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/Problem19_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 15:08:28,022 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 15:08:28,024 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 15:08:28,037 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 15:08:28,037 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 15:08:28,038 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 15:08:28,039 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 15:08:28,041 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 15:08:28,043 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 15:08:28,044 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 15:08:28,045 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 15:08:28,045 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 15:08:28,046 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 15:08:28,047 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 15:08:28,048 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 15:08:28,049 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 15:08:28,050 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 15:08:28,052 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 15:08:28,054 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 15:08:28,056 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 15:08:28,057 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 15:08:28,058 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 15:08:28,061 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 15:08:28,061 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 15:08:28,061 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 15:08:28,062 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 15:08:28,064 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 15:08:28,065 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 15:08:28,065 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 15:08:28,067 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 15:08:28,067 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 15:08:28,068 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 15:08:28,068 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 15:08:28,068 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 15:08:28,069 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 15:08:28,070 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 15:08:28,070 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 15:08:28,091 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 15:08:28,093 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 15:08:28,094 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 15:08:28,097 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 15:08:28,097 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 15:08:28,097 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 15:08:28,098 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 15:08:28,098 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 15:08:28,098 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 15:08:28,098 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 15:08:28,098 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 15:08:28,099 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 15:08:28,099 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 15:08:28,100 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 15:08:28,100 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 15:08:28,100 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 15:08:28,100 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 15:08:28,101 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 15:08:28,101 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 15:08:28,102 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 15:08:28,102 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 15:08:28,102 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 15:08:28,102 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 15:08:28,103 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 15:08:28,103 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 15:08:28,103 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 15:08:28,103 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 15:08:28,103 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 15:08:28,104 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 15:08:28,104 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 15:08:28,104 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 15:08:28,104 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 15:08:28,104 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 15:08:28,172 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 15:08:28,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 15:08:28,190 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 15:08:28,192 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 15:08:28,192 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 15:08:28,193 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c [2018-07-24 15:08:28,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c085a885f/8a245fa593c04a99b65056638a708f36/FLAGdf819089d [2018-07-24 15:08:29,248 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 15:08:29,251 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label12_true-unreach-call.c [2018-07-24 15:08:29,319 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c085a885f/8a245fa593c04a99b65056638a708f36/FLAGdf819089d [2018-07-24 15:08:29,339 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c085a885f/8a245fa593c04a99b65056638a708f36 [2018-07-24 15:08:29,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 15:08:29,355 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 15:08:29,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 15:08:29,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 15:08:29,367 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 15:08:29,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:08:29" (1/1) ... [2018-07-24 15:08:29,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4f1318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:29, skipping insertion in model container [2018-07-24 15:08:29,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 03:08:29" (1/1) ... [2018-07-24 15:08:29,813 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 15:08:31,518 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:08:31,537 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 15:08:32,855 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 15:08:33,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:33 WrapperNode [2018-07-24 15:08:33,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 15:08:33,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 15:08:33,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 15:08:33,502 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 15:08:33,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:33" (1/1) ... [2018-07-24 15:08:33,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:33" (1/1) ... [2018-07-24 15:08:33,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 15:08:33,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 15:08:33,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 15:08:33,821 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 15:08:34,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:33" (1/1) ... [2018-07-24 15:08:34,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:33" (1/1) ... [2018-07-24 15:08:34,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:33" (1/1) ... [2018-07-24 15:08:34,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:33" (1/1) ... [2018-07-24 15:08:35,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:33" (1/1) ... [2018-07-24 15:08:35,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:33" (1/1) ... [2018-07-24 15:08:35,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:33" (1/1) ... [2018-07-24 15:08:35,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 15:08:35,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 15:08:35,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 15:08:35,589 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 15:08:35,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:33" (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 15:08:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 15:08:35,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 15:08:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5 [2018-07-24 15:08:35,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5 [2018-07-24 15:08:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 15:08:35,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 15:08:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output6 [2018-07-24 15:08:35,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output6 [2018-07-24 15:08:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 15:08:35,660 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 15:08:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 15:08:35,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 15:08:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 15:08:35,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 15:08:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 15:08:35,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 15:08:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 15:08:35,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 15:08:55,975 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 15:08:55,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:08:55 BoogieIcfgContainer [2018-07-24 15:08:55,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 15:08:55,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 15:08:55,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 15:08:55,980 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 15:08:55,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 03:08:29" (1/3) ... [2018-07-24 15:08:55,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d53ec87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:08:55, skipping insertion in model container [2018-07-24 15:08:55,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 03:08:33" (2/3) ... [2018-07-24 15:08:55,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d53ec87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 03:08:55, skipping insertion in model container [2018-07-24 15:08:55,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 03:08:55" (3/3) ... [2018-07-24 15:08:55,984 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label12_true-unreach-call.c [2018-07-24 15:08:55,994 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 15:08:56,003 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 15:08:56,072 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 15:08:56,073 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 15:08:56,073 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 15:08:56,073 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 15:08:56,073 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 15:08:56,073 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 15:08:56,073 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 15:08:56,073 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 15:08:56,074 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 15:08:56,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-24 15:08:56,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-24 15:08:56,140 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:08:56,142 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:08:56,142 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:08:56,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1929132848, now seen corresponding path program 1 times [2018-07-24 15:08:56,150 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:08:56,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:08:56,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:08:56,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:08:56,207 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:08:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:08:56,684 WARN L169 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:08:56,806 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 15:08:56,809 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:08:56,809 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 15:08:56,809 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:08:56,816 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:08:56,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:08:56,834 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:08:56,836 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-07-24 15:09:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:09:14,776 INFO L93 Difference]: Finished difference Result 5034 states and 9499 transitions. [2018-07-24 15:09:14,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:09:14,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-07-24 15:09:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:09:14,841 INFO L225 Difference]: With dead ends: 5034 [2018-07-24 15:09:14,841 INFO L226 Difference]: Without dead ends: 3254 [2018-07-24 15:09:14,858 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 15:09:14,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2018-07-24 15:09:15,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3207. [2018-07-24 15:09:15,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2018-07-24 15:09:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5994 transitions. [2018-07-24 15:09:15,087 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5994 transitions. Word has length 51 [2018-07-24 15:09:15,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:09:15,088 INFO L471 AbstractCegarLoop]: Abstraction has 3207 states and 5994 transitions. [2018-07-24 15:09:15,088 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:09:15,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5994 transitions. [2018-07-24 15:09:15,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-24 15:09:15,097 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:09:15,098 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:09:15,098 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:09:15,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1585075976, now seen corresponding path program 1 times [2018-07-24 15:09:15,098 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:09:15,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:09:15,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:09:15,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:09:15,100 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:09:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:09:15,455 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:09:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:09:15,837 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:09:15,837 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:09:15,837 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:09:15,839 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:09:15,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:09:15,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:09:15,841 INFO L87 Difference]: Start difference. First operand 3207 states and 5994 transitions. Second operand 6 states. [2018-07-24 15:09:45,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:09:45,508 INFO L93 Difference]: Finished difference Result 12119 states and 23174 transitions. [2018-07-24 15:09:45,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:09:45,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-07-24 15:09:45,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:09:45,553 INFO L225 Difference]: With dead ends: 12119 [2018-07-24 15:09:45,553 INFO L226 Difference]: Without dead ends: 8918 [2018-07-24 15:09:45,567 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 15:09:45,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8918 states. [2018-07-24 15:09:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8918 to 8850. [2018-07-24 15:09:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8850 states. [2018-07-24 15:09:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8850 states to 8850 states and 14414 transitions. [2018-07-24 15:09:45,838 INFO L78 Accepts]: Start accepts. Automaton has 8850 states and 14414 transitions. Word has length 124 [2018-07-24 15:09:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:09:45,839 INFO L471 AbstractCegarLoop]: Abstraction has 8850 states and 14414 transitions. [2018-07-24 15:09:45,840 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:09:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 8850 states and 14414 transitions. [2018-07-24 15:09:45,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-24 15:09:45,858 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:09:45,859 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 15:09:45,859 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:09:45,859 INFO L82 PathProgramCache]: Analyzing trace with hash 500941419, now seen corresponding path program 1 times [2018-07-24 15:09:45,861 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:09:45,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:09:45,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:09:45,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:09:45,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:09:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:09:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:09:46,193 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:09:46,194 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 15:09:46,194 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:09:46,194 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:09:46,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:09:46,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 15:09:46,195 INFO L87 Difference]: Start difference. First operand 8850 states and 14414 transitions. Second operand 5 states. [2018-07-24 15:10:11,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:10:11,956 INFO L93 Difference]: Finished difference Result 26936 states and 44671 transitions. [2018-07-24 15:10:11,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:10:11,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-07-24 15:10:11,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:10:12,030 INFO L225 Difference]: With dead ends: 26936 [2018-07-24 15:10:12,031 INFO L226 Difference]: Without dead ends: 18092 [2018-07-24 15:10:12,052 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 15:10:12,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18092 states. [2018-07-24 15:10:12,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18092 to 17802. [2018-07-24 15:10:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17802 states. [2018-07-24 15:10:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17802 states to 17802 states and 25732 transitions. [2018-07-24 15:10:12,463 INFO L78 Accepts]: Start accepts. Automaton has 17802 states and 25732 transitions. Word has length 138 [2018-07-24 15:10:12,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:10:12,464 INFO L471 AbstractCegarLoop]: Abstraction has 17802 states and 25732 transitions. [2018-07-24 15:10:12,464 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:10:12,464 INFO L276 IsEmpty]: Start isEmpty. Operand 17802 states and 25732 transitions. [2018-07-24 15:10:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-24 15:10:12,471 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:10:12,471 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 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 15:10:12,472 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:10:12,472 INFO L82 PathProgramCache]: Analyzing trace with hash 2131933398, now seen corresponding path program 1 times [2018-07-24 15:10:12,472 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:10:12,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:12,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:12,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:12,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:10:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:12,799 WARN L169 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:10:13,154 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 88 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 15:10:13,155 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:10:13,155 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 15:10:13,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:13,170 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:10:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:13,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:10:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-07-24 15:10:13,481 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:10:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-07-24 15:10:13,742 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:10:13,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-07-24 15:10:13,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:10:13,743 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 15:10:13,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 15:10:13,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-24 15:10:13,744 INFO L87 Difference]: Start difference. First operand 17802 states and 25732 transitions. Second operand 3 states. [2018-07-24 15:10:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:10:29,450 INFO L93 Difference]: Finished difference Result 52404 states and 77976 transitions. [2018-07-24 15:10:29,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 15:10:29,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2018-07-24 15:10:29,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:10:29,649 INFO L225 Difference]: With dead ends: 52404 [2018-07-24 15:10:29,649 INFO L226 Difference]: Without dead ends: 34608 [2018-07-24 15:10:29,726 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 424 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-24 15:10:29,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34608 states. [2018-07-24 15:10:30,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34608 to 34576. [2018-07-24 15:10:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34576 states. [2018-07-24 15:10:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34576 states to 34576 states and 46250 transitions. [2018-07-24 15:10:30,936 INFO L78 Accepts]: Start accepts. Automaton has 34576 states and 46250 transitions. Word has length 212 [2018-07-24 15:10:30,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:10:30,937 INFO L471 AbstractCegarLoop]: Abstraction has 34576 states and 46250 transitions. [2018-07-24 15:10:30,937 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 15:10:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 34576 states and 46250 transitions. [2018-07-24 15:10:30,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-07-24 15:10:30,962 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:10:30,962 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:10:30,963 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:10:30,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1744188368, now seen corresponding path program 1 times [2018-07-24 15:10:30,963 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:10:30,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:30,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:10:30,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:10:30,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:10:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:10:31,624 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 15:10:31,624 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 15:10:31,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 15:10:31,625 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:10:31,625 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 15:10:31,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 15:10:31,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 15:10:31,626 INFO L87 Difference]: Start difference. First operand 34576 states and 46250 transitions. Second operand 6 states. [2018-07-24 15:11:03,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:11:03,178 INFO L93 Difference]: Finished difference Result 104524 states and 143952 transitions. [2018-07-24 15:11:03,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 15:11:03,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 304 [2018-07-24 15:11:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:11:03,401 INFO L225 Difference]: With dead ends: 104524 [2018-07-24 15:11:03,401 INFO L226 Difference]: Without dead ends: 69954 [2018-07-24 15:11:03,454 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 15:11:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69954 states. [2018-07-24 15:11:04,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69954 to 69448. [2018-07-24 15:11:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69448 states. [2018-07-24 15:11:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69448 states to 69448 states and 91276 transitions. [2018-07-24 15:11:04,662 INFO L78 Accepts]: Start accepts. Automaton has 69448 states and 91276 transitions. Word has length 304 [2018-07-24 15:11:04,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:11:04,663 INFO L471 AbstractCegarLoop]: Abstraction has 69448 states and 91276 transitions. [2018-07-24 15:11:04,663 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 15:11:04,664 INFO L276 IsEmpty]: Start isEmpty. Operand 69448 states and 91276 transitions. [2018-07-24 15:11:04,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-07-24 15:11:04,688 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:11:04,688 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 15:11:04,689 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:11:04,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1126313570, now seen corresponding path program 1 times [2018-07-24 15:11:04,689 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:11:04,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:11:04,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:11:04,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:11:04,691 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:11:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:11:05,035 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 15:11:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 132 proven. 183 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-07-24 15:11:05,199 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:11:05,199 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 15:11:05,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:11:05,207 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:11:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:11:05,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:11:05,632 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-07-24 15:11:05,632 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:11:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 132 proven. 183 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-07-24 15:11:05,957 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 15:11:05,957 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 15:11:05,958 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 15:11:05,958 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 15:11:05,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 15:11:05,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-07-24 15:11:05,959 INFO L87 Difference]: Start difference. First operand 69448 states and 91276 transitions. Second operand 5 states. [2018-07-24 15:11:30,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:11:30,169 INFO L93 Difference]: Finished difference Result 165820 states and 226088 transitions. [2018-07-24 15:11:30,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 15:11:30,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 409 [2018-07-24 15:11:30,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:11:30,464 INFO L225 Difference]: With dead ends: 165820 [2018-07-24 15:11:30,464 INFO L226 Difference]: Without dead ends: 96378 [2018-07-24 15:11:30,581 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 812 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-07-24 15:11:30,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96378 states. [2018-07-24 15:11:32,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96378 to 95750. [2018-07-24 15:11:32,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95750 states. [2018-07-24 15:11:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95750 states to 95750 states and 124996 transitions. [2018-07-24 15:11:32,823 INFO L78 Accepts]: Start accepts. Automaton has 95750 states and 124996 transitions. Word has length 409 [2018-07-24 15:11:32,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:11:32,823 INFO L471 AbstractCegarLoop]: Abstraction has 95750 states and 124996 transitions. [2018-07-24 15:11:32,823 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 15:11:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 95750 states and 124996 transitions. [2018-07-24 15:11:32,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2018-07-24 15:11:32,903 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:11:32,904 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:11:32,904 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:11:32,904 INFO L82 PathProgramCache]: Analyzing trace with hash 2005680203, now seen corresponding path program 1 times [2018-07-24 15:11:32,905 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:11:32,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:11:32,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:11:32,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:11:32,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:11:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:11:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 347 proven. 250 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-07-24 15:11:33,843 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:11:33,843 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 15:11:33,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:11:33,852 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:11:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:11:34,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:11:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 760 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-07-24 15:11:35,586 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:11:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 347 proven. 250 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-07-24 15:11:36,715 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:11:36,715 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 15:11:36,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:11:36,731 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:11:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:11:37,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:11:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 760 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-07-24 15:11:39,561 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 15:11:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 347 proven. 250 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-07-24 15:11:40,766 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 15:11:40,767 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 15:11:40,768 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 15:11:40,769 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 15:11:40,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 15:11:40,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-07-24 15:11:40,770 INFO L87 Difference]: Start difference. First operand 95750 states and 124996 transitions. Second operand 9 states. [2018-07-24 15:12:15,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 15:12:15,212 INFO L93 Difference]: Finished difference Result 224657 states and 305719 transitions. [2018-07-24 15:12:15,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 15:12:15,212 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1144 [2018-07-24 15:12:15,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 15:12:15,691 INFO L225 Difference]: With dead ends: 224657 [2018-07-24 15:12:15,691 INFO L226 Difference]: Without dead ends: 128884 [2018-07-24 15:12:15,935 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4594 GetRequests, 4572 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2018-07-24 15:12:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128884 states. [2018-07-24 15:12:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128884 to 124759. [2018-07-24 15:12:17,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124759 states. [2018-07-24 15:12:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124759 states to 124759 states and 152735 transitions. [2018-07-24 15:12:17,976 INFO L78 Accepts]: Start accepts. Automaton has 124759 states and 152735 transitions. Word has length 1144 [2018-07-24 15:12:17,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 15:12:17,977 INFO L471 AbstractCegarLoop]: Abstraction has 124759 states and 152735 transitions. [2018-07-24 15:12:17,977 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 15:12:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 124759 states and 152735 transitions. [2018-07-24 15:12:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1194 [2018-07-24 15:12:18,028 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 15:12:18,029 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:12:18,029 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 15:12:18,030 INFO L82 PathProgramCache]: Analyzing trace with hash -2143725969, now seen corresponding path program 1 times [2018-07-24 15:12:18,030 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 15:12:18,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:12:18,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:12:18,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 15:12:18,031 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 15:12:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:12:19,490 WARN L169 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-07-24 15:12:19,858 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 Received shutdown request... [2018-07-24 15:12:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 557 proven. 485 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2018-07-24 15:12:22,084 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 15:12:22,084 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 15:12:22,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 15:12:22,094 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 15:12:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 15:12:22,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 15:12:22,529 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 15:12:22,731 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 15:12:22,731 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 15:12:22,737 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 15:12:22,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 03:12:22 BoogieIcfgContainer [2018-07-24 15:12:22,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 15:12:22,738 INFO L168 Benchmark]: Toolchain (without parser) took 233384.77 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-07-24 15:12:22,739 INFO L168 Benchmark]: CDTParser took 0.24 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 15:12:22,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4144.49 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 207.1 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -127.1 MB). Peak memory consumption was 489.2 MB. Max. memory is 7.1 GB. [2018-07-24 15:12:22,741 INFO L168 Benchmark]: Boogie Procedure Inliner took 318.97 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-07-24 15:12:22,742 INFO L168 Benchmark]: Boogie Preprocessor took 1767.08 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 834.7 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -858.3 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-07-24 15:12:22,743 INFO L168 Benchmark]: RCFGBuilder took 20387.77 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 282.1 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 245.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-24 15:12:22,745 INFO L168 Benchmark]: TraceAbstraction took 206760.43 ms. Allocated memory was 2.8 GB in the beginning and 3.7 GB in the end (delta: 875.6 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -121.3 MB). Peak memory consumption was 754.3 MB. Max. memory is 7.1 GB. [2018-07-24 15:12:22,752 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 4144.49 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 207.1 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -127.1 MB). Peak memory consumption was 489.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 318.97 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1767.08 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 834.7 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -858.3 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 20387.77 ms. Allocated memory was 2.6 GB in the beginning and 2.8 GB in the end (delta: 282.1 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 245.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 206760.43 ms. Allocated memory was 2.8 GB in the beginning and 3.7 GB in the end (delta: 875.6 MB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -121.3 MB). Peak memory consumption was 754.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 148). Cancelled while BasicCegarLoop was analyzing trace of length 1194 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 206.6s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 181.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4979 SDtfs, 40721 SDslu, 5067 SDs, 0 SdLazy, 67284 SolverSat, 19172 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 155.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5885 GetRequests, 5819 SyntacticMatches, 9 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124759occurred 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: 7.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 5696 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 5291 NumberOfCodeBlocks, 5291 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 8185 ConstructedInterpolants, 0 QuantifiedInterpolants, 12092652 SizeOfPredicates, 4 NumberOfNonLiveVariables, 4005 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 4694/5883 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/Problem19_label12_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_15-12-22-778.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label12_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_15-12-22-778.csv Completed graceful shutdown