java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:17:53,015 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:17:53,017 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:17:53,030 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:17:53,030 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:17:53,031 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:17:53,032 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:17:53,034 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:17:53,036 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:17:53,037 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:17:53,038 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:17:53,038 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:17:53,039 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:17:53,040 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:17:53,041 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:17:53,042 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:17:53,043 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:17:53,047 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:17:53,049 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:17:53,053 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:17:53,056 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:17:53,058 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:17:53,060 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:17:53,060 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:17:53,060 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:17:53,063 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:17:53,064 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:17:53,065 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:17:53,068 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:17:53,070 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:17:53,070 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:17:53,071 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:17:53,071 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:17:53,071 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:17:53,075 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:17:53,075 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:17:53,076 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 14:17:53,106 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:17:53,106 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:17:53,107 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:17:53,107 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:17:53,108 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:17:53,108 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:17:53,108 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:17:53,111 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:17:53,111 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:17:53,111 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:17:53,111 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:17:53,112 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:17:53,113 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:17:53,113 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:17:53,113 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:17:53,115 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:17:53,115 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:17:53,115 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:17:53,115 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:17:53,116 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:17:53,116 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:17:53,116 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:17:53,116 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:17:53,117 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:17:53,117 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:17:53,117 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:17:53,117 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:17:53,117 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:17:53,118 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:17:53,118 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:17:53,118 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:17:53,119 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:17:53,119 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:17:53,183 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:17:53,195 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:17:53,199 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:17:53,201 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:17:53,201 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:17:53,202 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c [2018-07-24 14:17:53,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b4b86c3b/10e6feb3a7bd4f0c842092af0b6de01f/FLAGeb92cbe2e [2018-07-24 14:17:54,105 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:17:54,106 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label14_true-unreach-call.c [2018-07-24 14:17:54,155 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b4b86c3b/10e6feb3a7bd4f0c842092af0b6de01f/FLAGeb92cbe2e [2018-07-24 14:17:54,180 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b4b86c3b/10e6feb3a7bd4f0c842092af0b6de01f [2018-07-24 14:17:54,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:17:54,198 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:17:54,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:17:54,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:17:54,208 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:17:54,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:17:54" (1/1) ... [2018-07-24 14:17:54,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37282a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:54, skipping insertion in model container [2018-07-24 14:17:54,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:17:54" (1/1) ... [2018-07-24 14:17:54,560 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:17:55,705 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:17:55,726 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:17:56,532 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:17:56,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:56 WrapperNode [2018-07-24 14:17:56,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:17:56,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:17:56,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:17:56,941 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:17:56,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:56" (1/1) ... [2018-07-24 14:17:57,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:56" (1/1) ... [2018-07-24 14:17:57,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:17:57,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:17:57,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:17:57,274 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:17:58,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:56" (1/1) ... [2018-07-24 14:17:58,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:56" (1/1) ... [2018-07-24 14:17:58,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:56" (1/1) ... [2018-07-24 14:17:58,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:56" (1/1) ... [2018-07-24 14:17:58,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:56" (1/1) ... [2018-07-24 14:17:58,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:56" (1/1) ... [2018-07-24 14:17:58,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:56" (1/1) ... [2018-07-24 14:17:58,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:17:58,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:17:58,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:17:58,553 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:17:58,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:17:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:17:58,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:17:58,628 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 14:17:58,629 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 14:17:58,629 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 14:17:58,629 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 14:17:58,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:17:58,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:17:58,629 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 14:17:58,630 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 14:17:58,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:17:58,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:17:58,630 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 14:17:58,630 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 14:18:12,550 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:18:12,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:18:12 BoogieIcfgContainer [2018-07-24 14:18:12,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:18:12,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:18:12,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:18:12,555 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:18:12,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:17:54" (1/3) ... [2018-07-24 14:18:12,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4530ae73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:18:12, skipping insertion in model container [2018-07-24 14:18:12,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:17:56" (2/3) ... [2018-07-24 14:18:12,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4530ae73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:18:12, skipping insertion in model container [2018-07-24 14:18:12,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:18:12" (3/3) ... [2018-07-24 14:18:12,559 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label14_true-unreach-call.c [2018-07-24 14:18:12,568 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:18:12,579 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:18:12,641 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:18:12,642 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:18:12,642 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:18:12,642 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:18:12,642 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:18:12,643 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:18:12,643 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:18:12,643 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:18:12,643 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:18:12,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 14:18:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-07-24 14:18:12,690 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:18:12,691 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] [2018-07-24 14:18:12,691 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 14:18:12,697 INFO L82 PathProgramCache]: Analyzing trace with hash -542308180, now seen corresponding path program 1 times [2018-07-24 14:18:12,700 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:18:12,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:18:12,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:18:12,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:18:12,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:18:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:18:13,250 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:18:13,352 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 14:18:13,354 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:18:13,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:18:13,355 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:18:13,361 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:18:13,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:18:13,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:18:13,379 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-07-24 14:18:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:18:23,405 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-07-24 14:18:23,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:18:23,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-07-24 14:18:23,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:18:23,445 INFO L225 Difference]: With dead ends: 3097 [2018-07-24 14:18:23,445 INFO L226 Difference]: Without dead ends: 1975 [2018-07-24 14:18:23,457 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:18:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-07-24 14:18:23,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-07-24 14:18:23,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-07-24 14:18:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-07-24 14:18:23,612 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 48 [2018-07-24 14:18:23,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:18:23,613 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-07-24 14:18:23,613 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:18:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-07-24 14:18:23,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-07-24 14:18:23,627 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:18:23,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:23,628 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 14:18:23,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1400276964, now seen corresponding path program 1 times [2018-07-24 14:18:23,629 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:18:23,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:18:23,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:18:23,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:18:23,631 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:18:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:18:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:18:23,907 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:18:23,907 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:18:23,907 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:18:23,909 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:18:23,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:18:23,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:18:23,910 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-07-24 14:18:44,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:18:44,391 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-07-24 14:18:44,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:18:44,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-07-24 14:18:44,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:18:44,420 INFO L225 Difference]: With dead ends: 5736 [2018-07-24 14:18:44,420 INFO L226 Difference]: Without dead ends: 3768 [2018-07-24 14:18:44,428 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 [2018-07-24 14:18:44,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-07-24 14:18:44,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-07-24 14:18:44,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-07-24 14:18:44,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-07-24 14:18:44,546 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 124 [2018-07-24 14:18:44,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:18:44,546 INFO L471 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-07-24 14:18:44,547 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:18:44,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-07-24 14:18:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-24 14:18:44,552 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:18:44,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:18:44,552 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 14:18:44,553 INFO L82 PathProgramCache]: Analyzing trace with hash -779637696, now seen corresponding path program 1 times [2018-07-24 14:18:44,553 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:18:44,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:18:44,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:18:44,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:18:44,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:18:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:18:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:18:44,801 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:18:44,801 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:18:44,801 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:18:44,802 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:18:44,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:18:44,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:18:44,802 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-07-24 14:19:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:19:05,288 INFO L93 Difference]: Finished difference Result 12385 states and 19155 transitions. [2018-07-24 14:19:05,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:19:05,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-07-24 14:19:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:19:05,335 INFO L225 Difference]: With dead ends: 12385 [2018-07-24 14:19:05,335 INFO L226 Difference]: Without dead ends: 8705 [2018-07-24 14:19:05,353 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 [2018-07-24 14:19:05,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8705 states. [2018-07-24 14:19:05,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8705 to 8670. [2018-07-24 14:19:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8670 states. [2018-07-24 14:19:05,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8670 states to 8670 states and 12398 transitions. [2018-07-24 14:19:05,563 INFO L78 Accepts]: Start accepts. Automaton has 8670 states and 12398 transitions. Word has length 138 [2018-07-24 14:19:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:19:05,564 INFO L471 AbstractCegarLoop]: Abstraction has 8670 states and 12398 transitions. [2018-07-24 14:19:05,564 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:19:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 8670 states and 12398 transitions. [2018-07-24 14:19:05,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-07-24 14:19:05,568 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:19:05,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:19:05,568 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 14:19:05,569 INFO L82 PathProgramCache]: Analyzing trace with hash 681019980, now seen corresponding path program 1 times [2018-07-24 14:19:05,569 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:19:05,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:19:05,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:19:05,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:19:05,570 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:19:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:19:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:19:05,740 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:19:05,740 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:19:05,740 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:19:05,741 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:19:05,741 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:19:05,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:19:05,741 INFO L87 Difference]: Start difference. First operand 8670 states and 12398 transitions. Second operand 4 states. [2018-07-24 14:19:19,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:19:19,375 INFO L93 Difference]: Finished difference Result 33583 states and 50476 transitions. [2018-07-24 14:19:19,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:19:19,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2018-07-24 14:19:19,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:19:19,481 INFO L225 Difference]: With dead ends: 33583 [2018-07-24 14:19:19,482 INFO L226 Difference]: Without dead ends: 24919 [2018-07-24 14:19:19,531 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:19:19,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24919 states. [2018-07-24 14:19:20,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24919 to 24886. [2018-07-24 14:19:20,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24886 states. [2018-07-24 14:19:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24886 states to 24886 states and 34277 transitions. [2018-07-24 14:19:20,121 INFO L78 Accepts]: Start accepts. Automaton has 24886 states and 34277 transitions. Word has length 164 [2018-07-24 14:19:20,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:19:20,121 INFO L471 AbstractCegarLoop]: Abstraction has 24886 states and 34277 transitions. [2018-07-24 14:19:20,121 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:19:20,121 INFO L276 IsEmpty]: Start isEmpty. Operand 24886 states and 34277 transitions. [2018-07-24 14:19:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-07-24 14:19:20,132 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:19:20,132 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:19:20,133 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 14:19:20,133 INFO L82 PathProgramCache]: Analyzing trace with hash 476307678, now seen corresponding path program 1 times [2018-07-24 14:19:20,133 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:19:20,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:19:20,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:19:20,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:19:20,135 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:19:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:19:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 159 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:19:21,490 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:19:21,491 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 14:19:21,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:19:21,500 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:19:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:19:21,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:19:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:19:21,859 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:19:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:19:22,211 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:19:22,211 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2018-07-24 14:19:22,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:19:22,212 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:19:22,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:19:22,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:19:22,213 INFO L87 Difference]: Start difference. First operand 24886 states and 34277 transitions. Second operand 3 states. [2018-07-24 14:19:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:19:31,340 INFO L93 Difference]: Finished difference Result 66934 states and 97401 transitions. [2018-07-24 14:19:31,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:19:31,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 259 [2018-07-24 14:19:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:19:31,791 INFO L225 Difference]: With dead ends: 66934 [2018-07-24 14:19:31,792 INFO L226 Difference]: Without dead ends: 42054 [2018-07-24 14:19:31,921 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 517 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:19:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42054 states. [2018-07-24 14:19:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42054 to 42053. [2018-07-24 14:19:32,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42053 states. [2018-07-24 14:19:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42053 states to 42053 states and 58989 transitions. [2018-07-24 14:19:32,874 INFO L78 Accepts]: Start accepts. Automaton has 42053 states and 58989 transitions. Word has length 259 [2018-07-24 14:19:32,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:19:32,875 INFO L471 AbstractCegarLoop]: Abstraction has 42053 states and 58989 transitions. [2018-07-24 14:19:32,875 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:19:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 42053 states and 58989 transitions. [2018-07-24 14:19:32,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-07-24 14:19:32,889 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:19:32,889 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 14:19:32,889 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 14:19:32,890 INFO L82 PathProgramCache]: Analyzing trace with hash 635449850, now seen corresponding path program 1 times [2018-07-24 14:19:32,890 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:19:32,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:19:32,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:19:32,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:19:32,891 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:19:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:19:33,252 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:19:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 125 proven. 23 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-07-24 14:19:33,811 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:19:33,812 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 14:19:33,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:19:33,828 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:19:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:19:33,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:19:34,216 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 14:19:34,216 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:19:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 14:19:34,575 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:19:34,575 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:19:34,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:19:34,593 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:19:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:19:34,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:19:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 278 proven. 6 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 14:19:35,195 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:19:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 280 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 14:19:35,625 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:19:35,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 14:19:35,625 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:19:35,626 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:19:35,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:19:35,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-07-24 14:19:35,627 INFO L87 Difference]: Start difference. First operand 42053 states and 58989 transitions. Second operand 9 states. [2018-07-24 14:19:37,194 WARN L169 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-07-24 14:20:03,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:20:03,027 INFO L93 Difference]: Finished difference Result 111001 states and 170121 transitions. [2018-07-24 14:20:03,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-24 14:20:03,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 303 [2018-07-24 14:20:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:20:03,306 INFO L225 Difference]: With dead ends: 111001 [2018-07-24 14:20:03,306 INFO L226 Difference]: Without dead ends: 68954 [2018-07-24 14:20:03,421 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1279 GetRequests, 1232 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=402, Invalid=1578, Unknown=0, NotChecked=0, Total=1980 [2018-07-24 14:20:03,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68954 states. [2018-07-24 14:20:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68954 to 66166. [2018-07-24 14:20:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66166 states. [2018-07-24 14:20:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66166 states to 66166 states and 88254 transitions. [2018-07-24 14:20:05,126 INFO L78 Accepts]: Start accepts. Automaton has 66166 states and 88254 transitions. Word has length 303 [2018-07-24 14:20:05,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:20:05,127 INFO L471 AbstractCegarLoop]: Abstraction has 66166 states and 88254 transitions. [2018-07-24 14:20:05,127 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:20:05,127 INFO L276 IsEmpty]: Start isEmpty. Operand 66166 states and 88254 transitions. [2018-07-24 14:20:05,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-07-24 14:20:05,148 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:20:05,148 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:20:05,148 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 14:20:05,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1382581820, now seen corresponding path program 1 times [2018-07-24 14:20:05,149 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:20:05,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:05,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:05,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:05,150 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:20:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 14:20:05,825 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:20:05,825 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:20:05,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:05,836 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:20:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:05,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:20:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 14:20:06,258 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:20:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 14:20:06,470 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:20:06,470 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:20:06,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:06,486 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:20:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:06,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:20:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 14:20:07,074 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:20:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 286 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 14:20:07,908 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:20:07,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:20:07,908 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:20:07,909 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:20:07,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:20:07,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:20:07,910 INFO L87 Difference]: Start difference. First operand 66166 states and 88254 transitions. Second operand 9 states. [2018-07-24 14:20:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:20:28,700 INFO L93 Difference]: Finished difference Result 131661 states and 178318 transitions. [2018-07-24 14:20:28,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 14:20:28,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 361 [2018-07-24 14:20:28,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:20:28,920 INFO L225 Difference]: With dead ends: 131661 [2018-07-24 14:20:28,921 INFO L226 Difference]: Without dead ends: 65501 [2018-07-24 14:20:29,048 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1462 GetRequests, 1441 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:20:29,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65501 states. [2018-07-24 14:20:29,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65501 to 65295. [2018-07-24 14:20:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65295 states. [2018-07-24 14:20:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65295 states to 65295 states and 80888 transitions. [2018-07-24 14:20:30,046 INFO L78 Accepts]: Start accepts. Automaton has 65295 states and 80888 transitions. Word has length 361 [2018-07-24 14:20:30,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:20:30,047 INFO L471 AbstractCegarLoop]: Abstraction has 65295 states and 80888 transitions. [2018-07-24 14:20:30,047 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:20:30,047 INFO L276 IsEmpty]: Start isEmpty. Operand 65295 states and 80888 transitions. [2018-07-24 14:20:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-07-24 14:20:30,080 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:20:30,080 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:20:30,081 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 14:20:30,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1040579370, now seen corresponding path program 1 times [2018-07-24 14:20:30,081 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:20:30,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:30,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:30,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:30,082 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:20:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:30,506 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:20:30,732 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 83 proven. 23 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-07-24 14:20:30,732 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:20:30,732 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:20:30,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:30,740 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:20:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:30,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:20:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:20:31,062 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:20:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 210 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:20:31,299 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:20:31,299 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:20:31,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:31,315 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:20:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:31,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:20:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 14:20:31,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:20:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-07-24 14:20:32,698 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 14:20:32,698 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-07-24 14:20:32,698 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:20:32,699 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:20:32,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:20:32,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:20:32,700 INFO L87 Difference]: Start difference. First operand 65295 states and 80888 transitions. Second operand 5 states. [2018-07-24 14:20:39,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:20:39,794 INFO L93 Difference]: Finished difference Result 121537 states and 151790 transitions. [2018-07-24 14:20:39,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:20:39,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 372 [2018-07-24 14:20:39,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:20:39,956 INFO L225 Difference]: With dead ends: 121537 [2018-07-24 14:20:39,956 INFO L226 Difference]: Without dead ends: 65218 [2018-07-24 14:20:40,052 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1496 GetRequests, 1478 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:20:40,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65218 states. [2018-07-24 14:20:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65218 to 65212. [2018-07-24 14:20:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65212 states. [2018-07-24 14:20:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65212 states to 65212 states and 77504 transitions. [2018-07-24 14:20:40,910 INFO L78 Accepts]: Start accepts. Automaton has 65212 states and 77504 transitions. Word has length 372 [2018-07-24 14:20:40,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:20:40,910 INFO L471 AbstractCegarLoop]: Abstraction has 65212 states and 77504 transitions. [2018-07-24 14:20:40,911 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:20:40,911 INFO L276 IsEmpty]: Start isEmpty. Operand 65212 states and 77504 transitions. [2018-07-24 14:20:40,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2018-07-24 14:20:40,945 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:20:40,945 INFO L353 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:20:40,945 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:20:40,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1050446221, now seen corresponding path program 1 times [2018-07-24 14:20:40,946 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:20:40,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:40,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:40,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:40,947 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:20:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2018-07-24 14:20:41,900 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:20:41,900 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:20:41,900 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:20:41,901 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:20:41,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:20:41,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:20:41,901 INFO L87 Difference]: Start difference. First operand 65212 states and 77504 transitions. Second operand 4 states. [2018-07-24 14:20:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:20:46,954 INFO L93 Difference]: Finished difference Result 120612 states and 144259 transitions. [2018-07-24 14:20:46,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:20:46,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 457 [2018-07-24 14:20:46,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:20:47,111 INFO L225 Difference]: With dead ends: 120612 [2018-07-24 14:20:47,112 INFO L226 Difference]: Without dead ends: 65186 [2018-07-24 14:20:47,198 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:20:47,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65186 states. [2018-07-24 14:20:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65186 to 65186. [2018-07-24 14:20:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65186 states. [2018-07-24 14:20:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65186 states to 65186 states and 77445 transitions. [2018-07-24 14:20:47,999 INFO L78 Accepts]: Start accepts. Automaton has 65186 states and 77445 transitions. Word has length 457 [2018-07-24 14:20:47,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:20:47,999 INFO L471 AbstractCegarLoop]: Abstraction has 65186 states and 77445 transitions. [2018-07-24 14:20:48,000 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:20:48,000 INFO L276 IsEmpty]: Start isEmpty. Operand 65186 states and 77445 transitions. [2018-07-24 14:20:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-07-24 14:20:48,032 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:20:48,033 INFO L353 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:20:48,033 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:20:48,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1634253803, now seen corresponding path program 1 times [2018-07-24 14:20:48,033 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:20:48,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:48,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:48,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:20:48,034 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:20:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 342 proven. 215 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-07-24 14:20:48,910 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:20:48,911 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:20:48,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:48,920 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:20:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:49,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:20:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 535 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-07-24 14:20:49,715 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:20:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 347 proven. 80 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2018-07-24 14:20:50,088 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:20:50,088 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:20:50,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:20:50,104 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:20:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:20:50,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:20:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 530 proven. 6 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-07-24 14:20:50,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:20:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 344 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-07-24 14:20:51,052 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:20:51,052 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:20:51,053 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:20:51,053 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:20:51,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:20:51,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:20:51,054 INFO L87 Difference]: Start difference. First operand 65186 states and 77445 transitions. Second operand 9 states. [2018-07-24 14:21:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:21:12,642 INFO L93 Difference]: Finished difference Result 159646 states and 203812 transitions. [2018-07-24 14:21:12,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 14:21:12,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 495 [2018-07-24 14:21:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:21:12,923 INFO L225 Difference]: With dead ends: 159646 [2018-07-24 14:21:12,923 INFO L226 Difference]: Without dead ends: 94466 [2018-07-24 14:21:13,076 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2004 GetRequests, 1979 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 14:21:13,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94466 states. [2018-07-24 14:21:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94466 to 94057. [2018-07-24 14:21:14,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94057 states. [2018-07-24 14:21:14,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94057 states to 94057 states and 113897 transitions. [2018-07-24 14:21:14,708 INFO L78 Accepts]: Start accepts. Automaton has 94057 states and 113897 transitions. Word has length 495 [2018-07-24 14:21:14,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:21:14,709 INFO L471 AbstractCegarLoop]: Abstraction has 94057 states and 113897 transitions. [2018-07-24 14:21:14,709 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:21:14,709 INFO L276 IsEmpty]: Start isEmpty. Operand 94057 states and 113897 transitions. [2018-07-24 14:21:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-07-24 14:21:14,744 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:14,745 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-07-24 14:21:14,745 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:21:14,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1202461663, now seen corresponding path program 1 times [2018-07-24 14:21:14,745 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:14,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:14,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:14,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:14,746 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 373 proven. 103 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-07-24 14:21:15,585 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:21:15,585 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:21:15,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:15,601 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:21:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:15,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:21:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 627 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-07-24 14:21:16,051 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:21:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 373 proven. 103 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-07-24 14:21:16,302 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:21:16,302 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:21:16,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:16,320 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:21:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:17,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:21:17,383 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 627 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-07-24 14:21:17,384 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:21:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 373 proven. 103 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-07-24 14:21:17,593 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:21:17,594 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:21:17,594 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:21:17,596 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:21:17,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:21:17,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:21:17,597 INFO L87 Difference]: Start difference. First operand 94057 states and 113897 transitions. Second operand 9 states. [2018-07-24 14:21:41,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:21:41,695 INFO L93 Difference]: Finished difference Result 213049 states and 281126 transitions. [2018-07-24 14:21:41,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 14:21:41,697 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 507 [2018-07-24 14:21:41,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:21:42,215 INFO L225 Difference]: With dead ends: 213049 [2018-07-24 14:21:42,215 INFO L226 Difference]: Without dead ends: 119003 [2018-07-24 14:21:42,398 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2054 GetRequests, 2031 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-07-24 14:21:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119003 states. [2018-07-24 14:21:44,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119003 to 116523. [2018-07-24 14:21:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116523 states. [2018-07-24 14:21:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116523 states to 116523 states and 154769 transitions. [2018-07-24 14:21:45,203 INFO L78 Accepts]: Start accepts. Automaton has 116523 states and 154769 transitions. Word has length 507 [2018-07-24 14:21:45,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:21:45,203 INFO L471 AbstractCegarLoop]: Abstraction has 116523 states and 154769 transitions. [2018-07-24 14:21:45,203 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:21:45,203 INFO L276 IsEmpty]: Start isEmpty. Operand 116523 states and 154769 transitions. [2018-07-24 14:21:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-07-24 14:21:45,293 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:21:45,294 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-07-24 14:21:45,294 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:21:45,294 INFO L82 PathProgramCache]: Analyzing trace with hash 688222215, now seen corresponding path program 1 times [2018-07-24 14:21:45,294 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:21:45,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:45,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:45,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:21:45,295 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:21:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 382 proven. 80 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-07-24 14:21:45,909 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:21:45,909 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:21:45,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:21:45,919 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:21:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:21:46,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:21:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 454 proven. 2 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2018-07-24 14:21:47,116 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-07-24 14:21:47,264 WARN L177 SmtUtils]: Removed 4 from assertion stack [2018-07-24 14:21:47,265 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 14:21:47,466 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:21:47,466 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:21:47,472 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:21:47,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:21:47 BoogieIcfgContainer [2018-07-24 14:21:47,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:21:47,473 INFO L168 Benchmark]: Toolchain (without parser) took 233278.80 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 14:21:47,474 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:21:47,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2741.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:21:47,475 INFO L168 Benchmark]: Boogie Procedure Inliner took 333.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:21:47,476 INFO L168 Benchmark]: Boogie Preprocessor took 1278.37 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:21:47,477 INFO L168 Benchmark]: RCFGBuilder took 13998.32 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 167.2 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 64.2 MB). Peak memory consumption was 754.4 MB. Max. memory is 7.1 GB. [2018-07-24 14:21:47,478 INFO L168 Benchmark]: TraceAbstraction took 214920.46 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: -341.0 MB). Peak memory consumption was 826.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:21:47,484 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2741.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 333.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1278.37 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13998.32 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 167.2 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 64.2 MB). Peak memory consumption was 754.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214920.46 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: -341.0 MB). Peak memory consumption was 826.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 135). Cancelled while BasicCegarLoop was analyzing trace of length 531 with TraceHistMax 5, while TraceCheckSpWp was constructing backward predicates, while PartialQuantifierElimination was doing sequential composition of 5 TransFormulas, while SimplifyDDAWithTimeout was simplifying term of DAG size 12. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 214.8s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 183.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6786 SDtfs, 44148 SDslu, 7693 SDs, 0 SdLazy, 82622 SolverSat, 18064 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 151.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8856 GetRequests, 8691 SyntacticMatches, 28 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116523occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 10.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 6041 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 7563 NumberOfCodeBlocks, 7563 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 11865 ConstructedInterpolants, 0 QuantifiedInterpolants, 12900064 SizeOfPredicates, 10 NumberOfNonLiveVariables, 7307 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 33 InterpolantComputations, 8 PerfectInterpolantSequences, 12244/13104 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-21-47-498.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-21-47-498.csv Completed graceful shutdown