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/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label47_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:12:28,812 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:12:28,814 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:12:28,832 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:12:28,832 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:12:28,834 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:12:28,835 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:12:28,837 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:12:28,838 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:12:28,839 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:12:28,840 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:12:28,840 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:12:28,841 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:12:28,842 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:12:28,843 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:12:28,844 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:12:28,845 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:12:28,847 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:12:28,849 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:12:28,854 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:12:28,856 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:12:28,858 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:12:28,860 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 20:12:28,860 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 20:12:28,861 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 20:12:28,862 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 20:12:28,862 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 20:12:28,863 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 20:12:28,864 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 20:12:28,865 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 20:12:28,865 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 20:12:28,866 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 20:12:28,866 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 20:12:28,867 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 20:12:28,868 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 20:12:28,869 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 20:12:28,870 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 20:12:28,899 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:12:28,899 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:12:28,900 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:12:28,901 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:12:28,901 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:12:28,901 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:12:28,901 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:12:28,904 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:12:28,904 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:12:28,904 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:12:28,904 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:12:28,905 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:12:28,906 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:12:28,906 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:12:28,906 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:12:28,907 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:12:28,907 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:12:28,907 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:12:28,908 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:12:28,908 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:12:28,908 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:12:28,908 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:12:28,908 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:12:28,909 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:12:28,909 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:12:28,909 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:12:28,909 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:12:28,911 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:12:28,911 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:12:28,911 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:12:28,911 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:12:28,911 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:12:28,912 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:12:28,969 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:12:28,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:12:28,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:12:28,992 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:12:28,992 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:12:28,993 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label47_false-unreach-call.c [2018-07-23 20:12:29,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abb38c98d/0a4b070e45ec41ac8f8021d25db89f0b/FLAGd0f5e9c66 [2018-07-23 20:12:29,939 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:12:29,941 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label47_false-unreach-call.c [2018-07-23 20:12:29,992 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abb38c98d/0a4b070e45ec41ac8f8021d25db89f0b/FLAGd0f5e9c66 [2018-07-23 20:12:30,013 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abb38c98d/0a4b070e45ec41ac8f8021d25db89f0b [2018-07-23 20:12:30,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:12:30,028 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:12:30,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:12:30,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:12:30,038 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:12:30,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:12:30" (1/1) ... [2018-07-23 20:12:30,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d65a7e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:30, skipping insertion in model container [2018-07-23 20:12:30,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:12:30" (1/1) ... [2018-07-23 20:12:30,562 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:12:32,350 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:12:32,371 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:12:33,596 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:12:34,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:34 WrapperNode [2018-07-23 20:12:34,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:12:34,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:12:34,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:12:34,108 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:12:34,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:34" (1/1) ... [2018-07-23 20:12:34,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:34" (1/1) ... [2018-07-23 20:12:34,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:12:34,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:12:34,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:12:34,467 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:12:35,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:34" (1/1) ... [2018-07-23 20:12:35,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:34" (1/1) ... [2018-07-23 20:12:35,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:34" (1/1) ... [2018-07-23 20:12:35,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:34" (1/1) ... [2018-07-23 20:12:35,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:34" (1/1) ... [2018-07-23 20:12:36,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:34" (1/1) ... [2018-07-23 20:12:36,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:34" (1/1) ... [2018-07-23 20:12:36,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:12:36,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:12:36,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:12:36,369 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:12:36,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:34" (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 [2018-07-23 20:12:36,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:12:36,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:12:36,422 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 [2018-07-23 20:12:36,422 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 [2018-07-23 20:12:36,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:12:36,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:12:36,422 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_output5 [2018-07-23 20:12:36,423 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_output5 [2018-07-23 20:12:36,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:12:36,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:12:36,423 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 [2018-07-23 20:12:36,423 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 [2018-07-23 20:12:36,423 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 [2018-07-23 20:12:36,424 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 [2018-07-23 20:12:36,424 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_output6 [2018-07-23 20:12:36,424 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_output6 [2018-07-23 20:12:36,424 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 [2018-07-23 20:12:36,424 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 [2018-07-23 20:12:56,858 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:12:56,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:12:56 BoogieIcfgContainer [2018-07-23 20:12:56,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:12:56,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:12:56,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:12:56,864 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:12:56,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:12:30" (1/3) ... [2018-07-23 20:12:56,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9760ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:12:56, skipping insertion in model container [2018-07-23 20:12:56,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:12:34" (2/3) ... [2018-07-23 20:12:56,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d9760ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:12:56, skipping insertion in model container [2018-07-23 20:12:56,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:12:56" (3/3) ... [2018-07-23 20:12:56,868 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label47_false-unreach-call.c [2018-07-23 20:12:56,879 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:12:56,891 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:12:56,977 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:12:56,978 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:12:56,978 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:12:56,978 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:12:56,978 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:12:56,978 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:12:56,979 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:12:56,980 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:12:56,980 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:12:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-23 20:12:57,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-23 20:12:57,056 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:12:57,057 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:12:57,058 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]=== [2018-07-23 20:12:57,064 INFO L82 PathProgramCache]: Analyzing trace with hash -844131120, now seen corresponding path program 1 times [2018-07-23 20:12:57,067 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:12:57,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:12:57,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:12:57,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:12:57,115 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:12:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:12:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:12:57,490 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:12:57,491 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 20:12:57,491 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:12:57,497 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 20:12:57,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 20:12:57,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 20:12:57,521 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-07-23 20:13:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:13:26,851 INFO L93 Difference]: Finished difference Result 6465 states and 12332 transitions. [2018-07-23 20:13:26,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 20:13:26,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-07-23 20:13:26,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:13:26,908 INFO L225 Difference]: With dead ends: 6465 [2018-07-23 20:13:26,908 INFO L226 Difference]: Without dead ends: 4681 [2018-07-23 20:13:26,922 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 20:13:26,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2018-07-23 20:13:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200. [2018-07-23 20:13:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2018-07-23 20:13:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions. [2018-07-23 20:13:27,163 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 15 [2018-07-23 20:13:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:13:27,164 INFO L471 AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions. [2018-07-23 20:13:27,164 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 20:13:27,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions. [2018-07-23 20:13:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-07-23 20:13:27,172 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:13:27,172 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:13:27,173 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]=== [2018-07-23 20:13:27,173 INFO L82 PathProgramCache]: Analyzing trace with hash 965300282, now seen corresponding path program 1 times [2018-07-23 20:13:27,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:13:27,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:13:27,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:13:27,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:13:27,176 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:13:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:13:27,589 WARN L169 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:13:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:13:27,963 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:13:27,963 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:13:27,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:13:27,965 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:13:27,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:13:27,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:13:27,966 INFO L87 Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states. [2018-07-23 20:14:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:14:00,805 INFO L93 Difference]: Finished difference Result 12097 states and 19723 transitions. [2018-07-23 20:14:00,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:14:00,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2018-07-23 20:14:00,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:14:00,865 INFO L225 Difference]: With dead ends: 12097 [2018-07-23 20:14:00,866 INFO L226 Difference]: Without dead ends: 8903 [2018-07-23 20:14:00,882 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 20:14:00,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2018-07-23 20:14:01,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 8846. [2018-07-23 20:14:01,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8846 states. [2018-07-23 20:14:01,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 12708 transitions. [2018-07-23 20:14:01,143 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 12708 transitions. Word has length 87 [2018-07-23 20:14:01,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:14:01,144 INFO L471 AbstractCegarLoop]: Abstraction has 8846 states and 12708 transitions. [2018-07-23 20:14:01,144 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:14:01,144 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 12708 transitions. [2018-07-23 20:14:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-23 20:14:01,148 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:14:01,148 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:14:01,148 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]=== [2018-07-23 20:14:01,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1048200451, now seen corresponding path program 1 times [2018-07-23 20:14:01,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:14:01,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:01,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:14:01,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:01,150 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:14:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:14:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:14:01,409 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:14:01,409 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:14:01,409 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:14:01,410 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:14:01,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:14:01,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:14:01,411 INFO L87 Difference]: Start difference. First operand 8846 states and 12708 transitions. Second operand 6 states. [2018-07-23 20:14:32,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:14:32,404 INFO L93 Difference]: Finished difference Result 26860 states and 39142 transitions. [2018-07-23 20:14:32,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 20:14:32,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-07-23 20:14:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:14:32,501 INFO L225 Difference]: With dead ends: 26860 [2018-07-23 20:14:32,501 INFO L226 Difference]: Without dead ends: 18020 [2018-07-23 20:14:32,535 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 20:14:32,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18020 states. [2018-07-23 20:14:32,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18020 to 17848. [2018-07-23 20:14:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17848 states. [2018-07-23 20:14:33,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17848 states to 17848 states and 25190 transitions. [2018-07-23 20:14:33,013 INFO L78 Accepts]: Start accepts. Automaton has 17848 states and 25190 transitions. Word has length 89 [2018-07-23 20:14:33,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:14:33,013 INFO L471 AbstractCegarLoop]: Abstraction has 17848 states and 25190 transitions. [2018-07-23 20:14:33,014 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:14:33,014 INFO L276 IsEmpty]: Start isEmpty. Operand 17848 states and 25190 transitions. [2018-07-23 20:14:33,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-07-23 20:14:33,017 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:14:33,017 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:14:33,017 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]=== [2018-07-23 20:14:33,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1132774610, now seen corresponding path program 1 times [2018-07-23 20:14:33,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:14:33,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:33,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:14:33,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:14:33,019 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:14:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:14:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:14:33,383 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:14:33,383 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:14:33,384 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:14:33,384 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:14:33,385 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:14:33,386 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:14:33,386 INFO L87 Difference]: Start difference. First operand 17848 states and 25190 transitions. Second operand 5 states. [2018-07-23 20:15:06,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:15:06,615 INFO L93 Difference]: Finished difference Result 54319 states and 78113 transitions. [2018-07-23 20:15:06,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 20:15:06,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-07-23 20:15:06,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:15:06,779 INFO L225 Difference]: With dead ends: 54319 [2018-07-23 20:15:06,779 INFO L226 Difference]: Without dead ends: 36477 [2018-07-23 20:15:06,854 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 20:15:06,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36477 states. [2018-07-23 20:15:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36477 to 35855. [2018-07-23 20:15:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35855 states. [2018-07-23 20:15:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35855 states to 35855 states and 46230 transitions. [2018-07-23 20:15:07,749 INFO L78 Accepts]: Start accepts. Automaton has 35855 states and 46230 transitions. Word has length 117 [2018-07-23 20:15:07,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:15:07,750 INFO L471 AbstractCegarLoop]: Abstraction has 35855 states and 46230 transitions. [2018-07-23 20:15:07,750 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:15:07,750 INFO L276 IsEmpty]: Start isEmpty. Operand 35855 states and 46230 transitions. [2018-07-23 20:15:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-07-23 20:15:07,761 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:15:07,761 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:15:07,762 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]=== [2018-07-23 20:15:07,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1290853965, now seen corresponding path program 1 times [2018-07-23 20:15:07,763 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:15:07,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:15:07,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:15:07,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:15:07,764 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:15:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:15:08,136 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:15:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:15:08,574 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:15:08,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:15:08,575 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:15:08,576 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:15:08,576 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:15:08,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:15:08,576 INFO L87 Difference]: Start difference. First operand 35855 states and 46230 transitions. Second operand 6 states. [2018-07-23 20:15:32,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:15:32,704 INFO L93 Difference]: Finished difference Result 86963 states and 115680 transitions. [2018-07-23 20:15:32,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:15:32,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-07-23 20:15:32,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:15:32,920 INFO L225 Difference]: With dead ends: 86963 [2018-07-23 20:15:32,920 INFO L226 Difference]: Without dead ends: 51114 [2018-07-23 20:15:33,006 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 20:15:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51114 states. [2018-07-23 20:15:33,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51114 to 50760. [2018-07-23 20:15:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50760 states. [2018-07-23 20:15:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50760 states to 50760 states and 65403 transitions. [2018-07-23 20:15:34,062 INFO L78 Accepts]: Start accepts. Automaton has 50760 states and 65403 transitions. Word has length 180 [2018-07-23 20:15:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:15:34,063 INFO L471 AbstractCegarLoop]: Abstraction has 50760 states and 65403 transitions. [2018-07-23 20:15:34,063 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:15:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 50760 states and 65403 transitions. [2018-07-23 20:15:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-07-23 20:15:34,075 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:15:34,075 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:15:34,076 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]=== [2018-07-23 20:15:34,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1217039119, now seen corresponding path program 1 times [2018-07-23 20:15:34,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:15:34,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:15:34,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:15:34,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:15:34,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:15:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:15:34,577 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:15:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-23 20:15:34,750 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:15:34,750 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:15:34,751 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 503 with the following transitions: [2018-07-23 20:15:34,755 INFO L201 CegarAbsIntRunner]: [0], [1], [2158], [2162], [2168], [2172], [2174], [2179], [2183], [2187], [2191], [2195], [2199], [2203], [2207], [2211], [2215], [2219], [2223], [2227], [2231], [2235], [2239], [2243], [2247], [2251], [2262], [2273], [2277], [2281], [2292], [2296], [2300], [2304], [2308], [2312], [2316], [2320], [2324], [2328], [2332], [2336], [2340], [2344], [2348], [2352], [2356], [2360], [2364], [2368], [2379], [2383], [2387], [2391], [2395], [2399], [2403], [2414], [2418], [2422], [2426], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2536], [2540], [2544], [2548], [2552], [2556], [2560], [2564], [2568], [2572], [2576], [2580], [2584], [2588], [2592], [2603], [2607], [2611], [2615], [2619], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2673], [2677], [2681], [2692], [2696], [2700], [2704], [2708], [2712], [2716], [2720], [2724], [2728], [2732], [2736], [2747], [2751], [2755], [2759], [2763], [2767], [2771], [2775], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2841], [2845], [2856], [2860], [2864], [2868], [2879], [2883], [2887], [2891], [2895], [2899], [2903], [2907], [2918], [2922], [2926], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2997], [3001], [3005], [3009], [3013], [3017], [3021], [3025], [3029], [3033], [3037], [3041], [3045], [3049], [3053], [3057], [3061], [3065], [3069], [3073], [3076], [3209], [5251], [5258], [5266], [5270], [5272], [5275], [5283], [5291], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5723], [5731], [5739], [5751], [5755], [5766], [5770], [5774], [5778], [5782], [5786], [5790], [5794], [5798], [5802], [5806], [5810], [5821], [5832], [5843], [5847], [5851], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5970], [5974], [5978], [5982], [5986], [5990], [6001], [6005], [6009], [6020], [6024], [6028], [6032], [6036], [6040], [6044], [6048], [6052], [6056], [6060], [6064], [6075], [6079], [6083], [6087], [6091], [6095], [6099], [6103], [6107], [6111], [6115], [6126], [6130], [6134], [6145], [6149], [6153], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6244], [6248], [6252], [6256], [6260], [6264], [6275], [6279], [6283], [6287], [6291], [6302], [6306], [6310], [6314], [6318], [6322], [6326], [6330], [6334], [6338], [6349], [6353], [6357], [6368], [6372], [6376], [6380], [6384], [6395], [6399], [6403], [6407], [6411], [6415], [6426], [6437], [6441], [6445], [6449], [6453], [6464], [6468], [6479], [6483], [6487], [6491], [6495], [6499], [6510], [6514], [6518], [6522], [6526], [6530], [6534], [6538], [6549], [6553], [6557], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6597], [6601], [6605], [6609], [6613], [6617], [6628], [6632], [6643], [6647], [6658], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6705], [6709], [6713], [6717], [6721], [6725], [6736], [6740], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6803], [6807], [6811], [6815], [6819], [6823], [6825], [6826], [6829], [6830], [6831], [6835], [6836], [6841], [6842] [2018-07-23 20:15:34,868 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:15:34,868 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2)