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/Problem12_label42_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:52:35,772 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:52:35,774 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:52:35,792 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:52:35,792 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:52:35,796 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:52:35,797 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:52:35,800 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:52:35,801 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:52:35,802 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:52:35,804 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:52:35,804 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:52:35,805 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:52:35,806 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:52:35,814 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:52:35,816 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:52:35,818 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:52:35,820 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:52:35,825 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:52:35,829 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:52:35,830 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:52:35,832 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:52:35,837 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:52:35,838 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:52:35,838 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:52:35,839 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:52:35,841 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:52:35,842 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:52:35,844 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:52:35,846 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:52:35,846 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:52:35,847 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:52:35,847 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:52:35,847 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:52:35,848 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:52:35,849 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:52:35,849 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 11:52:35,880 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:52:35,880 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:52:35,881 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:52:35,881 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:52:35,881 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:52:35,882 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:52:35,882 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:52:35,882 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:52:35,885 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:52:35,885 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:52:35,886 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:52:35,887 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:52:35,887 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:52:35,887 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:52:35,888 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:52:35,888 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:52:35,888 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:52:35,889 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:52:35,889 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:52:35,889 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:52:35,890 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:52:35,891 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:52:35,891 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:52:35,891 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:52:35,891 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:52:35,892 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:52:35,892 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:52:35,892 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:52:35,892 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:52:35,892 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:52:35,892 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:52:35,893 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:52:35,893 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:52:35,947 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:52:35,969 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:52:35,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:52:35,978 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:52:35,979 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:52:35,979 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label42_false-unreach-call.c [2018-07-24 11:52:36,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3cbb317/089a3296600041c28eb653d501408d28/FLAG5c68babe8 [2018-07-24 11:52:36,766 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:52:36,767 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label42_false-unreach-call.c [2018-07-24 11:52:36,804 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3cbb317/089a3296600041c28eb653d501408d28/FLAG5c68babe8 [2018-07-24 11:52:36,822 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f3cbb317/089a3296600041c28eb653d501408d28 [2018-07-24 11:52:36,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:52:36,836 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:52:36,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:52:36,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:52:36,845 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:52:36,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:52:36" (1/1) ... [2018-07-24 11:52:36,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3fd0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:36, skipping insertion in model container [2018-07-24 11:52:36,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:52:36" (1/1) ... [2018-07-24 11:52:37,182 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:52:38,331 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:52:38,348 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:52:39,336 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:52:39,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:39 WrapperNode [2018-07-24 11:52:39,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:52:39,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:52:39,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:52:39,580 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:52:39,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:39" (1/1) ... [2018-07-24 11:52:39,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:39" (1/1) ... [2018-07-24 11:52:39,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:52:39,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:52:39,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:52:39,813 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:52:40,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:39" (1/1) ... [2018-07-24 11:52:40,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:39" (1/1) ... [2018-07-24 11:52:40,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:39" (1/1) ... [2018-07-24 11:52:40,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:39" (1/1) ... [2018-07-24 11:52:40,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:39" (1/1) ... [2018-07-24 11:52:40,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:39" (1/1) ... [2018-07-24 11:52:40,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:39" (1/1) ... [2018-07-24 11:52:40,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:52:40,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:52:40,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:52:40,655 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:52:40,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:39" (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 11:52:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:52:40,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:52:40,730 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 11:52:40,730 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 11:52:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:52:40,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:52:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:52:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:52:40,731 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 11:52:40,732 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 11:52:40,732 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 11:52:40,732 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 11:52:40,732 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 11:52:40,732 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 11:52:50,313 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:52:50,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:52:50 BoogieIcfgContainer [2018-07-24 11:52:50,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:52:50,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:52:50,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:52:50,318 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:52:50,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:52:36" (1/3) ... [2018-07-24 11:52:50,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de96b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:52:50, skipping insertion in model container [2018-07-24 11:52:50,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:52:39" (2/3) ... [2018-07-24 11:52:50,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de96b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:52:50, skipping insertion in model container [2018-07-24 11:52:50,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:52:50" (3/3) ... [2018-07-24 11:52:50,322 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label42_false-unreach-call.c [2018-07-24 11:52:50,331 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:52:50,345 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:52:50,412 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:52:50,413 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:52:50,413 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:52:50,414 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:52:50,414 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:52:50,414 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:52:50,414 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:52:50,414 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:52:50,414 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:52:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 11:52:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-24 11:52:50,466 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:52:50,467 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] [2018-07-24 11:52:50,468 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 11:52:50,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1002667813, now seen corresponding path program 1 times [2018-07-24 11:52:50,475 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:52:50,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:50,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:52:50,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:50,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:52:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:52:50,861 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 11:52:50,863 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:52:50,863 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 11:52:50,863 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:52:50,869 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 11:52:50,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 11:52:50,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:52:50,886 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-07-24 11:53:03,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:53:03,348 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-07-24 11:53:03,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 11:53:03,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-07-24 11:53:03,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:53:03,394 INFO L225 Difference]: With dead ends: 3234 [2018-07-24 11:53:03,394 INFO L226 Difference]: Without dead ends: 2388 [2018-07-24 11:53:03,405 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:53:03,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-07-24 11:53:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-07-24 11:53:03,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-07-24 11:53:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3845 transitions. [2018-07-24 11:53:03,580 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3845 transitions. Word has length 33 [2018-07-24 11:53:03,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:53:03,582 INFO L471 AbstractCegarLoop]: Abstraction has 2388 states and 3845 transitions. [2018-07-24 11:53:03,582 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 11:53:03,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3845 transitions. [2018-07-24 11:53:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-24 11:53:03,592 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:53:03,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:03,595 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 11:53:03,595 INFO L82 PathProgramCache]: Analyzing trace with hash 144923481, now seen corresponding path program 1 times [2018-07-24 11:53:03,595 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:53:03,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:03,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:03,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:03,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:53:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:03,964 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:53:03,964 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:53:03,964 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:53:03,966 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:53:03,968 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:53:03,968 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:53:03,969 INFO L87 Difference]: Start difference. First operand 2388 states and 3845 transitions. Second operand 6 states. [2018-07-24 11:53:16,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:53:16,024 INFO L93 Difference]: Finished difference Result 7212 states and 11807 transitions. [2018-07-24 11:53:16,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:53:16,025 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-07-24 11:53:16,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:53:16,067 INFO L225 Difference]: With dead ends: 7212 [2018-07-24 11:53:16,067 INFO L226 Difference]: Without dead ends: 4830 [2018-07-24 11:53:16,075 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 11:53:16,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4830 states. [2018-07-24 11:53:16,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4830 to 4786. [2018-07-24 11:53:16,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4786 states. [2018-07-24 11:53:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4786 states to 4786 states and 7527 transitions. [2018-07-24 11:53:16,241 INFO L78 Accepts]: Start accepts. Automaton has 4786 states and 7527 transitions. Word has length 114 [2018-07-24 11:53:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:53:16,242 INFO L471 AbstractCegarLoop]: Abstraction has 4786 states and 7527 transitions. [2018-07-24 11:53:16,242 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:53:16,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4786 states and 7527 transitions. [2018-07-24 11:53:16,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-24 11:53:16,254 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:53:16,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:16,256 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 11:53:16,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1990399209, now seen corresponding path program 1 times [2018-07-24 11:53:16,256 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:53:16,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:16,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:16,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:16,258 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:53:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:16,563 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:53:16,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:53:16,564 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:53:16,564 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:53:16,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:53:16,565 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:53:16,565 INFO L87 Difference]: Start difference. First operand 4786 states and 7527 transitions. Second operand 6 states. [2018-07-24 11:53:26,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:53:26,912 INFO L93 Difference]: Finished difference Result 14263 states and 22567 transitions. [2018-07-24 11:53:26,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:53:26,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-07-24 11:53:26,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:53:26,963 INFO L225 Difference]: With dead ends: 14263 [2018-07-24 11:53:26,964 INFO L226 Difference]: Without dead ends: 9483 [2018-07-24 11:53:26,986 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 11:53:26,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9483 states. [2018-07-24 11:53:27,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9483 to 9441. [2018-07-24 11:53:27,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9441 states. [2018-07-24 11:53:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9441 states to 9441 states and 13321 transitions. [2018-07-24 11:53:27,223 INFO L78 Accepts]: Start accepts. Automaton has 9441 states and 13321 transitions. Word has length 122 [2018-07-24 11:53:27,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:53:27,223 INFO L471 AbstractCegarLoop]: Abstraction has 9441 states and 13321 transitions. [2018-07-24 11:53:27,226 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:53:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 9441 states and 13321 transitions. [2018-07-24 11:53:27,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-24 11:53:27,232 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:53:27,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:27,233 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 11:53:27,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2112626584, now seen corresponding path program 1 times [2018-07-24 11:53:27,233 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:53:27,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:27,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:27,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:27,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:53:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:27,532 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:53:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:27,955 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:53:27,955 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:53:27,955 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:53:27,956 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:53:27,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:53:27,956 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:53:27,956 INFO L87 Difference]: Start difference. First operand 9441 states and 13321 transitions. Second operand 6 states. [2018-07-24 11:53:40,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:53:40,231 INFO L93 Difference]: Finished difference Result 30768 states and 45349 transitions. [2018-07-24 11:53:40,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:53:40,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-07-24 11:53:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:53:40,331 INFO L225 Difference]: With dead ends: 30768 [2018-07-24 11:53:40,332 INFO L226 Difference]: Without dead ends: 21333 [2018-07-24 11:53:40,385 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:53:40,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21333 states. [2018-07-24 11:53:41,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21333 to 21225. [2018-07-24 11:53:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21225 states. [2018-07-24 11:53:41,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21225 states to 21225 states and 29209 transitions. [2018-07-24 11:53:41,093 INFO L78 Accepts]: Start accepts. Automaton has 21225 states and 29209 transitions. Word has length 133 [2018-07-24 11:53:41,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:53:41,094 INFO L471 AbstractCegarLoop]: Abstraction has 21225 states and 29209 transitions. [2018-07-24 11:53:41,094 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:53:41,094 INFO L276 IsEmpty]: Start isEmpty. Operand 21225 states and 29209 transitions. [2018-07-24 11:53:41,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-24 11:53:41,099 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:53:41,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:41,100 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 11:53:41,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1215617039, now seen corresponding path program 1 times [2018-07-24 11:53:41,100 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:53:41,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:41,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:41,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:41,102 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:53:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:41,401 WARN L169 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:53:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:41,828 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:53:41,828 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:53:41,828 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:53:41,829 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:53:41,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:53:41,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:53:41,830 INFO L87 Difference]: Start difference. First operand 21225 states and 29209 transitions. Second operand 6 states. [2018-07-24 11:53:53,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:53:53,493 INFO L93 Difference]: Finished difference Result 54379 states and 77247 transitions. [2018-07-24 11:53:53,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:53:53,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-07-24 11:53:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:53:53,622 INFO L225 Difference]: With dead ends: 54379 [2018-07-24 11:53:53,622 INFO L226 Difference]: Without dead ends: 33160 [2018-07-24 11:53:53,678 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:53:53,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33160 states. [2018-07-24 11:53:54,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33160 to 33064. [2018-07-24 11:53:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33064 states. [2018-07-24 11:53:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33064 states to 33064 states and 43230 transitions. [2018-07-24 11:53:54,325 INFO L78 Accepts]: Start accepts. Automaton has 33064 states and 43230 transitions. Word has length 158 [2018-07-24 11:53:54,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:53:54,325 INFO L471 AbstractCegarLoop]: Abstraction has 33064 states and 43230 transitions. [2018-07-24 11:53:54,325 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:53:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 33064 states and 43230 transitions. [2018-07-24 11:53:54,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-24 11:53:54,332 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:53:54,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:54,332 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 11:53:54,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1859556513, now seen corresponding path program 1 times [2018-07-24 11:53:54,333 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:53:54,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:54,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:54,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:53:54,334 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:53:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:53:54,584 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:53:54,584 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 11:53:54,584 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:53:54,585 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 11:53:54,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 11:53:54,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:53:54,585 INFO L87 Difference]: Start difference. First operand 33064 states and 43230 transitions. Second operand 4 states. [2018-07-24 11:54:07,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:54:07,302 INFO L93 Difference]: Finished difference Result 73236 states and 97495 transitions. [2018-07-24 11:54:07,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 11:54:07,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2018-07-24 11:54:07,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:54:07,404 INFO L225 Difference]: With dead ends: 73236 [2018-07-24 11:54:07,404 INFO L226 Difference]: Without dead ends: 40178 [2018-07-24 11:54:07,464 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 11:54:07,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40178 states. [2018-07-24 11:54:07,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40178 to 40175. [2018-07-24 11:54:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40175 states. [2018-07-24 11:54:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40175 states to 40175 states and 49774 transitions. [2018-07-24 11:54:08,072 INFO L78 Accepts]: Start accepts. Automaton has 40175 states and 49774 transitions. Word has length 182 [2018-07-24 11:54:08,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:54:08,073 INFO L471 AbstractCegarLoop]: Abstraction has 40175 states and 49774 transitions. [2018-07-24 11:54:08,073 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 11:54:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 40175 states and 49774 transitions. [2018-07-24 11:54:08,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-24 11:54:08,086 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:54:08,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:08,087 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 11:54:08,087 INFO L82 PathProgramCache]: Analyzing trace with hash -143804315, now seen corresponding path program 1 times [2018-07-24 11:54:08,088 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:54:08,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:08,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:08,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:08,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:54:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:08,421 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:54:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:54:08,887 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:54:08,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:54:08,887 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:54:08,888 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:54:08,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:54:08,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:54:08,888 INFO L87 Difference]: Start difference. First operand 40175 states and 49774 transitions. Second operand 6 states. [2018-07-24 11:54:16,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:54:16,372 INFO L93 Difference]: Finished difference Result 87878 states and 111438 transitions. [2018-07-24 11:54:16,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:54:16,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 232 [2018-07-24 11:54:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:54:16,502 INFO L225 Difference]: With dead ends: 87878 [2018-07-24 11:54:16,503 INFO L226 Difference]: Without dead ends: 47709 [2018-07-24 11:54:16,549 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:54:16,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47709 states. [2018-07-24 11:54:17,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47709 to 47594. [2018-07-24 11:54:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47594 states. [2018-07-24 11:54:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47594 states to 47594 states and 56407 transitions. [2018-07-24 11:54:17,293 INFO L78 Accepts]: Start accepts. Automaton has 47594 states and 56407 transitions. Word has length 232 [2018-07-24 11:54:17,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:54:17,293 INFO L471 AbstractCegarLoop]: Abstraction has 47594 states and 56407 transitions. [2018-07-24 11:54:17,293 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:54:17,294 INFO L276 IsEmpty]: Start isEmpty. Operand 47594 states and 56407 transitions. [2018-07-24 11:54:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-24 11:54:17,307 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:54:17,308 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:17,308 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 11:54:17,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1897961368, now seen corresponding path program 1 times [2018-07-24 11:54:17,308 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:54:17,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:17,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:17,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:17,310 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:54:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 84 proven. 155 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 11:54:17,577 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:54:17,577 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 11:54:17,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:17,586 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:54:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:17,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:54:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 11:54:17,980 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:54:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 86 proven. 153 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 11:54:18,780 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:54:18,780 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:54:18,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:18,810 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:54:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:19,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:54:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-07-24 11:54:19,327 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:54:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-07-24 11:54:19,819 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-07-24 11:54:19,820 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5] total 10 [2018-07-24 11:54:19,820 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:54:19,821 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:54:19,822 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:54:19,822 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:54:19,822 INFO L87 Difference]: Start difference. First operand 47594 states and 56407 transitions. Second operand 3 states. [2018-07-24 11:54:28,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:54:28,150 INFO L93 Difference]: Finished difference Result 138120 states and 167762 transitions. [2018-07-24 11:54:28,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:54:28,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 307 [2018-07-24 11:54:28,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:54:28,550 INFO L225 Difference]: With dead ends: 138120 [2018-07-24 11:54:28,551 INFO L226 Difference]: Without dead ends: 90532 [2018-07-24 11:54:28,717 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1234 GetRequests, 1223 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:54:28,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90532 states. [2018-07-24 11:54:30,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90532 to 88983. [2018-07-24 11:54:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88983 states. [2018-07-24 11:54:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88983 states to 88983 states and 106633 transitions. [2018-07-24 11:54:31,171 INFO L78 Accepts]: Start accepts. Automaton has 88983 states and 106633 transitions. Word has length 307 [2018-07-24 11:54:31,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:54:31,171 INFO L471 AbstractCegarLoop]: Abstraction has 88983 states and 106633 transitions. [2018-07-24 11:54:31,172 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:54:31,172 INFO L276 IsEmpty]: Start isEmpty. Operand 88983 states and 106633 transitions. [2018-07-24 11:54:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-07-24 11:54:31,242 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:54:31,243 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:31,243 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:54:31,243 INFO L82 PathProgramCache]: Analyzing trace with hash 55544743, now seen corresponding path program 1 times [2018-07-24 11:54:31,244 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:54:31,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:31,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:31,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:31,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:54:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:31,741 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-07-24 11:54:31,742 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:54:31,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 11:54:31,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:54:31,743 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 11:54:31,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 11:54:31,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:54:31,744 INFO L87 Difference]: Start difference. First operand 88983 states and 106633 transitions. Second operand 4 states. [2018-07-24 11:54:42,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:54:42,832 INFO L93 Difference]: Finished difference Result 219882 states and 267834 transitions. [2018-07-24 11:54:42,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 11:54:42,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 466 [2018-07-24 11:54:42,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:54:43,283 INFO L225 Difference]: With dead ends: 219882 [2018-07-24 11:54:43,284 INFO L226 Difference]: Without dead ends: 130905 [2018-07-24 11:54:43,447 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 11:54:43,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130905 states. [2018-07-24 11:54:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130905 to 128579. [2018-07-24 11:54:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128579 states. [2018-07-24 11:54:46,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128579 states to 128579 states and 155057 transitions. [2018-07-24 11:54:46,067 INFO L78 Accepts]: Start accepts. Automaton has 128579 states and 155057 transitions. Word has length 466 [2018-07-24 11:54:46,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:54:46,068 INFO L471 AbstractCegarLoop]: Abstraction has 128579 states and 155057 transitions. [2018-07-24 11:54:46,068 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 11:54:46,068 INFO L276 IsEmpty]: Start isEmpty. Operand 128579 states and 155057 transitions. [2018-07-24 11:54:46,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2018-07-24 11:54:46,178 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:54:46,179 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:46,179 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:54:46,180 INFO L82 PathProgramCache]: Analyzing trace with hash 601838560, now seen corresponding path program 1 times [2018-07-24 11:54:46,180 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:54:46,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:46,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:46,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:54:46,181 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:54:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:54:46,971 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:54:46,971 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 11:54:46,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:46,988 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:54:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:47,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:54:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:54:47,609 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:54:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:54:48,772 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:54:48,773 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 11:54:48,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:54:48,790 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:54:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:54:49,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:54:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:54:50,077 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:54:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:54:50,744 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:54:50,744 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 15 [2018-07-24 11:54:50,744 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:54:50,746 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 11:54:50,746 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 11:54:50,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:54:50,746 INFO L87 Difference]: Start difference. First operand 128579 states and 155057 transitions. Second operand 8 states. [2018-07-24 11:55:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:55:25,871 INFO L93 Difference]: Finished difference Result 315358 states and 429639 transitions. [2018-07-24 11:55:25,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-07-24 11:55:25,872 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 570 [2018-07-24 11:55:25,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:55:26,891 INFO L225 Difference]: With dead ends: 315358 [2018-07-24 11:55:26,891 INFO L226 Difference]: Without dead ends: 186785 [2018-07-24 11:55:27,245 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2349 GetRequests, 2300 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=429, Invalid=1827, Unknown=0, NotChecked=0, Total=2256 [2018-07-24 11:55:27,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186785 states. [2018-07-24 11:55:30,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186785 to 179357. [2018-07-24 11:55:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179357 states. [2018-07-24 11:55:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179357 states to 179357 states and 211686 transitions. [2018-07-24 11:55:31,272 INFO L78 Accepts]: Start accepts. Automaton has 179357 states and 211686 transitions. Word has length 570 [2018-07-24 11:55:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:55:31,273 INFO L471 AbstractCegarLoop]: Abstraction has 179357 states and 211686 transitions. [2018-07-24 11:55:31,273 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 11:55:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand 179357 states and 211686 transitions. [2018-07-24 11:55:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2018-07-24 11:55:31,366 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:55:31,367 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:31,367 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:55:31,367 INFO L82 PathProgramCache]: Analyzing trace with hash 417708753, now seen corresponding path program 1 times [2018-07-24 11:55:31,367 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:55:31,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:31,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:31,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:31,369 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:55:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:32,052 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 86 proven. 458 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 11:55:32,052 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:55:32,052 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 11:55:32,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:32,060 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:55:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:33,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:55:33,634 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2018-07-24 11:55:33,634 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:55:34,262 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 86 proven. 318 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-07-24 11:55:34,282 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:55:34,283 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:55:34,283 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:55:34,283 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:55:34,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:55:34,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:55:34,284 INFO L87 Difference]: Start difference. First operand 179357 states and 211686 transitions. Second operand 5 states. [2018-07-24 11:55:45,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:55:45,483 INFO L93 Difference]: Finished difference Result 475299 states and 564904 transitions. [2018-07-24 11:55:45,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:55:45,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 612 [2018-07-24 11:55:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:55:46,252 INFO L225 Difference]: With dead ends: 475299 [2018-07-24 11:55:46,252 INFO L226 Difference]: Without dead ends: 295953 [2018-07-24 11:55:47,564 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1233 GetRequests, 1221 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:55:47,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295953 states. [2018-07-24 11:55:56,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295953 to 293943. [2018-07-24 11:55:56,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293943 states. [2018-07-24 11:55:56,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293943 states to 293943 states and 338993 transitions. [2018-07-24 11:55:56,942 INFO L78 Accepts]: Start accepts. Automaton has 293943 states and 338993 transitions. Word has length 612 [2018-07-24 11:55:56,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:55:56,943 INFO L471 AbstractCegarLoop]: Abstraction has 293943 states and 338993 transitions. [2018-07-24 11:55:56,943 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:55:56,943 INFO L276 IsEmpty]: Start isEmpty. Operand 293943 states and 338993 transitions. [2018-07-24 11:55:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-07-24 11:55:57,022 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:55:57,022 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:57,023 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:55:57,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1454505769, now seen corresponding path program 1 times [2018-07-24 11:55:57,023 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:55:57,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:57,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:57,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:57,024 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:55:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:57,460 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:55:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 84 proven. 362 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:55:58,796 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:55:58,796 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 11:55:58,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:58,805 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:55:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:59,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:55:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 504 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-07-24 11:55:59,241 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:55:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 231 proven. 154 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-07-24 11:55:59,758 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:55:59,758 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:55:59,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:59,776 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:56:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:00,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:56:00,986 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 357 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-07-24 11:56:00,986 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:56:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 86 proven. 295 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-07-24 11:56:01,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:56:01,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 11:56:01,408 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:56:01,409 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:56:01,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:56:01,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:56:01,410 INFO L87 Difference]: Start difference. First operand 293943 states and 338993 transitions. Second operand 9 states. [2018-07-24 11:56:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:14,057 INFO L93 Difference]: Finished difference Result 585684 states and 676375 transitions. [2018-07-24 11:56:14,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 11:56:14,057 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 635 [2018-07-24 11:56:14,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:14,749 INFO L225 Difference]: With dead ends: 585684 [2018-07-24 11:56:14,750 INFO L226 Difference]: Without dead ends: 276962 [2018-07-24 11:56:15,054 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2561 GetRequests, 2535 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2018-07-24 11:56:15,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276962 states. Received shutdown request... [2018-07-24 11:56:15,735 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:56:15,740 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:56:15,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:56:15 BoogieIcfgContainer [2018-07-24 11:56:15,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:56:15,741 INFO L168 Benchmark]: Toolchain (without parser) took 218906.72 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -953.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-24 11:56:15,743 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 11:56:15,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2741.95 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:56:15,744 INFO L168 Benchmark]: Boogie Procedure Inliner took 232.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:56:15,745 INFO L168 Benchmark]: Boogie Preprocessor took 841.92 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 907.5 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-07-24 11:56:15,746 INFO L168 Benchmark]: RCFGBuilder took 9659.15 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 166.2 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -148.2 MB). Peak memory consumption was 728.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:56:15,750 INFO L168 Benchmark]: TraceAbstraction took 205425.76 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 77.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-07-24 11:56:15,759 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2741.95 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 232.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 841.92 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 907.5 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9659.15 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 166.2 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -148.2 MB). Peak memory consumption was 728.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205425.76 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 77.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 90). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 205.3s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 163.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5264 SDtfs, 44885 SDslu, 2387 SDs, 0 SdLazy, 74324 SolverSat, 18444 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7443 GetRequests, 7299 SyntacticMatches, 22 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293943occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 22.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 13721 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 7200 NumberOfCodeBlocks, 7200 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 10810 ConstructedInterpolants, 0 QuantifiedInterpolants, 16059163 SizeOfPredicates, 7 NumberOfNonLiveVariables, 5548 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 26 InterpolantComputations, 11 PerfectInterpolantSequences, 6596/8507 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/Problem12_label42_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-56-15-773.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label42_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-56-15-773.csv Completed graceful shutdown