java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:12:03,101 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:12:03,103 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:12:03,115 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:12:03,116 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:12:03,117 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:12:03,118 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:12:03,120 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:12:03,122 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:12:03,122 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:12:03,123 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:12:03,124 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:12:03,125 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:12:03,126 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:12:03,127 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:12:03,128 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:12:03,129 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:12:03,131 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:12:03,133 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:12:03,134 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:12:03,136 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:12:03,137 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:12:03,140 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:12:03,140 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:12:03,140 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:12:03,141 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:12:03,142 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:12:03,143 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:12:03,144 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:12:03,145 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:12:03,145 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:12:03,146 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:12:03,147 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:12:03,147 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:12:03,148 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:12:03,149 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:12:03,149 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 14:12:03,169 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:12:03,170 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:12:03,172 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:12:03,173 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:12:03,173 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:12:03,173 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:12:03,173 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:12:03,173 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:12:03,174 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:12:03,174 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:12:03,174 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:12:03,175 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:12:03,176 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:12:03,176 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:12:03,176 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:12:03,178 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:12:03,178 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:12:03,178 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:12:03,178 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:12:03,179 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:12:03,179 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:12:03,179 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:12:03,180 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:12:03,180 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:12:03,180 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:12:03,180 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:12:03,180 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:12:03,181 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:12:03,181 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:12:03,181 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:12:03,181 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:12:03,181 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:12:03,182 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:12:03,250 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:12:03,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:12:03,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:12:03,276 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:12:03,276 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:12:03,277 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45_true-unreach-call.c [2018-07-24 14:12:03,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a478b0fc6/22bb1be155784fe39af22eab843194b2/FLAG368e72786 [2018-07-24 14:12:04,084 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:12:04,085 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label45_true-unreach-call.c [2018-07-24 14:12:04,122 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a478b0fc6/22bb1be155784fe39af22eab843194b2/FLAG368e72786 [2018-07-24 14:12:04,143 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a478b0fc6/22bb1be155784fe39af22eab843194b2 [2018-07-24 14:12:04,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:12:04,158 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:12:04,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:12:04,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:12:04,167 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:12:04,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:12:04" (1/1) ... [2018-07-24 14:12:04,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73387c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:04, skipping insertion in model container [2018-07-24 14:12:04,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:12:04" (1/1) ... [2018-07-24 14:12:04,522 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:12:05,594 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:12:05,616 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:12:06,581 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:12:06,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:06 WrapperNode [2018-07-24 14:12:06,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:12:06,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:12:06,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:12:06,811 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:12:06,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:06" (1/1) ... [2018-07-24 14:12:06,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:06" (1/1) ... [2018-07-24 14:12:07,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:12:07,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:12:07,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:12:07,054 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:12:07,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:06" (1/1) ... [2018-07-24 14:12:07,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:06" (1/1) ... [2018-07-24 14:12:07,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:06" (1/1) ... [2018-07-24 14:12:07,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:06" (1/1) ... [2018-07-24 14:12:07,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:06" (1/1) ... [2018-07-24 14:12:07,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:06" (1/1) ... [2018-07-24 14:12:07,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:06" (1/1) ... [2018-07-24 14:12:07,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:12:07,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:12:07,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:12:07,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:12:07,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:06" (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 14:12:07,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:12:07,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:12:07,960 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 14:12:07,961 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 14:12:07,961 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 14:12:07,961 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 14:12:07,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:12:07,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:12:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:12:07,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:12:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:12:07,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:12:07,963 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 14:12:07,965 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 14:12:20,008 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:12:20,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:12:20 BoogieIcfgContainer [2018-07-24 14:12:20,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:12:20,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:12:20,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:12:20,013 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:12:20,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:12:04" (1/3) ... [2018-07-24 14:12:20,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a97f124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:12:20, skipping insertion in model container [2018-07-24 14:12:20,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:12:06" (2/3) ... [2018-07-24 14:12:20,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a97f124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:12:20, skipping insertion in model container [2018-07-24 14:12:20,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:12:20" (3/3) ... [2018-07-24 14:12:20,017 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label45_true-unreach-call.c [2018-07-24 14:12:20,027 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:12:20,037 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:12:20,112 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:12:20,113 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:12:20,113 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:12:20,113 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:12:20,113 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:12:20,113 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:12:20,113 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:12:20,113 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:12:20,114 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:12:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:12:20,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-07-24 14:12:20,172 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:20,173 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] [2018-07-24 14:12:20,174 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 14:12:20,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1431923980, now seen corresponding path program 1 times [2018-07-24 14:12:20,182 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:20,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:20,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:20,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:20,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:20,689 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 14:12:20,692 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:12:20,693 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:12:20,693 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:20,700 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:12:20,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:12:20,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:12:20,720 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-07-24 14:12:35,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:35,422 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-07-24 14:12:35,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:12:35,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-07-24 14:12:35,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:35,466 INFO L225 Difference]: With dead ends: 3234 [2018-07-24 14:12:35,466 INFO L226 Difference]: Without dead ends: 2388 [2018-07-24 14:12:35,479 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:12:35,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-07-24 14:12:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-07-24 14:12:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-07-24 14:12:35,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4022 transitions. [2018-07-24 14:12:35,650 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4022 transitions. Word has length 58 [2018-07-24 14:12:35,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:35,651 INFO L471 AbstractCegarLoop]: Abstraction has 2388 states and 4022 transitions. [2018-07-24 14:12:35,651 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:12:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4022 transitions. [2018-07-24 14:12:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-24 14:12:35,671 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:35,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:35,673 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 14:12:35,673 INFO L82 PathProgramCache]: Analyzing trace with hash -158864186, now seen corresponding path program 1 times [2018-07-24 14:12:35,674 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:35,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:35,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:35,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:35,676 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:36,065 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:12:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:36,285 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:12:36,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:12:36,285 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:36,287 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:12:36,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:12:36,288 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:12:36,288 INFO L87 Difference]: Start difference. First operand 2388 states and 4022 transitions. Second operand 6 states. [2018-07-24 14:12:56,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:56,719 INFO L93 Difference]: Finished difference Result 9456 states and 16269 transitions. [2018-07-24 14:12:56,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:12:56,722 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-07-24 14:12:56,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:56,774 INFO L225 Difference]: With dead ends: 9456 [2018-07-24 14:12:56,775 INFO L226 Difference]: Without dead ends: 7074 [2018-07-24 14:12:56,790 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:12:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7074 states. [2018-07-24 14:12:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7074 to 7023. [2018-07-24 14:12:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2018-07-24 14:12:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 10545 transitions. [2018-07-24 14:12:57,033 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 10545 transitions. Word has length 158 [2018-07-24 14:12:57,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:57,034 INFO L471 AbstractCegarLoop]: Abstraction has 7023 states and 10545 transitions. [2018-07-24 14:12:57,034 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:12:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 10545 transitions. [2018-07-24 14:12:57,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-24 14:12:57,049 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:57,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:57,054 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 14:12:57,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1785538110, now seen corresponding path program 1 times [2018-07-24 14:12:57,054 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:57,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:57,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:57,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:57,056 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:12:57,480 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:57,480 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 14:12:57,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:57,492 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:57,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:57,922 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:58,251 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:58,285 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:12:58,286 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-07-24 14:12:58,286 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:58,287 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:12:58,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:12:58,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:12:58,291 INFO L87 Difference]: Start difference. First operand 7023 states and 10545 transitions. Second operand 3 states. [2018-07-24 14:13:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:06,898 INFO L93 Difference]: Finished difference Result 20925 states and 32111 transitions. [2018-07-24 14:13:06,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:13:06,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2018-07-24 14:13:06,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:06,977 INFO L225 Difference]: With dead ends: 20925 [2018-07-24 14:13:06,977 INFO L226 Difference]: Without dead ends: 13908 [2018-07-24 14:13:07,009 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 414 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:13:07,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13908 states. [2018-07-24 14:13:07,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13908 to 13908. [2018-07-24 14:13:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13908 states. [2018-07-24 14:13:07,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13908 states to 13908 states and 20340 transitions. [2018-07-24 14:13:07,414 INFO L78 Accepts]: Start accepts. Automaton has 13908 states and 20340 transitions. Word has length 208 [2018-07-24 14:13:07,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:07,414 INFO L471 AbstractCegarLoop]: Abstraction has 13908 states and 20340 transitions. [2018-07-24 14:13:07,415 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:13:07,415 INFO L276 IsEmpty]: Start isEmpty. Operand 13908 states and 20340 transitions. [2018-07-24 14:13:07,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-24 14:13:07,428 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:07,429 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:13:07,429 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 14:13:07,429 INFO L82 PathProgramCache]: Analyzing trace with hash 548790740, now seen corresponding path program 1 times [2018-07-24 14:13:07,429 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:07,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:07,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:07,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:07,431 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 102 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:13:07,873 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:07,873 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:13:07,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:07,893 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:08,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-07-24 14:13:08,518 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:08,813 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:13:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 102 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:13:09,494 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:13:09,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 14:13:09,495 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:09,496 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:13:09,496 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:13:09,497 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:13:09,497 INFO L87 Difference]: Start difference. First operand 13908 states and 20340 transitions. Second operand 5 states. [2018-07-24 14:13:18,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:18,275 INFO L93 Difference]: Finished difference Result 37453 states and 58520 transitions. [2018-07-24 14:13:18,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:13:18,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2018-07-24 14:13:18,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:18,372 INFO L225 Difference]: With dead ends: 37453 [2018-07-24 14:13:18,372 INFO L226 Difference]: Without dead ends: 23551 [2018-07-24 14:13:18,429 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 419 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:13:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23551 states. [2018-07-24 14:13:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23551 to 23466. [2018-07-24 14:13:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23466 states. [2018-07-24 14:13:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23466 states to 23466 states and 33014 transitions. [2018-07-24 14:13:19,262 INFO L78 Accepts]: Start accepts. Automaton has 23466 states and 33014 transitions. Word has length 212 [2018-07-24 14:13:19,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:19,263 INFO L471 AbstractCegarLoop]: Abstraction has 23466 states and 33014 transitions. [2018-07-24 14:13:19,263 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:13:19,263 INFO L276 IsEmpty]: Start isEmpty. Operand 23466 states and 33014 transitions. [2018-07-24 14:13:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-07-24 14:13:19,284 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:19,285 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, 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] [2018-07-24 14:13:19,285 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 14:13:19,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1937243629, now seen corresponding path program 1 times [2018-07-24 14:13:19,286 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:19,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:19,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:19,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:19,287 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:13:19,623 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:13:19,623 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:13:19,623 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:19,624 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:13:19,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:13:19,624 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:13:19,624 INFO L87 Difference]: Start difference. First operand 23466 states and 33014 transitions. Second operand 4 states. [2018-07-24 14:13:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:28,464 INFO L93 Difference]: Finished difference Result 60605 states and 85114 transitions. [2018-07-24 14:13:28,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:13:28,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 281 [2018-07-24 14:13:28,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:28,607 INFO L225 Difference]: With dead ends: 60605 [2018-07-24 14:13:28,607 INFO L226 Difference]: Without dead ends: 37145 [2018-07-24 14:13:28,685 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 14:13:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37145 states. [2018-07-24 14:13:29,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37145 to 37139. [2018-07-24 14:13:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37139 states. [2018-07-24 14:13:29,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37139 states to 37139 states and 47844 transitions. [2018-07-24 14:13:29,793 INFO L78 Accepts]: Start accepts. Automaton has 37139 states and 47844 transitions. Word has length 281 [2018-07-24 14:13:29,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:29,793 INFO L471 AbstractCegarLoop]: Abstraction has 37139 states and 47844 transitions. [2018-07-24 14:13:29,794 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:13:29,794 INFO L276 IsEmpty]: Start isEmpty. Operand 37139 states and 47844 transitions. [2018-07-24 14:13:29,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-07-24 14:13:29,870 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:29,870 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:13:29,871 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 14:13:29,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1590625665, now seen corresponding path program 1 times [2018-07-24 14:13:29,871 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:29,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:29,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:29,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:29,873 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 105 proven. 141 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 14:13:30,975 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:30,975 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:13:30,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:30,991 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:31,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-07-24 14:13:31,588 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-07-24 14:13:32,188 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:13:32,188 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2018-07-24 14:13:32,188 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:32,189 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:13:32,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:13:32,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:13:32,190 INFO L87 Difference]: Start difference. First operand 37139 states and 47844 transitions. Second operand 5 states. [2018-07-24 14:13:42,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:42,484 INFO L93 Difference]: Finished difference Result 108809 states and 144821 transitions. [2018-07-24 14:13:42,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:13:42,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 437 [2018-07-24 14:13:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:42,667 INFO L225 Difference]: With dead ends: 108809 [2018-07-24 14:13:42,668 INFO L226 Difference]: Without dead ends: 57854 [2018-07-24 14:13:42,794 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 871 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:13:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57854 states. [2018-07-24 14:13:43,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57854 to 57717. [2018-07-24 14:13:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57717 states. [2018-07-24 14:13:43,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57717 states to 57717 states and 71619 transitions. [2018-07-24 14:13:43,823 INFO L78 Accepts]: Start accepts. Automaton has 57717 states and 71619 transitions. Word has length 437 [2018-07-24 14:13:43,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:43,824 INFO L471 AbstractCegarLoop]: Abstraction has 57717 states and 71619 transitions. [2018-07-24 14:13:43,824 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:13:43,824 INFO L276 IsEmpty]: Start isEmpty. Operand 57717 states and 71619 transitions. [2018-07-24 14:13:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-07-24 14:13:43,889 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:43,890 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:13:43,890 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 14:13:43,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1710193960, now seen corresponding path program 1 times [2018-07-24 14:13:43,890 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:43,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:43,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:43,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:43,892 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:45,183 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:45,183 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 14:13:45,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:45,191 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:45,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:45,655 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:46,068 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:46,068 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:13:46,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:46,085 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:46,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:47,282 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:13:48,621 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:13:48,621 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 14 [2018-07-24 14:13:48,622 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:13:48,623 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 14:13:48,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 14:13:48,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:13:48,623 INFO L87 Difference]: Start difference. First operand 57717 states and 71619 transitions. Second operand 8 states. [2018-07-24 14:14:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:21,166 INFO L93 Difference]: Finished difference Result 201355 states and 281615 transitions. [2018-07-24 14:14:21,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-24 14:14:21,166 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 504 [2018-07-24 14:14:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:14:21,718 INFO L225 Difference]: With dead ends: 201355 [2018-07-24 14:14:21,718 INFO L226 Difference]: Without dead ends: 143644 [2018-07-24 14:14:22,073 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2076 GetRequests, 2028 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=405, Invalid=1757, Unknown=0, NotChecked=0, Total=2162 [2018-07-24 14:14:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143644 states. [2018-07-24 14:14:24,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143644 to 140852. [2018-07-24 14:14:24,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140852 states. [2018-07-24 14:14:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140852 states to 140852 states and 179594 transitions. [2018-07-24 14:14:24,700 INFO L78 Accepts]: Start accepts. Automaton has 140852 states and 179594 transitions. Word has length 504 [2018-07-24 14:14:24,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:24,701 INFO L471 AbstractCegarLoop]: Abstraction has 140852 states and 179594 transitions. [2018-07-24 14:14:24,701 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 14:14:24,701 INFO L276 IsEmpty]: Start isEmpty. Operand 140852 states and 179594 transitions. [2018-07-24 14:14:24,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2018-07-24 14:14:24,807 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:24,808 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:24,808 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 14:14:24,809 INFO L82 PathProgramCache]: Analyzing trace with hash 701340985, now seen corresponding path program 1 times [2018-07-24 14:14:24,809 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:24,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:24,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:24,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:24,810 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:26,611 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 14 proven. 145 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-07-24 14:14:26,612 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:26,612 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 14:14:26,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:26,620 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:26,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:29,949 WARN L169 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-07-24 14:14:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 14 proven. 145 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-07-24 14:14:30,260 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-07-24 14:14:30,750 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:14:30,751 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-07-24 14:14:30,751 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:14:30,751 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:14:30,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:14:30,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2018-07-24 14:14:30,752 INFO L87 Difference]: Start difference. First operand 140852 states and 179594 transitions. Second operand 3 states. [2018-07-24 14:14:38,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:38,444 INFO L93 Difference]: Finished difference Result 317140 states and 413571 transitions. [2018-07-24 14:14:38,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:14:38,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 585 [2018-07-24 14:14:38,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:14:39,107 INFO L225 Difference]: With dead ends: 317140 [2018-07-24 14:14:39,107 INFO L226 Difference]: Without dead ends: 177062 [2018-07-24 14:14:39,380 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1172 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2018-07-24 14:14:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177062 states. [2018-07-24 14:14:42,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177062 to 174463. [2018-07-24 14:14:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174463 states. [2018-07-24 14:14:43,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174463 states to 174463 states and 219370 transitions. [2018-07-24 14:14:43,056 INFO L78 Accepts]: Start accepts. Automaton has 174463 states and 219370 transitions. Word has length 585 [2018-07-24 14:14:43,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:14:43,057 INFO L471 AbstractCegarLoop]: Abstraction has 174463 states and 219370 transitions. [2018-07-24 14:14:43,057 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:14:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 174463 states and 219370 transitions. [2018-07-24 14:14:43,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2018-07-24 14:14:43,111 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:14:43,112 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:43,112 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 14:14:43,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1548175645, now seen corresponding path program 1 times [2018-07-24 14:14:43,113 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:14:43,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:43,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:43,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:14:43,114 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:14:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 241 proven. 84 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-07-24 14:14:43,511 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:43,511 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:14:43,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:43,521 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:43,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-07-24 14:14:43,950 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 241 proven. 84 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-07-24 14:14:45,134 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:14:45,134 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:14:45,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:14:45,150 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:14:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:14:45,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:14:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-07-24 14:14:45,784 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:14:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 241 proven. 84 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-07-24 14:14:46,097 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:14:46,098 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 11 [2018-07-24 14:14:46,099 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:14:46,100 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 14:14:46,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 14:14:46,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:14:46,101 INFO L87 Difference]: Start difference. First operand 174463 states and 219370 transitions. Second operand 8 states. [2018-07-24 14:14:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:14:59,812 INFO L93 Difference]: Finished difference Result 371590 states and 471410 transitions. [2018-07-24 14:14:59,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:14:59,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 605 [2018-07-24 14:14:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:15:00,509 INFO L225 Difference]: With dead ends: 371590 [2018-07-24 14:15:00,509 INFO L226 Difference]: Without dead ends: 197901 [2018-07-24 14:15:00,714 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2433 GetRequests, 2415 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2018-07-24 14:15:00,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197901 states. [2018-07-24 14:15:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197901 to 196315. [2018-07-24 14:15:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196315 states. [2018-07-24 14:15:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196315 states to 196315 states and 244072 transitions. [2018-07-24 14:15:04,267 INFO L78 Accepts]: Start accepts. Automaton has 196315 states and 244072 transitions. Word has length 605 [2018-07-24 14:15:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:15:04,267 INFO L471 AbstractCegarLoop]: Abstraction has 196315 states and 244072 transitions. [2018-07-24 14:15:04,267 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 14:15:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand 196315 states and 244072 transitions. [2018-07-24 14:15:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2018-07-24 14:15:04,305 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:15:04,305 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:15:04,305 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 14:15:04,306 INFO L82 PathProgramCache]: Analyzing trace with hash 44566767, now seen corresponding path program 1 times [2018-07-24 14:15:04,306 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:15:04,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:04,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:04,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:15:04,307 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:15:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 272 proven. 255 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-07-24 14:15:06,555 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:15:06,555 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:15:06,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:15:06,568 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:15:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:15:06,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:15:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2018-07-24 14:15:07,068 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:15:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2018-07-24 14:15:07,308 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:15:07,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2018-07-24 14:15:07,308 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:15:07,309 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:15:07,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:15:07,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:15:07,309 INFO L87 Difference]: Start difference. First operand 196315 states and 244072 transitions. Second operand 3 states. [2018-07-24 14:15:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:15:16,975 INFO L93 Difference]: Finished difference Result 390395 states and 486318 transitions. [2018-07-24 14:15:16,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:15:16,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 617 [2018-07-24 14:15:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:15:16,979 INFO L225 Difference]: With dead ends: 390395 [2018-07-24 14:15:16,979 INFO L226 Difference]: Without dead ends: 0 [2018-07-24 14:15:17,451 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1235 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:15:17,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-24 14:15:17,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-24 14:15:17,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-24 14:15:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-24 14:15:17,454 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 617 [2018-07-24 14:15:17,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:15:17,455 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-24 14:15:17,455 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:15:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-24 14:15:17,455 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-24 14:15:17,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-24 14:15:18,858 WARN L169 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2018-07-24 14:15:19,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:19,610 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:19,710 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:19,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:19,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:19,771 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:19,777 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:19,827 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:19,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:19,902 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:19,903 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:19,968 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:19,969 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,093 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,165 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,165 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,195 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,246 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,315 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,355 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,373 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,513 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,548 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,582 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,586 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,603 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,626 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,961 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:20,962 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:21,050 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:21,113 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:21,126 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:21,287 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:21,308 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:21,309 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:21,328 WARN L169 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 857 DAG size of output: 312 [2018-07-24 14:15:22,145 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,149 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,234 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,259 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,276 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,292 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,355 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,405 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,458 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,532 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,545 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,589 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,590 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,591 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:22,614 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,038 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,051 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,072 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,082 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,160 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,180 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,199 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,201 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,211 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,226 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,482 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,518 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,526 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,617 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,631 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,632 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 14:15:23,643 WARN L169 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 857 DAG size of output: 312 [2018-07-24 14:15:29,480 WARN L169 SmtUtils]: Spent 4.85 s on a formula simplification. DAG size of input: 608 DAG size of output: 73 [2018-07-24 14:15:30,569 WARN L169 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 278 DAG size of output: 40 [2018-07-24 14:15:34,414 WARN L169 SmtUtils]: Spent 3.82 s on a formula simplification. DAG size of input: 617 DAG size of output: 69 [2018-07-24 14:15:38,095 WARN L169 SmtUtils]: Spent 3.65 s on a formula simplification. DAG size of input: 617 DAG size of output: 69 Received shutdown request... [2018-07-24 14:15:40,591 WARN L177 SmtUtils]: Removed 39 from assertion stack [2018-07-24 14:15:40,592 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-07-24 14:15:40,593 INFO L168 Benchmark]: Toolchain (without parser) took 216435.53 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-24 14:15:40,594 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:15:40,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2649.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:40,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 243.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:40,596 INFO L168 Benchmark]: Boogie Preprocessor took 837.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 903.9 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:40,597 INFO L168 Benchmark]: RCFGBuilder took 12116.99 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 162.0 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -138.3 MB). Peak memory consumption was 727.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:15:40,598 INFO L168 Benchmark]: TraceAbstraction took 200582.27 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 3.3 GB in the end (delta: -923.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-07-24 14:15:40,604 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2649.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 243.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 837.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 903.9 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12116.99 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 162.0 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -138.3 MB). Peak memory consumption was 727.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200582.27 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 3.3 GB in the end (delta: -923.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 165]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 617. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label45_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-15-40-618.csv Completed graceful shutdown