java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:19:31,137 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:19:31,139 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:19:31,152 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:19:31,153 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:19:31,154 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:19:31,155 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:19:31,157 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:19:31,159 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:19:31,160 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:19:31,161 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:19:31,161 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:19:31,162 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:19:31,163 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:19:31,164 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:19:31,165 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:19:31,166 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:19:31,168 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:19:31,171 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:19:31,172 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:19:31,173 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:19:31,175 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:19:31,177 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:19:31,178 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:19:31,178 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:19:31,179 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:19:31,180 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:19:31,181 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:19:31,182 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:19:31,184 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:19:31,184 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:19:31,185 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:19:31,185 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:19:31,185 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:19:31,186 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:19:31,187 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:19:31,188 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:19:31,206 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:19:31,206 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:19:31,208 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:19:31,211 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:19:31,211 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:19:31,212 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:19:31,212 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:19:31,212 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:19:31,212 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:19:31,213 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:19:31,213 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:19:31,214 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:19:31,214 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:19:31,215 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:19:31,215 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:19:31,215 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:19:31,216 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:19:31,216 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:19:31,216 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:19:31,216 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:19:31,216 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:19:31,217 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:19:31,217 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:19:31,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:19:31,219 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:19:31,219 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:19:31,219 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:19:31,219 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:19:31,220 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:19:31,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:19:31,220 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:19:31,221 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:19:31,221 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:19:31,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:19:31,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:19:31,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:19:31,295 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:19:31,296 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:19:31,296 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-07-24 14:19:31,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba439af3/bddba95357614f6883fee0690352ab73/FLAGb8b90d7e5 [2018-07-24 14:19:32,229 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:19:32,230 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-07-24 14:19:32,269 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba439af3/bddba95357614f6883fee0690352ab73/FLAGb8b90d7e5 [2018-07-24 14:19:32,286 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eba439af3/bddba95357614f6883fee0690352ab73 [2018-07-24 14:19:32,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:19:32,302 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:19:32,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:19:32,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:19:32,316 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:19:32,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:19:32" (1/1) ... [2018-07-24 14:19:32,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f06eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:32, skipping insertion in model container [2018-07-24 14:19:32,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:19:32" (1/1) ... [2018-07-24 14:19:32,681 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:19:33,951 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:19:33,971 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:19:34,831 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:19:35,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:35 WrapperNode [2018-07-24 14:19:35,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:19:35,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:19:35,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:19:35,218 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:19:35,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:35" (1/1) ... [2018-07-24 14:19:35,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:35" (1/1) ... [2018-07-24 14:19:35,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:19:35,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:19:35,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:19:35,522 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:19:36,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:35" (1/1) ... [2018-07-24 14:19:36,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:35" (1/1) ... [2018-07-24 14:19:36,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:35" (1/1) ... [2018-07-24 14:19:36,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:35" (1/1) ... [2018-07-24 14:19:36,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:35" (1/1) ... [2018-07-24 14:19:36,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:35" (1/1) ... [2018-07-24 14:19:36,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:35" (1/1) ... [2018-07-24 14:19:36,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:19:36,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:19:36,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:19:36,866 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:19:36,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:19:36,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:19:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:19:36,939 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:19:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:19:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:19:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:19:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:19:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:19:36,940 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:19:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:19:36,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:19:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:19:36,941 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:19:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:19:51,529 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:19:51,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:19:51 BoogieIcfgContainer [2018-07-24 14:19:51,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:19:51,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:19:51,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:19:51,535 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:19:51,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:19:32" (1/3) ... [2018-07-24 14:19:51,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd0b809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:19:51, skipping insertion in model container [2018-07-24 14:19:51,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:19:35" (2/3) ... [2018-07-24 14:19:51,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd0b809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:19:51, skipping insertion in model container [2018-07-24 14:19:51,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:19:51" (3/3) ... [2018-07-24 14:19:51,539 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26_true-unreach-call.c [2018-07-24 14:19:51,549 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:19:51,559 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:19:51,624 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:19:51,625 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:19:51,625 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:19:51,625 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:19:51,626 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:19:51,626 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:19:51,626 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:19:51,626 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:19:51,626 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:19:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 14:19:51,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-24 14:19:51,675 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:19:51,677 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] [2018-07-24 14:19:51,677 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:19:51,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1215082775, now seen corresponding path program 1 times [2018-07-24 14:19:51,686 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:19:51,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:19:51,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:19:51,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:19:51,737 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:19:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:19:52,165 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-24 14:19:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:19:52,178 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:19:52,179 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:19:52,179 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:19:52,185 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:19:52,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:19:52,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:19:52,206 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-07-24 14:20:07,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:20:07,816 INFO L93 Difference]: Finished difference Result 4105 states and 7669 transitions. [2018-07-24 14:20:07,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:20:07,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-07-24 14:20:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:20:07,879 INFO L225 Difference]: With dead ends: 4105 [2018-07-24 14:20:07,880 INFO L226 Difference]: Without dead ends: 2979 [2018-07-24 14:20:07,895 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 14:20:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2018-07-24 14:20:08,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2849. [2018-07-24 14:20:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2018-07-24 14:20:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 5075 transitions. [2018-07-24 14:20:08,129 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 5075 transitions. Word has length 45 [2018-07-24 14:20:08,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:20:08,130 INFO L471 AbstractCegarLoop]: Abstraction has 2849 states and 5075 transitions. [2018-07-24 14:20:08,130 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:20:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 5075 transitions. [2018-07-24 14:20:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-07-24 14:20:08,143 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:20:08,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:20:08,144 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 14:20:08,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1429610663, now seen corresponding path program 1 times [2018-07-24 14:20:08,144 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:20:08,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:08,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:08,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:08,148 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:20:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:20:08,835 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:20:08,835 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:20:08,835 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:20:08,838 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:20:08,838 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:20:08,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:20:08,839 INFO L87 Difference]: Start difference. First operand 2849 states and 5075 transitions. Second operand 6 states. [2018-07-24 14:20:28,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:20:28,167 INFO L93 Difference]: Finished difference Result 10635 states and 19580 transitions. [2018-07-24 14:20:28,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:20:28,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-07-24 14:20:28,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:20:28,215 INFO L225 Difference]: With dead ends: 10635 [2018-07-24 14:20:28,216 INFO L226 Difference]: Without dead ends: 7792 [2018-07-24 14:20:28,234 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:20:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2018-07-24 14:20:28,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7729. [2018-07-24 14:20:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7729 states. [2018-07-24 14:20:28,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 12373 transitions. [2018-07-24 14:20:28,461 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 12373 transitions. Word has length 116 [2018-07-24 14:20:28,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:20:28,461 INFO L471 AbstractCegarLoop]: Abstraction has 7729 states and 12373 transitions. [2018-07-24 14:20:28,462 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:20:28,462 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 12373 transitions. [2018-07-24 14:20:28,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-24 14:20:28,466 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:20:28,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:20:28,467 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:20:28,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1508034484, now seen corresponding path program 1 times [2018-07-24 14:20:28,472 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:20:28,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:28,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:28,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:28,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:20:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:28,795 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:20:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:20:28,952 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:20:28,952 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:20:28,952 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:20:28,953 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:20:28,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:20:28,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:20:28,953 INFO L87 Difference]: Start difference. First operand 7729 states and 12373 transitions. Second operand 6 states. [2018-07-24 14:20:43,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:20:43,362 INFO L93 Difference]: Finished difference Result 25316 states and 42417 transitions. [2018-07-24 14:20:43,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:20:43,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-07-24 14:20:43,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:20:43,464 INFO L225 Difference]: With dead ends: 25316 [2018-07-24 14:20:43,465 INFO L226 Difference]: Without dead ends: 17593 [2018-07-24 14:20:43,518 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:20:43,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17593 states. [2018-07-24 14:20:43,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17593 to 17518. [2018-07-24 14:20:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17518 states. [2018-07-24 14:20:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17518 states to 17518 states and 26075 transitions. [2018-07-24 14:20:43,993 INFO L78 Accepts]: Start accepts. Automaton has 17518 states and 26075 transitions. Word has length 119 [2018-07-24 14:20:43,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:20:43,993 INFO L471 AbstractCegarLoop]: Abstraction has 17518 states and 26075 transitions. [2018-07-24 14:20:43,993 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:20:43,994 INFO L276 IsEmpty]: Start isEmpty. Operand 17518 states and 26075 transitions. [2018-07-24 14:20:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-24 14:20:44,002 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:20:44,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:20:44,003 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:20:44,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1986930232, now seen corresponding path program 1 times [2018-07-24 14:20:44,004 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:20:44,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:44,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:44,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:44,005 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:20:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:44,243 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:20:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:20:44,274 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:20:44,275 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:20:44,275 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:20:44,275 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:20:44,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:20:44,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:20:44,276 INFO L87 Difference]: Start difference. First operand 17518 states and 26075 transitions. Second operand 6 states. [2018-07-24 14:20:55,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:20:55,469 INFO L93 Difference]: Finished difference Result 45753 states and 75639 transitions. [2018-07-24 14:20:55,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:20:55,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-07-24 14:20:55,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:20:55,637 INFO L225 Difference]: With dead ends: 45753 [2018-07-24 14:20:55,637 INFO L226 Difference]: Without dead ends: 28241 [2018-07-24 14:20:55,694 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:20:55,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28241 states. [2018-07-24 14:20:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28241 to 28077. [2018-07-24 14:20:56,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28077 states. [2018-07-24 14:20:56,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28077 states to 28077 states and 42424 transitions. [2018-07-24 14:20:56,421 INFO L78 Accepts]: Start accepts. Automaton has 28077 states and 42424 transitions. Word has length 129 [2018-07-24 14:20:56,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:20:56,422 INFO L471 AbstractCegarLoop]: Abstraction has 28077 states and 42424 transitions. [2018-07-24 14:20:56,422 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:20:56,422 INFO L276 IsEmpty]: Start isEmpty. Operand 28077 states and 42424 transitions. [2018-07-24 14:20:56,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-24 14:20:56,428 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:20:56,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:20:56,433 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:20:56,433 INFO L82 PathProgramCache]: Analyzing trace with hash 283470648, now seen corresponding path program 1 times [2018-07-24 14:20:56,433 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:20:56,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:56,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:56,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:56,434 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:20:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:20:56,871 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:20:56,871 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 14:20:56,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:56,890 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:20:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:56,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:20:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:20:57,178 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:20:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:20:57,706 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:20:57,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-07-24 14:20:57,706 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:20:57,707 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:20:57,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:20:57,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:20:57,708 INFO L87 Difference]: Start difference. First operand 28077 states and 42424 transitions. Second operand 4 states. [2018-07-24 14:21:12,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:21:12,383 INFO L93 Difference]: Finished difference Result 80800 states and 131856 transitions. [2018-07-24 14:21:12,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:21:12,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2018-07-24 14:21:12,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:21:12,701 INFO L225 Difference]: With dead ends: 80800 [2018-07-24 14:21:12,702 INFO L226 Difference]: Without dead ends: 52729 [2018-07-24 14:21:12,867 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:21:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52729 states. [2018-07-24 14:21:14,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52729 to 52723. [2018-07-24 14:21:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52723 states. [2018-07-24 14:21:14,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52723 states to 52723 states and 82780 transitions. [2018-07-24 14:21:14,847 INFO L78 Accepts]: Start accepts. Automaton has 52723 states and 82780 transitions. Word has length 146 [2018-07-24 14:21:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:21:14,849 INFO L471 AbstractCegarLoop]: Abstraction has 52723 states and 82780 transitions. [2018-07-24 14:21:14,849 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:21:14,849 INFO L276 IsEmpty]: Start isEmpty. Operand 52723 states and 82780 transitions. [2018-07-24 14:21:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-24 14:21:14,857 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:14,857 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:21:14,857 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:21:14,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1431270141, now seen corresponding path program 1 times [2018-07-24 14:21:14,858 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:14,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:14,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:14,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:14,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 76 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:21:15,217 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:21:15,217 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:21:15,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:15,233 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:21:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:15,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:21:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-24 14:21:15,530 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:21:15,821 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:21:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 76 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:21:16,455 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:21:16,456 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 14:21:16,456 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:21:16,457 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:21:16,458 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:21:16,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:21:16,458 INFO L87 Difference]: Start difference. First operand 52723 states and 82780 transitions. Second operand 5 states. [2018-07-24 14:21:28,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:21:28,919 INFO L93 Difference]: Finished difference Result 144322 states and 248047 transitions. [2018-07-24 14:21:28,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:21:28,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 195 [2018-07-24 14:21:28,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:21:29,387 INFO L225 Difference]: With dead ends: 144322 [2018-07-24 14:21:29,388 INFO L226 Difference]: Without dead ends: 91605 [2018-07-24 14:21:29,536 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 388 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:21:29,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91605 states. [2018-07-24 14:21:31,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91605 to 91258. [2018-07-24 14:21:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91258 states. [2018-07-24 14:21:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91258 states to 91258 states and 137579 transitions. [2018-07-24 14:21:31,381 INFO L78 Accepts]: Start accepts. Automaton has 91258 states and 137579 transitions. Word has length 195 [2018-07-24 14:21:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:21:31,382 INFO L471 AbstractCegarLoop]: Abstraction has 91258 states and 137579 transitions. [2018-07-24 14:21:31,382 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:21:31,382 INFO L276 IsEmpty]: Start isEmpty. Operand 91258 states and 137579 transitions. [2018-07-24 14:21:31,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-24 14:21:31,392 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:31,393 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:21:31,393 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:21:31,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1467795011, now seen corresponding path program 1 times [2018-07-24 14:21:31,393 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:31,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:31,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:31,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:31,394 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 76 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:21:31,748 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:21:31,748 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 14:21:32,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:32,588 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:21:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:32,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:21:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-07-24 14:21:32,864 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:21:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 76 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:21:33,378 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:21:33,378 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 14:21:33,378 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:21:33,379 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:21:33,381 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:21:33,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:21:33,381 INFO L87 Difference]: Start difference. First operand 91258 states and 137579 transitions. Second operand 5 states. [2018-07-24 14:21:53,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:21:53,706 INFO L93 Difference]: Finished difference Result 233594 states and 386971 transitions. [2018-07-24 14:21:53,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:21:53,707 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2018-07-24 14:21:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:21:54,413 INFO L225 Difference]: With dead ends: 233594 [2018-07-24 14:21:54,413 INFO L226 Difference]: Without dead ends: 142342 [2018-07-24 14:21:54,619 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 452 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:21:54,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142342 states. [2018-07-24 14:21:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142342 to 141816. [2018-07-24 14:21:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141816 states. [2018-07-24 14:21:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141816 states to 141816 states and 228579 transitions. [2018-07-24 14:21:58,299 INFO L78 Accepts]: Start accepts. Automaton has 141816 states and 228579 transitions. Word has length 227 [2018-07-24 14:21:58,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:21:58,299 INFO L471 AbstractCegarLoop]: Abstraction has 141816 states and 228579 transitions. [2018-07-24 14:21:58,299 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:21:58,299 INFO L276 IsEmpty]: Start isEmpty. Operand 141816 states and 228579 transitions. [2018-07-24 14:21:58,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-24 14:21:58,313 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:58,314 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:21:58,314 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:21:58,314 INFO L82 PathProgramCache]: Analyzing trace with hash 318563853, now seen corresponding path program 1 times [2018-07-24 14:21:58,314 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:58,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:58,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:58,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:58,316 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 14:21:58,540 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:21:58,540 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 14:21:58,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:58,548 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:21:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:58,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:21:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-07-24 14:21:58,823 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:21:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 14:21:58,908 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:21:58,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-07-24 14:21:58,908 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:21:58,909 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:21:58,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:21:58,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:21:58,909 INFO L87 Difference]: Start difference. First operand 141816 states and 228579 transitions. Second operand 3 states. [2018-07-24 14:22:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:11,756 INFO L93 Difference]: Finished difference Result 307026 states and 503926 transitions. [2018-07-24 14:22:11,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:22:11,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2018-07-24 14:22:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:12,491 INFO L225 Difference]: With dead ends: 307026 [2018-07-24 14:22:12,492 INFO L226 Difference]: Without dead ends: 166020 [2018-07-24 14:22:12,831 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:22:12,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166020 states. [2018-07-24 14:22:16,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166020 to 161188. [2018-07-24 14:22:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161188 states. [2018-07-24 14:22:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161188 states to 161188 states and 245950 transitions. [2018-07-24 14:22:17,099 INFO L78 Accepts]: Start accepts. Automaton has 161188 states and 245950 transitions. Word has length 250 [2018-07-24 14:22:17,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:22:17,099 INFO L471 AbstractCegarLoop]: Abstraction has 161188 states and 245950 transitions. [2018-07-24 14:22:17,100 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:22:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand 161188 states and 245950 transitions. [2018-07-24 14:22:17,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-07-24 14:22:17,114 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:17,115 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:22:17,115 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:22:17,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1299063786, now seen corresponding path program 1 times [2018-07-24 14:22:17,115 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:17,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:17,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:17,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:17,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:17,363 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:22:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 114 proven. 140 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:22:18,945 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:22:18,945 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:22:18,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:18,954 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:22:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:19,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:22:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-07-24 14:22:19,160 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:22:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 114 proven. 140 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:22:19,340 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:22:19,341 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 14:22:19,341 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:19,341 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:22:19,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:22:19,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:22:19,342 INFO L87 Difference]: Start difference. First operand 161188 states and 245950 transitions. Second operand 5 states. [2018-07-24 14:22:36,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:22:36,713 INFO L93 Difference]: Finished difference Result 395342 states and 622360 transitions. [2018-07-24 14:22:36,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:22:36,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2018-07-24 14:22:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:22:37,664 INFO L225 Difference]: With dead ends: 395342 [2018-07-24 14:22:37,665 INFO L226 Difference]: Without dead ends: 234964 [2018-07-24 14:22:44,918 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 541 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:22:45,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234964 states. [2018-07-24 14:22:48,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234964 to 233004. [2018-07-24 14:22:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233004 states. [2018-07-24 14:22:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233004 states to 233004 states and 335240 transitions. [2018-07-24 14:22:48,787 INFO L78 Accepts]: Start accepts. Automaton has 233004 states and 335240 transitions. Word has length 273 [2018-07-24 14:22:48,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:22:48,788 INFO L471 AbstractCegarLoop]: Abstraction has 233004 states and 335240 transitions. [2018-07-24 14:22:48,788 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:22:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 233004 states and 335240 transitions. [2018-07-24 14:22:48,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-07-24 14:22:48,805 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:22:48,806 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:22:48,806 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:22:48,806 INFO L82 PathProgramCache]: Analyzing trace with hash 875107188, now seen corresponding path program 1 times [2018-07-24 14:22:48,806 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:22:48,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:48,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:48,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:22:48,808 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:22:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:49,137 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 154 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:22:49,137 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:22:49,137 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 14:22:49,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:22:49,144 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:22:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:22:49,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:22:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-07-24 14:22:50,163 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:22:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-07-24 14:22:50,308 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:22:50,308 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-07-24 14:22:50,308 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:22:50,309 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:22:50,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:22:50,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:22:50,310 INFO L87 Difference]: Start difference. First operand 233004 states and 335240 transitions. Second operand 3 states. [2018-07-24 14:23:00,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:00,891 INFO L93 Difference]: Finished difference Result 525128 states and 770594 transitions. [2018-07-24 14:23:00,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:23:00,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2018-07-24 14:23:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:01,901 INFO L225 Difference]: With dead ends: 525128 [2018-07-24 14:23:01,901 INFO L226 Difference]: Without dead ends: 292934 [2018-07-24 14:23:03,052 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:23:03,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292934 states. [2018-07-24 14:23:06,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292934 to 290487. [2018-07-24 14:23:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290487 states. [2018-07-24 14:23:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290487 states to 290487 states and 376293 transitions. [2018-07-24 14:23:08,623 INFO L78 Accepts]: Start accepts. Automaton has 290487 states and 376293 transitions. Word has length 308 [2018-07-24 14:23:08,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:08,623 INFO L471 AbstractCegarLoop]: Abstraction has 290487 states and 376293 transitions. [2018-07-24 14:23:08,623 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:23:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand 290487 states and 376293 transitions. [2018-07-24 14:23:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-07-24 14:23:08,638 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:08,638 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:23:08,638 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:08,639 INFO L82 PathProgramCache]: Analyzing trace with hash -251605877, now seen corresponding path program 1 times [2018-07-24 14:23:08,639 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:08,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:08,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:08,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:08,640 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:09,173 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:09,174 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:23:09,174 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 14:23:09,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:09,185 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:23:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:09,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:23:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-07-24 14:23:09,391 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:23:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-07-24 14:23:09,498 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:23:09,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 8 [2018-07-24 14:23:09,498 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:09,499 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:23:09,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:23:09,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:23:09,500 INFO L87 Difference]: Start difference. First operand 290487 states and 376293 transitions. Second operand 3 states. Received shutdown request... [2018-07-24 14:23:16,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:23:16,186 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:23:16,192 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:23:16,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:23:16 BoogieIcfgContainer [2018-07-24 14:23:16,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:23:16,193 INFO L168 Benchmark]: Toolchain (without parser) took 223892.84 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.7 GB). Peak memory consumption was 677.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:23:16,195 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:23:16,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2911.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:23:16,196 INFO L168 Benchmark]: Boogie Procedure Inliner took 303.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.0 GB in the beginning and 975.1 MB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:23:16,197 INFO L168 Benchmark]: Boogie Preprocessor took 1344.04 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 947.4 MB). Free memory was 975.1 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:23:16,197 INFO L168 Benchmark]: RCFGBuilder took 14664.71 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 172.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 61.2 MB). Peak memory consumption was 751.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:23:16,198 INFO L168 Benchmark]: TraceAbstraction took 204661.42 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 374.9 MB. Max. memory is 7.1 GB. [2018-07-24 14:23:16,204 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2911.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 303.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.0 GB in the beginning and 975.1 MB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1344.04 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 947.4 MB). Free memory was 975.1 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14664.71 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 172.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 61.2 MB). Peak memory consumption was 751.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204661.42 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 374.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while BasicCegarLoop was constructing difference of abstraction (290487states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (96525 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 204.5s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 169.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6620 SDtfs, 31388 SDslu, 3933 SDs, 0 SdLazy, 51324 SolverSat, 13870 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 119.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3503 GetRequests, 3427 SyntacticMatches, 6 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=290487occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 22.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 10550 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 3833 NumberOfCodeBlocks, 3833 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 5520 ConstructedInterpolants, 0 QuantifiedInterpolants, 2882706 SizeOfPredicates, 18 NumberOfNonLiveVariables, 3225 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 25 InterpolantComputations, 13 PerfectInterpolantSequences, 3126/3792 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label26_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-23-16-220.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label26_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-23-16-220.csv Completed graceful shutdown