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/Problem13_label44_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:59:41,712 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:59:41,714 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:59:41,726 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:59:41,727 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:59:41,728 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:59:41,729 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:59:41,731 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:59:41,733 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:59:41,733 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:59:41,734 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:59:41,735 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:59:41,736 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:59:41,737 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:59:41,738 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:59:41,738 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:59:41,739 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:59:41,741 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:59:41,743 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:59:41,745 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:59:41,746 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:59:41,748 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:59:41,750 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:59:41,750 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:59:41,751 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:59:41,752 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:59:41,753 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:59:41,753 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:59:41,754 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:59:41,756 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:59:41,756 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:59:41,757 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:59:41,757 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:59:41,757 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:59:41,758 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:59:41,760 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:59:41,760 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 11:59:41,780 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:59:41,780 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:59:41,781 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:59:41,781 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:59:41,781 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:59:41,782 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:59:41,782 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:59:41,782 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:59:41,782 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:59:41,782 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:59:41,782 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:59:41,783 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:59:41,783 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:59:41,784 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:59:41,784 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:59:41,784 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:59:41,784 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:59:41,784 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:59:41,785 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:59:41,785 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:59:41,785 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:59:41,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:59:41,785 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:59:41,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:59:41,786 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:59:41,786 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:59:41,786 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:59:41,786 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:59:41,787 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:59:41,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:59:41,787 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:59:41,787 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:59:41,787 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:59:41,849 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:59:41,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:59:41,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:59:41,870 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:59:41,870 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:59:41,871 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c [2018-07-24 11:59:42,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e286b7b/8e2ecd6829b143fb9c0baf1c7a9490f6/FLAG4479f4e8f [2018-07-24 11:59:42,678 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:59:42,679 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c [2018-07-24 11:59:42,738 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e286b7b/8e2ecd6829b143fb9c0baf1c7a9490f6/FLAG4479f4e8f [2018-07-24 11:59:42,760 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2e286b7b/8e2ecd6829b143fb9c0baf1c7a9490f6 [2018-07-24 11:59:42,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:59:42,779 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:59:42,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:59:42,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:59:42,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:59:42,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:59:42" (1/1) ... [2018-07-24 11:59:42,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa64c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:42, skipping insertion in model container [2018-07-24 11:59:42,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:59:42" (1/1) ... [2018-07-24 11:59:43,218 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:59:44,295 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:59:44,314 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:59:45,112 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:59:45,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:45 WrapperNode [2018-07-24 11:59:45,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:59:45,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:59:45,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:59:45,538 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:59:45,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:45" (1/1) ... [2018-07-24 11:59:45,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:45" (1/1) ... [2018-07-24 11:59:45,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:59:45,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:59:45,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:59:45,839 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:59:46,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:45" (1/1) ... [2018-07-24 11:59:46,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:45" (1/1) ... [2018-07-24 11:59:46,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:45" (1/1) ... [2018-07-24 11:59:46,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:45" (1/1) ... [2018-07-24 11:59:46,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:45" (1/1) ... [2018-07-24 11:59:46,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:45" (1/1) ... [2018-07-24 11:59:47,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:45" (1/1) ... [2018-07-24 11:59:47,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:59:47,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:59:47,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:59:47,088 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:59:47,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:45" (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 11:59:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:59:47,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:59:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:59:47,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:59:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:59:47,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:59:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:59:47,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:59:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:59:47,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:59:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:59:47,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:59:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:59:47,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:00:02,185 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:00:02,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:00:02 BoogieIcfgContainer [2018-07-24 12:00:02,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:00:02,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:00:02,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:00:02,190 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:00:02,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:59:42" (1/3) ... [2018-07-24 12:00:02,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bad478e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:00:02, skipping insertion in model container [2018-07-24 12:00:02,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:59:45" (2/3) ... [2018-07-24 12:00:02,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bad478e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:00:02, skipping insertion in model container [2018-07-24 12:00:02,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:00:02" (3/3) ... [2018-07-24 12:00:02,194 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label44_false-unreach-call.c [2018-07-24 12:00:02,205 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:00:02,214 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:00:02,278 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:00:02,279 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:00:02,279 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:00:02,280 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:00:02,280 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:00:02,280 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:00:02,280 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:00:02,280 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:00:02,280 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:00:02,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 12:00:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-07-24 12:00:02,328 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:00:02,329 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] [2018-07-24 12:00:02,329 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:00:02,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1049265373, now seen corresponding path program 1 times [2018-07-24 12:00:02,338 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:00:02,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:02,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:00:02,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:02,386 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:00:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:00:02,838 WARN L169 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:00:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:00:02,943 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:00:02,944 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:00:02,944 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:00:02,952 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:00:02,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:00:02,968 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:00:02,971 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-07-24 12:00:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:00:12,154 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-07-24 12:00:12,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:00:12,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-07-24 12:00:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:00:12,192 INFO L225 Difference]: With dead ends: 3097 [2018-07-24 12:00:12,192 INFO L226 Difference]: Without dead ends: 1975 [2018-07-24 12:00:12,203 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 12:00:12,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-07-24 12:00:12,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-07-24 12:00:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-07-24 12:00:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-07-24 12:00:12,362 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 37 [2018-07-24 12:00:12,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:00:12,363 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-07-24 12:00:12,363 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:00:12,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-07-24 12:00:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-24 12:00:12,373 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:00:12,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:00:12,374 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:00:12,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1254577458, now seen corresponding path program 1 times [2018-07-24 12:00:12,375 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:00:12,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:12,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:00:12,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:12,377 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:00:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:00:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:00:12,648 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:00:12,648 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:00:12,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:00:12,650 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:00:12,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:00:12,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:00:12,651 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-07-24 12:00:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:00:34,242 INFO L93 Difference]: Finished difference Result 5737 states and 9691 transitions. [2018-07-24 12:00:34,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:00:34,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2018-07-24 12:00:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:00:34,273 INFO L225 Difference]: With dead ends: 5737 [2018-07-24 12:00:34,273 INFO L226 Difference]: Without dead ends: 3769 [2018-07-24 12:00:34,280 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:00:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2018-07-24 12:00:34,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3685. [2018-07-24 12:00:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3685 states. [2018-07-24 12:00:34,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 5659 transitions. [2018-07-24 12:00:34,413 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 5659 transitions. Word has length 113 [2018-07-24 12:00:34,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:00:34,414 INFO L471 AbstractCegarLoop]: Abstraction has 3685 states and 5659 transitions. [2018-07-24 12:00:34,414 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:00:34,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 5659 transitions. [2018-07-24 12:00:34,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-24 12:00:34,430 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:00:34,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:00:34,431 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:00:34,431 INFO L82 PathProgramCache]: Analyzing trace with hash 442498702, now seen corresponding path program 1 times [2018-07-24 12:00:34,431 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:00:34,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:34,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:00:34,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:34,434 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:00:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:00:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:00:34,760 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:00:34,760 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:00:34,760 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:00:34,761 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:00:34,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:00:34,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:00:34,762 INFO L87 Difference]: Start difference. First operand 3685 states and 5659 transitions. Second operand 6 states. [2018-07-24 12:00:45,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:00:45,554 INFO L93 Difference]: Finished difference Result 10870 states and 17247 transitions. [2018-07-24 12:00:45,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:00:45,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-07-24 12:00:45,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:00:45,601 INFO L225 Difference]: With dead ends: 10870 [2018-07-24 12:00:45,601 INFO L226 Difference]: Without dead ends: 7191 [2018-07-24 12:00:45,617 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:00:45,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7191 states. [2018-07-24 12:00:45,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7191 to 7142. [2018-07-24 12:00:45,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7142 states. [2018-07-24 12:00:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7142 states to 7142 states and 10338 transitions. [2018-07-24 12:00:45,821 INFO L78 Accepts]: Start accepts. Automaton has 7142 states and 10338 transitions. Word has length 127 [2018-07-24 12:00:45,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:00:45,822 INFO L471 AbstractCegarLoop]: Abstraction has 7142 states and 10338 transitions. [2018-07-24 12:00:45,822 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:00:45,822 INFO L276 IsEmpty]: Start isEmpty. Operand 7142 states and 10338 transitions. [2018-07-24 12:00:45,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-24 12:00:45,830 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:00:45,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:00:45,831 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:00:45,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1110938450, now seen corresponding path program 1 times [2018-07-24 12:00:45,831 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:00:45,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:45,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:00:45,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:45,834 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:00:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:00:46,181 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:00:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:00:46,382 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:00:46,382 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:00:46,383 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:00:46,383 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:00:46,383 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:00:46,383 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:00:46,384 INFO L87 Difference]: Start difference. First operand 7142 states and 10338 transitions. Second operand 6 states. [2018-07-24 12:00:59,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:00:59,592 INFO L93 Difference]: Finished difference Result 24010 states and 36803 transitions. [2018-07-24 12:00:59,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:00:59,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-07-24 12:00:59,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:00:59,672 INFO L225 Difference]: With dead ends: 24010 [2018-07-24 12:00:59,672 INFO L226 Difference]: Without dead ends: 16874 [2018-07-24 12:00:59,714 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:00:59,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16874 states. [2018-07-24 12:01:00,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16874 to 16667. [2018-07-24 12:01:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16667 states. [2018-07-24 12:01:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16667 states to 16667 states and 23881 transitions. [2018-07-24 12:01:00,110 INFO L78 Accepts]: Start accepts. Automaton has 16667 states and 23881 transitions. Word has length 143 [2018-07-24 12:01:00,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:01:00,111 INFO L471 AbstractCegarLoop]: Abstraction has 16667 states and 23881 transitions. [2018-07-24 12:01:00,111 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:01:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 16667 states and 23881 transitions. [2018-07-24 12:01:00,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-24 12:01:00,117 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:01:00,117 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:01:00,118 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:01:00,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1957306683, now seen corresponding path program 1 times [2018-07-24 12:01:00,118 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:01:00,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:00,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:00,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:00,119 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:01:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 60 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:01:00,338 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:01:00,338 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:01:00,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:00,348 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:01:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:00,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:01:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-24 12:01:00,856 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:01:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 60 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:01:01,577 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:01:01,578 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 12:01:01,578 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:01:01,578 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:01:01,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:01:01,579 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:01:01,579 INFO L87 Difference]: Start difference. First operand 16667 states and 23881 transitions. Second operand 5 states. [2018-07-24 12:01:15,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:01:15,811 INFO L93 Difference]: Finished difference Result 42947 states and 64414 transitions. [2018-07-24 12:01:15,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:01:15,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2018-07-24 12:01:15,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:01:15,944 INFO L225 Difference]: With dead ends: 42947 [2018-07-24 12:01:15,945 INFO L226 Difference]: Without dead ends: 26286 [2018-07-24 12:01:16,035 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:01:16,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26286 states. [2018-07-24 12:01:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26286 to 26178. [2018-07-24 12:01:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26178 states. [2018-07-24 12:01:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26178 states to 26178 states and 36793 transitions. [2018-07-24 12:01:16,789 INFO L78 Accepts]: Start accepts. Automaton has 26178 states and 36793 transitions. Word has length 191 [2018-07-24 12:01:16,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:01:16,790 INFO L471 AbstractCegarLoop]: Abstraction has 26178 states and 36793 transitions. [2018-07-24 12:01:16,790 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:01:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 26178 states and 36793 transitions. [2018-07-24 12:01:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-24 12:01:16,806 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:01:16,806 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:01:16,807 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:01:16,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1890487304, now seen corresponding path program 1 times [2018-07-24 12:01:16,807 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:01:16,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:16,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:16,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:16,808 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:01:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:17,519 WARN L169 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-07-24 12:01:17,872 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 12:01:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 90 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 12:01:18,198 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:01:18,198 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 12:01:18,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:18,215 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:01:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:18,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:01:19,298 WARN L169 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2018-07-24 12:01:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-07-24 12:01:19,398 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:01:20,422 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 90 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 12:01:20,444 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:01:20,444 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:01:20,444 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:01:20,445 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:01:20,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:01:20,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:01:20,446 INFO L87 Difference]: Start difference. First operand 26178 states and 36793 transitions. Second operand 5 states. [2018-07-24 12:01:43,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:01:43,385 INFO L93 Difference]: Finished difference Result 56498 states and 81326 transitions. [2018-07-24 12:01:43,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:01:43,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2018-07-24 12:01:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:01:43,481 INFO L225 Difference]: With dead ends: 56498 [2018-07-24 12:01:43,481 INFO L226 Difference]: Without dead ends: 30326 [2018-07-24 12:01:43,542 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 565 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:01:43,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30326 states. [2018-07-24 12:01:44,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30326 to 29608. [2018-07-24 12:01:44,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29608 states. [2018-07-24 12:01:44,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29608 states to 29608 states and 41557 transitions. [2018-07-24 12:01:44,259 INFO L78 Accepts]: Start accepts. Automaton has 29608 states and 41557 transitions. Word has length 285 [2018-07-24 12:01:44,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:01:44,259 INFO L471 AbstractCegarLoop]: Abstraction has 29608 states and 41557 transitions. [2018-07-24 12:01:44,259 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:01:44,259 INFO L276 IsEmpty]: Start isEmpty. Operand 29608 states and 41557 transitions. [2018-07-24 12:01:44,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-24 12:01:44,275 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:01:44,276 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:01:44,276 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:01:44,276 INFO L82 PathProgramCache]: Analyzing trace with hash 692987834, now seen corresponding path program 1 times [2018-07-24 12:01:44,276 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:01:44,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:44,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:44,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:44,278 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:01:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 171 proven. 75 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 12:01:44,703 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:01:44,703 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:01:44,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:44,711 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:01:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:44,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:01:45,103 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-07-24 12:01:45,103 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:01:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 100 proven. 215 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:01:46,030 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:01:46,031 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:01:46,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:46,047 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:01:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:46,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:01:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 287 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-07-24 12:01:46,482 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:01:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 171 proven. 75 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 12:01:46,765 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:01:46,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 5, 5] total 18 [2018-07-24 12:01:46,766 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:01:46,767 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 12:01:46,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 12:01:46,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:01:46,768 INFO L87 Difference]: Start difference. First operand 29608 states and 41557 transitions. Second operand 11 states. [2018-07-24 12:03:20,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:03:20,742 INFO L93 Difference]: Finished difference Result 141184 states and 364485 transitions. [2018-07-24 12:03:20,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-24 12:03:20,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 292 [2018-07-24 12:03:20,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:03:21,886 INFO L225 Difference]: With dead ends: 141184 [2018-07-24 12:03:21,886 INFO L226 Difference]: Without dead ends: 112387 [2018-07-24 12:03:23,288 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1386 GetRequests, 1259 SyntacticMatches, 5 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5768 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2594, Invalid=12658, Unknown=0, NotChecked=0, Total=15252 [2018-07-24 12:03:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112387 states. [2018-07-24 12:03:26,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112387 to 108498. [2018-07-24 12:03:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108498 states. [2018-07-24 12:03:27,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108498 states to 108498 states and 162002 transitions. [2018-07-24 12:03:27,968 INFO L78 Accepts]: Start accepts. Automaton has 108498 states and 162002 transitions. Word has length 292 [2018-07-24 12:03:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:03:27,969 INFO L471 AbstractCegarLoop]: Abstraction has 108498 states and 162002 transitions. [2018-07-24 12:03:27,969 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 12:03:27,969 INFO L276 IsEmpty]: Start isEmpty. Operand 108498 states and 162002 transitions. [2018-07-24 12:03:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-07-24 12:03:27,994 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:03:27,995 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:03:27,995 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:03:27,996 INFO L82 PathProgramCache]: Analyzing trace with hash 453230303, now seen corresponding path program 1 times [2018-07-24 12:03:27,996 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:03:27,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:27,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:27,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:27,997 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:03:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 61 proven. 23 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 12:03:28,456 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:03:28,457 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 12:03:28,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:28,465 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:03:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:28,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:03:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:03:28,740 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:03:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:03:28,937 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:03:28,938 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:03:28,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:28,955 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:03:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:29,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:03:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 12:03:29,388 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:03:29,764 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 12:03:29,767 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 12:03:29,767 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-07-24 12:03:29,767 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:03:29,768 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:03:29,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:03:29,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:03:29,768 INFO L87 Difference]: Start difference. First operand 108498 states and 162002 transitions. Second operand 5 states. [2018-07-24 12:03:41,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:03:41,701 INFO L93 Difference]: Finished difference Result 229504 states and 349025 transitions. [2018-07-24 12:03:41,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:03:41,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 343 [2018-07-24 12:03:41,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:03:42,121 INFO L225 Difference]: With dead ends: 229504 [2018-07-24 12:03:42,121 INFO L226 Difference]: Without dead ends: 122049 [2018-07-24 12:03:42,403 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1380 GetRequests, 1359 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:03:42,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122049 states. Received shutdown request... [2018-07-24 12:03:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122049 to 120910. [2018-07-24 12:03:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120910 states. [2018-07-24 12:03:45,290 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:03:45,297 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:03:45,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:03:45 BoogieIcfgContainer [2018-07-24 12:03:45,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:03:45,298 INFO L168 Benchmark]: Toolchain (without parser) took 242522.75 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -390.5 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-07-24 12:03:45,299 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:03:45,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2756.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-07-24 12:03:45,301 INFO L168 Benchmark]: Boogie Procedure Inliner took 301.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:03:45,301 INFO L168 Benchmark]: Boogie Preprocessor took 1248.84 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 990.4 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:03:45,302 INFO L168 Benchmark]: RCFGBuilder took 15098.03 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 156.8 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 90.3 MB). Peak memory consumption was 752.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:03:45,303 INFO L168 Benchmark]: TraceAbstraction took 223110.54 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 973.1 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 441.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-07-24 12:03:45,309 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2756.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 301.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1248.84 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 990.4 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15098.03 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 156.8 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 90.3 MB). Peak memory consumption was 752.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223110.54 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 973.1 MB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 441.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 102). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 223.0s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 201.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4126 SDtfs, 36515 SDslu, 6690 SDs, 0 SdLazy, 84018 SolverSat, 17611 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 168.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3768 GetRequests, 3570 SyntacticMatches, 22 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5898 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108498occurred in iteration=7, 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: 9.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 5056 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 3277 NumberOfCodeBlocks, 3277 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5003 ConstructedInterpolants, 111 QuantifiedInterpolants, 6081579 SizeOfPredicates, 8 NumberOfNonLiveVariables, 3198 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 3180/4008 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/Problem13_label44_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-03-45-323.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label44_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-03-45-323.csv Completed graceful shutdown