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_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:08:53,281 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:08:53,283 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:08:53,300 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:08:53,301 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:08:53,302 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:08:53,304 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:08:53,305 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:08:53,307 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:08:53,308 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:08:53,309 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:08:53,309 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:08:53,310 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:08:53,311 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:08:53,312 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:08:53,313 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:08:53,314 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:08:53,316 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:08:53,318 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:08:53,320 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:08:53,321 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:08:53,322 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:08:53,324 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:08:53,325 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:08:53,325 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:08:53,326 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:08:53,327 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:08:53,328 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:08:53,329 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:08:53,330 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:08:53,330 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:08:53,331 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:08:53,331 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:08:53,331 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:08:53,332 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:08:53,333 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:08:53,333 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 14:08:53,359 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:08:53,359 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:08:53,360 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:08:53,360 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:08:53,360 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:08:53,360 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:08:53,361 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:08:53,361 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:08:53,361 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:08:53,361 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:08:53,362 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:08:53,363 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:08:53,363 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:08:53,363 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:08:53,364 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:08:53,364 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:08:53,364 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:08:53,364 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:08:53,365 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:08:53,366 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:08:53,366 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:08:53,366 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:08:53,366 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:08:53,366 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:08:53,367 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:08:53,367 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:08:53,367 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:08:53,367 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:08:53,367 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:08:53,368 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:08:53,368 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:08:53,368 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:08:53,368 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:08:53,434 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:08:53,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:08:53,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:08:53,460 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:08:53,460 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:08:53,461 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c [2018-07-24 14:08:53,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a928f00/007088d4237648b780752fa516574956/FLAG86cce317a [2018-07-24 14:08:54,266 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:08:54,267 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c [2018-07-24 14:08:54,305 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a928f00/007088d4237648b780752fa516574956/FLAG86cce317a [2018-07-24 14:08:54,329 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a928f00/007088d4237648b780752fa516574956 [2018-07-24 14:08:54,342 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:08:54,344 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:08:54,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:08:54,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:08:54,357 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:08:54,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:08:54" (1/1) ... [2018-07-24 14:08:54,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a5f959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:54, skipping insertion in model container [2018-07-24 14:08:54,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:08:54" (1/1) ... [2018-07-24 14:08:54,722 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:08:55,769 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:08:55,789 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:08:56,885 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:08:57,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:57 WrapperNode [2018-07-24 14:08:57,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:08:57,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:08:57,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:08:57,142 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:08:57,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:57" (1/1) ... [2018-07-24 14:08:57,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:57" (1/1) ... [2018-07-24 14:08:57,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:08:57,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:08:57,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:08:57,388 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:08:58,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:57" (1/1) ... [2018-07-24 14:08:58,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:57" (1/1) ... [2018-07-24 14:08:58,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:57" (1/1) ... [2018-07-24 14:08:58,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:57" (1/1) ... [2018-07-24 14:08:58,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:57" (1/1) ... [2018-07-24 14:08:58,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:57" (1/1) ... [2018-07-24 14:08:58,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:57" (1/1) ... [2018-07-24 14:08:58,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:08:58,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:08:58,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:08:58,283 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:08:58,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:57" (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 14:08:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:08:58,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:08:58,361 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 14:08:58,361 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 14:08:58,361 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 14:08:58,361 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 14:08:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:08:58,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:08:58,362 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 14:08:58,362 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 14:08:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:08:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:08:58,363 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 14:08:58,364 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 14:09:10,075 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:09:10,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:09:10 BoogieIcfgContainer [2018-07-24 14:09:10,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:09:10,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:09:10,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:09:10,080 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:09:10,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:08:54" (1/3) ... [2018-07-24 14:09:10,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5043fd6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:09:10, skipping insertion in model container [2018-07-24 14:09:10,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:08:57" (2/3) ... [2018-07-24 14:09:10,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5043fd6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:09:10, skipping insertion in model container [2018-07-24 14:09:10,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:09:10" (3/3) ... [2018-07-24 14:09:10,084 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label22_true-unreach-call.c [2018-07-24 14:09:10,093 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:09:10,102 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:09:10,164 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:09:10,165 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:09:10,165 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:09:10,165 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:09:10,166 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:09:10,166 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:09:10,166 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:09:10,166 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:09:10,166 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:09:10,208 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:09:10,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-24 14:09:10,218 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:10,219 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:09:10,220 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 14:09:10,225 INFO L82 PathProgramCache]: Analyzing trace with hash -743081679, now seen corresponding path program 1 times [2018-07-24 14:09:10,228 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:10,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:10,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:10,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:10,275 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:10,738 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 14:09:10,741 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:09:10,741 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:09:10,741 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:09:10,748 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:09:10,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:09:10,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:09:10,766 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 14:09:19,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:19,227 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 14:09:19,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:09:19,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-07-24 14:09:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:19,286 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 14:09:19,286 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 14:09:19,306 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:09:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 14:09:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 14:09:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 14:09:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-07-24 14:09:19,502 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 71 [2018-07-24 14:09:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:19,503 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-07-24 14:09:19,503 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:09:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-07-24 14:09:19,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-07-24 14:09:19,512 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:19,512 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:09:19,512 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 14:09:19,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1698738186, now seen corresponding path program 1 times [2018-07-24 14:09:19,513 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:19,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:19,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:19,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:19,516 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:19,943 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:09:19,943 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:09:19,943 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:09:19,946 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:09:19,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:09:19,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:09:19,947 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 6 states. [2018-07-24 14:09:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:34,182 INFO L93 Difference]: Finished difference Result 4793 states and 8578 transitions. [2018-07-24 14:09:34,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:09:34,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-07-24 14:09:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:34,207 INFO L225 Difference]: With dead ends: 4793 [2018-07-24 14:09:34,208 INFO L226 Difference]: Without dead ends: 3195 [2018-07-24 14:09:34,215 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:09:34,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2018-07-24 14:09:34,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3170. [2018-07-24 14:09:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3170 states. [2018-07-24 14:09:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 4855 transitions. [2018-07-24 14:09:34,326 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 4855 transitions. Word has length 145 [2018-07-24 14:09:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:34,327 INFO L471 AbstractCegarLoop]: Abstraction has 3170 states and 4855 transitions. [2018-07-24 14:09:34,327 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:09:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 4855 transitions. [2018-07-24 14:09:34,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-24 14:09:34,333 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:34,333 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:09:34,333 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 14:09:34,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1806511885, now seen corresponding path program 1 times [2018-07-24 14:09:34,334 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:34,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:34,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:34,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:34,335 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:34,599 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:34,599 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:09:34,599 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:09:34,600 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:09:34,600 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:09:34,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:09:34,601 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:09:34,601 INFO L87 Difference]: Start difference. First operand 3170 states and 4855 transitions. Second operand 6 states. [2018-07-24 14:09:47,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:09:47,473 INFO L93 Difference]: Finished difference Result 11143 states and 17389 transitions. [2018-07-24 14:09:47,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:09:47,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-07-24 14:09:47,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:09:47,526 INFO L225 Difference]: With dead ends: 11143 [2018-07-24 14:09:47,528 INFO L226 Difference]: Without dead ends: 7979 [2018-07-24 14:09:47,543 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 14:09:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7979 states. [2018-07-24 14:09:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7979 to 7906. [2018-07-24 14:09:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7906 states. [2018-07-24 14:09:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 11742 transitions. [2018-07-24 14:09:47,776 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 11742 transitions. Word has length 150 [2018-07-24 14:09:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:09:47,777 INFO L471 AbstractCegarLoop]: Abstraction has 7906 states and 11742 transitions. [2018-07-24 14:09:47,777 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:09:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 11742 transitions. [2018-07-24 14:09:47,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-07-24 14:09:47,785 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:47,785 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:09:47,785 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 14:09:47,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1901996262, now seen corresponding path program 1 times [2018-07-24 14:09:47,789 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:47,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:47,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:47,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:47,790 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:09:48,154 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:09:48,154 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:09:48,154 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:09:48,155 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:09:48,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:09:48,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:09:48,156 INFO L87 Difference]: Start difference. First operand 7906 states and 11742 transitions. Second operand 5 states. [2018-07-24 14:10:06,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:06,842 INFO L93 Difference]: Finished difference Result 28904 states and 43932 transitions. [2018-07-24 14:10:06,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:10:06,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2018-07-24 14:10:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:06,949 INFO L225 Difference]: With dead ends: 28904 [2018-07-24 14:10:06,949 INFO L226 Difference]: Without dead ends: 21004 [2018-07-24 14:10:06,993 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:10:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21004 states. [2018-07-24 14:10:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21004 to 20768. [2018-07-24 14:10:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20768 states. [2018-07-24 14:10:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20768 states to 20768 states and 28537 transitions. [2018-07-24 14:10:07,633 INFO L78 Accepts]: Start accepts. Automaton has 20768 states and 28537 transitions. Word has length 175 [2018-07-24 14:10:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:07,634 INFO L471 AbstractCegarLoop]: Abstraction has 20768 states and 28537 transitions. [2018-07-24 14:10:07,634 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:10:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 20768 states and 28537 transitions. [2018-07-24 14:10:07,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-24 14:10:07,646 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:07,647 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:10:07,648 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 14:10:07,648 INFO L82 PathProgramCache]: Analyzing trace with hash 429182868, now seen corresponding path program 1 times [2018-07-24 14:10:07,648 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:07,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:07,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:07,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:07,650 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 14:10:08,132 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:10:08,132 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:10:08,132 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:08,133 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:10:08,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:10:08,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:10:08,134 INFO L87 Difference]: Start difference. First operand 20768 states and 28537 transitions. Second operand 5 states. [2018-07-24 14:10:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:20,393 INFO L93 Difference]: Finished difference Result 63397 states and 90945 transitions. [2018-07-24 14:10:20,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:10:20,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2018-07-24 14:10:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:20,549 INFO L225 Difference]: With dead ends: 63397 [2018-07-24 14:10:20,549 INFO L226 Difference]: Without dead ends: 42635 [2018-07-24 14:10:20,613 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:10:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42635 states. [2018-07-24 14:10:21,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42635 to 42223. [2018-07-24 14:10:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42223 states. [2018-07-24 14:10:21,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42223 states to 42223 states and 56536 transitions. [2018-07-24 14:10:21,891 INFO L78 Accepts]: Start accepts. Automaton has 42223 states and 56536 transitions. Word has length 228 [2018-07-24 14:10:21,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:21,892 INFO L471 AbstractCegarLoop]: Abstraction has 42223 states and 56536 transitions. [2018-07-24 14:10:21,892 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:10:21,892 INFO L276 IsEmpty]: Start isEmpty. Operand 42223 states and 56536 transitions. [2018-07-24 14:10:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-24 14:10:21,909 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:21,909 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:21,909 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 14:10:21,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1178955432, now seen corresponding path program 1 times [2018-07-24 14:10:21,910 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:21,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:21,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:21,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:21,911 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:22,212 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:10:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 128 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:10:22,602 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:10:22,602 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 14:10:22,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:22,619 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:10:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:22,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:10:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-07-24 14:10:23,184 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:10:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 128 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:10:23,728 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:10:23,728 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 14:10:23,728 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:23,730 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:10:23,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:10:23,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:10:23,731 INFO L87 Difference]: Start difference. First operand 42223 states and 56536 transitions. Second operand 5 states. [2018-07-24 14:10:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:36,270 INFO L93 Difference]: Finished difference Result 109818 states and 156270 transitions. [2018-07-24 14:10:36,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:10:36,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2018-07-24 14:10:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:36,613 INFO L225 Difference]: With dead ends: 109818 [2018-07-24 14:10:36,614 INFO L226 Difference]: Without dead ends: 67601 [2018-07-24 14:10:36,770 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 526 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:10:36,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67601 states. [2018-07-24 14:10:38,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67601 to 67222. [2018-07-24 14:10:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67222 states. [2018-07-24 14:10:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67222 states to 67222 states and 92180 transitions. [2018-07-24 14:10:38,586 INFO L78 Accepts]: Start accepts. Automaton has 67222 states and 92180 transitions. Word has length 266 [2018-07-24 14:10:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:38,586 INFO L471 AbstractCegarLoop]: Abstraction has 67222 states and 92180 transitions. [2018-07-24 14:10:38,586 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:10:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 67222 states and 92180 transitions. [2018-07-24 14:10:38,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-24 14:10:38,605 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:38,605 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:10:38,605 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 14:10:38,606 INFO L82 PathProgramCache]: Analyzing trace with hash 21705772, now seen corresponding path program 1 times [2018-07-24 14:10:38,606 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:38,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:38,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:38,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:38,616 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:39,042 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:10:39,043 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:10:39,043 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 14:10:39,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:39,059 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:10:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:39,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:10:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:10:40,148 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:10:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:10:40,459 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:10:40,459 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:10:40,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:40,490 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:10:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:40,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:10:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:10:40,839 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:10:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:10:41,145 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:10:41,146 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:10:41,146 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:10:41,148 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:10:41,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:10:41,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:10:41,149 INFO L87 Difference]: Start difference. First operand 67222 states and 92180 transitions. Second operand 9 states. [2018-07-24 14:11:05,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:05,485 INFO L93 Difference]: Finished difference Result 237840 states and 437643 transitions. [2018-07-24 14:11:05,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 14:11:05,486 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 272 [2018-07-24 14:11:05,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:06,116 INFO L225 Difference]: With dead ends: 237840 [2018-07-24 14:11:06,116 INFO L226 Difference]: Without dead ends: 140227 [2018-07-24 14:11:06,425 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1113 GetRequests, 1088 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-07-24 14:11:06,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140227 states. [2018-07-24 14:11:09,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140227 to 135242. [2018-07-24 14:11:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135242 states. [2018-07-24 14:11:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135242 states to 135242 states and 193365 transitions. [2018-07-24 14:11:11,505 INFO L78 Accepts]: Start accepts. Automaton has 135242 states and 193365 transitions. Word has length 272 [2018-07-24 14:11:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:11,506 INFO L471 AbstractCegarLoop]: Abstraction has 135242 states and 193365 transitions. [2018-07-24 14:11:11,506 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:11:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 135242 states and 193365 transitions. [2018-07-24 14:11:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-07-24 14:11:11,544 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:11,545 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:11,545 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 14:11:11,546 INFO L82 PathProgramCache]: Analyzing trace with hash 451280495, now seen corresponding path program 1 times [2018-07-24 14:11:11,546 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:11,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:11,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:11,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:11,547 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-07-24 14:11:11,903 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:11:11,904 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:11:11,904 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:11,904 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:11:11,904 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:11:11,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:11:11,905 INFO L87 Difference]: Start difference. First operand 135242 states and 193365 transitions. Second operand 4 states. [2018-07-24 14:11:22,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:22,919 INFO L93 Difference]: Finished difference Result 277055 states and 411815 transitions. [2018-07-24 14:11:22,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:11:22,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2018-07-24 14:11:22,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:23,474 INFO L225 Difference]: With dead ends: 277055 [2018-07-24 14:11:23,474 INFO L226 Difference]: Without dead ends: 164821 [2018-07-24 14:11:23,787 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 14:11:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164821 states. [2018-07-24 14:11:27,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164821 to 157063. [2018-07-24 14:11:27,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157063 states. [2018-07-24 14:11:27,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157063 states to 157063 states and 217375 transitions. [2018-07-24 14:11:27,476 INFO L78 Accepts]: Start accepts. Automaton has 157063 states and 217375 transitions. Word has length 337 [2018-07-24 14:11:27,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:27,477 INFO L471 AbstractCegarLoop]: Abstraction has 157063 states and 217375 transitions. [2018-07-24 14:11:27,477 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:11:27,478 INFO L276 IsEmpty]: Start isEmpty. Operand 157063 states and 217375 transitions. [2018-07-24 14:11:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-24 14:11:27,528 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:27,528 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:27,528 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 14:11:27,529 INFO L82 PathProgramCache]: Analyzing trace with hash -848936366, now seen corresponding path program 1 times [2018-07-24 14:11:27,529 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:27,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:27,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:27,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:27,530 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 128 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:11:27,931 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:11:27,931 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 14:11:27,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:27,939 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:11:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:28,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:11:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-07-24 14:11:28,302 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:11:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 128 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:11:29,428 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:11:29,428 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 14:11:29,429 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:29,429 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:11:29,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:11:29,430 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:11:29,430 INFO L87 Difference]: Start difference. First operand 157063 states and 217375 transitions. Second operand 5 states. [2018-07-24 14:11:39,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:39,563 INFO L93 Difference]: Finished difference Result 299448 states and 437594 transitions. [2018-07-24 14:11:39,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:11:39,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 390 [2018-07-24 14:11:39,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:40,037 INFO L225 Difference]: With dead ends: 299448 [2018-07-24 14:11:40,038 INFO L226 Difference]: Without dead ends: 142411 [2018-07-24 14:11:40,291 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 774 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:11:40,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142411 states. [2018-07-24 14:11:47,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142411 to 140651. [2018-07-24 14:11:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140651 states. [2018-07-24 14:11:48,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140651 states to 140651 states and 178855 transitions. [2018-07-24 14:11:48,311 INFO L78 Accepts]: Start accepts. Automaton has 140651 states and 178855 transitions. Word has length 390 [2018-07-24 14:11:48,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:48,312 INFO L471 AbstractCegarLoop]: Abstraction has 140651 states and 178855 transitions. [2018-07-24 14:11:48,312 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:11:48,312 INFO L276 IsEmpty]: Start isEmpty. Operand 140651 states and 178855 transitions. [2018-07-24 14:11:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-07-24 14:11:48,345 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:48,345 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 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 14:11:48,346 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 14:11:48,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1426266600, now seen corresponding path program 1 times [2018-07-24 14:11:48,346 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:48,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:48,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:48,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:48,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-07-24 14:11:48,658 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:11:48,658 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:11:48,658 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:48,658 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:11:48,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:11:48,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:11:48,659 INFO L87 Difference]: Start difference. First operand 140651 states and 178855 transitions. Second operand 3 states. [2018-07-24 14:11:55,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:55,907 INFO L93 Difference]: Finished difference Result 302675 states and 393409 transitions. [2018-07-24 14:11:55,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:11:55,908 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 459 [2018-07-24 14:11:55,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:56,437 INFO L225 Difference]: With dead ends: 302675 [2018-07-24 14:11:56,437 INFO L226 Difference]: Without dead ends: 162798 [2018-07-24 14:11:56,725 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:11:56,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162798 states. [2018-07-24 14:11:59,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162798 to 158133. [2018-07-24 14:11:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158133 states. [2018-07-24 14:11:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158133 states to 158133 states and 198940 transitions. [2018-07-24 14:11:59,789 INFO L78 Accepts]: Start accepts. Automaton has 158133 states and 198940 transitions. Word has length 459 [2018-07-24 14:11:59,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:59,789 INFO L471 AbstractCegarLoop]: Abstraction has 158133 states and 198940 transitions. [2018-07-24 14:11:59,789 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:11:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 158133 states and 198940 transitions. [2018-07-24 14:11:59,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-07-24 14:11:59,812 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:59,813 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:59,813 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 14:11:59,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1813068697, now seen corresponding path program 1 times [2018-07-24 14:11:59,814 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:59,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:59,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:59,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:59,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:12:01,388 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:01,388 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 14:12:01,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:01,397 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:01,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:01,746 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:12:01,746 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:12:02,046 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:02,046 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:12:02,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:02,063 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:02,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:12:02,770 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:12:03,441 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:12:03,442 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:12:03,442 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:12:03,443 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:12:03,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:12:03,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:12:03,444 INFO L87 Difference]: Start difference. First operand 158133 states and 198940 transitions. Second operand 9 states. [2018-07-24 14:12:22,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:22,683 INFO L93 Difference]: Finished difference Result 346061 states and 477196 transitions. [2018-07-24 14:12:22,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 14:12:22,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 510 [2018-07-24 14:12:22,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:23,503 INFO L225 Difference]: With dead ends: 346061 [2018-07-24 14:12:23,503 INFO L226 Difference]: Without dead ends: 179344 [2018-07-24 14:12:23,785 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2058 GetRequests, 2036 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:12:23,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179344 states. [2018-07-24 14:12:26,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179344 to 171120. [2018-07-24 14:12:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171120 states. [2018-07-24 14:12:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171120 states to 171120 states and 215065 transitions. [2018-07-24 14:12:27,302 INFO L78 Accepts]: Start accepts. Automaton has 171120 states and 215065 transitions. Word has length 510 [2018-07-24 14:12:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:27,303 INFO L471 AbstractCegarLoop]: Abstraction has 171120 states and 215065 transitions. [2018-07-24 14:12:27,303 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:12:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 171120 states and 215065 transitions. [2018-07-24 14:12:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2018-07-24 14:12:27,364 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:27,365 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:27,365 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:12:27,365 INFO L82 PathProgramCache]: Analyzing trace with hash 761664695, now seen corresponding path program 1 times [2018-07-24 14:12:27,365 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:27,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:27,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:27,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:27,367 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-07-24 14:12:28,910 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:12:28,911 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:12:28,911 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:28,913 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:12:28,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:12:28,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:12:28,913 INFO L87 Difference]: Start difference. First operand 171120 states and 215065 transitions. Second operand 4 states. Received shutdown request... [2018-07-24 14:12:39,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:12:39,065 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:12:39,078 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:12:39,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:12:39 BoogieIcfgContainer [2018-07-24 14:12:39,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:12:39,079 INFO L168 Benchmark]: Toolchain (without parser) took 224736.08 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 1.2 GB in the end (delta: 192.6 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-07-24 14:12:39,082 INFO L168 Benchmark]: CDTParser took 0.25 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 14:12:39,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2793.52 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 14:12:39,085 INFO L168 Benchmark]: Boogie Procedure Inliner took 245.77 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 14:12:39,086 INFO L168 Benchmark]: Boogie Preprocessor took 894.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 891.8 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 14:12:39,087 INFO L168 Benchmark]: RCFGBuilder took 11793.24 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 194.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -193.7 MB). Peak memory consumption was 759.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:12:39,090 INFO L168 Benchmark]: TraceAbstraction took 209001.78 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.4 GB in the beginning and 1.2 GB in the end (delta: 1.3 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-07-24 14:12:39,100 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2793.52 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 245.77 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 894.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 891.8 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 11793.24 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 194.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -193.7 MB). Peak memory consumption was 759.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209001.78 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.2 GB). Free memory was 2.4 GB in the beginning and 1.2 GB in the end (delta: 1.3 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 204]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 204). Cancelled while BasicCegarLoop was constructing difference of abstraction (171120states) and interpolant automaton (currently 4 states, 4 states before enhancement), while ReachableStatesComputation was computing reachable states (172032 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 208.9s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 166.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3234 SDtfs, 35315 SDslu, 2140 SDs, 0 SdLazy, 75052 SolverSat, 18213 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 123.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4560 GetRequests, 4447 SyntacticMatches, 24 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171120occurred in iteration=11, 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: 27.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 28517 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 5837 NumberOfCodeBlocks, 5837 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8033 ConstructedInterpolants, 0 QuantifiedInterpolants, 8293281 SizeOfPredicates, 2 NumberOfNonLiveVariables, 3592 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 6231/6633 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-12-39-120.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-12-39-120.csv Completed graceful shutdown