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_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:22:56,014 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:22:56,016 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:22:56,032 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:22:56,033 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:22:56,034 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:22:56,035 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:22:56,037 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:22:56,038 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:22:56,039 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:22:56,040 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:22:56,040 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:22:56,041 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:22:56,042 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:22:56,043 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:22:56,044 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:22:56,045 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:22:56,047 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:22:56,049 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:22:56,050 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:22:56,051 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:22:56,053 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:22:56,055 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:22:56,055 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:22:56,055 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:22:56,056 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:22:56,057 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:22:56,058 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:22:56,059 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:22:56,060 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:22:56,060 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:22:56,061 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:22:56,061 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:22:56,061 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:22:56,062 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:22:56,063 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:22:56,063 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 14:22:56,079 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:22:56,079 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:22:56,080 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:22:56,080 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:22:56,080 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:22:56,080 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:22:56,081 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:22:56,081 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:22:56,081 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:22:56,081 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:22:56,081 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:22:56,082 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:22:56,082 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:22:56,083 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:22:56,083 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:22:56,083 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:22:56,083 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:22:56,083 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:22:56,084 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:22:56,084 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:22:56,084 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:22:56,084 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:22:56,084 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:22:56,085 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:22:56,085 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:22:56,085 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:22:56,085 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:22:56,085 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:22:56,086 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:22:56,086 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:22:56,086 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:22:56,086 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:22:56,086 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:22:56,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:22:56,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:22:56,160 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:22:56,162 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:22:56,162 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:22:56,163 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c [2018-07-24 14:22:56,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/802d7e0fb/8161fdc046c2409a9fe541187fd0f7d1/FLAG729a5753f [2018-07-24 14:22:57,047 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:22:57,047 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c [2018-07-24 14:22:57,093 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/802d7e0fb/8161fdc046c2409a9fe541187fd0f7d1/FLAG729a5753f [2018-07-24 14:22:57,117 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/802d7e0fb/8161fdc046c2409a9fe541187fd0f7d1 [2018-07-24 14:22:57,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:22:57,136 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:22:57,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:22:57,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:22:57,148 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:22:57,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:22:57" (1/1) ... [2018-07-24 14:22:57,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b4ca61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:57, skipping insertion in model container [2018-07-24 14:22:57,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:22:57" (1/1) ... [2018-07-24 14:22:57,573 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:22:58,721 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:22:58,742 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:22:59,587 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:22:59,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:59 WrapperNode [2018-07-24 14:22:59,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:22:59,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:22:59,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:22:59,998 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:23:00,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:59" (1/1) ... [2018-07-24 14:23:00,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:59" (1/1) ... [2018-07-24 14:23:00,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:23:00,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:23:00,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:23:00,310 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:23:01,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:59" (1/1) ... [2018-07-24 14:23:01,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:59" (1/1) ... [2018-07-24 14:23:01,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:59" (1/1) ... [2018-07-24 14:23:01,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:59" (1/1) ... [2018-07-24 14:23:01,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:59" (1/1) ... [2018-07-24 14:23:01,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:59" (1/1) ... [2018-07-24 14:23:01,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:59" (1/1) ... [2018-07-24 14:23:01,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:23:01,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:23:01,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:23:01,613 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:23:01,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:59" (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 14:23:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:23:01,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:23:01,689 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 14:23:01,690 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 14:23:01,690 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 14:23:01,690 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 14:23:01,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:23:01,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:23:01,690 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 14:23:01,691 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 14:23:01,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:23:01,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:23:01,692 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 14:23:01,692 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 14:23:15,615 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:23:15,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:23:15 BoogieIcfgContainer [2018-07-24 14:23:15,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:23:15,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:23:15,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:23:15,620 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:23:15,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:22:57" (1/3) ... [2018-07-24 14:23:15,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4060ef1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:23:15, skipping insertion in model container [2018-07-24 14:23:15,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:22:59" (2/3) ... [2018-07-24 14:23:15,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4060ef1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:23:15, skipping insertion in model container [2018-07-24 14:23:15,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:23:15" (3/3) ... [2018-07-24 14:23:15,624 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label47_true-unreach-call.c [2018-07-24 14:23:15,632 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:23:15,641 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:23:15,701 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:23:15,702 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:23:15,702 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:23:15,702 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:23:15,703 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:23:15,703 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:23:15,703 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:23:15,703 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:23:15,703 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:23:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 14:23:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-07-24 14:23:15,751 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:15,752 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:23:15,752 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 14:23:15,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1466979756, now seen corresponding path program 1 times [2018-07-24 14:23:15,761 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:15,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:15,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:15,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:15,811 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:16,268 WARN L169 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:23:16,366 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 14:23:16,368 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:16,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:23:16,369 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:16,375 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:23:16,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:23:16,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:23:16,391 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-07-24 14:23:28,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:28,555 INFO L93 Difference]: Finished difference Result 3104 states and 5729 transitions. [2018-07-24 14:23:28,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:23:28,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-07-24 14:23:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:28,594 INFO L225 Difference]: With dead ends: 3104 [2018-07-24 14:23:28,595 INFO L226 Difference]: Without dead ends: 1982 [2018-07-24 14:23:28,605 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 14:23:28,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2018-07-24 14:23:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1965. [2018-07-24 14:23:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2018-07-24 14:23:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3515 transitions. [2018-07-24 14:23:28,782 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3515 transitions. Word has length 50 [2018-07-24 14:23:28,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:28,783 INFO L471 AbstractCegarLoop]: Abstraction has 1965 states and 3515 transitions. [2018-07-24 14:23:28,783 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:23:28,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3515 transitions. [2018-07-24 14:23:28,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-24 14:23:28,791 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:28,791 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:28,791 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 14:23:28,792 INFO L82 PathProgramCache]: Analyzing trace with hash -2116279952, now seen corresponding path program 1 times [2018-07-24 14:23:28,792 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:28,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:28,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:28,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:28,794 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:29,086 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:29,086 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:23:29,086 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:29,088 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:23:29,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:23:29,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:23:29,089 INFO L87 Difference]: Start difference. First operand 1965 states and 3515 transitions. Second operand 6 states. [2018-07-24 14:23:46,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:46,219 INFO L93 Difference]: Finished difference Result 7217 states and 13326 transitions. [2018-07-24 14:23:46,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:23:46,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-07-24 14:23:46,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:46,251 INFO L225 Difference]: With dead ends: 7217 [2018-07-24 14:23:46,252 INFO L226 Difference]: Without dead ends: 5258 [2018-07-24 14:23:46,264 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:23:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2018-07-24 14:23:46,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 5228. [2018-07-24 14:23:46,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5228 states. [2018-07-24 14:23:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 8304 transitions. [2018-07-24 14:23:46,433 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 8304 transitions. Word has length 120 [2018-07-24 14:23:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:46,434 INFO L471 AbstractCegarLoop]: Abstraction has 5228 states and 8304 transitions. [2018-07-24 14:23:46,434 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:23:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 8304 transitions. [2018-07-24 14:23:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-24 14:23:46,442 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:46,445 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:23:46,445 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 14:23:46,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1054701768, now seen corresponding path program 1 times [2018-07-24 14:23:46,446 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:46,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:46,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:46,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:46,448 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:46,749 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:46,749 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 14:23:46,749 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:46,750 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 14:23:46,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 14:23:46,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:23:46,751 INFO L87 Difference]: Start difference. First operand 5228 states and 8304 transitions. Second operand 7 states. [2018-07-24 14:24:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:09,312 INFO L93 Difference]: Finished difference Result 18314 states and 31314 transitions. [2018-07-24 14:24:09,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:24:09,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2018-07-24 14:24:09,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:09,403 INFO L225 Difference]: With dead ends: 18314 [2018-07-24 14:24:09,404 INFO L226 Difference]: Without dead ends: 13092 [2018-07-24 14:24:09,433 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:24:09,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13092 states. [2018-07-24 14:24:09,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13092 to 12956. [2018-07-24 14:24:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12956 states. [2018-07-24 14:24:09,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12956 states to 12956 states and 19065 transitions. [2018-07-24 14:24:09,865 INFO L78 Accepts]: Start accepts. Automaton has 12956 states and 19065 transitions. Word has length 133 [2018-07-24 14:24:09,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:09,865 INFO L471 AbstractCegarLoop]: Abstraction has 12956 states and 19065 transitions. [2018-07-24 14:24:09,865 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 14:24:09,866 INFO L276 IsEmpty]: Start isEmpty. Operand 12956 states and 19065 transitions. [2018-07-24 14:24:09,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-24 14:24:09,876 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:09,876 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:24:09,877 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 14:24:09,877 INFO L82 PathProgramCache]: Analyzing trace with hash 461643745, now seen corresponding path program 1 times [2018-07-24 14:24:09,877 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:09,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:09,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:09,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:09,882 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 86 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:24:10,192 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:10,192 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 14:24:10,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:10,202 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:10,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:24:10,553 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:24:10,763 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:24:10,764 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-07-24 14:24:10,764 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:10,765 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:24:10,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:24:10,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:24:10,766 INFO L87 Difference]: Start difference. First operand 12956 states and 19065 transitions. Second operand 3 states. [2018-07-24 14:24:21,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:21,227 INFO L93 Difference]: Finished difference Result 37441 states and 58377 transitions. [2018-07-24 14:24:21,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:24:21,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-07-24 14:24:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:21,377 INFO L225 Difference]: With dead ends: 37441 [2018-07-24 14:24:21,377 INFO L226 Difference]: Without dead ends: 24491 [2018-07-24 14:24:21,451 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 419 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:24:21,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24491 states. [2018-07-24 14:24:22,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24491 to 24440. [2018-07-24 14:24:22,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24440 states. [2018-07-24 14:24:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24440 states to 24440 states and 36490 transitions. [2018-07-24 14:24:22,127 INFO L78 Accepts]: Start accepts. Automaton has 24440 states and 36490 transitions. Word has length 210 [2018-07-24 14:24:22,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:22,128 INFO L471 AbstractCegarLoop]: Abstraction has 24440 states and 36490 transitions. [2018-07-24 14:24:22,128 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:24:22,129 INFO L276 IsEmpty]: Start isEmpty. Operand 24440 states and 36490 transitions. [2018-07-24 14:24:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-07-24 14:24:22,150 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:22,153 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:24:22,154 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 14:24:22,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1502807339, now seen corresponding path program 1 times [2018-07-24 14:24:22,154 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:22,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:22,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:22,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:22,156 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:22,456 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:24:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 86 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:24:22,852 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:22,852 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 14:24:22,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:22,872 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:22,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 14:24:23,477 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:23,762 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:24:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 86 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:24:24,326 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:24:24,327 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 14:24:24,327 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:24,328 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:24:24,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:24:24,328 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:24:24,329 INFO L87 Difference]: Start difference. First operand 24440 states and 36490 transitions. Second operand 5 states. [2018-07-24 14:24:47,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:47,775 INFO L93 Difference]: Finished difference Result 65251 states and 106666 transitions. [2018-07-24 14:24:47,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:24:47,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2018-07-24 14:24:47,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:48,007 INFO L225 Difference]: With dead ends: 65251 [2018-07-24 14:24:48,007 INFO L226 Difference]: Without dead ends: 40817 [2018-07-24 14:24:48,089 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:24:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40817 states. [2018-07-24 14:24:49,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40817 to 40337. [2018-07-24 14:24:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40337 states. [2018-07-24 14:24:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40337 states to 40337 states and 63211 transitions. [2018-07-24 14:24:49,540 INFO L78 Accepts]: Start accepts. Automaton has 40337 states and 63211 transitions. Word has length 230 [2018-07-24 14:24:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:49,541 INFO L471 AbstractCegarLoop]: Abstraction has 40337 states and 63211 transitions. [2018-07-24 14:24:49,541 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:24:49,541 INFO L276 IsEmpty]: Start isEmpty. Operand 40337 states and 63211 transitions. [2018-07-24 14:24:49,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-07-24 14:24:49,588 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:49,588 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:24:49,588 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 14:24:49,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1280804818, now seen corresponding path program 1 times [2018-07-24 14:24:49,589 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:49,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:49,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:49,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:49,590 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 86 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:24:49,940 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:49,940 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:24:49,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:49,952 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:50,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 14:24:50,175 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 86 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:24:50,642 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:24:50,642 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 14:24:50,642 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:50,643 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:24:50,643 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:24:50,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:24:50,644 INFO L87 Difference]: Start difference. First operand 40337 states and 63211 transitions. Second operand 5 states. [2018-07-24 14:25:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:11,126 INFO L93 Difference]: Finished difference Result 99331 states and 172568 transitions. [2018-07-24 14:25:11,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:25:11,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 259 [2018-07-24 14:25:11,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:11,443 INFO L225 Difference]: With dead ends: 99331 [2018-07-24 14:25:11,444 INFO L226 Difference]: Without dead ends: 59000 [2018-07-24 14:25:11,572 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 516 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:25:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59000 states. [2018-07-24 14:25:12,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59000 to 58583. [2018-07-24 14:25:12,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58583 states. [2018-07-24 14:25:13,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58583 states to 58583 states and 97947 transitions. [2018-07-24 14:25:13,207 INFO L78 Accepts]: Start accepts. Automaton has 58583 states and 97947 transitions. Word has length 259 [2018-07-24 14:25:13,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:13,208 INFO L471 AbstractCegarLoop]: Abstraction has 58583 states and 97947 transitions. [2018-07-24 14:25:13,208 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:25:13,208 INFO L276 IsEmpty]: Start isEmpty. Operand 58583 states and 97947 transitions. [2018-07-24 14:25:13,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-24 14:25:13,240 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:13,240 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:25:13,240 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 14:25:13,241 INFO L82 PathProgramCache]: Analyzing trace with hash 2032230598, now seen corresponding path program 1 times [2018-07-24 14:25:13,241 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:13,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:13,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:13,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:13,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:25:14,271 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:25:14,271 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 14:25:14,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:14,279 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:25:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:14,396 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:25:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-07-24 14:25:14,538 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:25:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-07-24 14:25:14,656 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:25:14,656 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2018-07-24 14:25:14,656 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:25:14,657 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:25:14,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:25:14,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:25:14,657 INFO L87 Difference]: Start difference. First operand 58583 states and 97947 transitions. Second operand 3 states. [2018-07-24 14:25:23,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:23,021 INFO L93 Difference]: Finished difference Result 144254 states and 254825 transitions. [2018-07-24 14:25:23,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:25:23,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2018-07-24 14:25:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:23,454 INFO L225 Difference]: With dead ends: 144254 [2018-07-24 14:25:23,454 INFO L226 Difference]: Without dead ends: 85677 [2018-07-24 14:25:24,273 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:25:24,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85677 states. [2018-07-24 14:25:25,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85677 to 85634. [2018-07-24 14:25:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85634 states. [2018-07-24 14:25:26,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85634 states to 85634 states and 138424 transitions. [2018-07-24 14:25:26,076 INFO L78 Accepts]: Start accepts. Automaton has 85634 states and 138424 transitions. Word has length 274 [2018-07-24 14:25:26,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:26,077 INFO L471 AbstractCegarLoop]: Abstraction has 85634 states and 138424 transitions. [2018-07-24 14:25:26,077 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:25:26,077 INFO L276 IsEmpty]: Start isEmpty. Operand 85634 states and 138424 transitions. [2018-07-24 14:25:26,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-24 14:25:26,165 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:26,166 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:25:26,166 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 14:25:26,166 INFO L82 PathProgramCache]: Analyzing trace with hash 400982316, now seen corresponding path program 1 times [2018-07-24 14:25:26,167 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:26,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:26,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:26,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:26,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:26,571 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:25:27,104 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 135 proven. 184 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:25:27,104 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:25:27,104 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:25:27,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:27,123 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:25:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:27,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:25:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-07-24 14:25:27,485 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:25:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-07-24 14:25:28,487 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:25:28,487 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 8 [2018-07-24 14:25:28,487 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:25:28,487 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:25:28,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:25:28,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:25:28,488 INFO L87 Difference]: Start difference. First operand 85634 states and 138424 transitions. Second operand 3 states. [2018-07-24 14:25:33,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:33,935 INFO L93 Difference]: Finished difference Result 164760 states and 268287 transitions. [2018-07-24 14:25:33,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:25:33,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 376 [2018-07-24 14:25:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:34,219 INFO L225 Difference]: With dead ends: 164760 [2018-07-24 14:25:34,220 INFO L226 Difference]: Without dead ends: 85573 [2018-07-24 14:25:34,361 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 752 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:25:34,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85573 states. [2018-07-24 14:25:35,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85573 to 85569. [2018-07-24 14:25:35,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85569 states. [2018-07-24 14:25:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85569 states to 85569 states and 137889 transitions. [2018-07-24 14:25:37,203 INFO L78 Accepts]: Start accepts. Automaton has 85569 states and 137889 transitions. Word has length 376 [2018-07-24 14:25:37,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:37,204 INFO L471 AbstractCegarLoop]: Abstraction has 85569 states and 137889 transitions. [2018-07-24 14:25:37,204 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:25:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 85569 states and 137889 transitions. [2018-07-24 14:25:37,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-07-24 14:25:37,324 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:37,325 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:25:37,325 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 14:25:37,326 INFO L82 PathProgramCache]: Analyzing trace with hash -866747744, now seen corresponding path program 1 times [2018-07-24 14:25:37,326 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:37,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:37,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:37,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:37,327 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:37,645 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:25:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 135 proven. 184 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:25:37,731 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:25:37,731 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 14:25:37,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:37,739 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:25:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:37,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:25:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-07-24 14:25:38,008 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:25:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 205 proven. 72 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-24 14:25:38,204 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:25:38,204 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 14:25:38,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:38,220 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:25:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:38,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:25:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 275 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-07-24 14:25:38,757 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:25:39,127 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 137 proven. 179 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 14:25:39,129 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:25:39,130 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:25:39,130 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:25:39,131 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:25:39,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:25:39,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:25:39,132 INFO L87 Difference]: Start difference. First operand 85569 states and 137889 transitions. Second operand 9 states. [2018-07-24 14:25:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:58,737 INFO L93 Difference]: Finished difference Result 218402 states and 399313 transitions. [2018-07-24 14:25:58,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-24 14:25:58,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 390 [2018-07-24 14:25:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:26:00,270 INFO L225 Difference]: With dead ends: 218402 [2018-07-24 14:26:00,270 INFO L226 Difference]: Without dead ends: 133643 [2018-07-24 14:26:00,417 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1585 GetRequests, 1559 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:26:00,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133643 states. [2018-07-24 14:26:02,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133643 to 133144. [2018-07-24 14:26:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133144 states. [2018-07-24 14:26:04,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133144 states to 133144 states and 199656 transitions. [2018-07-24 14:26:04,117 INFO L78 Accepts]: Start accepts. Automaton has 133144 states and 199656 transitions. Word has length 390 [2018-07-24 14:26:04,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:26:04,118 INFO L471 AbstractCegarLoop]: Abstraction has 133144 states and 199656 transitions. [2018-07-24 14:26:04,118 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:26:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 133144 states and 199656 transitions. [2018-07-24 14:26:04,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2018-07-24 14:26:04,195 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:26:04,195 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:26:04,196 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 14:26:04,196 INFO L82 PathProgramCache]: Analyzing trace with hash 445763463, now seen corresponding path program 1 times [2018-07-24 14:26:04,196 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:26:04,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:26:04,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:26:04,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:26:04,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:26:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:26:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 14:26:04,668 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:26:04,668 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 14:26:04,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:26:04,678 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:26:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:26:04,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:26:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 14:26:05,003 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:26:05,256 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 14:26:05,277 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:26:05,278 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 14:26:05,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:26:05,294 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:26:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:26:05,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:26:06,281 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 14:26:06,282 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:26:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-07-24 14:26:06,513 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:26:06,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:26:06,513 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:26:06,514 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:26:06,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:26:06,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:26:06,515 INFO L87 Difference]: Start difference. First operand 133144 states and 199656 transitions. Second operand 9 states. [2018-07-24 14:26:28,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:26:28,511 INFO L93 Difference]: Finished difference Result 363820 states and 701280 transitions. [2018-07-24 14:26:28,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 14:26:28,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 431 [2018-07-24 14:26:28,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:26:30,139 INFO L225 Difference]: With dead ends: 363820 [2018-07-24 14:26:30,139 INFO L226 Difference]: Without dead ends: 231486 [2018-07-24 14:26:37,423 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1740 GetRequests, 1720 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:26:37,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231486 states. Received shutdown request... [2018-07-24 14:26:42,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231486 to 230764. [2018-07-24 14:26:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230764 states. [2018-07-24 14:26:42,506 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:26:42,512 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:26:42,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:26:42 BoogieIcfgContainer [2018-07-24 14:26:42,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:26:42,513 INFO L168 Benchmark]: Toolchain (without parser) took 225380.66 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-07-24 14:26:42,514 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:26:42,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2859.31 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: 328.7 MB). Peak memory consumption was 328.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:26:42,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 312.43 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:26:42,516 INFO L168 Benchmark]: Boogie Preprocessor took 1302.46 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 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:26:42,517 INFO L168 Benchmark]: RCFGBuilder took 14003.08 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 155.7 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 94.5 MB). Peak memory consumption was 745.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:26:42,518 INFO L168 Benchmark]: TraceAbstraction took 206895.58 ms. Allocated memory was 2.7 GB in the beginning and 5.1 GB in the end (delta: 2.4 GB). Free memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: -922.9 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-07-24 14:26:42,523 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2859.31 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: 328.7 MB). Peak memory consumption was 328.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 312.43 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1302.46 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 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14003.08 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 155.7 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 94.5 MB). Peak memory consumption was 745.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206895.58 ms. Allocated memory was 2.7 GB in the beginning and 5.1 GB in the end (delta: 2.4 GB). Free memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: -922.9 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 206.8s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 175.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6676 SDtfs, 33437 SDslu, 4814 SDs, 0 SdLazy, 57076 SolverSat, 14387 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 134.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6085 GetRequests, 5975 SyntacticMatches, 21 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133144occurred in iteration=9, 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: 17.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 1677 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 5464 NumberOfCodeBlocks, 5464 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 8427 ConstructedInterpolants, 0 QuantifiedInterpolants, 6578642 SizeOfPredicates, 13 NumberOfNonLiveVariables, 5210 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 28 InterpolantComputations, 10 PerfectInterpolantSequences, 6526/7569 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_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-26-42-539.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-26-42-539.csv Completed graceful shutdown