java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 10:28:41,962 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 10:28:41,964 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 10:28:41,976 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 10:28:41,977 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 10:28:41,978 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 10:28:41,979 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 10:28:41,981 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 10:28:41,982 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 10:28:41,983 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 10:28:41,984 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 10:28:41,984 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 10:28:41,985 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 10:28:41,986 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 10:28:41,987 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 10:28:41,988 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 10:28:41,989 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 10:28:41,992 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 10:28:41,996 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 10:28:41,998 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 10:28:42,001 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 10:28:42,002 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 10:28:42,005 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 10:28:42,005 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 10:28:42,005 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 10:28:42,006 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 10:28:42,008 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 10:28:42,009 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 10:28:42,009 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 10:28:42,010 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 10:28:42,010 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 10:28:42,011 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 10:28:42,011 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 10:28:42,013 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 10:28:42,014 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 10:28:42,015 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 10:28:42,016 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 [2018-09-10 10:28:42,041 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 10:28:42,041 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 10:28:42,045 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 10:28:42,045 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 10:28:42,045 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 10:28:42,045 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 10:28:42,045 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 10:28:42,046 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 10:28:42,046 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 10:28:42,046 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 10:28:42,046 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 10:28:42,047 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 10:28:42,047 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 10:28:42,048 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 10:28:42,048 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 10:28:42,048 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 10:28:42,048 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 10:28:42,048 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 10:28:42,049 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 10:28:42,049 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 10:28:42,049 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 10:28:42,049 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 10:28:42,049 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 10:28:42,051 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:28:42,051 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 10:28:42,051 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 10:28:42,052 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 10:28:42,052 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 10:28:42,052 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 10:28:42,052 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 10:28:42,052 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 10:28:42,052 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 10:28:42,053 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 10:28:42,097 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 10:28:42,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 10:28:42,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 10:28:42,116 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 10:28:42,116 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 10:28:42,117 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label40_true-unreach-call.c [2018-09-10 10:28:42,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/292c14c12/cef052616e6a47f692801c8e05fe14ec/FLAGaff4047e2 [2018-09-10 10:28:42,857 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 10:28:42,858 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label40_true-unreach-call.c [2018-09-10 10:28:42,881 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/292c14c12/cef052616e6a47f692801c8e05fe14ec/FLAGaff4047e2 [2018-09-10 10:28:42,903 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/292c14c12/cef052616e6a47f692801c8e05fe14ec [2018-09-10 10:28:42,915 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 10:28:42,919 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 10:28:42,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 10:28:42,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 10:28:42,929 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 10:28:42,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:28:42" (1/1) ... [2018-09-10 10:28:42,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10acb7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:42, skipping insertion in model container [2018-09-10 10:28:42,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:28:42" (1/1) ... [2018-09-10 10:28:43,174 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 10:28:43,668 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:28:43,692 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 10:28:43,969 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:28:44,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:44 WrapperNode [2018-09-10 10:28:44,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 10:28:44,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 10:28:44,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 10:28:44,036 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 10:28:44,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:44" (1/1) ... [2018-09-10 10:28:44,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:44" (1/1) ... [2018-09-10 10:28:44,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 10:28:44,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 10:28:44,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 10:28:44,184 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 10:28:44,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:44" (1/1) ... [2018-09-10 10:28:44,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:44" (1/1) ... [2018-09-10 10:28:44,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:44" (1/1) ... [2018-09-10 10:28:44,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:44" (1/1) ... [2018-09-10 10:28:44,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:44" (1/1) ... [2018-09-10 10:28:44,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:44" (1/1) ... [2018-09-10 10:28:44,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:44" (1/1) ... [2018-09-10 10:28:44,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 10:28:44,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 10:28:44,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 10:28:44,571 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 10:28:44,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:44" (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 [2018-09-10 10:28:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 10:28:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 10:28:44,641 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 [2018-09-10 10:28:44,641 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 [2018-09-10 10:28:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 10:28:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 10:28:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 10:28:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 10:28:49,488 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 10:28:49,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:28:49 BoogieIcfgContainer [2018-09-10 10:28:49,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 10:28:49,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 10:28:49,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 10:28:49,495 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 10:28:49,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:28:42" (1/3) ... [2018-09-10 10:28:49,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320f411a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:28:49, skipping insertion in model container [2018-09-10 10:28:49,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:28:44" (2/3) ... [2018-09-10 10:28:49,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320f411a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:28:49, skipping insertion in model container [2018-09-10 10:28:49,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:28:49" (3/3) ... [2018-09-10 10:28:49,499 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label40_true-unreach-call.c [2018-09-10 10:28:49,511 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 10:28:49,521 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 10:28:49,590 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 10:28:49,591 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 10:28:49,591 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 10:28:49,591 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 10:28:49,591 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 10:28:49,592 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 10:28:49,592 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 10:28:49,592 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 10:28:49,592 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 10:28:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-09-10 10:28:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-09-10 10:28:49,652 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:28:49,654 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:28:49,655 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:28:49,660 INFO L82 PathProgramCache]: Analyzing trace with hash -859326052, now seen corresponding path program 1 times [2018-09-10 10:28:49,662 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:28:49,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:28:49,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:28:49,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:28:49,711 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:28:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:28:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:28:50,875 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:28:50,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 10:28:50,875 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:28:50,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 10:28:50,897 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 10:28:50,898 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 10:28:50,901 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-09-10 10:28:54,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:28:54,616 INFO L93 Difference]: Finished difference Result 1054 states and 1900 transitions. [2018-09-10 10:28:54,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 10:28:54,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2018-09-10 10:28:54,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:28:54,654 INFO L225 Difference]: With dead ends: 1054 [2018-09-10 10:28:54,655 INFO L226 Difference]: Without dead ends: 736 [2018-09-10 10:28:54,663 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 10:28:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-09-10 10:28:54,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 526. [2018-09-10 10:28:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2018-09-10 10:28:54,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 886 transitions. [2018-09-10 10:28:54,783 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 886 transitions. Word has length 191 [2018-09-10 10:28:54,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:28:54,784 INFO L480 AbstractCegarLoop]: Abstraction has 526 states and 886 transitions. [2018-09-10 10:28:54,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 10:28:54,785 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 886 transitions. [2018-09-10 10:28:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-09-10 10:28:54,801 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:28:54,803 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-10 10:28:54,804 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:28:54,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1108255403, now seen corresponding path program 1 times [2018-09-10 10:28:54,805 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:28:54,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:28:54,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:28:54,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:28:54,808 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:28:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:28:55,150 WARN L175 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:28:55,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:28:55,313 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:28:55,313 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 10:28:55,313 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:28:55,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:28:55,316 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:28:55,316 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 10:28:55,316 INFO L87 Difference]: Start difference. First operand 526 states and 886 transitions. Second operand 6 states. [2018-09-10 10:28:58,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:28:58,056 INFO L93 Difference]: Finished difference Result 1492 states and 2599 transitions. [2018-09-10 10:28:58,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 10:28:58,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 201 [2018-09-10 10:28:58,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:28:58,067 INFO L225 Difference]: With dead ends: 1492 [2018-09-10 10:28:58,067 INFO L226 Difference]: Without dead ends: 972 [2018-09-10 10:28:58,070 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 10:28:58,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2018-09-10 10:28:58,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 951. [2018-09-10 10:28:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2018-09-10 10:28:58,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1526 transitions. [2018-09-10 10:28:58,118 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1526 transitions. Word has length 201 [2018-09-10 10:28:58,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:28:58,118 INFO L480 AbstractCegarLoop]: Abstraction has 951 states and 1526 transitions. [2018-09-10 10:28:58,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:28:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1526 transitions. [2018-09-10 10:28:58,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-10 10:28:58,124 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:28:58,124 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-10 10:28:58,125 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:28:58,125 INFO L82 PathProgramCache]: Analyzing trace with hash -803582056, now seen corresponding path program 1 times [2018-09-10 10:28:58,125 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:28:58,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:28:58,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:28:58,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:28:58,127 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:28:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:28:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:28:58,493 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:28:58,494 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 10:28:58,494 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:28:58,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:28:58,495 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:28:58,495 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:28:58,495 INFO L87 Difference]: Start difference. First operand 951 states and 1526 transitions. Second operand 3 states. [2018-09-10 10:29:01,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:01,047 INFO L93 Difference]: Finished difference Result 2745 states and 4537 transitions. [2018-09-10 10:29:01,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:29:01,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2018-09-10 10:29:01,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:01,068 INFO L225 Difference]: With dead ends: 2745 [2018-09-10 10:29:01,068 INFO L226 Difference]: Without dead ends: 1800 [2018-09-10 10:29:01,073 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:29:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2018-09-10 10:29:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1798. [2018-09-10 10:29:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2018-09-10 10:29:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2775 transitions. [2018-09-10 10:29:01,133 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2775 transitions. Word has length 204 [2018-09-10 10:29:01,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:01,134 INFO L480 AbstractCegarLoop]: Abstraction has 1798 states and 2775 transitions. [2018-09-10 10:29:01,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:29:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2775 transitions. [2018-09-10 10:29:01,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-09-10 10:29:01,145 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:01,146 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-10 10:29:01,146 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:29:01,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1724529435, now seen corresponding path program 1 times [2018-09-10 10:29:01,147 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:01,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:01,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:01,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:01,149 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:01,608 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:29:01,608 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-10 10:29:01,609 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:29:01,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 10:29:01,610 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 10:29:01,610 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 10:29:01,610 INFO L87 Difference]: Start difference. First operand 1798 states and 2775 transitions. Second operand 7 states. [2018-09-10 10:29:05,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:05,354 INFO L93 Difference]: Finished difference Result 5591 states and 9817 transitions. [2018-09-10 10:29:05,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 10:29:05,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2018-09-10 10:29:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:05,393 INFO L225 Difference]: With dead ends: 5591 [2018-09-10 10:29:05,394 INFO L226 Difference]: Without dead ends: 3799 [2018-09-10 10:29:05,404 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 10:29:05,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3799 states. [2018-09-10 10:29:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3799 to 3621. [2018-09-10 10:29:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3621 states. [2018-09-10 10:29:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 5701 transitions. [2018-09-10 10:29:05,557 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 5701 transitions. Word has length 209 [2018-09-10 10:29:05,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:05,559 INFO L480 AbstractCegarLoop]: Abstraction has 3621 states and 5701 transitions. [2018-09-10 10:29:05,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 10:29:05,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 5701 transitions. [2018-09-10 10:29:05,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-09-10 10:29:05,575 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:05,576 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-10 10:29:05,576 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:29:05,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1632431248, now seen corresponding path program 1 times [2018-09-10 10:29:05,577 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:05,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:05,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:05,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:05,578 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:05,819 WARN L175 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:29:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:06,208 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:29:06,208 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 10:29:06,208 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:29:06,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:29:06,209 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:29:06,209 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 10:29:06,210 INFO L87 Difference]: Start difference. First operand 3621 states and 5701 transitions. Second operand 6 states. [2018-09-10 10:29:08,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:08,437 INFO L93 Difference]: Finished difference Result 9454 states and 15492 transitions. [2018-09-10 10:29:08,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 10:29:08,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2018-09-10 10:29:08,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:08,470 INFO L225 Difference]: With dead ends: 9454 [2018-09-10 10:29:08,470 INFO L226 Difference]: Without dead ends: 5839 [2018-09-10 10:29:08,491 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 10:29:08,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5839 states. [2018-09-10 10:29:08,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5839 to 5751. [2018-09-10 10:29:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5751 states. [2018-09-10 10:29:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5751 states to 5751 states and 8277 transitions. [2018-09-10 10:29:08,667 INFO L78 Accepts]: Start accepts. Automaton has 5751 states and 8277 transitions. Word has length 216 [2018-09-10 10:29:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:08,668 INFO L480 AbstractCegarLoop]: Abstraction has 5751 states and 8277 transitions. [2018-09-10 10:29:08,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:29:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5751 states and 8277 transitions. [2018-09-10 10:29:08,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-10 10:29:08,689 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:08,689 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 10:29:08,690 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:29:08,690 INFO L82 PathProgramCache]: Analyzing trace with hash -895134751, now seen corresponding path program 1 times [2018-09-10 10:29:08,690 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:08,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:08,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:08,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:08,693 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:09,160 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:09,160 INFO L197 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 [2018-09-10 10:29:09,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:09,177 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:29:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:09,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:29:09,765 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:29:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:29:10,557 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:10,558 INFO L197 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 [2018-09-10 10:29:10,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:10,576 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:29:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:11,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:29:11,224 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:29:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:29:11,459 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:29:11,459 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4, 4, 4] total 13 [2018-09-10 10:29:11,459 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:29:11,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-10 10:29:11,462 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-10 10:29:11,462 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-09-10 10:29:11,463 INFO L87 Difference]: Start difference. First operand 5751 states and 8277 transitions. Second operand 8 states. [2018-09-10 10:29:14,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:14,292 INFO L93 Difference]: Finished difference Result 11543 states and 17418 transitions. [2018-09-10 10:29:14,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 10:29:14,294 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2018-09-10 10:29:14,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:14,325 INFO L225 Difference]: With dead ends: 11543 [2018-09-10 10:29:14,326 INFO L226 Difference]: Without dead ends: 5798 [2018-09-10 10:29:14,348 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 882 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2018-09-10 10:29:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5798 states. [2018-09-10 10:29:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5798 to 5619. [2018-09-10 10:29:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5619 states. [2018-09-10 10:29:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5619 states to 5619 states and 7610 transitions. [2018-09-10 10:29:14,543 INFO L78 Accepts]: Start accepts. Automaton has 5619 states and 7610 transitions. Word has length 222 [2018-09-10 10:29:14,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:14,544 INFO L480 AbstractCegarLoop]: Abstraction has 5619 states and 7610 transitions. [2018-09-10 10:29:14,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-10 10:29:14,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5619 states and 7610 transitions. [2018-09-10 10:29:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-09-10 10:29:14,564 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:14,564 INFO L376 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, 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] [2018-09-10 10:29:14,565 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:29:14,565 INFO L82 PathProgramCache]: Analyzing trace with hash -2110823573, now seen corresponding path program 1 times [2018-09-10 10:29:14,565 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:14,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:14,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:14,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:14,573 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:15,111 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:15,111 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:15,111 INFO L197 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 [2018-09-10 10:29:15,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:15,119 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:29:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:15,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:15,593 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:29:15,755 WARN L175 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-10 10:29:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:16,200 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:16,200 INFO L197 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 [2018-09-10 10:29:16,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:16,216 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:29:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:16,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:16,838 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:29:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:16,982 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:29:16,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 8 [2018-09-10 10:29:16,983 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:29:16,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 10:29:16,985 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 10:29:16,985 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-09-10 10:29:16,985 INFO L87 Difference]: Start difference. First operand 5619 states and 7610 transitions. Second operand 7 states. [2018-09-10 10:29:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:22,127 INFO L93 Difference]: Finished difference Result 20935 states and 31490 transitions. [2018-09-10 10:29:22,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 10:29:22,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2018-09-10 10:29:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:22,213 INFO L225 Difference]: With dead ends: 20935 [2018-09-10 10:29:22,213 INFO L226 Difference]: Without dead ends: 15322 [2018-09-10 10:29:22,263 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1112 GetRequests, 1104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:29:22,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15322 states. [2018-09-10 10:29:22,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15322 to 14969. [2018-09-10 10:29:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14969 states. [2018-09-10 10:29:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14969 states to 14969 states and 19807 transitions. [2018-09-10 10:29:22,806 INFO L78 Accepts]: Start accepts. Automaton has 14969 states and 19807 transitions. Word has length 276 [2018-09-10 10:29:22,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:22,806 INFO L480 AbstractCegarLoop]: Abstraction has 14969 states and 19807 transitions. [2018-09-10 10:29:22,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 10:29:22,807 INFO L276 IsEmpty]: Start isEmpty. Operand 14969 states and 19807 transitions. [2018-09-10 10:29:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-09-10 10:29:22,864 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:22,864 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:29:22,865 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:29:22,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1339118199, now seen corresponding path program 1 times [2018-09-10 10:29:22,865 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:22,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:22,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:22,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:22,867 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:23,446 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:23,446 INFO L197 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 [2018-09-10 10:29:23,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:23,459 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:29:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:23,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-10 10:29:23,904 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:29:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-10 10:29:24,358 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 10:29:24,359 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [5] total 7 [2018-09-10 10:29:24,359 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:29:24,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:29:24,360 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:29:24,360 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-10 10:29:24,360 INFO L87 Difference]: Start difference. First operand 14969 states and 19807 transitions. Second operand 3 states. [2018-09-10 10:29:25,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:25,471 INFO L93 Difference]: Finished difference Result 26101 states and 34455 transitions. [2018-09-10 10:29:25,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:29:25,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 280 [2018-09-10 10:29:25,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:25,532 INFO L225 Difference]: With dead ends: 26101 [2018-09-10 10:29:25,532 INFO L226 Difference]: Without dead ends: 14967 [2018-09-10 10:29:25,554 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-10 10:29:25,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14967 states. [2018-09-10 10:29:25,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14967 to 14967. [2018-09-10 10:29:25,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14967 states. [2018-09-10 10:29:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14967 states to 14967 states and 19801 transitions. [2018-09-10 10:29:25,928 INFO L78 Accepts]: Start accepts. Automaton has 14967 states and 19801 transitions. Word has length 280 [2018-09-10 10:29:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:25,929 INFO L480 AbstractCegarLoop]: Abstraction has 14967 states and 19801 transitions. [2018-09-10 10:29:25,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:29:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand 14967 states and 19801 transitions. [2018-09-10 10:29:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-09-10 10:29:25,982 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:25,983 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:29:25,983 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:29:25,983 INFO L82 PathProgramCache]: Analyzing trace with hash -569318288, now seen corresponding path program 1 times [2018-09-10 10:29:25,983 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:25,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:25,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:25,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:25,985 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:26,338 WARN L175 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:29:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 90 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:26,867 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:26,867 INFO L197 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 [2018-09-10 10:29:26,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:26,876 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:29:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:27,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-09-10 10:29:27,332 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:29:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 89 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:29:27,798 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 10:29:27,798 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 6] total 17 [2018-09-10 10:29:27,798 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:29:27,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:29:27,799 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:29:27,799 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2018-09-10 10:29:27,799 INFO L87 Difference]: Start difference. First operand 14967 states and 19801 transitions. Second operand 6 states. [2018-09-10 10:29:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:30,441 INFO L93 Difference]: Finished difference Result 31561 states and 42642 transitions. [2018-09-10 10:29:30,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 10:29:30,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 288 [2018-09-10 10:29:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:30,523 INFO L225 Difference]: With dead ends: 31561 [2018-09-10 10:29:30,523 INFO L226 Difference]: Without dead ends: 16272 [2018-09-10 10:29:30,566 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 568 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2018-09-10 10:29:30,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16272 states. [2018-09-10 10:29:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16272 to 15946. [2018-09-10 10:29:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15946 states. [2018-09-10 10:29:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15946 states to 15946 states and 20882 transitions. [2018-09-10 10:29:31,010 INFO L78 Accepts]: Start accepts. Automaton has 15946 states and 20882 transitions. Word has length 288 [2018-09-10 10:29:31,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:31,011 INFO L480 AbstractCegarLoop]: Abstraction has 15946 states and 20882 transitions. [2018-09-10 10:29:31,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:29:31,011 INFO L276 IsEmpty]: Start isEmpty. Operand 15946 states and 20882 transitions. [2018-09-10 10:29:31,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-09-10 10:29:31,052 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:31,052 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:29:31,052 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:29:31,053 INFO L82 PathProgramCache]: Analyzing trace with hash -206211133, now seen corresponding path program 1 times [2018-09-10 10:29:31,053 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:31,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:31,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:31,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:31,054 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:31,642 WARN L175 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-10 10:29:31,827 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 93 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:29:31,827 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:31,828 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-10 10:29:31,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:31,842 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:29:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:32,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-09-10 10:29:32,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:29:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 93 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:29:32,369 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 10:29:32,370 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 10:29:32,370 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:29:32,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:29:32,371 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:29:32,371 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:29:32,371 INFO L87 Difference]: Start difference. First operand 15946 states and 20882 transitions. Second operand 5 states. [2018-09-10 10:29:35,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:35,028 INFO L93 Difference]: Finished difference Result 44547 states and 59537 transitions. [2018-09-10 10:29:35,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:29:35,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2018-09-10 10:29:35,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:35,128 INFO L225 Difference]: With dead ends: 44547 [2018-09-10 10:29:35,128 INFO L226 Difference]: Without dead ends: 28607 [2018-09-10 10:29:35,176 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 575 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-09-10 10:29:35,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28607 states. [2018-09-10 10:29:35,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28607 to 27426. [2018-09-10 10:29:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27426 states. [2018-09-10 10:29:35,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27426 states to 27426 states and 35402 transitions. [2018-09-10 10:29:35,786 INFO L78 Accepts]: Start accepts. Automaton has 27426 states and 35402 transitions. Word has length 290 [2018-09-10 10:29:35,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:35,787 INFO L480 AbstractCegarLoop]: Abstraction has 27426 states and 35402 transitions. [2018-09-10 10:29:35,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:29:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 27426 states and 35402 transitions. [2018-09-10 10:29:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-09-10 10:29:35,815 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:35,815 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 10:29:35,816 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:29:35,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1632880686, now seen corresponding path program 1 times [2018-09-10 10:29:35,816 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:35,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:35,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:35,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:35,817 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:36,383 WARN L175 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-10 10:29:36,678 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:36,679 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:29:36,679 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-10 10:29:36,679 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:29:36,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 10:29:36,680 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 10:29:36,680 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 10:29:36,680 INFO L87 Difference]: Start difference. First operand 27426 states and 35402 transitions. Second operand 7 states. [2018-09-10 10:29:39,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:39,493 INFO L93 Difference]: Finished difference Result 75134 states and 104382 transitions. [2018-09-10 10:29:39,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 10:29:39,494 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2018-09-10 10:29:39,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:39,814 INFO L225 Difference]: With dead ends: 75134 [2018-09-10 10:29:39,815 INFO L226 Difference]: Without dead ends: 53604 [2018-09-10 10:29:39,898 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:29:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53604 states. [2018-09-10 10:29:41,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53604 to 52220. [2018-09-10 10:29:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52220 states. [2018-09-10 10:29:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52220 states to 52220 states and 66647 transitions. [2018-09-10 10:29:41,670 INFO L78 Accepts]: Start accepts. Automaton has 52220 states and 66647 transitions. Word has length 304 [2018-09-10 10:29:41,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:41,671 INFO L480 AbstractCegarLoop]: Abstraction has 52220 states and 66647 transitions. [2018-09-10 10:29:41,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 10:29:41,671 INFO L276 IsEmpty]: Start isEmpty. Operand 52220 states and 66647 transitions. [2018-09-10 10:29:41,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-09-10 10:29:41,722 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:41,723 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 10:29:41,723 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:29:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1326697983, now seen corresponding path program 1 times [2018-09-10 10:29:41,723 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:41,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:41,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:41,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:41,725 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:41,993 WARN L175 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:29:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 107 proven. 24 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-10 10:29:42,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:42,410 INFO L197 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 [2018-09-10 10:29:42,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:42,425 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:29:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:42,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-10 10:29:43,191 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:29:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 107 proven. 24 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-09-10 10:29:43,626 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 10:29:43,627 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 10:29:43,627 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:29:43,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:29:43,628 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:29:43,628 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:29:43,629 INFO L87 Difference]: Start difference. First operand 52220 states and 66647 transitions. Second operand 5 states. [2018-09-10 10:29:46,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:46,393 INFO L93 Difference]: Finished difference Result 127152 states and 163719 transitions. [2018-09-10 10:29:46,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 10:29:46,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 307 [2018-09-10 10:29:46,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:46,690 INFO L225 Difference]: With dead ends: 127152 [2018-09-10 10:29:46,690 INFO L226 Difference]: Without dead ends: 74953 [2018-09-10 10:29:46,809 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 608 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-10 10:29:46,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74953 states. [2018-09-10 10:29:48,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74953 to 74240. [2018-09-10 10:29:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74240 states. [2018-09-10 10:29:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74240 states to 74240 states and 93542 transitions. [2018-09-10 10:29:48,781 INFO L78 Accepts]: Start accepts. Automaton has 74240 states and 93542 transitions. Word has length 307 [2018-09-10 10:29:48,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:48,781 INFO L480 AbstractCegarLoop]: Abstraction has 74240 states and 93542 transitions. [2018-09-10 10:29:48,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:29:48,781 INFO L276 IsEmpty]: Start isEmpty. Operand 74240 states and 93542 transitions. [2018-09-10 10:29:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-09-10 10:29:48,826 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:48,826 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:29:48,826 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:29:48,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1034631474, now seen corresponding path program 1 times [2018-09-10 10:29:48,827 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:48,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:48,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:48,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:48,828 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:49,236 WARN L175 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:29:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 113 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:49,575 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:49,575 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:29:49,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:49,583 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:29:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:49,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:49,952 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:29:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:50,096 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:50,096 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:29:50,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:50,113 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:29:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:50,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-10 10:29:50,919 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:29:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-10 10:29:51,959 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-10 10:29:51,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10, 5, 5] total 21 [2018-09-10 10:29:51,960 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:29:51,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:29:51,961 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:29:51,961 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2018-09-10 10:29:51,962 INFO L87 Difference]: Start difference. First operand 74240 states and 93542 transitions. Second operand 5 states. [2018-09-10 10:29:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:54,116 INFO L93 Difference]: Finished difference Result 188242 states and 242216 transitions. [2018-09-10 10:29:54,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:29:54,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 309 [2018-09-10 10:29:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:54,585 INFO L225 Difference]: With dead ends: 188242 [2018-09-10 10:29:54,585 INFO L226 Difference]: Without dead ends: 131001 [2018-09-10 10:29:54,722 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1224 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2018-09-10 10:29:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131001 states. [2018-09-10 10:29:58,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131001 to 129633. [2018-09-10 10:29:58,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129633 states. [2018-09-10 10:29:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129633 states to 129633 states and 162384 transitions. [2018-09-10 10:29:59,080 INFO L78 Accepts]: Start accepts. Automaton has 129633 states and 162384 transitions. Word has length 309 [2018-09-10 10:29:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:59,080 INFO L480 AbstractCegarLoop]: Abstraction has 129633 states and 162384 transitions. [2018-09-10 10:29:59,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:29:59,080 INFO L276 IsEmpty]: Start isEmpty. Operand 129633 states and 162384 transitions. [2018-09-10 10:29:59,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-09-10 10:29:59,166 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:59,166 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:29:59,167 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:29:59,167 INFO L82 PathProgramCache]: Analyzing trace with hash 694967487, now seen corresponding path program 1 times [2018-09-10 10:29:59,167 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:59,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:59,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:59,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:59,168 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:59,618 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:29:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:29:59,866 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:59,866 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:29:59,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:59,874 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:00,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 113 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:30:00,296 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:30:00,438 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:00,438 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:30:00,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:00,455 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:01,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 113 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:30:01,269 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:30:01,450 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:30:01,450 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4, 4, 4] total 15 [2018-09-10 10:30:01,450 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:30:01,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 10:30:01,451 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 10:30:01,452 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-09-10 10:30:01,452 INFO L87 Difference]: Start difference. First operand 129633 states and 162384 transitions. Second operand 10 states. [2018-09-10 10:30:12,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:30:12,579 INFO L93 Difference]: Finished difference Result 262622 states and 367442 transitions. [2018-09-10 10:30:12,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-10 10:30:12,579 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 310 [2018-09-10 10:30:12,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:30:13,381 INFO L225 Difference]: With dead ends: 262622 [2018-09-10 10:30:13,382 INFO L226 Difference]: Without dead ends: 131621 [2018-09-10 10:30:13,747 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1328 GetRequests, 1267 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=760, Invalid=2546, Unknown=0, NotChecked=0, Total=3306 [2018-09-10 10:30:13,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131621 states. [2018-09-10 10:30:17,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131621 to 119278. [2018-09-10 10:30:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119278 states. [2018-09-10 10:30:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119278 states to 119278 states and 154982 transitions. [2018-09-10 10:30:17,909 INFO L78 Accepts]: Start accepts. Automaton has 119278 states and 154982 transitions. Word has length 310 [2018-09-10 10:30:17,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:30:17,909 INFO L480 AbstractCegarLoop]: Abstraction has 119278 states and 154982 transitions. [2018-09-10 10:30:17,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-10 10:30:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 119278 states and 154982 transitions. [2018-09-10 10:30:18,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-09-10 10:30:18,008 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:30:18,008 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 10:30:18,008 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:30:18,008 INFO L82 PathProgramCache]: Analyzing trace with hash 789354965, now seen corresponding path program 1 times [2018-09-10 10:30:18,009 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:30:18,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:18,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:18,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:18,010 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:30:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:18,321 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:18,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:18,321 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:30:18,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:18,330 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:18,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:18,672 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:18,788 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:18,788 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:30:19,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:19,607 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:20,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:20,383 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:20,545 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:30:20,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 17 [2018-09-10 10:30:20,545 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:30:20,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:30:20,546 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:30:20,547 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-10 10:30:20,547 INFO L87 Difference]: Start difference. First operand 119278 states and 154982 transitions. Second operand 9 states. [2018-09-10 10:30:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:30:36,152 INFO L93 Difference]: Finished difference Result 256293 states and 360560 transitions. [2018-09-10 10:30:36,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-10 10:30:36,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2018-09-10 10:30:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:30:36,836 INFO L225 Difference]: With dead ends: 256293 [2018-09-10 10:30:36,836 INFO L226 Difference]: Without dead ends: 137031 [2018-09-10 10:30:37,102 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1371 GetRequests, 1323 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=422, Invalid=2028, Unknown=0, NotChecked=0, Total=2450 [2018-09-10 10:30:37,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137031 states. [2018-09-10 10:30:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137031 to 128671. [2018-09-10 10:30:40,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128671 states. [2018-09-10 10:30:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128671 states to 128671 states and 157049 transitions. [2018-09-10 10:30:41,097 INFO L78 Accepts]: Start accepts. Automaton has 128671 states and 157049 transitions. Word has length 329 [2018-09-10 10:30:41,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:30:41,097 INFO L480 AbstractCegarLoop]: Abstraction has 128671 states and 157049 transitions. [2018-09-10 10:30:41,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:30:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 128671 states and 157049 transitions. [2018-09-10 10:30:41,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-09-10 10:30:41,210 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:30:41,211 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:30:41,211 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:30:41,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1582672545, now seen corresponding path program 1 times [2018-09-10 10:30:41,211 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:30:41,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:41,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:41,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:41,213 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:30:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:41,755 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:41,755 INFO L197 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 [2018-09-10 10:30:41,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:41,763 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:42,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-10 10:30:42,899 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-10 10:30:43,140 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 10:30:43,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-10 10:30:43,140 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:30:43,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:30:43,141 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:30:43,141 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-10 10:30:43,141 INFO L87 Difference]: Start difference. First operand 128671 states and 157049 transitions. Second operand 3 states. [2018-09-10 10:30:46,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:30:46,591 INFO L93 Difference]: Finished difference Result 247556 states and 302688 transitions. [2018-09-10 10:30:46,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:30:46,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 354 [2018-09-10 10:30:46,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:30:46,983 INFO L225 Difference]: With dead ends: 247556 [2018-09-10 10:30:46,983 INFO L226 Difference]: Without dead ends: 118951 [2018-09-10 10:30:47,191 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 706 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-10 10:30:47,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118951 states. [2018-09-10 10:30:50,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118951 to 117486. [2018-09-10 10:30:50,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117486 states. [2018-09-10 10:30:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117486 states to 117486 states and 143099 transitions. [2018-09-10 10:30:50,484 INFO L78 Accepts]: Start accepts. Automaton has 117486 states and 143099 transitions. Word has length 354 [2018-09-10 10:30:50,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:30:50,485 INFO L480 AbstractCegarLoop]: Abstraction has 117486 states and 143099 transitions. [2018-09-10 10:30:50,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:30:50,485 INFO L276 IsEmpty]: Start isEmpty. Operand 117486 states and 143099 transitions. [2018-09-10 10:30:50,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-09-10 10:30:50,706 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:30:50,706 INFO L376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:30:50,706 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:30:50,707 INFO L82 PathProgramCache]: Analyzing trace with hash -685305379, now seen corresponding path program 1 times [2018-09-10 10:30:50,707 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:30:50,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:50,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:50,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:50,708 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:30:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:51,454 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-09-10 10:30:51,455 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:51,455 INFO L197 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 [2018-09-10 10:30:51,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:51,462 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:51,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 422 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-10 10:30:52,118 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 424 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-10 10:30:52,748 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:52,749 INFO L197 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 [2018-09-10 10:30:52,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:52,764 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:53,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 422 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-10 10:30:53,797 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 424 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-09-10 10:30:54,062 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:30:54,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-10 10:30:54,063 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:30:54,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:30:54,065 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:30:54,065 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-10 10:30:54,066 INFO L87 Difference]: Start difference. First operand 117486 states and 143099 transitions. Second operand 9 states. [2018-09-10 10:31:04,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:31:04,084 INFO L93 Difference]: Finished difference Result 219708 states and 288561 transitions. [2018-09-10 10:31:04,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-10 10:31:04,085 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 475 [2018-09-10 10:31:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:31:04,085 INFO L225 Difference]: With dead ends: 219708 [2018-09-10 10:31:04,085 INFO L226 Difference]: Without dead ends: 0 [2018-09-10 10:31:04,447 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1965 GetRequests, 1917 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1664, Unknown=0, NotChecked=0, Total=2070 [2018-09-10 10:31:04,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-10 10:31:04,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-10 10:31:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-10 10:31:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-10 10:31:04,450 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 475 [2018-09-10 10:31:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:31:04,450 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-10 10:31:04,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:31:04,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-10 10:31:04,451 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-10 10:31:04,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-10 10:31:12,368 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:12,370 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:12,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:12,505 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:12,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:12,588 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:12,720 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:12,944 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:12,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:13,254 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:13,519 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:15,101 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:15,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:16,835 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:16,886 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:16,888 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:16,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:18,934 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:24,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:28,382 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:41,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:31:41,706 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:03,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:03,569 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:03,675 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:03,947 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:04,043 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:04,591 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:05,512 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:07,292 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:09,178 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:09,436 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:09,957 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:10,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:11,859 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:12,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:12,945 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:13,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:15,418 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:16,505 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:23,581 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:24,147 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:24,545 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:26,277 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:32:27,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-09-10 10:32:27,868 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-10 10:32:27,869 INFO L168 Benchmark]: Toolchain (without parser) took 224953.02 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-09-10 10:32:27,870 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-10 10:32:27,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1114.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-10 10:32:27,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 147.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-10 10:32:27,872 INFO L168 Benchmark]: Boogie Preprocessor took 386.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -931.9 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2018-09-10 10:32:27,873 INFO L168 Benchmark]: RCFGBuilder took 4918.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 278.6 MB). Peak memory consumption was 278.6 MB. Max. memory is 7.1 GB. [2018-09-10 10:32:27,873 INFO L168 Benchmark]: TraceAbstraction took 218377.25 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -839.1 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-10 10:32:27,878 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1114.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 147.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 386.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -931.9 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4918.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 278.6 MB). Peak memory consumption was 278.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218377.25 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -839.1 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1587]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 5180. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label40_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_10-32-27-899.csv Completed graceful shutdown