java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 10:25:53,957 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 10:25:53,960 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 10:25:53,973 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 10:25:53,974 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 10:25:53,975 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 10:25:53,976 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 10:25:53,978 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 10:25:53,980 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 10:25:53,981 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 10:25:53,982 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 10:25:53,982 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 10:25:53,983 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 10:25:53,984 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 10:25:53,985 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 10:25:53,986 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 10:25:53,987 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 10:25:53,989 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 10:25:53,990 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 10:25:53,992 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 10:25:53,993 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 10:25:53,994 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 10:25:53,997 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 10:25:53,997 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 10:25:53,997 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 10:25:53,998 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 10:25:53,999 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 10:25:54,000 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 10:25:54,000 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 10:25:54,001 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 10:25:54,002 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 10:25:54,002 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 10:25:54,003 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 10:25:54,003 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 10:25:54,004 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 10:25:54,004 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 10:25:54,005 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 10:25:54,020 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 10:25:54,020 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 10:25:54,021 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 10:25:54,021 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 10:25:54,021 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 10:25:54,022 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 10:25:54,022 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 10:25:54,022 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 10:25:54,022 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 10:25:54,023 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 10:25:54,023 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 10:25:54,024 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 10:25:54,024 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 10:25:54,024 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 10:25:54,024 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 10:25:54,024 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 10:25:54,025 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 10:25:54,025 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 10:25:54,025 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 10:25:54,025 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 10:25:54,025 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 10:25:54,025 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 10:25:54,026 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 10:25:54,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:25:54,026 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 10:25:54,026 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 10:25:54,026 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 10:25:54,027 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 10:25:54,027 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 10:25:54,027 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 10:25:54,027 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 10:25:54,027 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 10:25:54,028 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 10:25:54,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 10:25:54,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 10:25:54,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 10:25:54,090 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 10:25:54,091 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 10:25:54,092 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label18_true-unreach-call.c [2018-09-10 10:25:54,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c19b63a/867a684ea98d47bf83d26b635e777e08/FLAG7650698e3 [2018-09-10 10:25:54,785 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 10:25:54,788 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label18_true-unreach-call.c [2018-09-10 10:25:54,818 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c19b63a/867a684ea98d47bf83d26b635e777e08/FLAG7650698e3 [2018-09-10 10:25:54,839 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7c19b63a/867a684ea98d47bf83d26b635e777e08 [2018-09-10 10:25:54,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 10:25:54,856 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 10:25:54,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 10:25:54,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 10:25:54,868 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 10:25:54,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:25:54" (1/1) ... [2018-09-10 10:25:54,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c28e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:54, skipping insertion in model container [2018-09-10 10:25:54,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:25:54" (1/1) ... [2018-09-10 10:25:55,168 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 10:25:55,677 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:25:55,700 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 10:25:55,999 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:25:56,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:56 WrapperNode [2018-09-10 10:25:56,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 10:25:56,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 10:25:56,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 10:25:56,076 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 10:25:56,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:56" (1/1) ... [2018-09-10 10:25:56,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:56" (1/1) ... [2018-09-10 10:25:56,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 10:25:56,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 10:25:56,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 10:25:56,243 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 10:25:56,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:56" (1/1) ... [2018-09-10 10:25:56,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:56" (1/1) ... [2018-09-10 10:25:56,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:56" (1/1) ... [2018-09-10 10:25:56,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:56" (1/1) ... [2018-09-10 10:25:56,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:56" (1/1) ... [2018-09-10 10:25:56,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:56" (1/1) ... [2018-09-10 10:25:56,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:56" (1/1) ... [2018-09-10 10:25:56,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 10:25:56,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 10:25:56,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 10:25:56,679 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 10:25:56,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:25:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 10:25:56,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 10:25:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 10:25:56,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 10:25:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 10:25:56,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 10:25:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 10:25:56,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 10:26:02,058 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 10:26:02,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:26:02 BoogieIcfgContainer [2018-09-10 10:26:02,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 10:26:02,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 10:26:02,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 10:26:02,063 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 10:26:02,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:25:54" (1/3) ... [2018-09-10 10:26:02,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108efc9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:26:02, skipping insertion in model container [2018-09-10 10:26:02,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:25:56" (2/3) ... [2018-09-10 10:26:02,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108efc9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:26:02, skipping insertion in model container [2018-09-10 10:26:02,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:26:02" (3/3) ... [2018-09-10 10:26:02,067 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label18_true-unreach-call.c [2018-09-10 10:26:02,077 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 10:26:02,088 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 10:26:02,146 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 10:26:02,147 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 10:26:02,147 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 10:26:02,147 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 10:26:02,147 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 10:26:02,147 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 10:26:02,147 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 10:26:02,148 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 10:26:02,148 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 10:26:02,178 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-09-10 10:26:02,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-10 10:26:02,199 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:26:02,200 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:26:02,202 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:26:02,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1820417999, now seen corresponding path program 1 times [2018-09-10 10:26:02,209 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:26:02,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:02,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:02,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:02,256 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:26:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:03,092 WARN L175 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:26:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:03,256 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:26:03,256 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 10:26:03,256 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:26:03,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:26:03,276 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:26:03,277 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:26:03,280 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-09-10 10:26:05,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:26:05,214 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-09-10 10:26:05,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:26:05,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-09-10 10:26:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:26:05,240 INFO L225 Difference]: With dead ends: 844 [2018-09-10 10:26:05,240 INFO L226 Difference]: Without dead ends: 530 [2018-09-10 10:26:05,248 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:26:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-09-10 10:26:05,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-09-10 10:26:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-09-10 10:26:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-09-10 10:26:05,336 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 210 [2018-09-10 10:26:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:26:05,338 INFO L480 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-09-10 10:26:05,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:26:05,338 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-09-10 10:26:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-10 10:26:05,348 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:26:05,348 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:26:05,349 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:26:05,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1878986571, now seen corresponding path program 1 times [2018-09-10 10:26:05,349 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:26:05,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:05,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:05,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:05,351 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:26:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:05,859 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:26:05,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 10:26:05,860 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:26:05,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:26:05,864 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:26:05,864 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:26:05,865 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 3 states. [2018-09-10 10:26:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:26:08,026 INFO L93 Difference]: Finished difference Result 1477 states and 2511 transitions. [2018-09-10 10:26:08,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:26:08,026 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2018-09-10 10:26:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:26:08,036 INFO L225 Difference]: With dead ends: 1477 [2018-09-10 10:26:08,036 INFO L226 Difference]: Without dead ends: 958 [2018-09-10 10:26:08,042 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:26:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2018-09-10 10:26:08,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 943. [2018-09-10 10:26:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2018-09-10 10:26:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1546 transitions. [2018-09-10 10:26:08,088 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1546 transitions. Word has length 223 [2018-09-10 10:26:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:26:08,088 INFO L480 AbstractCegarLoop]: Abstraction has 943 states and 1546 transitions. [2018-09-10 10:26:08,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:26:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1546 transitions. [2018-09-10 10:26:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-10 10:26:08,096 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:26:08,096 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:26:08,096 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:26:08,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1705825864, now seen corresponding path program 1 times [2018-09-10 10:26:08,097 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:26:08,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:08,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:08,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:08,099 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:26:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:08,614 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:26:08,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-10 10:26:08,614 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:26:08,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 10:26:08,616 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 10:26:08,616 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 10:26:08,616 INFO L87 Difference]: Start difference. First operand 943 states and 1546 transitions. Second operand 7 states. [2018-09-10 10:26:11,367 WARN L175 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-10 10:26:14,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:26:14,108 INFO L93 Difference]: Finished difference Result 2923 states and 5188 transitions. [2018-09-10 10:26:14,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 10:26:14,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2018-09-10 10:26:14,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:26:14,138 INFO L225 Difference]: With dead ends: 2923 [2018-09-10 10:26:14,139 INFO L226 Difference]: Without dead ends: 1986 [2018-09-10 10:26:14,144 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 10:26:14,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2018-09-10 10:26:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1885. [2018-09-10 10:26:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2018-09-10 10:26:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3120 transitions. [2018-09-10 10:26:14,258 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3120 transitions. Word has length 228 [2018-09-10 10:26:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:26:14,259 INFO L480 AbstractCegarLoop]: Abstraction has 1885 states and 3120 transitions. [2018-09-10 10:26:14,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 10:26:14,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3120 transitions. [2018-09-10 10:26:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-10 10:26:14,270 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:26:14,271 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:26:14,271 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:26:14,271 INFO L82 PathProgramCache]: Analyzing trace with hash 637352951, now seen corresponding path program 1 times [2018-09-10 10:26:14,272 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:26:14,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:14,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:14,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:14,273 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:26:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:26:14,668 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:26:14,668 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:26:14,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:14,678 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:26:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:15,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:26:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-09-10 10:26:15,535 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:26:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:26:16,055 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 10:26:16,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 10:26:16,056 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:26:16,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:26:16,057 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:26:16,057 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:26:16,057 INFO L87 Difference]: Start difference. First operand 1885 states and 3120 transitions. Second operand 5 states. [2018-09-10 10:26:19,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:26:19,740 INFO L93 Difference]: Finished difference Result 6151 states and 10653 transitions. [2018-09-10 10:26:19,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:26:19,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2018-09-10 10:26:19,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:26:19,771 INFO L225 Difference]: With dead ends: 6151 [2018-09-10 10:26:19,771 INFO L226 Difference]: Without dead ends: 4272 [2018-09-10 10:26:19,783 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 463 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-10 10:26:19,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2018-09-10 10:26:19,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 3812. [2018-09-10 10:26:19,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3812 states. [2018-09-10 10:26:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3812 states to 3812 states and 6098 transitions. [2018-09-10 10:26:19,908 INFO L78 Accepts]: Start accepts. Automaton has 3812 states and 6098 transitions. Word has length 234 [2018-09-10 10:26:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:26:19,909 INFO L480 AbstractCegarLoop]: Abstraction has 3812 states and 6098 transitions. [2018-09-10 10:26:19,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:26:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3812 states and 6098 transitions. [2018-09-10 10:26:19,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-09-10 10:26:19,925 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:26:19,926 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:26:19,926 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:26:19,926 INFO L82 PathProgramCache]: Analyzing trace with hash 902382392, now seen corresponding path program 1 times [2018-09-10 10:26:19,927 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:26:19,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:19,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:19,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:19,928 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:26:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:20,201 WARN L175 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:26:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:20,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:26:20,571 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:26:20,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:20,582 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:26:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:20,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:26:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:21,139 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:26:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:21,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:26:21,343 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:26:21,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:21,361 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:26:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:21,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:26:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-10 10:26:22,143 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:26:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-10 10:26:22,307 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-10 10:26:22,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 5, 5] total 17 [2018-09-10 10:26:22,308 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:26:22,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:26:22,309 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:26:22,309 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-09-10 10:26:22,309 INFO L87 Difference]: Start difference. First operand 3812 states and 6098 transitions. Second operand 5 states. [2018-09-10 10:26:23,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:26:23,281 INFO L93 Difference]: Finished difference Result 11539 states and 18993 transitions. [2018-09-10 10:26:23,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:26:23,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2018-09-10 10:26:23,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:26:23,325 INFO L225 Difference]: With dead ends: 11539 [2018-09-10 10:26:23,325 INFO L226 Difference]: Without dead ends: 7733 [2018-09-10 10:26:23,336 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 928 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-09-10 10:26:23,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7733 states. [2018-09-10 10:26:23,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7733 to 7651. [2018-09-10 10:26:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7651 states. [2018-09-10 10:26:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7651 states to 7651 states and 12364 transitions. [2018-09-10 10:26:23,547 INFO L78 Accepts]: Start accepts. Automaton has 7651 states and 12364 transitions. Word has length 235 [2018-09-10 10:26:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:26:23,548 INFO L480 AbstractCegarLoop]: Abstraction has 7651 states and 12364 transitions. [2018-09-10 10:26:23,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:26:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 7651 states and 12364 transitions. [2018-09-10 10:26:23,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-09-10 10:26:23,575 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:26:23,575 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:26:23,575 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:26:23,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1824685356, now seen corresponding path program 1 times [2018-09-10 10:26:23,576 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:26:23,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:23,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:23,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:23,577 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:26:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:24,042 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:26:24,042 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:26:24,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:24,057 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:26:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:24,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:26:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:24,754 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:26:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:25,145 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:26:25,145 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:26:25,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:25,160 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:26:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:25,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:26:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:25,731 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:26:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:25,921 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:26:25,922 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-09-10 10:26:25,922 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:26:25,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:26:25,923 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:26:25,924 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-10 10:26:25,924 INFO L87 Difference]: Start difference. First operand 7651 states and 12364 transitions. Second operand 9 states. [2018-09-10 10:26:42,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:26:42,773 INFO L93 Difference]: Finished difference Result 61723 states and 137112 transitions. [2018-09-10 10:26:42,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-10 10:26:42,773 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 237 [2018-09-10 10:26:42,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:26:43,264 INFO L225 Difference]: With dead ends: 61723 [2018-09-10 10:26:43,265 INFO L226 Difference]: Without dead ends: 54078 [2018-09-10 10:26:43,455 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 963 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=340, Invalid=1552, Unknown=0, NotChecked=0, Total=1892 [2018-09-10 10:26:43,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54078 states. [2018-09-10 10:26:45,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54078 to 51404. [2018-09-10 10:26:45,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51404 states. [2018-09-10 10:26:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51404 states to 51404 states and 79368 transitions. [2018-09-10 10:26:46,471 INFO L78 Accepts]: Start accepts. Automaton has 51404 states and 79368 transitions. Word has length 237 [2018-09-10 10:26:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:26:46,471 INFO L480 AbstractCegarLoop]: Abstraction has 51404 states and 79368 transitions. [2018-09-10 10:26:46,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:26:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 51404 states and 79368 transitions. [2018-09-10 10:26:46,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-09-10 10:26:46,629 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:26:46,630 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:26:46,630 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:26:46,631 INFO L82 PathProgramCache]: Analyzing trace with hash 42774952, now seen corresponding path program 1 times [2018-09-10 10:26:46,631 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:26:46,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:46,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:46,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:46,633 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:26:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:46,882 WARN L175 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-09-10 10:26:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:47,236 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:26:47,236 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:26:47,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:47,244 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:26:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:47,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:26:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:47,530 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:26:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:47,639 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:26:47,639 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 10:26:47,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:47,655 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:26:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:48,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:26:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:48,244 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:26:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:48,323 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:26:48,324 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 10:26:48,324 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:26:48,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:26:48,326 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:26:48,326 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:26:48,326 INFO L87 Difference]: Start difference. First operand 51404 states and 79368 transitions. Second operand 9 states. [2018-09-10 10:26:53,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:26:53,271 INFO L93 Difference]: Finished difference Result 181170 states and 284471 transitions. [2018-09-10 10:26:53,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-10 10:26:53,271 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 243 [2018-09-10 10:26:53,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:26:53,883 INFO L225 Difference]: With dead ends: 181170 [2018-09-10 10:26:53,883 INFO L226 Difference]: Without dead ends: 129792 [2018-09-10 10:26:54,081 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 964 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2018-09-10 10:26:54,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129792 states. [2018-09-10 10:26:57,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129792 to 129050. [2018-09-10 10:26:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129050 states. [2018-09-10 10:26:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129050 states to 129050 states and 182333 transitions. [2018-09-10 10:26:58,262 INFO L78 Accepts]: Start accepts. Automaton has 129050 states and 182333 transitions. Word has length 243 [2018-09-10 10:26:58,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:26:58,262 INFO L480 AbstractCegarLoop]: Abstraction has 129050 states and 182333 transitions. [2018-09-10 10:26:58,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:26:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 129050 states and 182333 transitions. [2018-09-10 10:26:58,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-09-10 10:26:58,440 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:26:58,440 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:26:58,441 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:26:58,441 INFO L82 PathProgramCache]: Analyzing trace with hash -789122775, now seen corresponding path program 1 times [2018-09-10 10:26:58,441 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:26:58,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:58,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:26:58,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:26:58,443 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:26:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:26:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:26:59,312 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:26:59,312 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 10:26:59,312 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:26:59,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 10:26:59,314 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 10:26:59,314 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 10:26:59,314 INFO L87 Difference]: Start difference. First operand 129050 states and 182333 transitions. Second operand 4 states. [2018-09-10 10:27:05,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:27:05,513 INFO L93 Difference]: Finished difference Result 288294 states and 415440 transitions. [2018-09-10 10:27:05,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 10:27:05,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2018-09-10 10:27:05,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:27:06,119 INFO L225 Difference]: With dead ends: 288294 [2018-09-10 10:27:06,119 INFO L226 Difference]: Without dead ends: 159668 [2018-09-10 10:27:06,340 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 10:27:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159668 states. [2018-09-10 10:27:09,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159668 to 157930. [2018-09-10 10:27:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157930 states. [2018-09-10 10:27:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157930 states to 157930 states and 215088 transitions. [2018-09-10 10:27:10,808 INFO L78 Accepts]: Start accepts. Automaton has 157930 states and 215088 transitions. Word has length 256 [2018-09-10 10:27:10,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:27:10,809 INFO L480 AbstractCegarLoop]: Abstraction has 157930 states and 215088 transitions. [2018-09-10 10:27:10,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 10:27:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 157930 states and 215088 transitions. [2018-09-10 10:27:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-09-10 10:27:11,019 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:27:11,022 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:27:11,022 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:27:11,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1066454812, now seen corresponding path program 1 times [2018-09-10 10:27:11,023 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:27:11,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:27:11,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:11,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:27:11,024 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:27:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 87 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-10 10:27:11,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:27:11,584 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:27:11,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:11,597 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:27:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:11,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:27:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-10 10:27:12,094 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:27:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 87 proven. 17 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-10 10:27:12,338 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:27:12,339 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:27:12,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:12,356 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:27:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:12,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:27:13,027 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 74 proven. 17 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-10 10:27:13,027 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:27:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 87 proven. 32 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:27:13,205 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:27:13,206 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 8] total 12 [2018-09-10 10:27:13,206 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:27:13,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:27:13,207 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:27:13,207 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-10 10:27:13,207 INFO L87 Difference]: Start difference. First operand 157930 states and 215088 transitions. Second operand 6 states. [2018-09-10 10:27:15,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:27:15,867 INFO L93 Difference]: Finished difference Result 276338 states and 373376 transitions. [2018-09-10 10:27:15,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-10 10:27:15,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 285 [2018-09-10 10:27:15,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:27:17,700 INFO L225 Difference]: With dead ends: 276338 [2018-09-10 10:27:17,700 INFO L226 Difference]: Without dead ends: 125929 [2018-09-10 10:27:17,886 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1128 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-09-10 10:27:17,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125929 states. [2018-09-10 10:27:20,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125929 to 124471. [2018-09-10 10:27:20,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124471 states. [2018-09-10 10:27:20,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124471 states to 124471 states and 163406 transitions. [2018-09-10 10:27:20,338 INFO L78 Accepts]: Start accepts. Automaton has 124471 states and 163406 transitions. Word has length 285 [2018-09-10 10:27:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:27:20,338 INFO L480 AbstractCegarLoop]: Abstraction has 124471 states and 163406 transitions. [2018-09-10 10:27:20,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:27:20,338 INFO L276 IsEmpty]: Start isEmpty. Operand 124471 states and 163406 transitions. [2018-09-10 10:27:20,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-09-10 10:27:20,512 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:27:20,513 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 10:27:20,513 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:27:20,513 INFO L82 PathProgramCache]: Analyzing trace with hash -930962593, now seen corresponding path program 1 times [2018-09-10 10:27:20,513 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:27:20,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:27:20,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:20,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:27:20,515 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:27:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:20,930 WARN L175 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:27:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 129 proven. 59 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-10 10:27:21,129 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:27:21,129 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:27:21,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:21,138 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:27:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:22,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:27:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 10:27:22,237 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:27:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 10:27:22,521 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 10:27:22,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 10:27:22,522 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:27:22,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:27:22,523 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:27:22,523 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:27:22,523 INFO L87 Difference]: Start difference. First operand 124471 states and 163406 transitions. Second operand 5 states. [2018-09-10 10:27:25,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:27:25,951 INFO L93 Difference]: Finished difference Result 278859 states and 373026 transitions. [2018-09-10 10:27:25,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:27:25,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 344 [2018-09-10 10:27:25,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:27:26,417 INFO L225 Difference]: With dead ends: 278859 [2018-09-10 10:27:26,417 INFO L226 Difference]: Without dead ends: 154997 [2018-09-10 10:27:26,624 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 681 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:27:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154997 states. [2018-09-10 10:27:32,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154997 to 153158. [2018-09-10 10:27:32,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153158 states. [2018-09-10 10:27:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153158 states to 153158 states and 193933 transitions. [2018-09-10 10:27:33,151 INFO L78 Accepts]: Start accepts. Automaton has 153158 states and 193933 transitions. Word has length 344 [2018-09-10 10:27:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:27:33,152 INFO L480 AbstractCegarLoop]: Abstraction has 153158 states and 193933 transitions. [2018-09-10 10:27:33,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:27:33,152 INFO L276 IsEmpty]: Start isEmpty. Operand 153158 states and 193933 transitions. [2018-09-10 10:27:33,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-09-10 10:27:33,292 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:27:33,292 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:27:33,292 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:27:33,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1016366656, now seen corresponding path program 1 times [2018-09-10 10:27:33,292 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:27:33,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:27:33,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:33,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:27:33,294 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:27:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:27:34,050 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:27:34,050 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:27:34,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:34,068 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:27:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:35,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:27:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:27:35,293 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:27:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:27:36,020 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:27:36,021 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:27:36,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:36,051 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:27:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:36,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:27:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:27:36,908 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:27:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:27:37,247 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:27:37,247 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 6] total 16 [2018-09-10 10:27:37,247 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:27:37,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 10:27:37,249 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 10:27:37,249 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-09-10 10:27:37,249 INFO L87 Difference]: Start difference. First operand 153158 states and 193933 transitions. Second operand 7 states. [2018-09-10 10:27:42,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:27:42,924 INFO L93 Difference]: Finished difference Result 313649 states and 412275 transitions. [2018-09-10 10:27:42,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 10:27:42,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 377 [2018-09-10 10:27:42,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:27:43,556 INFO L225 Difference]: With dead ends: 313649 [2018-09-10 10:27:43,556 INFO L226 Difference]: Without dead ends: 161104 [2018-09-10 10:27:43,792 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1516 GetRequests, 1500 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2018-09-10 10:27:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161104 states. [2018-09-10 10:27:46,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161104 to 158240. [2018-09-10 10:27:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158240 states. [2018-09-10 10:27:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158240 states to 158240 states and 192150 transitions. [2018-09-10 10:27:47,241 INFO L78 Accepts]: Start accepts. Automaton has 158240 states and 192150 transitions. Word has length 377 [2018-09-10 10:27:47,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:27:47,242 INFO L480 AbstractCegarLoop]: Abstraction has 158240 states and 192150 transitions. [2018-09-10 10:27:47,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 10:27:47,242 INFO L276 IsEmpty]: Start isEmpty. Operand 158240 states and 192150 transitions. [2018-09-10 10:27:47,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-09-10 10:27:47,375 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:27:47,376 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:27:47,376 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:27:47,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1423222277, now seen corresponding path program 1 times [2018-09-10 10:27:47,376 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:27:47,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:27:47,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:47,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:27:47,378 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:27:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 225 proven. 31 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 10:27:47,815 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:27:47,815 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:27:47,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:47,824 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:27:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:48,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:27:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 10:27:48,300 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:27:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 225 proven. 31 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 10:27:48,505 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:27:48,505 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:27:48,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:48,521 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:27:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:49,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:27:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 10:27:50,075 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:27:50,247 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 225 proven. 31 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 10:27:50,250 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:27:50,251 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 14 [2018-09-10 10:27:50,251 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:27:50,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:27:50,252 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:27:50,252 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-09-10 10:27:50,252 INFO L87 Difference]: Start difference. First operand 158240 states and 192150 transitions. Second operand 6 states. [2018-09-10 10:27:54,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:27:54,524 INFO L93 Difference]: Finished difference Result 262932 states and 331671 transitions. [2018-09-10 10:27:54,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 10:27:54,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 409 [2018-09-10 10:27:54,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:27:54,872 INFO L225 Difference]: With dead ends: 262932 [2018-09-10 10:27:54,872 INFO L226 Difference]: Without dead ends: 105290 [2018-09-10 10:27:55,100 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1646 GetRequests, 1628 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-09-10 10:27:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105290 states. [2018-09-10 10:27:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105290 to 102220. [2018-09-10 10:27:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102220 states. [2018-09-10 10:27:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102220 states to 102220 states and 120171 transitions. [2018-09-10 10:27:57,649 INFO L78 Accepts]: Start accepts. Automaton has 102220 states and 120171 transitions. Word has length 409 [2018-09-10 10:27:57,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:27:57,649 INFO L480 AbstractCegarLoop]: Abstraction has 102220 states and 120171 transitions. [2018-09-10 10:27:57,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:27:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 102220 states and 120171 transitions. [2018-09-10 10:27:57,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-09-10 10:27:57,753 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:27:57,753 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2018-09-10 10:27:57,753 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:27:57,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1218152267, now seen corresponding path program 1 times [2018-09-10 10:27:57,754 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:27:57,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:27:57,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:57,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:27:57,755 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:27:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:58,130 WARN L175 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:27:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 201 proven. 124 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 10:27:58,271 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:27:58,271 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:27:58,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:27:58,280 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:27:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:27:58,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:27:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2018-09-10 10:27:59,144 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:27:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 201 proven. 124 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 10:27:59,736 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 10:27:59,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-10 10:27:59,737 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:27:59,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:27:59,737 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:27:59,737 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-09-10 10:27:59,738 INFO L87 Difference]: Start difference. First operand 102220 states and 120171 transitions. Second operand 6 states. [2018-09-10 10:28:02,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:28:02,662 INFO L93 Difference]: Finished difference Result 159509 states and 189000 transitions. [2018-09-10 10:28:02,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 10:28:02,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 422 [2018-09-10 10:28:02,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:28:02,954 INFO L225 Difference]: With dead ends: 159509 [2018-09-10 10:28:02,954 INFO L226 Difference]: Without dead ends: 103288 [2018-09-10 10:28:03,067 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 857 GetRequests, 836 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2018-09-10 10:28:03,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103288 states. [2018-09-10 10:28:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103288 to 102315. [2018-09-10 10:28:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102315 states. [2018-09-10 10:28:05,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102315 states to 102315 states and 120018 transitions. [2018-09-10 10:28:05,719 INFO L78 Accepts]: Start accepts. Automaton has 102315 states and 120018 transitions. Word has length 422 [2018-09-10 10:28:05,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:28:05,720 INFO L480 AbstractCegarLoop]: Abstraction has 102315 states and 120018 transitions. [2018-09-10 10:28:05,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:28:05,720 INFO L276 IsEmpty]: Start isEmpty. Operand 102315 states and 120018 transitions. [2018-09-10 10:28:05,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-09-10 10:28:05,831 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:28:05,831 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2018-09-10 10:28:05,832 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:28:05,832 INFO L82 PathProgramCache]: Analyzing trace with hash 327606366, now seen corresponding path program 1 times [2018-09-10 10:28:05,832 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:28:05,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:28:05,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:28:05,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:28:05,833 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:28:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:28:06,170 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-09-10 10:28:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 205 proven. 124 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 10:28:06,453 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:28:06,453 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:28:06,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:28:06,463 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:28:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:28:06,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:28:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2018-09-10 10:28:07,256 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:28:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 205 proven. 124 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-10 10:28:07,486 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 10:28:07,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 10:28:07,486 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:28:07,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:28:07,487 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:28:07,487 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:28:07,488 INFO L87 Difference]: Start difference. First operand 102315 states and 120018 transitions. Second operand 5 states. [2018-09-10 10:28:10,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:28:10,380 INFO L93 Difference]: Finished difference Result 197057 states and 231323 transitions. [2018-09-10 10:28:10,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:28:10,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2018-09-10 10:28:10,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:28:10,603 INFO L225 Difference]: With dead ends: 197057 [2018-09-10 10:28:10,603 INFO L226 Difference]: Without dead ends: 98905 [2018-09-10 10:28:10,707 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 843 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-09-10 10:28:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98905 states. [2018-09-10 10:28:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98905 to 98399. [2018-09-10 10:28:12,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98399 states. [2018-09-10 10:28:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98399 states to 98399 states and 114712 transitions. [2018-09-10 10:28:12,589 INFO L78 Accepts]: Start accepts. Automaton has 98399 states and 114712 transitions. Word has length 424 [2018-09-10 10:28:12,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:28:12,589 INFO L480 AbstractCegarLoop]: Abstraction has 98399 states and 114712 transitions. [2018-09-10 10:28:12,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:28:12,589 INFO L276 IsEmpty]: Start isEmpty. Operand 98399 states and 114712 transitions. [2018-09-10 10:28:12,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-09-10 10:28:12,698 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:28:12,698 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:28:12,699 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:28:12,699 INFO L82 PathProgramCache]: Analyzing trace with hash 903596841, now seen corresponding path program 1 times [2018-09-10 10:28:12,699 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:28:12,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:28:12,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:28:12,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:28:12,700 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:28:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:28:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 295 proven. 65 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 10:28:13,399 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:28:13,399 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:28:13,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:28:13,407 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:28:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:28:13,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:28:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 10:28:13,913 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:28:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 295 proven. 65 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 10:28:14,146 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:28:14,146 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 19 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 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:28:14,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:28:14,164 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:28:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:28:14,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:28:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 10:28:15,582 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:28:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 295 proven. 65 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 10:28:16,705 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:28:16,706 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 6] total 16 [2018-09-10 10:28:16,706 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:28:16,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-10 10:28:16,707 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-10 10:28:16,708 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-09-10 10:28:16,708 INFO L87 Difference]: Start difference. First operand 98399 states and 114712 transitions. Second operand 7 states. [2018-09-10 10:28:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:28:20,354 INFO L93 Difference]: Finished difference Result 292849 states and 356474 transitions. [2018-09-10 10:28:20,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 10:28:20,355 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 443 [2018-09-10 10:28:20,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:28:21,704 INFO L225 Difference]: With dead ends: 292849 [2018-09-10 10:28:21,704 INFO L226 Difference]: Without dead ends: 213444 [2018-09-10 10:28:21,807 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1780 GetRequests, 1764 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2018-09-10 10:28:21,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213444 states. [2018-09-10 10:28:25,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213444 to 209611. [2018-09-10 10:28:25,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209611 states. [2018-09-10 10:28:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209611 states to 209611 states and 245789 transitions. [2018-09-10 10:28:25,843 INFO L78 Accepts]: Start accepts. Automaton has 209611 states and 245789 transitions. Word has length 443 [2018-09-10 10:28:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:28:25,844 INFO L480 AbstractCegarLoop]: Abstraction has 209611 states and 245789 transitions. [2018-09-10 10:28:25,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-10 10:28:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 209611 states and 245789 transitions. [2018-09-10 10:28:26,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2018-09-10 10:28:26,127 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:28:26,127 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 10:28:26,128 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:28:26,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1836363141, now seen corresponding path program 1 times [2018-09-10 10:28:26,128 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:28:26,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:28:26,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:28:26,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:28:26,129 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:28:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:28:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 358 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:28:26,782 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:28:26,782 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:28:26,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:28:26,791 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:28:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:28:27,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:28:27,290 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 10:28:27,290 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:28:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 297 proven. 65 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-10 10:28:27,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:28:27,812 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 21 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 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:28:27,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:28:27,828 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:28:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:28:28,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:28:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 292 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:28:29,638 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:28:30,070 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 361 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:28:30,073 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:28:30,074 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 11, 8] total 28 [2018-09-10 10:28:30,074 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:28:30,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-10 10:28:30,075 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-10 10:28:30,075 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2018-09-10 10:28:30,076 INFO L87 Difference]: Start difference. First operand 209611 states and 245789 transitions. Second operand 13 states. [2018-09-10 10:28:42,138 WARN L175 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2018-09-10 10:28:54,926 WARN L175 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-10 10:29:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:12,556 INFO L93 Difference]: Finished difference Result 621773 states and 883444 transitions. [2018-09-10 10:29:12,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-10 10:29:12,556 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 445 [2018-09-10 10:29:12,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:16,075 INFO L225 Difference]: With dead ends: 621773 [2018-09-10 10:29:16,075 INFO L226 Difference]: Without dead ends: 445407 [2018-09-10 10:29:16,457 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1957 GetRequests, 1824 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6165 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2375, Invalid=15181, Unknown=0, NotChecked=0, Total=17556 [2018-09-10 10:29:16,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445407 states. Received shutdown request... [2018-09-10 10:29:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445407 to 395404. [2018-09-10 10:29:27,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395404 states. [2018-09-10 10:29:27,938 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 10:29:27,944 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 10:29:27,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 10:29:27 BoogieIcfgContainer [2018-09-10 10:29:27,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 10:29:27,945 INFO L168 Benchmark]: Toolchain (without parser) took 213092.88 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -538.5 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-09-10 10:29:27,947 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 10:29:27,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1216.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-10 10:29:27,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 166.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-10 10:29:27,948 INFO L168 Benchmark]: Boogie Preprocessor took 435.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -920.8 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2018-09-10 10:29:27,949 INFO L168 Benchmark]: RCFGBuilder took 5380.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 281.8 MB). Peak memory consumption was 281.8 MB. Max. memory is 7.1 GB. [2018-09-10 10:29:27,950 INFO L168 Benchmark]: TraceAbstraction took 205884.94 ms. Allocated memory was 2.3 GB in the beginning and 5.1 GB in the end (delta: 2.8 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: -5.1 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-09-10 10:29:27,954 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1216.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 166.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 435.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -920.8 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5380.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 281.8 MB). Peak memory consumption was 281.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205884.94 ms. Allocated memory was 2.3 GB in the beginning and 5.1 GB in the end (delta: 2.8 GB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: -5.1 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1644]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1644). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 205.8s OverallTime, 16 OverallIterations, 4 TraceHistogramMax, 122.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3767 SDtfs, 21674 SDslu, 6468 SDs, 0 SdLazy, 34639 SolverSat, 7445 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13890 GetRequests, 13533 SyntacticMatches, 37 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7121 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209611occurred in iteration=15, 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: 47.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 20360 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.1s SsaConstructionTime, 8.5s SatisfiabilityAnalysisTime, 20.8s InterpolantComputationTime, 11787 NumberOfCodeBlocks, 11787 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 18503 ConstructedInterpolants, 0 QuantifiedInterpolants, 14620862 SizeOfPredicates, 36 NumberOfNonLiveVariables, 24648 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 56 InterpolantComputations, 10 PerfectInterpolantSequences, 9959/11277 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label18_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_10-29-27-970.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label18_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_10-29-27-970.csv Completed graceful shutdown