java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:55:58,739 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:55:58,741 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:55:58,761 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:55:58,762 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:55:58,763 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:55:58,765 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:55:58,767 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:55:58,770 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:55:58,771 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:55:58,780 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:55:58,780 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:55:58,781 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:55:58,784 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:55:58,785 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:55:58,788 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:55:58,789 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:55:58,792 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:55:58,794 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:55:58,798 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:55:58,799 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:55:58,800 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:55:58,803 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:55:58,806 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:55:58,807 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:55:58,808 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:55:58,809 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:55:58,810 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:55:58,810 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:55:58,816 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:55:58,817 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:55:58,818 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:55:58,818 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:55:58,818 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:55:58,819 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:55:58,822 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:55:58,822 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:55:58,850 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:55:58,850 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:55:58,851 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:55:58,851 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:55:58,852 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:55:58,852 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:55:58,852 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:55:58,856 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:55:58,856 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:55:58,856 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:55:58,856 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:55:58,857 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:55:58,857 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:55:58,857 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:55:58,858 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:55:58,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:55:58,858 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:55:58,858 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:55:58,859 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:55:58,860 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:55:58,860 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:55:58,860 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:55:58,860 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:55:58,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:55:58,861 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:55:58,861 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:55:58,861 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:55:58,861 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:55:58,861 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:55:58,862 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:55:58,862 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:55:58,862 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:55:58,862 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:55:58,923 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:55:58,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:55:58,947 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:55:58,949 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:55:58,949 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:55:58,950 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label58_true-unreach-call.c [2018-07-24 12:55:59,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a39759d/655807231e93465a86c29f99c131728e/FLAGc62beb80c [2018-07-24 12:55:59,639 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:55:59,640 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label58_true-unreach-call.c [2018-07-24 12:55:59,668 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a39759d/655807231e93465a86c29f99c131728e/FLAGc62beb80c [2018-07-24 12:55:59,688 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9a39759d/655807231e93465a86c29f99c131728e [2018-07-24 12:55:59,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:55:59,702 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:55:59,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:55:59,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:55:59,710 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:55:59,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:55:59" (1/1) ... [2018-07-24 12:55:59,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@536648b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:55:59, skipping insertion in model container [2018-07-24 12:55:59,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:55:59" (1/1) ... [2018-07-24 12:55:59,958 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:56:00,479 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:56:00,500 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:56:00,791 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:56:00,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:00 WrapperNode [2018-07-24 12:56:00,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:56:00,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:56:00,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:56:00,857 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:56:00,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:00" (1/1) ... [2018-07-24 12:56:00,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:00" (1/1) ... [2018-07-24 12:56:01,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:56:01,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:56:01,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:56:01,029 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:56:01,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:00" (1/1) ... [2018-07-24 12:56:01,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:00" (1/1) ... [2018-07-24 12:56:01,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:00" (1/1) ... [2018-07-24 12:56:01,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:00" (1/1) ... [2018-07-24 12:56:01,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:00" (1/1) ... [2018-07-24 12:56:01,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:00" (1/1) ... [2018-07-24 12:56:01,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:00" (1/1) ... [2018-07-24 12:56:01,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:56:01,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:56:01,385 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:56:01,385 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:56:01,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:56:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:56:01,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:56:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 12:56:01,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 12:56:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:56:01,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:56:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:56:01,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:56:06,471 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:56:06,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:56:06 BoogieIcfgContainer [2018-07-24 12:56:06,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:56:06,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:56:06,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:56:06,477 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:56:06,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:55:59" (1/3) ... [2018-07-24 12:56:06,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cae3e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:56:06, skipping insertion in model container [2018-07-24 12:56:06,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:00" (2/3) ... [2018-07-24 12:56:06,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cae3e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:56:06, skipping insertion in model container [2018-07-24 12:56:06,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:56:06" (3/3) ... [2018-07-24 12:56:06,481 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label58_true-unreach-call.c [2018-07-24 12:56:06,498 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:56:06,513 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:56:06,584 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:56:06,585 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:56:06,585 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:56:06,585 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:56:06,585 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:56:06,586 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:56:06,586 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:56:06,586 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:56:06,586 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:56:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-07-24 12:56:06,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-24 12:56:06,639 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:56:06,641 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:56:06,641 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:56:06,646 INFO L82 PathProgramCache]: Analyzing trace with hash 25486780, now seen corresponding path program 1 times [2018-07-24 12:56:06,649 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:56:06,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:06,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:06,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:06,701 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:56:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:07,575 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-07-24 12:56:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:07,849 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:56:07,849 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:56:07,849 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:56:07,856 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:56:07,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:56:07,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:56:07,876 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-07-24 12:56:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:56:11,697 INFO L93 Difference]: Finished difference Result 1080 states and 1936 transitions. [2018-07-24 12:56:11,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:56:11,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2018-07-24 12:56:11,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:56:11,725 INFO L225 Difference]: With dead ends: 1080 [2018-07-24 12:56:11,726 INFO L226 Difference]: Without dead ends: 762 [2018-07-24 12:56:11,734 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:56:11,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2018-07-24 12:56:11,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 520. [2018-07-24 12:56:11,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-07-24 12:56:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-07-24 12:56:11,843 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 167 [2018-07-24 12:56:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:56:11,844 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-07-24 12:56:11,845 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:56:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-07-24 12:56:11,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-24 12:56:11,857 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:56:11,861 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:56:11,861 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:56:11,862 INFO L82 PathProgramCache]: Analyzing trace with hash 256333056, now seen corresponding path program 1 times [2018-07-24 12:56:11,862 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:56:11,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:11,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:11,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:11,864 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:56:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:12,207 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:56:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:12,629 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:56:12,629 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:56:12,629 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:56:12,634 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:56:12,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:56:12,635 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:56:12,635 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 6 states. [2018-07-24 12:56:16,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:56:16,823 INFO L93 Difference]: Finished difference Result 1604 states and 2923 transitions. [2018-07-24 12:56:16,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:56:16,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2018-07-24 12:56:16,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:56:16,838 INFO L225 Difference]: With dead ends: 1604 [2018-07-24 12:56:16,839 INFO L226 Difference]: Without dead ends: 1090 [2018-07-24 12:56:16,843 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:56:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2018-07-24 12:56:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1050. [2018-07-24 12:56:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2018-07-24 12:56:16,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1724 transitions. [2018-07-24 12:56:16,898 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1724 transitions. Word has length 184 [2018-07-24 12:56:16,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:56:16,898 INFO L471 AbstractCegarLoop]: Abstraction has 1050 states and 1724 transitions. [2018-07-24 12:56:16,899 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:56:16,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1724 transitions. [2018-07-24 12:56:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-24 12:56:16,904 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:56:16,904 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 12:56:16,905 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:56:16,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1262174852, now seen corresponding path program 1 times [2018-07-24 12:56:16,905 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:56:16,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:16,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:16,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:16,907 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:56:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:17,472 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 12:56:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:17,631 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:56:17,631 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:56:17,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:17,642 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:56:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:17,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:56:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:56:18,355 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:56:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:56:19,295 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:56:19,295 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:56:19,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:19,327 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:56:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:19,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:56:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:56:19,988 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:56:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:56:20,393 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:56:20,393 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4, 4, 4] total 15 [2018-07-24 12:56:20,393 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:56:20,396 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 12:56:20,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 12:56:20,397 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:56:20,397 INFO L87 Difference]: Start difference. First operand 1050 states and 1724 transitions. Second operand 10 states. [2018-07-24 12:56:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:56:29,457 INFO L93 Difference]: Finished difference Result 4933 states and 8998 transitions. [2018-07-24 12:56:29,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-24 12:56:29,458 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 197 [2018-07-24 12:56:29,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:56:29,495 INFO L225 Difference]: With dead ends: 4933 [2018-07-24 12:56:29,495 INFO L226 Difference]: Without dead ends: 3889 [2018-07-24 12:56:29,511 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 788 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=470, Invalid=1786, Unknown=0, NotChecked=0, Total=2256 [2018-07-24 12:56:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2018-07-24 12:56:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 3681. [2018-07-24 12:56:29,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3681 states. [2018-07-24 12:56:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 5504 transitions. [2018-07-24 12:56:29,690 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 5504 transitions. Word has length 197 [2018-07-24 12:56:29,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:56:29,691 INFO L471 AbstractCegarLoop]: Abstraction has 3681 states and 5504 transitions. [2018-07-24 12:56:29,691 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 12:56:29,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 5504 transitions. [2018-07-24 12:56:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-07-24 12:56:29,702 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:56:29,703 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:56:29,703 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:56:29,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1077960764, now seen corresponding path program 1 times [2018-07-24 12:56:29,704 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:56:29,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:29,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:29,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:29,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:56:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:30,186 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:56:30,187 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:56:30,187 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:56:30,187 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:56:30,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:56:30,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:56:30,189 INFO L87 Difference]: Start difference. First operand 3681 states and 5504 transitions. Second operand 3 states. [2018-07-24 12:56:31,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:56:31,985 INFO L93 Difference]: Finished difference Result 7362 states and 11060 transitions. [2018-07-24 12:56:31,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:56:31,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2018-07-24 12:56:31,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:56:32,010 INFO L225 Difference]: With dead ends: 7362 [2018-07-24 12:56:32,010 INFO L226 Difference]: Without dead ends: 3687 [2018-07-24 12:56:32,023 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:56:32,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2018-07-24 12:56:32,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3425. [2018-07-24 12:56:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3425 states. [2018-07-24 12:56:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3425 states to 3425 states and 4764 transitions. [2018-07-24 12:56:32,127 INFO L78 Accepts]: Start accepts. Automaton has 3425 states and 4764 transitions. Word has length 213 [2018-07-24 12:56:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:56:32,128 INFO L471 AbstractCegarLoop]: Abstraction has 3425 states and 4764 transitions. [2018-07-24 12:56:32,128 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:56:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3425 states and 4764 transitions. [2018-07-24 12:56:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-24 12:56:32,140 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:56:32,140 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 12:56:32,141 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:56:32,141 INFO L82 PathProgramCache]: Analyzing trace with hash 102742418, now seen corresponding path program 1 times [2018-07-24 12:56:32,141 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:56:32,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:32,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:32,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:32,142 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:56:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:32,414 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:56:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 59 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:56:32,456 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:56:32,456 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:56:32,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:32,464 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:56:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:32,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:56:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 12:56:33,018 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:56:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 59 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:56:33,525 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:56:33,526 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:56:33,526 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:56:33,527 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:56:33,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:56:33,527 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:56:33,528 INFO L87 Difference]: Start difference. First operand 3425 states and 4764 transitions. Second operand 5 states. [2018-07-24 12:56:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:56:36,198 INFO L93 Difference]: Finished difference Result 10765 states and 15497 transitions. [2018-07-24 12:56:36,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:56:36,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2018-07-24 12:56:36,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:56:36,232 INFO L225 Difference]: With dead ends: 10765 [2018-07-24 12:56:36,233 INFO L226 Difference]: Without dead ends: 7346 [2018-07-24 12:56:36,247 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 458 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:56:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7346 states. [2018-07-24 12:56:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7346 to 7139. [2018-07-24 12:56:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7139 states. [2018-07-24 12:56:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7139 states to 7139 states and 9801 transitions. [2018-07-24 12:56:36,439 INFO L78 Accepts]: Start accepts. Automaton has 7139 states and 9801 transitions. Word has length 232 [2018-07-24 12:56:36,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:56:36,440 INFO L471 AbstractCegarLoop]: Abstraction has 7139 states and 9801 transitions. [2018-07-24 12:56:36,440 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:56:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 7139 states and 9801 transitions. [2018-07-24 12:56:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-07-24 12:56:36,459 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:56:36,460 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 12:56:36,460 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:56:36,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1444157639, now seen corresponding path program 1 times [2018-07-24 12:56:36,460 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:56:36,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:36,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:36,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:36,462 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:56:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:36,873 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:56:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 78 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:36,960 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:56:36,961 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:56:36,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:36,972 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:56:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:37,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:56:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:37,403 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:56:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:37,623 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:56:37,623 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:56:37,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:37,650 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:56:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:38,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:56:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:38,498 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:56:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:39,012 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:56:39,013 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 15 [2018-07-24 12:56:39,013 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:56:39,016 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 12:56:39,016 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 12:56:39,017 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:56:39,017 INFO L87 Difference]: Start difference. First operand 7139 states and 9801 transitions. Second operand 13 states. [2018-07-24 12:56:45,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:56:45,964 INFO L93 Difference]: Finished difference Result 24254 states and 38008 transitions. [2018-07-24 12:56:45,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-24 12:56:45,966 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 250 [2018-07-24 12:56:45,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:56:46,097 INFO L225 Difference]: With dead ends: 24254 [2018-07-24 12:56:46,098 INFO L226 Difference]: Without dead ends: 17121 [2018-07-24 12:56:46,130 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 1004 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=289, Invalid=767, Unknown=0, NotChecked=0, Total=1056 [2018-07-24 12:56:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17121 states. [2018-07-24 12:56:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17121 to 16285. [2018-07-24 12:56:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16285 states. [2018-07-24 12:56:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16285 states to 16285 states and 22494 transitions. [2018-07-24 12:56:46,764 INFO L78 Accepts]: Start accepts. Automaton has 16285 states and 22494 transitions. Word has length 250 [2018-07-24 12:56:46,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:56:46,764 INFO L471 AbstractCegarLoop]: Abstraction has 16285 states and 22494 transitions. [2018-07-24 12:56:46,764 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 12:56:46,765 INFO L276 IsEmpty]: Start isEmpty. Operand 16285 states and 22494 transitions. [2018-07-24 12:56:46,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-24 12:56:46,813 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:56:46,814 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:56:46,814 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:56:46,814 INFO L82 PathProgramCache]: Analyzing trace with hash -441003077, now seen corresponding path program 1 times [2018-07-24 12:56:46,814 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:56:46,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:46,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:46,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:46,816 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:56:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:47,414 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:56:47,414 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:56:47,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:47,429 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:56:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:47,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:56:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 12:56:48,205 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:56:48,336 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2018-07-24 12:56:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 107 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:56:48,565 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:56:48,566 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2018-07-24 12:56:48,566 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:56:48,566 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:56:48,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:56:48,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:56:48,567 INFO L87 Difference]: Start difference. First operand 16285 states and 22494 transitions. Second operand 6 states. [2018-07-24 12:56:51,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:56:51,648 INFO L93 Difference]: Finished difference Result 34859 states and 50153 transitions. [2018-07-24 12:56:51,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 12:56:51,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 282 [2018-07-24 12:56:51,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:56:51,758 INFO L225 Difference]: With dead ends: 34859 [2018-07-24 12:56:51,758 INFO L226 Difference]: Without dead ends: 17812 [2018-07-24 12:56:51,829 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 556 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:56:51,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17812 states. [2018-07-24 12:56:52,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17812 to 17330. [2018-07-24 12:56:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17330 states. [2018-07-24 12:56:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17330 states to 17330 states and 23779 transitions. [2018-07-24 12:56:52,500 INFO L78 Accepts]: Start accepts. Automaton has 17330 states and 23779 transitions. Word has length 282 [2018-07-24 12:56:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:56:52,500 INFO L471 AbstractCegarLoop]: Abstraction has 17330 states and 23779 transitions. [2018-07-24 12:56:52,500 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:56:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 17330 states and 23779 transitions. [2018-07-24 12:56:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-07-24 12:56:52,556 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:56:52,557 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:56:52,557 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:56:52,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1775575374, now seen corresponding path program 1 times [2018-07-24 12:56:52,558 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:56:52,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:52,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:52,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:52,559 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:56:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 111 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:56:53,303 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:56:53,304 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:56:53,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:53,319 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:56:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:53,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:56:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 12:56:53,915 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:56:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 111 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:56:54,054 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:56:54,055 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:56:54,055 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:56:54,055 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:56:54,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:56:54,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:56:54,056 INFO L87 Difference]: Start difference. First operand 17330 states and 23779 transitions. Second operand 5 states. [2018-07-24 12:56:57,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:56:57,125 INFO L93 Difference]: Finished difference Result 50319 states and 70348 transitions. [2018-07-24 12:56:57,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:56:57,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2018-07-24 12:56:57,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:56:57,470 INFO L225 Difference]: With dead ends: 50319 [2018-07-24 12:56:57,470 INFO L226 Difference]: Without dead ends: 32883 [2018-07-24 12:56:57,528 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 563 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:56:57,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32883 states. [2018-07-24 12:56:58,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32883 to 30114. [2018-07-24 12:56:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30114 states. [2018-07-24 12:56:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30114 states to 30114 states and 41206 transitions. [2018-07-24 12:56:58,433 INFO L78 Accepts]: Start accepts. Automaton has 30114 states and 41206 transitions. Word has length 284 [2018-07-24 12:56:58,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:56:58,433 INFO L471 AbstractCegarLoop]: Abstraction has 30114 states and 41206 transitions. [2018-07-24 12:56:58,433 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:56:58,433 INFO L276 IsEmpty]: Start isEmpty. Operand 30114 states and 41206 transitions. [2018-07-24 12:56:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-07-24 12:56:58,501 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:56:58,501 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:56:58,501 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:56:58,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1179429735, now seen corresponding path program 1 times [2018-07-24 12:56:58,502 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:56:58,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:58,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:58,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:58,503 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:56:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:59,147 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:56:59,147 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:56:59,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:59,154 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:56:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:59,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:56:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:59,608 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:56:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:59,824 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:56:59,824 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:56:59,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:59,845 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:57:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:00,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:57:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:57:00,568 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:57:00,757 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:57:00,760 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:57:00,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-07-24 12:57:00,760 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:57:00,763 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:57:00,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:57:00,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:57:00,764 INFO L87 Difference]: Start difference. First operand 30114 states and 41206 transitions. Second operand 9 states. [2018-07-24 12:57:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:57:07,481 INFO L93 Difference]: Finished difference Result 104221 states and 150170 transitions. [2018-07-24 12:57:07,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-07-24 12:57:07,482 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 303 [2018-07-24 12:57:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:57:07,889 INFO L225 Difference]: With dead ends: 104221 [2018-07-24 12:57:07,890 INFO L226 Difference]: Without dead ends: 73939 [2018-07-24 12:57:08,052 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1241 GetRequests, 1205 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=291, Invalid=1041, Unknown=0, NotChecked=0, Total=1332 [2018-07-24 12:57:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73939 states. [2018-07-24 12:57:10,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73939 to 67331. [2018-07-24 12:57:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67331 states. [2018-07-24 12:57:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67331 states to 67331 states and 89673 transitions. [2018-07-24 12:57:10,322 INFO L78 Accepts]: Start accepts. Automaton has 67331 states and 89673 transitions. Word has length 303 [2018-07-24 12:57:10,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:57:10,322 INFO L471 AbstractCegarLoop]: Abstraction has 67331 states and 89673 transitions. [2018-07-24 12:57:10,322 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:57:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 67331 states and 89673 transitions. [2018-07-24 12:57:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-07-24 12:57:10,394 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:57:10,395 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:57:10,395 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:57:10,395 INFO L82 PathProgramCache]: Analyzing trace with hash -499293258, now seen corresponding path program 1 times [2018-07-24 12:57:10,395 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:57:10,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:10,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:10,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:10,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:57:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:11,089 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 12:57:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:57:11,432 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:57:11,433 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:57:11,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:11,440 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:57:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:11,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:57:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-07-24 12:57:11,815 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:57:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 146 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:57:12,026 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:57:12,026 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 12:57:12,026 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:57:12,027 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:57:12,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:57:12,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:57:12,028 INFO L87 Difference]: Start difference. First operand 67331 states and 89673 transitions. Second operand 5 states. [2018-07-24 12:57:16,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:57:16,840 INFO L93 Difference]: Finished difference Result 191783 states and 268659 transitions. [2018-07-24 12:57:16,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:57:16,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 321 [2018-07-24 12:57:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:57:17,478 INFO L225 Difference]: With dead ends: 191783 [2018-07-24 12:57:17,479 INFO L226 Difference]: Without dead ends: 124332 [2018-07-24 12:57:17,736 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:57:17,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124332 states. [2018-07-24 12:57:21,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124332 to 119316. [2018-07-24 12:57:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119316 states. [2018-07-24 12:57:22,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119316 states to 119316 states and 155486 transitions. [2018-07-24 12:57:22,241 INFO L78 Accepts]: Start accepts. Automaton has 119316 states and 155486 transitions. Word has length 321 [2018-07-24 12:57:22,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:57:22,241 INFO L471 AbstractCegarLoop]: Abstraction has 119316 states and 155486 transitions. [2018-07-24 12:57:22,241 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:57:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 119316 states and 155486 transitions. [2018-07-24 12:57:22,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-07-24 12:57:22,357 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:57:22,358 INFO L353 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] [2018-07-24 12:57:22,358 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:57:22,359 INFO L82 PathProgramCache]: Analyzing trace with hash -529443391, now seen corresponding path program 1 times [2018-07-24 12:57:22,359 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:57:22,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:22,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:22,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:22,360 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:57:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:23,079 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 12:57:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:57:23,432 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:57:23,432 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 12:57:23,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:23,448 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:57:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:23,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:57:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 12:57:23,928 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:57:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-07-24 12:57:24,169 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:57:24,170 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2018-07-24 12:57:24,170 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:57:24,170 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:57:24,170 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:57:24,170 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:57:24,171 INFO L87 Difference]: Start difference. First operand 119316 states and 155486 transitions. Second operand 5 states. [2018-07-24 12:57:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:57:29,427 INFO L93 Difference]: Finished difference Result 326809 states and 447328 transitions. [2018-07-24 12:57:29,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:57:29,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2018-07-24 12:57:29,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:57:30,644 INFO L225 Difference]: With dead ends: 326809 [2018-07-24 12:57:30,645 INFO L226 Difference]: Without dead ends: 208115 [2018-07-24 12:57:30,906 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:57:31,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208115 states. [2018-07-24 12:57:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208115 to 203903. [2018-07-24 12:57:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203903 states. [2018-07-24 12:57:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203903 states to 203903 states and 267000 transitions. [2018-07-24 12:57:38,046 INFO L78 Accepts]: Start accepts. Automaton has 203903 states and 267000 transitions. Word has length 330 [2018-07-24 12:57:38,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:57:38,046 INFO L471 AbstractCegarLoop]: Abstraction has 203903 states and 267000 transitions. [2018-07-24 12:57:38,046 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:57:38,046 INFO L276 IsEmpty]: Start isEmpty. Operand 203903 states and 267000 transitions. [2018-07-24 12:57:38,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-07-24 12:57:38,234 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:57:38,234 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:57:38,235 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:57:38,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1494532938, now seen corresponding path program 1 times [2018-07-24 12:57:38,235 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:57:38,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:38,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:38,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:38,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:57:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 243 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-07-24 12:57:38,853 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:57:38,853 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:57:38,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:38,865 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:57:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:39,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:57:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 245 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:57:39,276 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:57:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 245 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:57:39,577 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:57:39,577 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:57:39,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:39,594 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:57:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:40,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:57:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 245 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:57:40,482 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:57:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 245 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 12:57:40,614 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:57:40,614 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-07-24 12:57:40,614 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:57:40,615 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:57:40,615 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:57:40,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:57:40,615 INFO L87 Difference]: Start difference. First operand 203903 states and 267000 transitions. Second operand 9 states. [2018-07-24 12:57:56,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:57:56,562 INFO L93 Difference]: Finished difference Result 710838 states and 1019438 transitions. [2018-07-24 12:57:56,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:57:56,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 359 [2018-07-24 12:57:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:57:59,021 INFO L225 Difference]: With dead ends: 710838 [2018-07-24 12:57:59,021 INFO L226 Difference]: Without dead ends: 507526 [2018-07-24 12:57:59,481 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1448 GetRequests, 1428 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:57:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507526 states. [2018-07-24 12:58:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507526 to 506624. [2018-07-24 12:58:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506624 states. [2018-07-24 12:58:19,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506624 states to 506624 states and 737839 transitions. [2018-07-24 12:58:19,702 INFO L78 Accepts]: Start accepts. Automaton has 506624 states and 737839 transitions. Word has length 359 [2018-07-24 12:58:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:58:19,703 INFO L471 AbstractCegarLoop]: Abstraction has 506624 states and 737839 transitions. [2018-07-24 12:58:19,703 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:58:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 506624 states and 737839 transitions. [2018-07-24 12:58:20,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-07-24 12:58:20,290 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:58:20,290 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-07-24 12:58:20,290 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:58:20,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1495829755, now seen corresponding path program 1 times [2018-07-24 12:58:20,291 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:58:20,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:58:20,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:58:20,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:58:20,292 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:58:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:58:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 12:58:20,627 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:58:20,627 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:58:20,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:58:20,635 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:58:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:58:20,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:58:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 12:58:21,061 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:58:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 12:58:21,197 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:58:21,197 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:58:21,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:58:21,214 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:58:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:58:21,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:58:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 232 proven. 115 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 12:58:22,232 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:58:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 12:58:29,574 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:58:29,574 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 8 [2018-07-24 12:58:29,574 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:58:29,575 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:58:29,575 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:58:29,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:58:29,577 INFO L87 Difference]: Start difference. First operand 506624 states and 737839 transitions. Second operand 6 states. [2018-07-24 12:58:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:58:44,603 INFO L93 Difference]: Finished difference Result 923127 states and 1318058 transitions. [2018-07-24 12:58:44,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 12:58:44,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 392 [2018-07-24 12:58:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:58:46,516 INFO L225 Difference]: With dead ends: 923127 [2018-07-24 12:58:46,516 INFO L226 Difference]: Without dead ends: 419098 [2018-07-24 12:58:48,367 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1574 GetRequests, 1560 SyntacticMatches, 7 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:58:48,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419098 states. [2018-07-24 12:58:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419098 to 418778. [2018-07-24 12:58:58,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418778 states. [2018-07-24 12:59:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418778 states to 418778 states and 570905 transitions. [2018-07-24 12:59:01,895 INFO L78 Accepts]: Start accepts. Automaton has 418778 states and 570905 transitions. Word has length 392 [2018-07-24 12:59:01,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:59:01,895 INFO L471 AbstractCegarLoop]: Abstraction has 418778 states and 570905 transitions. [2018-07-24 12:59:01,896 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:59:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 418778 states and 570905 transitions. [2018-07-24 12:59:02,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2018-07-24 12:59:02,535 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:59:02,536 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:59:02,536 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:59:02,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1966353248, now seen corresponding path program 1 times [2018-07-24 12:59:02,536 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:59:02,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:59:02,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:59:02,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:59:02,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:59:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:59:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 289 proven. 6 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-07-24 12:59:02,911 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:59:02,911 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:59:02,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:59:02,918 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:59:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:59:04,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:59:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2018-07-24 12:59:04,689 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:59:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 289 proven. 6 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-07-24 12:59:04,895 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:59:04,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2018-07-24 12:59:04,896 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:59:04,897 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:59:04,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:59:04,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:59:04,897 INFO L87 Difference]: Start difference. First operand 418778 states and 570905 transitions. Second operand 3 states. Received shutdown request... [2018-07-24 12:59:25,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:59:25,132 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:59:25,139 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:59:25,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:59:25 BoogieIcfgContainer [2018-07-24 12:59:25,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:59:25,141 INFO L168 Benchmark]: Toolchain (without parser) took 205440.29 ms. Allocated memory was 1.5 GB in the beginning and 6.3 GB in the end (delta: 4.7 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 5.4 GB. Max. memory is 7.1 GB. [2018-07-24 12:59:25,142 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:59:25,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1153.27 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. [2018-07-24 12:59:25,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 171.69 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. [2018-07-24 12:59:25,144 INFO L168 Benchmark]: Boogie Preprocessor took 356.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -941.4 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:59:25,145 INFO L168 Benchmark]: RCFGBuilder took 5087.13 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: 285.4 MB). Peak memory consumption was 285.4 MB. Max. memory is 7.1 GB. [2018-07-24 12:59:25,146 INFO L168 Benchmark]: TraceAbstraction took 198666.41 ms. Allocated memory was 2.3 GB in the beginning and 6.3 GB in the end (delta: 3.9 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 5.2 GB. Max. memory is 7.1 GB. [2018-07-24 12:59:25,150 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 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 1153.27 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 171.69 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 356.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -941.4 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5087.13 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: 285.4 MB). Peak memory consumption was 285.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 198666.41 ms. Allocated memory was 2.3 GB in the beginning and 6.3 GB in the end (delta: 3.9 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 5.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1515]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1515). Cancelled while BasicCegarLoop was constructing difference of abstraction (418778states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (832290 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 198.5s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 113.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3790 SDtfs, 22654 SDslu, 5676 SDs, 0 SdLazy, 20307 SolverSat, 5847 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 41.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10013 GetRequests, 9776 SyntacticMatches, 36 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=506624occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 50.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 22104 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 7.1s SatisfiabilityAnalysisTime, 22.6s InterpolantComputationTime, 8879 NumberOfCodeBlocks, 8879 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 13741 ConstructedInterpolants, 0 QuantifiedInterpolants, 8919240 SizeOfPredicates, 28 NumberOfNonLiveVariables, 19433 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 46 InterpolantComputations, 10 PerfectInterpolantSequences, 8093/8497 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label58_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-59-25-168.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label58_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-59-25-168.csv Completed graceful shutdown