java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 15:00:46,041 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 15:00:46,043 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 15:00:46,055 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 15:00:46,055 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 15:00:46,056 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 15:00:46,057 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 15:00:46,059 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 15:00:46,063 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 15:00:46,064 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 15:00:46,065 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 15:00:46,065 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 15:00:46,066 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 15:00:46,067 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 15:00:46,072 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 15:00:46,073 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 15:00:46,074 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 15:00:46,076 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 15:00:46,079 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 15:00:46,081 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 15:00:46,082 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 15:00:46,083 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 15:00:46,085 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 15:00:46,085 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 15:00:46,085 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 15:00:46,086 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 15:00:46,087 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 15:00:46,088 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 15:00:46,088 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 15:00:46,089 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 15:00:46,090 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 15:00:46,090 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 15:00:46,090 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 15:00:46,091 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 15:00:46,092 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 15:00:46,092 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 15:00:46,093 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 15:00:46,119 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 15:00:46,120 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 15:00:46,121 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 15:00:46,121 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 15:00:46,122 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 15:00:46,122 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 15:00:46,122 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 15:00:46,122 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 15:00:46,122 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 15:00:46,123 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 15:00:46,123 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 15:00:46,124 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 15:00:46,124 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 15:00:46,124 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 15:00:46,125 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 15:00:46,125 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 15:00:46,125 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 15:00:46,125 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 15:00:46,127 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 15:00:46,127 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 15:00:46,127 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 15:00:46,128 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 15:00:46,128 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 15:00:46,128 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 15:00:46,128 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 15:00:46,129 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 15:00:46,129 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 15:00:46,129 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 15:00:46,129 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 15:00:46,130 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 15:00:46,130 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 15:00:46,130 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 15:00:46,130 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 15:00:46,189 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 15:00:46,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 15:00:46,208 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 15:00:46,209 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 15:00:46,210 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 15:00:46,211 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label22_true-unreach-call.c [2018-07-24 15:00:46,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fc6f1fb4/341387b447f74e62a59b2f8fa3ee3e73/FLAGdda8e8783 [2018-07-24 15:00:46,997 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 15:00:46,998 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label22_true-unreach-call.c [2018-07-24 15:00:47,032 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fc6f1fb4/341387b447f74e62a59b2f8fa3ee3e73/FLAGdda8e8783 [2018-07-24 15:00:47,048 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fc6f1fb4/341387b447f74e62a59b2f8fa3ee3e73 [2018-07-24 15:00:47,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 15:00:47,063 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 15:00:47,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 15:00:47,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 15:00:47,073 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 15:00:47,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:00:47" (1/1) ... [2018-07-24 15:00:47,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7638dd08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:47, skipping insertion in model container [2018-07-24 15:00:47,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:00:47" (1/1) ... [2018-07-24 15:00:47,370 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 15:00:48,173 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:00:48,191 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 15:00:48,697 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:00:48,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:48 WrapperNode [2018-07-24 15:00:48,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 15:00:48,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 15:00:48,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 15:00:48,853 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 15:00:48,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:48" (1/1) ... [2018-07-24 15:00:48,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:48" (1/1) ... [2018-07-24 15:00:49,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 15:00:49,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 15:00:49,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 15:00:49,066 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 15:00:49,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:48" (1/1) ... [2018-07-24 15:00:49,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:48" (1/1) ... [2018-07-24 15:00:49,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:48" (1/1) ... [2018-07-24 15:00:49,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:48" (1/1) ... [2018-07-24 15:00:49,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:48" (1/1) ... [2018-07-24 15:00:49,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:48" (1/1) ... [2018-07-24 15:00:49,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:48" (1/1) ... [2018-07-24 15:00:49,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 15:00:49,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 15:00:49,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 15:00:49,760 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 15:00:49,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:48" (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 15:00:49,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 15:00:49,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 15:00:49,834 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 15:00:49,834 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 15:00:49,834 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 15:00:49,835 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 15:00:49,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 15:00:49,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 15:00:49,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 15:00:49,835 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 15:00:49,836 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 15:00:49,836 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 15:00:57,955 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 15:00:57,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:00:57 BoogieIcfgContainer [2018-07-24 15:00:57,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 15:00:57,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 15:00:57,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 15:00:57,965 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 15:00:57,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:00:47" (1/3) ... [2018-07-24 15:00:57,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9025d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:00:57, skipping insertion in model container [2018-07-24 15:00:57,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:00:48" (2/3) ... [2018-07-24 15:00:57,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9025d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:00:57, skipping insertion in model container [2018-07-24 15:00:57,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:00:57" (3/3) ... [2018-07-24 15:00:57,969 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label22_true-unreach-call.c [2018-07-24 15:00:57,979 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 15:00:57,990 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 15:00:58,052 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 15:00:58,052 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 15:00:58,053 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 15:00:58,053 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 15:00:58,053 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 15:00:58,053 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 15:00:58,053 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 15:00:58,054 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 15:00:58,054 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 15:00:58,091 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 15:00:58,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-24 15:00:58,101 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:00:58,102 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] [2018-07-24 15:00:58,103 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 15:00:58,108 INFO L82 PathProgramCache]: Analyzing trace with hash -80107092, now seen corresponding path program 1 times [2018-07-24 15:00:58,110 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:00:58,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:00:58,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:00:58,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:00:58,159 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:00:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:00:58,589 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 15:00:58,592 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:00:58,592 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 15:00:58,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:00:58,601 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:00:58,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:00:58,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:00:58,620 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-24 15:01:05,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:01:05,231 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-24 15:01:05,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:01:05,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-07-24 15:01:05,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:01:05,267 INFO L225 Difference]: With dead ends: 2251 [2018-07-24 15:01:05,267 INFO L226 Difference]: Without dead ends: 1474 [2018-07-24 15:01:05,281 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:01:05,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-24 15:01:05,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-24 15:01:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-24 15:01:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-07-24 15:01:05,431 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 48 [2018-07-24 15:01:05,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:01:05,432 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-07-24 15:01:05,432 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:01:05,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-07-24 15:01:05,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-24 15:01:05,444 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:05,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:05,445 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 15:01:05,445 INFO L82 PathProgramCache]: Analyzing trace with hash -571136298, now seen corresponding path program 1 times [2018-07-24 15:01:05,446 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:05,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:05,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:05,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:05,449 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:05,747 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:01:05,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:01:05,747 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:05,749 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:01:05,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:01:05,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:01:05,750 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-07-24 15:01:24,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:01:24,192 INFO L93 Difference]: Finished difference Result 5908 states and 11160 transitions. [2018-07-24 15:01:24,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 15:01:24,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-07-24 15:01:24,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:01:24,226 INFO L225 Difference]: With dead ends: 5908 [2018-07-24 15:01:24,227 INFO L226 Difference]: Without dead ends: 4440 [2018-07-24 15:01:24,241 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:01:24,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2018-07-24 15:01:24,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 4388. [2018-07-24 15:01:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4388 states. [2018-07-24 15:01:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 7148 transitions. [2018-07-24 15:01:24,405 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 7148 transitions. Word has length 120 [2018-07-24 15:01:24,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:01:24,405 INFO L471 AbstractCegarLoop]: Abstraction has 4388 states and 7148 transitions. [2018-07-24 15:01:24,405 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:01:24,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 7148 transitions. [2018-07-24 15:01:24,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-24 15:01:24,410 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:24,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:24,411 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 15:01:24,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1364824273, now seen corresponding path program 1 times [2018-07-24 15:01:24,411 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:24,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:24,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:24,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:24,413 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:24,670 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:01:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:24,753 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:01:24,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:01:24,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:24,754 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:01:24,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:01:24,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:01:24,755 INFO L87 Difference]: Start difference. First operand 4388 states and 7148 transitions. Second operand 6 states. [2018-07-24 15:01:35,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:01:35,060 INFO L93 Difference]: Finished difference Result 17447 states and 29630 transitions. [2018-07-24 15:01:35,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:01:35,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-07-24 15:01:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:01:35,150 INFO L225 Difference]: With dead ends: 17447 [2018-07-24 15:01:35,150 INFO L226 Difference]: Without dead ends: 13065 [2018-07-24 15:01:35,189 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 15:01:35,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13065 states. [2018-07-24 15:01:35,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13065 to 12964. [2018-07-24 15:01:35,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12964 states. [2018-07-24 15:01:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12964 states to 12964 states and 20062 transitions. [2018-07-24 15:01:35,560 INFO L78 Accepts]: Start accepts. Automaton has 12964 states and 20062 transitions. Word has length 143 [2018-07-24 15:01:35,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:01:35,561 INFO L471 AbstractCegarLoop]: Abstraction has 12964 states and 20062 transitions. [2018-07-24 15:01:35,561 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:01:35,561 INFO L276 IsEmpty]: Start isEmpty. Operand 12964 states and 20062 transitions. [2018-07-24 15:01:35,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-07-24 15:01:35,565 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:35,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:01:35,566 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 15:01:35,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1385294782, now seen corresponding path program 1 times [2018-07-24 15:01:35,566 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:35,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:35,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:35,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:35,568 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:35,847 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:01:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:35,921 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:01:35,921 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:01:35,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:35,922 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:01:35,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:01:35,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:01:35,922 INFO L87 Difference]: Start difference. First operand 12964 states and 20062 transitions. Second operand 6 states. [2018-07-24 15:01:42,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:01:42,948 INFO L93 Difference]: Finished difference Result 34984 states and 58787 transitions. [2018-07-24 15:01:42,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:01:42,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-07-24 15:01:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:01:43,072 INFO L225 Difference]: With dead ends: 34984 [2018-07-24 15:01:43,072 INFO L226 Difference]: Without dead ends: 22026 [2018-07-24 15:01:43,131 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 15:01:43,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22026 states. [2018-07-24 15:01:43,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22026 to 21857. [2018-07-24 15:01:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21857 states. [2018-07-24 15:01:43,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21857 states to 21857 states and 34271 transitions. [2018-07-24 15:01:43,729 INFO L78 Accepts]: Start accepts. Automaton has 21857 states and 34271 transitions. Word has length 178 [2018-07-24 15:01:43,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:01:43,729 INFO L471 AbstractCegarLoop]: Abstraction has 21857 states and 34271 transitions. [2018-07-24 15:01:43,730 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:01:43,730 INFO L276 IsEmpty]: Start isEmpty. Operand 21857 states and 34271 transitions. [2018-07-24 15:01:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-24 15:01:43,734 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:43,735 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:01:43,735 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 15:01:43,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1589196893, now seen corresponding path program 1 times [2018-07-24 15:01:43,735 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:43,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:43,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:43,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:43,737 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:44,260 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:01:44,260 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 15:01:44,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:44,277 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:01:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:44,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:01:44,679 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:44,679 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:01:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:45,075 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:01:45,075 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:01:45,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:45,105 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:01:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:45,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:01:45,538 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:45,539 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:01:45,881 WARN L169 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-07-24 15:01:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:45,962 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:01:45,963 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 15:01:45,963 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:01:45,964 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:01:45,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:01:45,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-07-24 15:01:45,967 INFO L87 Difference]: Start difference. First operand 21857 states and 34271 transitions. Second operand 9 states. [2018-07-24 15:01:59,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:01:59,101 INFO L93 Difference]: Finished difference Result 52613 states and 89940 transitions. [2018-07-24 15:01:59,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 15:01:59,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 227 [2018-07-24 15:01:59,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:01:59,290 INFO L225 Difference]: With dead ends: 52613 [2018-07-24 15:01:59,290 INFO L226 Difference]: Without dead ends: 30762 [2018-07-24 15:01:59,460 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 902 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2018-07-24 15:01:59,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30762 states. [2018-07-24 15:02:00,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30762 to 29860. [2018-07-24 15:02:00,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29860 states. [2018-07-24 15:02:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29860 states to 29860 states and 40657 transitions. [2018-07-24 15:02:00,465 INFO L78 Accepts]: Start accepts. Automaton has 29860 states and 40657 transitions. Word has length 227 [2018-07-24 15:02:00,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:00,466 INFO L471 AbstractCegarLoop]: Abstraction has 29860 states and 40657 transitions. [2018-07-24 15:02:00,466 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 15:02:00,466 INFO L276 IsEmpty]: Start isEmpty. Operand 29860 states and 40657 transitions. [2018-07-24 15:02:00,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-07-24 15:02:00,474 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:00,474 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:02:00,474 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 15:02:00,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1023713820, now seen corresponding path program 1 times [2018-07-24 15:02:00,475 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:00,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:00,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:00,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:00,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:02:01,011 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:01,011 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:02:01,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:01,025 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:01,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:02:01,559 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:02:02,390 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:02,390 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:02:02,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:02,407 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:02,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:02,812 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:02:02,812 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:02:03,191 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:02:03,191 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 15:02:03,191 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:02:03,192 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:02:03,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:02:03,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 15:02:03,193 INFO L87 Difference]: Start difference. First operand 29860 states and 40657 transitions. Second operand 9 states. [2018-07-24 15:02:16,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:16,888 INFO L93 Difference]: Finished difference Result 91338 states and 153145 transitions. [2018-07-24 15:02:16,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 15:02:16,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 254 [2018-07-24 15:02:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:17,488 INFO L225 Difference]: With dead ends: 91338 [2018-07-24 15:02:17,488 INFO L226 Difference]: Without dead ends: 59314 [2018-07-24 15:02:17,798 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1037 GetRequests, 1013 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 15:02:17,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59314 states. [2018-07-24 15:02:19,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59314 to 57467. [2018-07-24 15:02:19,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57467 states. [2018-07-24 15:02:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57467 states to 57467 states and 87723 transitions. [2018-07-24 15:02:20,110 INFO L78 Accepts]: Start accepts. Automaton has 57467 states and 87723 transitions. Word has length 254 [2018-07-24 15:02:20,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:20,111 INFO L471 AbstractCegarLoop]: Abstraction has 57467 states and 87723 transitions. [2018-07-24 15:02:20,111 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 15:02:20,111 INFO L276 IsEmpty]: Start isEmpty. Operand 57467 states and 87723 transitions. [2018-07-24 15:02:20,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-24 15:02:20,124 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:20,124 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 15:02:20,124 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 15:02:20,125 INFO L82 PathProgramCache]: Analyzing trace with hash -268696253, now seen corresponding path program 1 times [2018-07-24 15:02:20,125 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:20,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:20,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:20,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:20,127 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:21,348 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-07-24 15:02:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 82 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:02:21,471 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:21,471 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 15:02:21,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:21,479 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:21,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-07-24 15:02:21,801 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 82 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:02:22,039 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:02:22,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 12 [2018-07-24 15:02:22,040 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:02:22,040 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:02:22,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:02:22,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-07-24 15:02:22,041 INFO L87 Difference]: Start difference. First operand 57467 states and 87723 transitions. Second operand 5 states. [2018-07-24 15:02:28,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:28,528 INFO L93 Difference]: Finished difference Result 123352 states and 180141 transitions. [2018-07-24 15:02:28,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:02:28,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2018-07-24 15:02:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:29,300 INFO L225 Difference]: With dead ends: 123352 [2018-07-24 15:02:29,300 INFO L226 Difference]: Without dead ends: 63037 [2018-07-24 15:02:29,529 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 566 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-07-24 15:02:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63037 states. [2018-07-24 15:02:30,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63037 to 58739. [2018-07-24 15:02:30,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58739 states. [2018-07-24 15:02:30,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58739 states to 58739 states and 77938 transitions. [2018-07-24 15:02:30,921 INFO L78 Accepts]: Start accepts. Automaton has 58739 states and 77938 transitions. Word has length 285 [2018-07-24 15:02:30,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:30,921 INFO L471 AbstractCegarLoop]: Abstraction has 58739 states and 77938 transitions. [2018-07-24 15:02:30,921 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:02:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 58739 states and 77938 transitions. [2018-07-24 15:02:30,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-07-24 15:02:30,941 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:30,942 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 15:02:30,942 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 15:02:30,942 INFO L82 PathProgramCache]: Analyzing trace with hash -909106250, now seen corresponding path program 1 times [2018-07-24 15:02:30,942 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:30,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:30,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:30,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:30,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:31,458 WARN L169 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-07-24 15:02:32,279 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 227 proven. 212 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:02:32,279 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:32,279 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:02:32,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:32,288 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:32,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 15:02:32,538 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 15:02:32,750 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:32,750 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:02:32,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:32,766 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:33,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 15:02:33,840 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 15:02:34,474 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:02:34,475 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 15 [2018-07-24 15:02:34,475 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:02:34,476 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 15:02:34,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 15:02:34,477 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-07-24 15:02:34,477 INFO L87 Difference]: Start difference. First operand 58739 states and 77938 transitions. Second operand 13 states. [2018-07-24 15:02:54,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:54,248 INFO L93 Difference]: Finished difference Result 124907 states and 164949 transitions. [2018-07-24 15:02:54,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-24 15:02:54,249 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 408 [2018-07-24 15:02:54,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:54,439 INFO L225 Difference]: With dead ends: 124907 [2018-07-24 15:02:54,439 INFO L226 Difference]: Without dead ends: 57795 [2018-07-24 15:02:54,657 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1701 GetRequests, 1652 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=513, Invalid=1649, Unknown=0, NotChecked=0, Total=2162 [2018-07-24 15:02:54,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57795 states. [2018-07-24 15:02:55,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57795 to 53337. [2018-07-24 15:02:55,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53337 states. [2018-07-24 15:02:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53337 states to 53337 states and 64458 transitions. [2018-07-24 15:02:55,559 INFO L78 Accepts]: Start accepts. Automaton has 53337 states and 64458 transitions. Word has length 408 [2018-07-24 15:02:55,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:55,560 INFO L471 AbstractCegarLoop]: Abstraction has 53337 states and 64458 transitions. [2018-07-24 15:02:55,560 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 15:02:55,561 INFO L276 IsEmpty]: Start isEmpty. Operand 53337 states and 64458 transitions. [2018-07-24 15:02:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-07-24 15:02:55,579 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:55,579 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:02:55,580 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 15:02:55,580 INFO L82 PathProgramCache]: Analyzing trace with hash -567579935, now seen corresponding path program 1 times [2018-07-24 15:02:55,580 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:55,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:55,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:55,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:55,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 15:02:55,909 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:02:55,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 15:02:55,909 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:02:55,909 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 15:02:55,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 15:02:55,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 15:02:55,910 INFO L87 Difference]: Start difference. First operand 53337 states and 64458 transitions. Second operand 4 states. [2018-07-24 15:03:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:03:04,120 INFO L93 Difference]: Finished difference Result 129948 states and 159049 transitions. [2018-07-24 15:03:04,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 15:03:04,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 429 [2018-07-24 15:03:04,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:03:04,337 INFO L225 Difference]: With dead ends: 129948 [2018-07-24 15:03:04,337 INFO L226 Difference]: Without dead ends: 76617 [2018-07-24 15:03:04,432 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 15:03:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76617 states. [2018-07-24 15:03:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76617 to 69630. [2018-07-24 15:03:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69630 states. [2018-07-24 15:03:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69630 states to 69630 states and 83016 transitions. [2018-07-24 15:03:05,572 INFO L78 Accepts]: Start accepts. Automaton has 69630 states and 83016 transitions. Word has length 429 [2018-07-24 15:03:05,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:03:05,573 INFO L471 AbstractCegarLoop]: Abstraction has 69630 states and 83016 transitions. [2018-07-24 15:03:05,573 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 15:03:05,573 INFO L276 IsEmpty]: Start isEmpty. Operand 69630 states and 83016 transitions. [2018-07-24 15:03:05,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-07-24 15:03:05,598 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:03:05,598 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:05,598 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 15:03:05,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1116005306, now seen corresponding path program 1 times [2018-07-24 15:03:05,599 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:03:05,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:05,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:05,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:05,600 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:03:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:06,387 WARN L169 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 15:03:06,716 WARN L169 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-24 15:03:07,341 WARN L169 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-24 15:03:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 224 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 15:03:08,530 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:08,530 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:03:08,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:08,541 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:08,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-07-24 15:03:08,923 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 224 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 15:03:09,242 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:09,242 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:03:09,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:09,260 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:09,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-07-24 15:03:09,908 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 224 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 15:03:10,211 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:03:10,212 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 23 [2018-07-24 15:03:10,212 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:03:10,213 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 15:03:10,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 15:03:10,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2018-07-24 15:03:10,214 INFO L87 Difference]: Start difference. First operand 69630 states and 83016 transitions. Second operand 16 states. [2018-07-24 15:03:28,587 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2018-07-24 15:03:33,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:03:33,867 INFO L93 Difference]: Finished difference Result 143821 states and 172651 transitions. [2018-07-24 15:03:33,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-07-24 15:03:33,867 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 476 [2018-07-24 15:03:33,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:03:33,992 INFO L225 Difference]: With dead ends: 143821 [2018-07-24 15:03:33,992 INFO L226 Difference]: Without dead ends: 61436 [2018-07-24 15:03:34,090 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2010 GetRequests, 1937 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1580 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1161, Invalid=4241, Unknown=0, NotChecked=0, Total=5402 [2018-07-24 15:03:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61436 states. [2018-07-24 15:03:34,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61436 to 58127. [2018-07-24 15:03:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58127 states. [2018-07-24 15:03:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58127 states to 58127 states and 63903 transitions. [2018-07-24 15:03:34,918 INFO L78 Accepts]: Start accepts. Automaton has 58127 states and 63903 transitions. Word has length 476 [2018-07-24 15:03:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:03:34,918 INFO L471 AbstractCegarLoop]: Abstraction has 58127 states and 63903 transitions. [2018-07-24 15:03:34,918 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 15:03:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 58127 states and 63903 transitions. [2018-07-24 15:03:34,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-07-24 15:03:34,933 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:03:34,933 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:34,933 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 15:03:34,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1640365226, now seen corresponding path program 1 times [2018-07-24 15:03:34,934 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:03:34,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:34,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:34,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:34,935 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:03:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 249 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 15:03:35,935 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:35,935 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:03:35,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:35,952 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:36,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 392 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-07-24 15:03:36,339 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 249 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 15:03:37,038 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:37,038 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:03:37,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:37,055 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:37,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 392 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-07-24 15:03:37,599 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 249 proven. 94 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 15:03:37,928 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:03:37,929 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 15:03:37,929 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:03:37,929 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:03:37,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:03:37,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 15:03:37,930 INFO L87 Difference]: Start difference. First operand 58127 states and 63903 transitions. Second operand 9 states. [2018-07-24 15:03:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:03:49,587 INFO L93 Difference]: Finished difference Result 134203 states and 152008 transitions. [2018-07-24 15:03:49,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 15:03:49,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 544 [2018-07-24 15:03:49,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:03:49,745 INFO L225 Difference]: With dead ends: 134203 [2018-07-24 15:03:49,745 INFO L226 Difference]: Without dead ends: 76082 [2018-07-24 15:03:49,833 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2198 GetRequests, 2175 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 15:03:49,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76082 states. [2018-07-24 15:03:50,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76082 to 73957. [2018-07-24 15:03:50,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73957 states. [2018-07-24 15:03:50,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73957 states to 73957 states and 82117 transitions. [2018-07-24 15:03:50,836 INFO L78 Accepts]: Start accepts. Automaton has 73957 states and 82117 transitions. Word has length 544 [2018-07-24 15:03:50,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:03:50,837 INFO L471 AbstractCegarLoop]: Abstraction has 73957 states and 82117 transitions. [2018-07-24 15:03:50,837 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 15:03:50,837 INFO L276 IsEmpty]: Start isEmpty. Operand 73957 states and 82117 transitions. [2018-07-24 15:03:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2018-07-24 15:03:50,857 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:03:50,858 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:03:50,858 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 15:03:50,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1700287756, now seen corresponding path program 1 times [2018-07-24 15:03:50,858 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:03:50,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:50,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:50,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:50,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:03:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 530 proven. 84 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-07-24 15:03:51,814 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:51,814 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:03:51,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:51,822 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:52,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:52,225 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 448 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-07-24 15:03:52,225 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 448 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-07-24 15:03:52,523 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:52,524 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 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:03:52,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:52,540 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:52,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 448 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-07-24 15:03:53,185 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:53,831 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 448 proven. 2 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-07-24 15:03:53,834 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:03:53,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 14 [2018-07-24 15:03:53,834 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:03:53,835 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-24 15:03:53,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-24 15:03:53,836 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-07-24 15:03:53,836 INFO L87 Difference]: Start difference. First operand 73957 states and 82117 transitions. Second operand 12 states. [2018-07-24 15:04:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:04:05,823 INFO L93 Difference]: Finished difference Result 150022 states and 166840 transitions. [2018-07-24 15:04:05,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-07-24 15:04:05,824 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 660 [2018-07-24 15:04:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:04:05,995 INFO L225 Difference]: With dead ends: 150022 [2018-07-24 15:04:05,995 INFO L226 Difference]: Without dead ends: 65450 [2018-07-24 15:04:06,146 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2704 GetRequests, 2658 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=431, Invalid=1375, Unknown=0, NotChecked=0, Total=1806 [2018-07-24 15:04:06,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65450 states. [2018-07-24 15:04:07,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65450 to 63930. [2018-07-24 15:04:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63930 states. [2018-07-24 15:04:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63930 states to 63930 states and 68549 transitions. [2018-07-24 15:04:07,439 INFO L78 Accepts]: Start accepts. Automaton has 63930 states and 68549 transitions. Word has length 660 [2018-07-24 15:04:07,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:04:07,440 INFO L471 AbstractCegarLoop]: Abstraction has 63930 states and 68549 transitions. [2018-07-24 15:04:07,440 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-24 15:04:07,440 INFO L276 IsEmpty]: Start isEmpty. Operand 63930 states and 68549 transitions. [2018-07-24 15:04:07,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2018-07-24 15:04:07,456 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:04:07,457 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:04:07,457 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:04:07,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1085710698, now seen corresponding path program 1 times [2018-07-24 15:04:07,457 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:04:07,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:07,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:07,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:07,458 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:04:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:07,742 WARN L169 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:04:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 123 proven. 208 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 15:04:08,453 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:04:08,453 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:04:08,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:08,461 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:04:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:08,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:04:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-07-24 15:04:09,185 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:04:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 123 proven. 142 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-07-24 15:04:10,192 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:04:10,193 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 3] total 9 [2018-07-24 15:04:10,193 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:04:10,193 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:04:10,194 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:04:10,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 15:04:10,194 INFO L87 Difference]: Start difference. First operand 63930 states and 68549 transitions. Second operand 3 states. [2018-07-24 15:04:13,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:04:13,535 INFO L93 Difference]: Finished difference Result 137719 states and 147937 transitions. [2018-07-24 15:04:13,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:04:13,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 700 [2018-07-24 15:04:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:04:13,679 INFO L225 Difference]: With dead ends: 137719 [2018-07-24 15:04:13,679 INFO L226 Difference]: Without dead ends: 73757 [2018-07-24 15:04:13,757 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1407 GetRequests, 1399 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 15:04:13,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73757 states. [2018-07-24 15:04:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73757 to 71638. [2018-07-24 15:04:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71638 states. [2018-07-24 15:04:14,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71638 states to 71638 states and 76394 transitions. [2018-07-24 15:04:14,592 INFO L78 Accepts]: Start accepts. Automaton has 71638 states and 76394 transitions. Word has length 700 [2018-07-24 15:04:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:04:14,593 INFO L471 AbstractCegarLoop]: Abstraction has 71638 states and 76394 transitions. [2018-07-24 15:04:14,593 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:04:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 71638 states and 76394 transitions. [2018-07-24 15:04:14,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2018-07-24 15:04:14,628 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:04:14,628 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:04:14,629 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:04:14,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1488510926, now seen corresponding path program 1 times [2018-07-24 15:04:14,629 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:04:14,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:14,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:14,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:14,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:04:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 86 proven. 466 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-07-24 15:04:15,851 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:04:15,852 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:04:15,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:15,860 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:04:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:16,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:04:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2018-07-24 15:04:16,641 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:04:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2018-07-24 15:04:17,299 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:04:17,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 15:04:17,300 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:04:17,301 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:04:17,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:04:17,301 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 15:04:17,302 INFO L87 Difference]: Start difference. First operand 71638 states and 76394 transitions. Second operand 3 states. [2018-07-24 15:04:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:04:20,686 INFO L93 Difference]: Finished difference Result 139755 states and 149150 transitions. [2018-07-24 15:04:20,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:04:20,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 950 [2018-07-24 15:04:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:04:20,824 INFO L225 Difference]: With dead ends: 139755 [2018-07-24 15:04:20,824 INFO L226 Difference]: Without dead ends: 71638 [2018-07-24 15:04:20,903 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1913 GetRequests, 1902 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 15:04:20,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71638 states. [2018-07-24 15:04:22,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71638 to 70977. [2018-07-24 15:04:22,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70977 states. [2018-07-24 15:04:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70977 states to 70977 states and 75165 transitions. [2018-07-24 15:04:22,160 INFO L78 Accepts]: Start accepts. Automaton has 70977 states and 75165 transitions. Word has length 950 [2018-07-24 15:04:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:04:22,161 INFO L471 AbstractCegarLoop]: Abstraction has 70977 states and 75165 transitions. [2018-07-24 15:04:22,162 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:04:22,162 INFO L276 IsEmpty]: Start isEmpty. Operand 70977 states and 75165 transitions. [2018-07-24 15:04:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2018-07-24 15:04:22,209 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:04:22,210 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:04:22,210 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:04:22,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1288478065, now seen corresponding path program 1 times [2018-07-24 15:04:22,210 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:04:22,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:22,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:22,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:22,212 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:04:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 729 proven. 94 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-07-24 15:04:23,575 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:04:23,575 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:04:23,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:23,583 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:04:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:23,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:04:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 962 proven. 2 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-07-24 15:04:24,708 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:04:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 729 proven. 94 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-07-24 15:04:25,650 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:04:25,650 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:04:25,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:25,665 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:04:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:26,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:04:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 962 proven. 2 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-07-24 15:04:26,821 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:04:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 729 proven. 94 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2018-07-24 15:04:27,708 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:04:27,709 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 15:04:27,709 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:04:27,710 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:04:27,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:04:27,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:04:27,711 INFO L87 Difference]: Start difference. First operand 70977 states and 75165 transitions. Second operand 9 states. Received shutdown request... [2018-07-24 15:04:28,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 15:04:28,254 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 15:04:28,261 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 15:04:28,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:04:28 BoogieIcfgContainer [2018-07-24 15:04:28,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 15:04:28,263 INFO L168 Benchmark]: Toolchain (without parser) took 221202.34 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -929.2 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-07-24 15:04:28,264 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 15:04:28,264 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1787.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. [2018-07-24 15:04:28,265 INFO L168 Benchmark]: Boogie Procedure Inliner took 212.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 15:04:28,266 INFO L168 Benchmark]: Boogie Preprocessor took 694.25 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 873.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-07-24 15:04:28,267 INFO L168 Benchmark]: RCFGBuilder took 8197.70 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 541.2 MB). Peak memory consumption was 541.2 MB. Max. memory is 7.1 GB. [2018-07-24 15:04:28,267 INFO L168 Benchmark]: TraceAbstraction took 210303.20 ms. Allocated memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: 1.4 GB). Free memory was 1.8 GB in the beginning and 2.4 GB in the end (delta: -584.4 MB). Peak memory consumption was 836.9 MB. Max. memory is 7.1 GB. [2018-07-24 15:04:28,271 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1787.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 180.0 MB). Peak memory consumption was 180.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 212.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 694.25 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 873.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8197.70 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 541.2 MB). Peak memory consumption was 541.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210303.20 ms. Allocated memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: 1.4 GB). Free memory was 1.8 GB in the beginning and 2.4 GB in the end (delta: -584.4 MB). Peak memory consumption was 836.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was constructing difference of abstraction (70977states) and interpolant automaton (currently 5 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (535 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 210.2s OverallTime, 15 OverallIterations, 5 TraceHistogramMax, 162.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2693 SDtfs, 55491 SDslu, 3094 SDs, 0 SdLazy, 105577 SolverSat, 20949 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 121.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18540 GetRequests, 18226 SyntacticMatches, 37 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3032 ImplicationChecksByTransitivity, 14.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73957occurred 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: 13.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 28548 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 24.4s InterpolantComputationTime, 15510 NumberOfCodeBlocks, 15510 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 24544 ConstructedInterpolants, 0 QuantifiedInterpolants, 38053784 SizeOfPredicates, 6 NumberOfNonLiveVariables, 13048 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 49 InterpolantComputations, 9 PerfectInterpolantSequences, 20431/22625 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-04-28-285.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_15-04-28-285.csv Completed graceful shutdown