java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 15:01:09,759 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 15:01:09,761 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 15:01:09,773 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 15:01:09,773 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 15:01:09,774 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 15:01:09,775 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 15:01:09,777 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 15:01:09,779 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 15:01:09,779 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 15:01:09,780 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 15:01:09,781 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 15:01:09,782 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 15:01:09,782 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 15:01:09,784 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 15:01:09,785 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 15:01:09,786 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 15:01:09,788 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 15:01:09,790 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 15:01:09,791 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 15:01:09,792 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 15:01:09,794 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 15:01:09,796 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 15:01:09,797 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 15:01:09,797 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 15:01:09,798 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 15:01:09,799 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 15:01:09,800 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 15:01:09,801 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 15:01:09,802 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 15:01:09,802 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 15:01:09,803 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 15:01:09,803 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 15:01:09,803 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 15:01:09,804 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 15:01:09,805 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 15:01:09,806 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 15:01:09,822 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 15:01:09,823 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 15:01:09,824 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 15:01:09,824 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 15:01:09,824 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 15:01:09,824 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 15:01:09,824 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 15:01:09,825 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 15:01:09,825 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 15:01:09,825 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 15:01:09,825 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 15:01:09,826 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 15:01:09,826 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 15:01:09,826 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 15:01:09,827 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 15:01:09,827 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 15:01:09,827 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 15:01:09,827 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 15:01:09,827 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 15:01:09,828 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 15:01:09,828 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 15:01:09,828 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 15:01:09,828 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 15:01:09,829 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 15:01:09,829 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 15:01:09,829 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 15:01:09,829 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 15:01:09,829 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 15:01:09,830 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 15:01:09,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 15:01:09,830 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 15:01:09,830 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 15:01:09,830 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 15:01:09,877 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 15:01:09,897 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 15:01:09,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 15:01:09,905 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 15:01:09,906 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 15:01:09,906 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-07-24 15:01:10,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c426816b/62ad45e71ef1434680fe93a7f5efa2f1/FLAG6e72ea2b6 [2018-07-24 15:01:10,704 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 15:01:10,705 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-07-24 15:01:10,736 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c426816b/62ad45e71ef1434680fe93a7f5efa2f1/FLAG6e72ea2b6 [2018-07-24 15:01:10,758 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c426816b/62ad45e71ef1434680fe93a7f5efa2f1 [2018-07-24 15:01:10,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 15:01:10,773 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 15:01:10,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 15:01:10,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 15:01:10,788 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 15:01:10,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:01:10" (1/1) ... [2018-07-24 15:01:10,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec4a681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:10, skipping insertion in model container [2018-07-24 15:01:10,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:01:10" (1/1) ... [2018-07-24 15:01:11,113 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 15:01:11,949 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:01:11,969 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 15:01:12,540 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:01:12,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:12 WrapperNode [2018-07-24 15:01:12,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 15:01:12,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 15:01:12,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 15:01:12,681 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 15:01:12,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:12" (1/1) ... [2018-07-24 15:01:12,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:12" (1/1) ... [2018-07-24 15:01:12,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 15:01:12,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 15:01:12,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 15:01:12,881 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 15:01:13,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:12" (1/1) ... [2018-07-24 15:01:13,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:12" (1/1) ... [2018-07-24 15:01:13,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:12" (1/1) ... [2018-07-24 15:01:13,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:12" (1/1) ... [2018-07-24 15:01:13,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:12" (1/1) ... [2018-07-24 15:01:13,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:12" (1/1) ... [2018-07-24 15:01:13,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:12" (1/1) ... [2018-07-24 15:01:13,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 15:01:13,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 15:01:13,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 15:01:13,596 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 15:01:13,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 15:01:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 15:01:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 15:01:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 15:01:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 15:01:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 15:01:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 15:01:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 15:01:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 15:01:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 15:01:13,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 15:01:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 15:01:13,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 15:01:21,914 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 15:01:21,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:01:21 BoogieIcfgContainer [2018-07-24 15:01:21,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 15:01:21,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 15:01:21,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 15:01:21,920 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 15:01:21,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:01:10" (1/3) ... [2018-07-24 15:01:21,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108b34a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:01:21, skipping insertion in model container [2018-07-24 15:01:21,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:01:12" (2/3) ... [2018-07-24 15:01:21,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108b34a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:01:21, skipping insertion in model container [2018-07-24 15:01:21,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:01:21" (3/3) ... [2018-07-24 15:01:21,924 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label26_true-unreach-call.c [2018-07-24 15:01:21,934 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 15:01:21,943 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 15:01:22,007 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 15:01:22,008 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 15:01:22,008 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 15:01:22,008 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 15:01:22,008 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 15:01:22,009 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 15:01:22,009 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 15:01:22,009 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 15:01:22,009 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 15:01:22,054 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-24 15:01:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-24 15:01:22,065 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:22,067 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] [2018-07-24 15:01:22,067 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:01:22,073 INFO L82 PathProgramCache]: Analyzing trace with hash 892405449, now seen corresponding path program 1 times [2018-07-24 15:01:22,076 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:22,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:22,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:22,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:22,130 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:22,612 WARN L169 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:01:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:22,722 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:01:22,723 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 15:01:22,723 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:22,729 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:01:22,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:01:22,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:01:22,753 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-24 15:01:29,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:01:29,371 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-24 15:01:29,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:01:29,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-07-24 15:01:29,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:01:29,412 INFO L225 Difference]: With dead ends: 2251 [2018-07-24 15:01:29,412 INFO L226 Difference]: Without dead ends: 1474 [2018-07-24 15:01:29,425 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:01:29,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-24 15:01:29,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-24 15:01:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-24 15:01:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-07-24 15:01:29,588 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 69 [2018-07-24 15:01:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:01:29,589 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-07-24 15:01:29,589 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:01:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-07-24 15:01:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-24 15:01:29,600 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:29,601 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:01:29,601 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:01:29,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1034124894, now seen corresponding path program 1 times [2018-07-24 15:01:29,602 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:29,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:29,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:29,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:29,603 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:29,977 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:01:29,978 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:01:29,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:29,980 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:01:29,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:01:29,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:01:29,981 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-07-24 15:01:46,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:01:46,377 INFO L93 Difference]: Finished difference Result 5907 states and 11160 transitions. [2018-07-24 15:01:46,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 15:01:46,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-07-24 15:01:46,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:01:46,413 INFO L225 Difference]: With dead ends: 5907 [2018-07-24 15:01:46,414 INFO L226 Difference]: Without dead ends: 4439 [2018-07-24 15:01:46,430 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:01:46,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2018-07-24 15:01:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 4389. [2018-07-24 15:01:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4389 states. [2018-07-24 15:01:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 7149 transitions. [2018-07-24 15:01:46,589 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 7149 transitions. Word has length 141 [2018-07-24 15:01:46,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:01:46,590 INFO L471 AbstractCegarLoop]: Abstraction has 4389 states and 7149 transitions. [2018-07-24 15:01:46,590 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:01:46,590 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 7149 transitions. [2018-07-24 15:01:46,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-24 15:01:46,596 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:46,596 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:01:46,597 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:01:46,597 INFO L82 PathProgramCache]: Analyzing trace with hash 2134336357, now seen corresponding path program 1 times [2018-07-24 15:01:46,597 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:46,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:46,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:46,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:46,599 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:01:46,971 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:01:46,972 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:01:46,972 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:46,972 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:01:46,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:01:46,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:01:46,973 INFO L87 Difference]: Start difference. First operand 4389 states and 7149 transitions. Second operand 6 states. [2018-07-24 15:01:56,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:01:56,956 INFO L93 Difference]: Finished difference Result 17449 states and 29632 transitions. [2018-07-24 15:01:56,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:01:56,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-07-24 15:01:56,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:01:57,033 INFO L225 Difference]: With dead ends: 17449 [2018-07-24 15:01:57,033 INFO L226 Difference]: Without dead ends: 13066 [2018-07-24 15:01:57,065 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 15:01:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13066 states. [2018-07-24 15:01:57,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13066 to 12965. [2018-07-24 15:01:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12965 states. [2018-07-24 15:01:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12965 states to 12965 states and 20063 transitions. [2018-07-24 15:01:57,414 INFO L78 Accepts]: Start accepts. Automaton has 12965 states and 20063 transitions. Word has length 164 [2018-07-24 15:01:57,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:01:57,415 INFO L471 AbstractCegarLoop]: Abstraction has 12965 states and 20063 transitions. [2018-07-24 15:01:57,415 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:01:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 12965 states and 20063 transitions. [2018-07-24 15:01:57,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-24 15:01:57,425 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:01:57,425 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 15:01:57,425 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:01:57,425 INFO L82 PathProgramCache]: Analyzing trace with hash -336106029, now seen corresponding path program 1 times [2018-07-24 15:01:57,426 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:01:57,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:57,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:57,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:01:57,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:01:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:57,690 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:01:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 124 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:01:57,934 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:01:57,934 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:01:57,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:01:57,946 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:01:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:01:58,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:01:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 15:01:58,525 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:01:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 124 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:01:59,426 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:01:59,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 15:01:59,426 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:01:59,427 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:01:59,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:01:59,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:01:59,430 INFO L87 Difference]: Start difference. First operand 12965 states and 20063 transitions. Second operand 5 states. [2018-07-24 15:02:06,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:06,918 INFO L93 Difference]: Finished difference Result 34755 states and 57144 transitions. [2018-07-24 15:02:06,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:02:06,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2018-07-24 15:02:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:07,054 INFO L225 Difference]: With dead ends: 34755 [2018-07-24 15:02:07,054 INFO L226 Difference]: Without dead ends: 21796 [2018-07-24 15:02:07,106 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 453 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-07-24 15:02:07,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21796 states. [2018-07-24 15:02:07,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21796 to 21665. [2018-07-24 15:02:07,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21665 states. [2018-07-24 15:02:07,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21665 states to 21665 states and 30240 transitions. [2018-07-24 15:02:07,690 INFO L78 Accepts]: Start accepts. Automaton has 21665 states and 30240 transitions. Word has length 229 [2018-07-24 15:02:07,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:07,691 INFO L471 AbstractCegarLoop]: Abstraction has 21665 states and 30240 transitions. [2018-07-24 15:02:07,691 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:02:07,691 INFO L276 IsEmpty]: Start isEmpty. Operand 21665 states and 30240 transitions. [2018-07-24 15:02:07,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-07-24 15:02:07,704 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:07,705 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:02:07,705 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:02:07,705 INFO L82 PathProgramCache]: Analyzing trace with hash -506966937, now seen corresponding path program 1 times [2018-07-24 15:02:07,706 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:07,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:07,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:07,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:07,707 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 259 proven. 69 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 15:02:08,159 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:08,159 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:02:08,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:08,175 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:08,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 15:02:08,789 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 259 proven. 69 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 15:02:09,693 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:09,693 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:02:09,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:09,711 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:09,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 15:02:10,190 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 259 proven. 69 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (4)] Exception during sending of exit command (exit): Broken pipe [2018-07-24 15:02:10,621 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:02:10,622 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 11 [2018-07-24 15:02:10,622 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:02:10,625 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 15:02:10,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 15:02:10,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:02:10,626 INFO L87 Difference]: Start difference. First operand 21665 states and 30240 transitions. Second operand 8 states. [2018-07-24 15:02:21,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:21,595 INFO L93 Difference]: Finished difference Result 52046 states and 77158 transitions. [2018-07-24 15:02:21,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 15:02:21,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 352 [2018-07-24 15:02:21,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:21,712 INFO L225 Difference]: With dead ends: 52046 [2018-07-24 15:02:21,712 INFO L226 Difference]: Without dead ends: 30387 [2018-07-24 15:02:21,761 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1423 GetRequests, 1403 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-07-24 15:02:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30387 states. [2018-07-24 15:02:22,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30387 to 30365. [2018-07-24 15:02:22,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30365 states. [2018-07-24 15:02:22,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30365 states to 30365 states and 42875 transitions. [2018-07-24 15:02:22,391 INFO L78 Accepts]: Start accepts. Automaton has 30365 states and 42875 transitions. Word has length 352 [2018-07-24 15:02:22,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:22,392 INFO L471 AbstractCegarLoop]: Abstraction has 30365 states and 42875 transitions. [2018-07-24 15:02:22,392 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 15:02:22,392 INFO L276 IsEmpty]: Start isEmpty. Operand 30365 states and 42875 transitions. [2018-07-24 15:02:22,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-07-24 15:02:22,407 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:22,407 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:02:22,408 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:02:22,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1820443023, now seen corresponding path program 1 times [2018-07-24 15:02:22,408 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:22,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:22,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:22,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:22,409 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:22,809 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:02:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 124 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:02:23,366 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:23,366 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 15:02:23,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:23,383 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:23,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 15:02:24,002 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 124 proven. 90 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:02:24,618 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:02:24,619 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 15:02:24,619 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:02:24,620 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:02:24,620 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:02:24,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:02:24,629 INFO L87 Difference]: Start difference. First operand 30365 states and 42875 transitions. Second operand 5 states. [2018-07-24 15:02:30,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:30,540 INFO L93 Difference]: Finished difference Result 67520 states and 98325 transitions. [2018-07-24 15:02:30,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:02:30,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 399 [2018-07-24 15:02:30,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:30,684 INFO L225 Difference]: With dead ends: 67520 [2018-07-24 15:02:30,684 INFO L226 Difference]: Without dead ends: 37161 [2018-07-24 15:02:30,753 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 792 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 15:02:30,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37161 states. [2018-07-24 15:02:31,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37161 to 36899. [2018-07-24 15:02:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36899 states. [2018-07-24 15:02:31,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36899 states to 36899 states and 48983 transitions. [2018-07-24 15:02:31,455 INFO L78 Accepts]: Start accepts. Automaton has 36899 states and 48983 transitions. Word has length 399 [2018-07-24 15:02:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:31,455 INFO L471 AbstractCegarLoop]: Abstraction has 36899 states and 48983 transitions. [2018-07-24 15:02:31,455 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:02:31,456 INFO L276 IsEmpty]: Start isEmpty. Operand 36899 states and 48983 transitions. [2018-07-24 15:02:31,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-07-24 15:02:31,472 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:31,472 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:02:31,472 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:02:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1950495394, now seen corresponding path program 1 times [2018-07-24 15:02:31,473 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:31,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:31,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:31,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:31,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:31,854 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:02:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 119 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:02:32,771 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:32,771 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:02:32,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:32,781 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:32,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 15:02:33,011 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-07-24 15:02:33,136 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:02:33,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-07-24 15:02:33,137 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:02:33,137 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:02:33,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:02:33,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:02:33,138 INFO L87 Difference]: Start difference. First operand 36899 states and 48983 transitions. Second operand 3 states. [2018-07-24 15:02:37,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:37,530 INFO L93 Difference]: Finished difference Result 71728 states and 95730 transitions. [2018-07-24 15:02:37,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:02:37,536 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 416 [2018-07-24 15:02:37,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:37,621 INFO L225 Difference]: With dead ends: 71728 [2018-07-24 15:02:37,622 INFO L226 Difference]: Without dead ends: 34835 [2018-07-24 15:02:37,694 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 833 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:02:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34835 states. [2018-07-24 15:02:38,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34835 to 34126. [2018-07-24 15:02:38,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34126 states. [2018-07-24 15:02:38,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34126 states to 34126 states and 41706 transitions. [2018-07-24 15:02:38,208 INFO L78 Accepts]: Start accepts. Automaton has 34126 states and 41706 transitions. Word has length 416 [2018-07-24 15:02:38,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:38,209 INFO L471 AbstractCegarLoop]: Abstraction has 34126 states and 41706 transitions. [2018-07-24 15:02:38,209 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:02:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 34126 states and 41706 transitions. [2018-07-24 15:02:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-07-24 15:02:38,224 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:38,225 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:02:38,225 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:02:38,225 INFO L82 PathProgramCache]: Analyzing trace with hash 478327029, now seen corresponding path program 1 times [2018-07-24 15:02:38,225 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:38,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:38,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:38,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:38,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 15:02:38,890 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:02:38,890 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 15:02:38,890 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:02:38,891 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 15:02:38,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 15:02:38,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 15:02:38,892 INFO L87 Difference]: Start difference. First operand 34126 states and 41706 transitions. Second operand 4 states. [2018-07-24 15:02:47,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:47,277 INFO L93 Difference]: Finished difference Result 81749 states and 101693 transitions. [2018-07-24 15:02:47,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 15:02:47,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 450 [2018-07-24 15:02:47,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:47,399 INFO L225 Difference]: With dead ends: 81749 [2018-07-24 15:02:47,400 INFO L226 Difference]: Without dead ends: 47629 [2018-07-24 15:02:47,456 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 15:02:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47629 states. [2018-07-24 15:02:48,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47629 to 46220. [2018-07-24 15:02:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46220 states. [2018-07-24 15:02:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46220 states to 46220 states and 55659 transitions. [2018-07-24 15:02:48,108 INFO L78 Accepts]: Start accepts. Automaton has 46220 states and 55659 transitions. Word has length 450 [2018-07-24 15:02:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:48,109 INFO L471 AbstractCegarLoop]: Abstraction has 46220 states and 55659 transitions. [2018-07-24 15:02:48,110 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 15:02:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 46220 states and 55659 transitions. [2018-07-24 15:02:48,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2018-07-24 15:02:48,166 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:48,167 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:02:48,167 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:02:48,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1150640352, now seen corresponding path program 1 times [2018-07-24 15:02:48,167 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:48,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:48,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:48,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:48,169 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:49,175 WARN L169 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 15:02:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 71 proven. 452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:02:49,814 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:02:49,814 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:02:49,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:49,822 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:02:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:02:50,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:02:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 15:02:50,523 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:02:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-07-24 15:02:51,120 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 15:02:51,120 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [17] total 19 [2018-07-24 15:02:51,121 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:02:51,122 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:02:51,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:02:51,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2018-07-24 15:02:51,122 INFO L87 Difference]: Start difference. First operand 46220 states and 55659 transitions. Second operand 3 states. [2018-07-24 15:02:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:02:57,622 INFO L93 Difference]: Finished difference Result 107886 states and 130757 transitions. [2018-07-24 15:02:57,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:02:57,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 691 [2018-07-24 15:02:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:02:57,764 INFO L225 Difference]: With dead ends: 107886 [2018-07-24 15:02:57,764 INFO L226 Difference]: Without dead ends: 61672 [2018-07-24 15:02:57,845 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1402 GetRequests, 1383 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2018-07-24 15:02:57,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61672 states. [2018-07-24 15:02:58,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61672 to 60969. [2018-07-24 15:02:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60969 states. [2018-07-24 15:02:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60969 states to 60969 states and 72041 transitions. [2018-07-24 15:02:58,729 INFO L78 Accepts]: Start accepts. Automaton has 60969 states and 72041 transitions. Word has length 691 [2018-07-24 15:02:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:02:58,730 INFO L471 AbstractCegarLoop]: Abstraction has 60969 states and 72041 transitions. [2018-07-24 15:02:58,730 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:02:58,731 INFO L276 IsEmpty]: Start isEmpty. Operand 60969 states and 72041 transitions. [2018-07-24 15:02:58,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2018-07-24 15:02:58,813 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:02:58,814 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:02:58,814 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:02:58,815 INFO L82 PathProgramCache]: Analyzing trace with hash 736332360, now seen corresponding path program 1 times [2018-07-24 15:02:58,815 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:02:58,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:58,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:02:58,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:02:58,816 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:02:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 379 proven. 320 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-07-24 15:03:00,127 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:00,127 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 15:03:00,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:00,135 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:00,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 803 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2018-07-24 15:03:00,902 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 379 proven. 320 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-07-24 15:03:01,784 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:01,784 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:03:01,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:01,802 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:02,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 803 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2018-07-24 15:03:03,162 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:03,491 WARN L169 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-07-24 15:03:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 379 proven. 320 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-07-24 15:03:04,036 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:03:04,037 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 15:03:04,038 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:03:04,039 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:03:04,039 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:03:04,039 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 15:03:04,040 INFO L87 Difference]: Start difference. First operand 60969 states and 72041 transitions. Second operand 9 states. [2018-07-24 15:03:22,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:03:22,023 INFO L93 Difference]: Finished difference Result 158729 states and 196420 transitions. [2018-07-24 15:03:22,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 15:03:22,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 992 [2018-07-24 15:03:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:03:22,274 INFO L225 Difference]: With dead ends: 158729 [2018-07-24 15:03:22,274 INFO L226 Difference]: Without dead ends: 97766 [2018-07-24 15:03:22,385 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3990 GetRequests, 3967 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 15:03:22,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97766 states. [2018-07-24 15:03:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97766 to 96291. [2018-07-24 15:03:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96291 states. [2018-07-24 15:03:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96291 states to 96291 states and 115276 transitions. [2018-07-24 15:03:24,575 INFO L78 Accepts]: Start accepts. Automaton has 96291 states and 115276 transitions. Word has length 992 [2018-07-24 15:03:24,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:03:24,576 INFO L471 AbstractCegarLoop]: Abstraction has 96291 states and 115276 transitions. [2018-07-24 15:03:24,576 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 15:03:24,576 INFO L276 IsEmpty]: Start isEmpty. Operand 96291 states and 115276 transitions. [2018-07-24 15:03:24,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1114 [2018-07-24 15:03:24,737 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:03:24,738 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:03:24,738 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:03:24,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1853836206, now seen corresponding path program 1 times [2018-07-24 15:03:24,739 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:03:24,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:24,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:24,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:24,740 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:03:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 589 proven. 96 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-07-24 15:03:26,269 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:26,269 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:03:26,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:26,278 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:26,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 1079 proven. 2 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-07-24 15:03:27,951 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 589 proven. 96 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-07-24 15:03:29,060 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:29,060 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:03:29,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:29,077 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:29,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 1079 proven. 2 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-07-24 15:03:30,296 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 589 proven. 96 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2018-07-24 15:03:31,281 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:03:31,282 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 15:03:31,282 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:03:31,284 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:03:31,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:03:31,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 15:03:31,284 INFO L87 Difference]: Start difference. First operand 96291 states and 115276 transitions. Second operand 9 states. [2018-07-24 15:03:41,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:03:41,645 INFO L93 Difference]: Finished difference Result 193987 states and 231756 transitions. [2018-07-24 15:03:41,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 15:03:41,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1113 [2018-07-24 15:03:41,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:03:41,932 INFO L225 Difference]: With dead ends: 193987 [2018-07-24 15:03:41,932 INFO L226 Difference]: Without dead ends: 97702 [2018-07-24 15:03:42,119 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4470 GetRequests, 4449 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 15:03:42,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97702 states. [2018-07-24 15:03:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97702 to 97348. [2018-07-24 15:03:43,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97348 states. [2018-07-24 15:03:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97348 states to 97348 states and 111291 transitions. [2018-07-24 15:03:43,485 INFO L78 Accepts]: Start accepts. Automaton has 97348 states and 111291 transitions. Word has length 1113 [2018-07-24 15:03:43,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:03:43,486 INFO L471 AbstractCegarLoop]: Abstraction has 97348 states and 111291 transitions. [2018-07-24 15:03:43,486 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 15:03:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 97348 states and 111291 transitions. [2018-07-24 15:03:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1215 [2018-07-24 15:03:43,601 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:03:43,603 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:03:43,603 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:03:43,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1391320876, now seen corresponding path program 1 times [2018-07-24 15:03:43,603 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:03:43,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:43,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:43,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:03:43,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:03:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:44,554 WARN L169 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-07-24 15:03:46,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 376 proven. 456 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2018-07-24 15:03:46,290 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:46,291 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 15:03:46,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:46,299 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:46,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1081 proven. 2 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-07-24 15:03:47,912 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 485 proven. 115 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2018-07-24 15:03:48,677 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:03:48,678 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:03:48,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:03:48,693 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:03:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:03:49,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:03:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 1081 proven. 2 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-07-24 15:03:50,206 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:03:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 485 proven. 115 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2018-07-24 15:03:50,867 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:03:50,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 15 [2018-07-24 15:03:50,868 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:03:50,869 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 15:03:50,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 15:03:50,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-07-24 15:03:50,871 INFO L87 Difference]: Start difference. First operand 97348 states and 111291 transitions. Second operand 13 states. [2018-07-24 15:04:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:04:09,149 INFO L93 Difference]: Finished difference Result 247920 states and 286269 transitions. [2018-07-24 15:04:09,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-07-24 15:04:09,149 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1214 [2018-07-24 15:04:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:04:09,495 INFO L225 Difference]: With dead ends: 247920 [2018-07-24 15:04:09,495 INFO L226 Difference]: Without dead ends: 128973 [2018-07-24 15:04:09,653 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4929 GetRequests, 4880 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=513, Invalid=1649, Unknown=0, NotChecked=0, Total=2162 [2018-07-24 15:04:09,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128973 states. [2018-07-24 15:04:11,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128973 to 126729. [2018-07-24 15:04:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126729 states. [2018-07-24 15:04:11,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126729 states to 126729 states and 141383 transitions. [2018-07-24 15:04:11,341 INFO L78 Accepts]: Start accepts. Automaton has 126729 states and 141383 transitions. Word has length 1214 [2018-07-24 15:04:11,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:04:11,342 INFO L471 AbstractCegarLoop]: Abstraction has 126729 states and 141383 transitions. [2018-07-24 15:04:11,342 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 15:04:11,342 INFO L276 IsEmpty]: Start isEmpty. Operand 126729 states and 141383 transitions. [2018-07-24 15:04:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1371 [2018-07-24 15:04:11,449 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:04:11,449 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:04:11,450 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:04:11,450 INFO L82 PathProgramCache]: Analyzing trace with hash 687426872, now seen corresponding path program 1 times [2018-07-24 15:04:11,450 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:04:11,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:11,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:11,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:11,451 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:04:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:11,896 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 15:04:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 488 proven. 700 refuted. 0 times theorem prover too weak. 1091 trivial. 0 not checked. [2018-07-24 15:04:14,740 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:04:14,740 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:04:14,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:14,748 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:04:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:15,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:04:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 1327 proven. 2 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2018-07-24 15:04:16,643 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:04:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 488 proven. 717 refuted. 0 times theorem prover too weak. 1074 trivial. 0 not checked. [2018-07-24 15:04:18,131 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:04:18,131 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 15:04:18,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:18,147 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:04:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:19,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:04:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 1327 proven. 2 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2018-07-24 15:04:19,843 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:04:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 488 proven. 717 refuted. 0 times theorem prover too weak. 1074 trivial. 0 not checked. [2018-07-24 15:04:21,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:04:21,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 25 [2018-07-24 15:04:21,020 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:04:21,021 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 15:04:21,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 15:04:21,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2018-07-24 15:04:21,022 INFO L87 Difference]: Start difference. First operand 126729 states and 141383 transitions. Second operand 16 states. [2018-07-24 15:04:23,894 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 18 [2018-07-24 15:04:46,103 WARN L169 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2018-07-24 15:04:46,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:04:46,318 INFO L93 Difference]: Finished difference Result 237756 states and 265456 transitions. [2018-07-24 15:04:46,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-07-24 15:04:46,319 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1370 [2018-07-24 15:04:46,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:04:46,487 INFO L225 Difference]: With dead ends: 237756 [2018-07-24 15:04:46,487 INFO L226 Difference]: Without dead ends: 97172 [2018-07-24 15:04:46,572 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5564 GetRequests, 5501 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=893, Invalid=3267, Unknown=0, NotChecked=0, Total=4160 [2018-07-24 15:04:46,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97172 states. [2018-07-24 15:04:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97172 to 91517. [2018-07-24 15:04:47,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91517 states. [2018-07-24 15:04:47,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91517 states to 91517 states and 96709 transitions. [2018-07-24 15:04:47,520 INFO L78 Accepts]: Start accepts. Automaton has 91517 states and 96709 transitions. Word has length 1370 [2018-07-24 15:04:47,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:04:47,520 INFO L471 AbstractCegarLoop]: Abstraction has 91517 states and 96709 transitions. [2018-07-24 15:04:47,520 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 15:04:47,520 INFO L276 IsEmpty]: Start isEmpty. Operand 91517 states and 96709 transitions. [2018-07-24 15:04:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1461 [2018-07-24 15:04:47,595 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:04:47,595 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:04:47,596 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:04:47,596 INFO L82 PathProgramCache]: Analyzing trace with hash -561517740, now seen corresponding path program 1 times [2018-07-24 15:04:47,596 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:04:47,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:47,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:47,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:04:47,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:04:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2350 backedges. 668 proven. 932 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2018-07-24 15:04:51,526 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:04:51,526 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:04:51,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:04:51,537 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:04:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:04:51,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:04:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2350 backedges. 596 proven. 0 refuted. 0 times theorem prover too weak. 1754 trivial. 0 not checked. [2018-07-24 15:04:53,141 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:04:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2350 backedges. 372 proven. 514 refuted. 0 times theorem prover too weak. 1464 trivial. 0 not checked. [2018-07-24 15:04:55,124 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:04:55,125 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 5] total 20 [2018-07-24 15:04:55,125 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:04:55,126 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:04:55,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:04:55,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-07-24 15:04:55,127 INFO L87 Difference]: Start difference. First operand 91517 states and 96709 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 15:04:55,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 15:04:55,371 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 15:04:55,378 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 15:04:55,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:04:55 BoogieIcfgContainer [2018-07-24 15:04:55,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 15:04:55,381 INFO L168 Benchmark]: Toolchain (without parser) took 224608.71 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 15:04:55,382 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 15:04:55,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1905.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-07-24 15:04:55,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 199.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 15:04:55,386 INFO L168 Benchmark]: Boogie Preprocessor took 714.35 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-07-24 15:04:55,387 INFO L168 Benchmark]: RCFGBuilder took 8319.88 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 539.2 MB). Peak memory consumption was 539.2 MB. Max. memory is 7.1 GB. [2018-07-24 15:04:55,388 INFO L168 Benchmark]: TraceAbstraction took 213462.56 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -705.3 MB). Peak memory consumption was 563.4 MB. Max. memory is 7.1 GB. [2018-07-24 15:04:55,399 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1905.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 199.74 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 714.35 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8319.88 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 539.2 MB). Peak memory consumption was 539.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213462.56 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -705.3 MB). Peak memory consumption was 563.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 195]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 195). Cancelled while BasicCegarLoop was constructing difference of abstraction (91517states) and interpolant automaton (currently 5 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (89 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 213.3s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 151.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4521 SDtfs, 46444 SDslu, 2880 SDs, 0 SdLazy, 98696 SolverSat, 21654 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 116.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26865 GetRequests, 26588 SyntacticMatches, 35 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2089 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126729occurred 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: 10.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 13115 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 5.6s SatisfiabilityAnalysisTime, 33.4s InterpolantComputationTime, 22337 NumberOfCodeBlocks, 22337 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 35570 ConstructedInterpolants, 68 QuantifiedInterpolants, 87544251 SizeOfPredicates, 12 NumberOfNonLiveVariables, 17624 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 44 InterpolantComputations, 11 PerfectInterpolantSequences, 36505/43136 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label26_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-04-55-420.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label26_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_15-04-55-420.csv Completed graceful shutdown