java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label04_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:54:52,807 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:54:52,809 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:54:52,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:54:52,822 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:54:52,823 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:54:52,825 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:54:52,826 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:54:52,828 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:54:52,829 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:54:52,830 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:54:52,830 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:54:52,831 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:54:52,832 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:54:52,833 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:54:52,834 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:54:52,835 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:54:52,839 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:54:52,844 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:54:52,849 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:54:52,850 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:54:52,854 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:54:52,859 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:54:52,859 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:54:52,860 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:54:52,861 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:54:52,865 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:54:52,866 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:54:52,866 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:54:52,870 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:54:52,870 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:54:52,871 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:54:52,871 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:54:52,871 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:54:52,872 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:54:52,873 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:54:52,873 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 11:54:52,888 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:54:52,889 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:54:52,891 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:54:52,891 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:54:52,891 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:54:52,892 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:54:52,892 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:54:52,892 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:54:52,892 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:54:52,892 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:54:52,893 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:54:52,893 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:54:52,893 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:54:52,894 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:54:52,894 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:54:52,894 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:54:52,894 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:54:52,895 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:54:52,895 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:54:52,895 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:54:52,895 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:54:52,896 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:54:52,896 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:54:52,896 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:54:52,896 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:54:52,896 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:54:52,897 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:54:52,897 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:54:52,897 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:54:52,897 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:54:52,898 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:54:52,898 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:54:52,898 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:54:52,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:54:52,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:54:52,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:54:52,976 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:54:52,977 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:54:52,977 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label04_false-unreach-call.c [2018-07-24 11:54:53,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ad9dde5/dcbe4d8468e1480b97bf21e0f0fe6b21/FLAG4888148d5 [2018-07-24 11:54:53,868 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:54:53,869 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label04_false-unreach-call.c [2018-07-24 11:54:53,910 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ad9dde5/dcbe4d8468e1480b97bf21e0f0fe6b21/FLAG4888148d5 [2018-07-24 11:54:53,931 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ad9dde5/dcbe4d8468e1480b97bf21e0f0fe6b21 [2018-07-24 11:54:53,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:54:53,947 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:54:53,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:54:53,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:54:53,959 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:54:53,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:54:53" (1/1) ... [2018-07-24 11:54:53,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52bb379b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:53, skipping insertion in model container [2018-07-24 11:54:53,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:54:53" (1/1) ... [2018-07-24 11:54:54,369 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:54:55,570 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:54:55,587 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:54:56,435 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:54:56,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56 WrapperNode [2018-07-24 11:54:56,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:54:56,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:54:56,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:54:56,785 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:54:56,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:56,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:57,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:54:57,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:54:57,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:54:57,132 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:54:57,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:57,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:57,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:57,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:58,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:58,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:58,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (1/1) ... [2018-07-24 11:54:58,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:54:58,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:54:58,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:54:58,319 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:54:58,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (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 [2018-07-24 11:54:58,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:54:58,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:54:58,383 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:54:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:54:58,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:54:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:54:58,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:54:58,383 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:54:58,384 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:54:58,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:54:58,384 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:54:58,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:54:58,384 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:54:58,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:55:12,929 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:55:12,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:55:12 BoogieIcfgContainer [2018-07-24 11:55:12,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:55:12,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:55:12,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:55:12,935 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:55:12,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:54:53" (1/3) ... [2018-07-24 11:55:12,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8c0831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:55:12, skipping insertion in model container [2018-07-24 11:55:12,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:54:56" (2/3) ... [2018-07-24 11:55:12,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8c0831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:55:12, skipping insertion in model container [2018-07-24 11:55:12,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:55:12" (3/3) ... [2018-07-24 11:55:12,938 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label04_false-unreach-call.c [2018-07-24 11:55:12,948 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:55:12,958 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:55:13,033 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:55:13,034 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:55:13,034 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:55:13,034 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:55:13,034 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:55:13,034 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:55:13,034 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:55:13,034 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:55:13,035 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:55:13,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 11:55:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-07-24 11:55:13,086 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:55:13,087 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:55:13,088 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:55:13,093 INFO L82 PathProgramCache]: Analyzing trace with hash 61225483, now seen corresponding path program 1 times [2018-07-24 11:55:13,096 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:55:13,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:13,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:13,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:13,151 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:55:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:13,525 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:55:13,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:55:13,592 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:55:13,593 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:55:13,593 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:55:13,597 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:55:13,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:55:13,609 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:55:13,611 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-07-24 11:55:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:55:22,570 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-07-24 11:55:22,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:55:22,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-07-24 11:55:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:55:22,608 INFO L225 Difference]: With dead ends: 3097 [2018-07-24 11:55:22,609 INFO L226 Difference]: Without dead ends: 1975 [2018-07-24 11:55:22,621 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:55:22,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-07-24 11:55:22,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-07-24 11:55:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-07-24 11:55:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-07-24 11:55:22,815 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 23 [2018-07-24 11:55:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:55:22,816 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-07-24 11:55:22,816 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:55:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-07-24 11:55:22,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-24 11:55:22,826 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:55:22,826 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:55:22,826 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:55:22,827 INFO L82 PathProgramCache]: Analyzing trace with hash 511124282, now seen corresponding path program 1 times [2018-07-24 11:55:22,827 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:55:22,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:22,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:22,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:22,830 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:55:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:55:23,277 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:55:23,277 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:55:23,278 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:55:23,280 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:55:23,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:55:23,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:55:23,281 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-07-24 11:55:44,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:55:44,738 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-07-24 11:55:44,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:55:44,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-07-24 11:55:44,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:55:44,771 INFO L225 Difference]: With dead ends: 5736 [2018-07-24 11:55:44,771 INFO L226 Difference]: Without dead ends: 3768 [2018-07-24 11:55:44,780 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:55:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-07-24 11:55:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-07-24 11:55:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-07-24 11:55:44,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-07-24 11:55:44,902 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 99 [2018-07-24 11:55:44,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:55:44,903 INFO L471 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-07-24 11:55:44,903 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:55:44,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-07-24 11:55:44,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-07-24 11:55:44,907 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:55:44,908 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:55:44,908 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:55:44,908 INFO L82 PathProgramCache]: Analyzing trace with hash -933882474, now seen corresponding path program 1 times [2018-07-24 11:55:44,908 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:55:44,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:44,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:55:44,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:55:44,910 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:55:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:55:45,221 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:55:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:55:45,589 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:55:45,589 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:55:45,589 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:55:45,590 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:55:45,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:55:45,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:55:45,593 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 6 states. [2018-07-24 11:56:01,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:01,451 INFO L93 Difference]: Finished difference Result 10872 states and 17249 transitions. [2018-07-24 11:56:01,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:56:01,451 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-07-24 11:56:01,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:01,491 INFO L225 Difference]: With dead ends: 10872 [2018-07-24 11:56:01,491 INFO L226 Difference]: Without dead ends: 7192 [2018-07-24 11:56:01,505 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:56:01,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7192 states. [2018-07-24 11:56:01,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7192 to 7143. [2018-07-24 11:56:01,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7143 states. [2018-07-24 11:56:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7143 states to 7143 states and 10339 transitions. [2018-07-24 11:56:01,697 INFO L78 Accepts]: Start accepts. Automaton has 7143 states and 10339 transitions. Word has length 113 [2018-07-24 11:56:01,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:56:01,697 INFO L471 AbstractCegarLoop]: Abstraction has 7143 states and 10339 transitions. [2018-07-24 11:56:01,698 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:56:01,698 INFO L276 IsEmpty]: Start isEmpty. Operand 7143 states and 10339 transitions. [2018-07-24 11:56:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-24 11:56:01,708 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:01,708 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:56:01,709 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:01,709 INFO L82 PathProgramCache]: Analyzing trace with hash -2060584010, now seen corresponding path program 1 times [2018-07-24 11:56:01,710 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:01,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:01,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:01,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:01,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:01,978 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:56:01,978 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:56:01,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:01,979 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:56:01,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:56:01,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:56:01,980 INFO L87 Difference]: Start difference. First operand 7143 states and 10339 transitions. Second operand 6 states. [2018-07-24 11:56:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:14,168 INFO L93 Difference]: Finished difference Result 24012 states and 36805 transitions. [2018-07-24 11:56:14,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:56:14,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-07-24 11:56:14,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:14,265 INFO L225 Difference]: With dead ends: 24012 [2018-07-24 11:56:14,265 INFO L226 Difference]: Without dead ends: 16875 [2018-07-24 11:56:14,308 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:56:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16875 states. [2018-07-24 11:56:14,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16875 to 16668. [2018-07-24 11:56:14,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16668 states. [2018-07-24 11:56:14,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16668 states to 16668 states and 23882 transitions. [2018-07-24 11:56:14,756 INFO L78 Accepts]: Start accepts. Automaton has 16668 states and 23882 transitions. Word has length 129 [2018-07-24 11:56:14,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:56:14,757 INFO L471 AbstractCegarLoop]: Abstraction has 16668 states and 23882 transitions. [2018-07-24 11:56:14,757 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:56:14,757 INFO L276 IsEmpty]: Start isEmpty. Operand 16668 states and 23882 transitions. [2018-07-24 11:56:14,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-07-24 11:56:14,762 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:14,762 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:56:14,764 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:14,765 INFO L82 PathProgramCache]: Analyzing trace with hash 2126015213, now seen corresponding path program 1 times [2018-07-24 11:56:14,765 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:14,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:14,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:14,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:14,767 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:15,103 WARN L169 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:56:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 32 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:56:15,514 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:56:15,515 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:56:15,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:15,537 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:56:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:15,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:56:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-07-24 11:56:16,197 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:56:16,502 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 11:56:17,223 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 32 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:56:17,256 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:56:17,257 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 11:56:17,258 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:17,259 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:56:17,262 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:56:17,262 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:56:17,263 INFO L87 Difference]: Start difference. First operand 16668 states and 23882 transitions. Second operand 5 states. [2018-07-24 11:56:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:38,110 INFO L93 Difference]: Finished difference Result 42949 states and 64416 transitions. [2018-07-24 11:56:38,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:56:38,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2018-07-24 11:56:38,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:38,217 INFO L225 Difference]: With dead ends: 42949 [2018-07-24 11:56:38,217 INFO L226 Difference]: Without dead ends: 26287 [2018-07-24 11:56:38,298 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:56:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26287 states. [2018-07-24 11:56:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26287 to 26179. [2018-07-24 11:56:38,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26179 states. [2018-07-24 11:56:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26179 states to 26179 states and 36796 transitions. [2018-07-24 11:56:39,038 INFO L78 Accepts]: Start accepts. Automaton has 26179 states and 36796 transitions. Word has length 177 [2018-07-24 11:56:39,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:56:39,038 INFO L471 AbstractCegarLoop]: Abstraction has 26179 states and 36796 transitions. [2018-07-24 11:56:39,038 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:56:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 26179 states and 36796 transitions. [2018-07-24 11:56:39,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-07-24 11:56:39,052 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:39,052 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:56:39,053 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:39,053 INFO L82 PathProgramCache]: Analyzing trace with hash 704237120, now seen corresponding path program 1 times [2018-07-24 11:56:39,053 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:39,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:39,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:39,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:39,054 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:39,677 WARN L169 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-07-24 11:56:40,043 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 11:56:40,224 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-07-24 11:56:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 48 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 11:56:40,346 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:56:40,346 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:56:40,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:40,362 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:56:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:40,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:56:41,452 WARN L169 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2018-07-24 11:56:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-07-24 11:56:41,554 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:56:42,044 WARN L169 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2018-07-24 11:56:42,204 WARN L169 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 11:56:42,399 WARN L169 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-07-24 11:56:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 48 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 11:56:43,421 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:56:43,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:56:43,421 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:43,422 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:56:43,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:56:43,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:56:43,423 INFO L87 Difference]: Start difference. First operand 26179 states and 36796 transitions. Second operand 5 states. [2018-07-24 11:57:01,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:57:01,901 INFO L93 Difference]: Finished difference Result 56498 states and 81330 transitions. [2018-07-24 11:57:01,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:57:01,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2018-07-24 11:57:01,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:02,029 INFO L225 Difference]: With dead ends: 56498 [2018-07-24 11:57:02,030 INFO L226 Difference]: Without dead ends: 30325 [2018-07-24 11:57:02,103 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 537 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:57:02,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30325 states. [2018-07-24 11:57:02,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30325 to 29607. [2018-07-24 11:57:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29607 states. [2018-07-24 11:57:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29607 states to 29607 states and 41558 transitions. [2018-07-24 11:57:02,792 INFO L78 Accepts]: Start accepts. Automaton has 29607 states and 41558 transitions. Word has length 271 [2018-07-24 11:57:02,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:02,792 INFO L471 AbstractCegarLoop]: Abstraction has 29607 states and 41558 transitions. [2018-07-24 11:57:02,792 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:57:02,793 INFO L276 IsEmpty]: Start isEmpty. Operand 29607 states and 41558 transitions. [2018-07-24 11:57:02,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-24 11:57:02,812 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:02,812 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:57:02,812 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:02,813 INFO L82 PathProgramCache]: Analyzing trace with hash 934776770, now seen corresponding path program 1 times [2018-07-24 11:57:02,813 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:02,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:02,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:02,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:02,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 129 proven. 75 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 11:57:03,375 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:57:03,375 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:57:03,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:03,391 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:57:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:03,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:57:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 11:57:04,446 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:57:04,650 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 11:57:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 58 proven. 215 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:57:05,807 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:57:05,807 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:57:05,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:05,826 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:57:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:06,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:57:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 259 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-07-24 11:57:06,496 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:57:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 129 proven. 75 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 11:57:06,695 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:57:06,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 5, 5] total 18 [2018-07-24 11:57:06,696 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:57:06,696 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 11:57:06,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 11:57:06,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:57:06,697 INFO L87 Difference]: Start difference. First operand 29607 states and 41558 transitions. Second operand 11 states. [2018-07-24 11:58:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:58:43,983 INFO L93 Difference]: Finished difference Result 141213 states and 364942 transitions. [2018-07-24 11:58:43,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-07-24 11:58:43,983 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 278 [2018-07-24 11:58:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:58:45,293 INFO L225 Difference]: With dead ends: 141213 [2018-07-24 11:58:45,293 INFO L226 Difference]: Without dead ends: 112417 [2018-07-24 11:58:46,657 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1203 SyntacticMatches, 5 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5767 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2594, Invalid=12658, Unknown=0, NotChecked=0, Total=15252 [2018-07-24 11:58:46,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112417 states. [2018-07-24 11:58:51,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112417 to 108511. [2018-07-24 11:58:51,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108511 states. [2018-07-24 11:58:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108511 states to 108511 states and 162072 transitions. [2018-07-24 11:58:51,530 INFO L78 Accepts]: Start accepts. Automaton has 108511 states and 162072 transitions. Word has length 278 [2018-07-24 11:58:51,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:58:51,530 INFO L471 AbstractCegarLoop]: Abstraction has 108511 states and 162072 transitions. [2018-07-24 11:58:51,530 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 11:58:51,530 INFO L276 IsEmpty]: Start isEmpty. Operand 108511 states and 162072 transitions. [2018-07-24 11:58:51,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-07-24 11:58:51,557 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:58:51,557 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:58:51,557 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:58:51,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1329295225, now seen corresponding path program 1 times [2018-07-24 11:58:51,558 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:58:51,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:51,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:51,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:51,559 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:58:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:51,918 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 Received shutdown request... [2018-07-24 11:58:52,447 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 11:58:52,447 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:58:52,447 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:58:52,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:52,464 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:58:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:52,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:58:52,642 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 11:58:52,843 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:58:52,843 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:58:52,848 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:58:52,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:58:52 BoogieIcfgContainer [2018-07-24 11:58:52,848 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:58:52,849 INFO L168 Benchmark]: Toolchain (without parser) took 238902.85 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -958.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-07-24 11:58:52,850 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 11:58:52,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2835.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 340.9 MB). Peak memory consumption was 340.9 MB. Max. memory is 7.1 GB. [2018-07-24 11:58:52,852 INFO L168 Benchmark]: Boogie Procedure Inliner took 347.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-24 11:58:52,854 INFO L168 Benchmark]: Boogie Preprocessor took 1186.36 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 11:58:52,857 INFO L168 Benchmark]: RCFGBuilder took 14611.73 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 149.9 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 93.9 MB). Peak memory consumption was 742.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:58:52,858 INFO L168 Benchmark]: TraceAbstraction took 219917.19 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -112.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 11:58:52,864 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2835.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 340.9 MB). Peak memory consumption was 340.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 347.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1186.36 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14611.73 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 149.9 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 93.9 MB). Peak memory consumption was 742.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219917.19 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -112.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 60). Cancelled while BasicCegarLoop was analyzing trace of length 330 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 219.8s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 198.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3737 SDtfs, 33176 SDslu, 6300 SDs, 0 SdLazy, 79538 SolverSat, 16237 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 167.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2276 GetRequests, 2099 SyntacticMatches, 12 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5822 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108511occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 5071 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 2094 NumberOfCodeBlocks, 2094 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3083 ConstructedInterpolants, 111 QuantifiedInterpolants, 3513237 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2012 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 1797/2596 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label04_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-58-52-879.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label04_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-58-52-879.csv Completed graceful shutdown