assertion stack [2018-07-24 15:00:54,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 312 states. [2018-07-24 15:00:54,481 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 15:00:54,485 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 15:00:54,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:00:54 BoogieIcfgContainer [2018-07-24 15:00:54,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 15:00:54,486 INFO L168 Benchmark]: Toolchain (without parser) took 231400.32 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-07-24 15:00:54,487 INFO L168 Benchmark]: CDTParser took 0.22 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 15:00:54,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2100.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-07-24 15:00:54,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 156.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 15:00:54,489 INFO L168 Benchmark]: Boogie Preprocessor took 771.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 851.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 91.6 MB. Max. memory is 7.1 GB. [2018-07-24 15:00:54,490 INFO L168 Benchmark]: RCFGBuilder took 8369.43 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 549.2 MB). Peak memory consumption was 549.2 MB. Max. memory is 7.1 GB. [2018-07-24 15:00:54,490 INFO L168 Benchmark]: TraceAbstraction took 219997.31 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 15:00:54,495 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2100.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 156.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 771.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 851.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 91.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8369.43 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 549.2 MB). Peak memory consumption was 549.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219997.31 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 165]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 165). Cancelled while BasicCegarLoop was constructing difference of abstraction (67640states) and interpolant automaton (currently 312 states, 29 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 20. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 219.9s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 191.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2658 SDtfs, 59249 SDslu, 4754 SDs, 0 SdLazy, 112299 SolverSat, 17370 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 129.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8213 GetRequests, 7761 SyntacticMatches, 26 SemanticMatches, 425 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50120 ImplicationChecksByTransitivity, 37.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67640occurred 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: 5.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 5725 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 7155 NumberOfCodeBlocks, 7155 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 10931 ConstructedInterpolants, 0 QuantifiedInterpolants, 32610835 SizeOfPredicates, 10 NumberOfNonLiveVariables, 5431 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 6979/8313 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-00-54-510.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_15-00-54-510.csv Completed graceful shutdown