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/Problem12_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:09:33,996 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:09:33,998 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:09:34,010 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:09:34,010 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:09:34,011 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:09:34,013 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:09:34,016 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:09:34,018 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:09:34,019 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:09:34,020 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:09:34,022 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:09:34,026 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:09:34,027 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:09:34,031 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:09:34,032 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:09:34,033 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:09:34,040 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:09:34,044 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:09:34,046 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:09:34,049 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:09:34,050 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:09:34,055 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:09:34,056 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:09:34,056 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:09:34,061 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:09:34,062 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:09:34,063 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:09:34,064 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:09:34,065 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:09:34,065 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:09:34,066 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:09:34,066 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:09:34,066 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:09:34,067 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:09:34,068 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:09:34,068 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 14:09:34,096 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:09:34,096 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:09:34,097 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:09:34,098 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:09:34,098 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:09:34,098 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:09:34,098 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:09:34,100 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:09:34,100 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:09:34,100 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:09:34,101 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:09:34,101 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:09:34,102 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:09:34,102 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:09:34,102 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:09:34,102 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:09:34,102 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:09:34,102 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:09:34,103 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:09:34,103 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:09:34,103 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:09:34,103 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:09:34,104 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:09:34,105 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:09:34,105 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:09:34,105 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:09:34,105 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:09:34,105 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:09:34,106 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:09:34,106 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:09:34,106 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:09:34,106 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:09:34,107 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:09:34,158 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:09:34,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:09:34,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:09:34,183 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:09:34,184 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:09:34,184 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label24_true-unreach-call.c [2018-07-24 14:09:34,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/635ccbdc1/0112158305d24f1cbb64e60e1f5a4fe6/FLAGc4ea997ed [2018-07-24 14:09:35,009 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:09:35,010 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label24_true-unreach-call.c [2018-07-24 14:09:35,055 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/635ccbdc1/0112158305d24f1cbb64e60e1f5a4fe6/FLAGc4ea997ed [2018-07-24 14:09:35,075 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/635ccbdc1/0112158305d24f1cbb64e60e1f5a4fe6 [2018-07-24 14:09:35,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:09:35,091 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:09:35,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:09:35,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:09:35,100 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:09:35,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:09:35" (1/1) ... [2018-07-24 14:09:35,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d9fee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:35, skipping insertion in model container [2018-07-24 14:09:35,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:09:35" (1/1) ... [2018-07-24 14:09:35,418 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:09:36,514 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:09:36,531 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:09:37,215 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:09:37,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:37 WrapperNode [2018-07-24 14:09:37,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:09:37,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:09:37,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:09:37,479 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:09:37,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:37" (1/1) ... [2018-07-24 14:09:37,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:37" (1/1) ... [2018-07-24 14:09:37,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:09:37,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:09:37,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:09:37,738 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:09:38,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:37" (1/1) ... [2018-07-24 14:09:38,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:37" (1/1) ... [2018-07-24 14:09:38,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:37" (1/1) ... [2018-07-24 14:09:38,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:37" (1/1) ... [2018-07-24 14:09:38,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:37" (1/1) ... [2018-07-24 14:09:38,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:37" (1/1) ... [2018-07-24 14:09:38,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:37" (1/1) ... [2018-07-24 14:09:38,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:09:38,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:09:38,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:09:38,613 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:09:38,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:37" (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 14:09:38,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:09:38,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:09:38,693 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 14:09:38,693 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 14:09:38,693 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 14:09:38,693 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 14:09:38,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:09:38,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:09:38,694 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 14:09:38,694 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 14:09:38,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:09:38,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:09:38,695 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 14:09:38,695 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 14:09:49,272 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:09:49,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:09:49 BoogieIcfgContainer [2018-07-24 14:09:49,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:09:49,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:09:49,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:09:49,278 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:09:49,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:09:35" (1/3) ... [2018-07-24 14:09:49,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60174587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:09:49, skipping insertion in model container [2018-07-24 14:09:49,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:09:37" (2/3) ... [2018-07-24 14:09:49,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60174587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:09:49, skipping insertion in model container [2018-07-24 14:09:49,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:09:49" (3/3) ... [2018-07-24 14:09:49,282 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label24_true-unreach-call.c [2018-07-24 14:09:49,291 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:09:49,301 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:09:49,366 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:09:49,367 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:09:49,367 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:09:49,368 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:09:49,368 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:09:49,368 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:09:49,368 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:09:49,368 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:09:49,368 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:09:49,411 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:09:49,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-24 14:09:49,424 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:09:49,425 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:09:49,426 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 14:09:49,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1602315639, now seen corresponding path program 1 times [2018-07-24 14:09:49,434 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:09:49,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:49,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:09:49,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:09:49,491 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:09:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:09:49,878 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 14:09:49,880 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:09:49,881 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:09:49,881 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:09:49,887 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:09:49,902 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:09:49,902 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:09:49,906 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 14:10:01,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:01,925 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 14:10:01,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:10:01,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-07-24 14:10:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:01,973 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 14:10:01,973 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 14:10:01,988 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:10:02,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 14:10:02,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 14:10:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 14:10:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-07-24 14:10:02,163 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 53 [2018-07-24 14:10:02,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:02,164 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-07-24 14:10:02,164 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:10:02,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-07-24 14:10:02,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-24 14:10:02,174 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:02,175 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:10:02,176 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 14:10:02,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1056063170, now seen corresponding path program 1 times [2018-07-24 14:10:02,177 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:02,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:02,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:02,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:02,179 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:10:02,531 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:10:02,531 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:10:02,532 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:02,534 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:10:02,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:10:02,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:10:02,535 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 6 states. [2018-07-24 14:10:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:21,622 INFO L93 Difference]: Finished difference Result 6329 states and 11914 transitions. [2018-07-24 14:10:21,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:10:21,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-07-24 14:10:21,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:21,666 INFO L225 Difference]: With dead ends: 6329 [2018-07-24 14:10:21,666 INFO L226 Difference]: Without dead ends: 4731 [2018-07-24 14:10:21,676 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:10:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2018-07-24 14:10:21,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4702. [2018-07-24 14:10:21,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4702 states. [2018-07-24 14:10:21,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 7573 transitions. [2018-07-24 14:10:21,839 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 7573 transitions. Word has length 127 [2018-07-24 14:10:21,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:21,840 INFO L471 AbstractCegarLoop]: Abstraction has 4702 states and 7573 transitions. [2018-07-24 14:10:21,840 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:10:21,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 7573 transitions. [2018-07-24 14:10:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-24 14:10:21,849 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:21,850 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:10:21,850 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 14:10:21,850 INFO L82 PathProgramCache]: Analyzing trace with hash -636478170, now seen corresponding path program 1 times [2018-07-24 14:10:21,850 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:21,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:21,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:21,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:21,852 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:10:22,126 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:10:22,127 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 14:10:22,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:22,138 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:10:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:22,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:10:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:10:22,404 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:10:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:10:22,876 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:10:22,876 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-07-24 14:10:22,876 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:22,877 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:10:22,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:10:22,878 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:10:22,878 INFO L87 Difference]: Start difference. First operand 4702 states and 7573 transitions. Second operand 3 states. [2018-07-24 14:10:32,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:32,139 INFO L93 Difference]: Finished difference Result 14001 states and 22913 transitions. [2018-07-24 14:10:32,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:10:32,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2018-07-24 14:10:32,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:32,201 INFO L225 Difference]: With dead ends: 14001 [2018-07-24 14:10:32,202 INFO L226 Difference]: Without dead ends: 9305 [2018-07-24 14:10:32,222 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 257 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:10:32,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9305 states. [2018-07-24 14:10:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9305 to 9305. [2018-07-24 14:10:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9305 states. [2018-07-24 14:10:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9305 states to 9305 states and 14321 transitions. [2018-07-24 14:10:32,472 INFO L78 Accepts]: Start accepts. Automaton has 9305 states and 14321 transitions. Word has length 129 [2018-07-24 14:10:32,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:32,473 INFO L471 AbstractCegarLoop]: Abstraction has 9305 states and 14321 transitions. [2018-07-24 14:10:32,473 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:10:32,473 INFO L276 IsEmpty]: Start isEmpty. Operand 9305 states and 14321 transitions. [2018-07-24 14:10:32,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-24 14:10:32,478 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:32,478 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:10:32,478 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 14:10:32,479 INFO L82 PathProgramCache]: Analyzing trace with hash 266943770, now seen corresponding path program 1 times [2018-07-24 14:10:32,479 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:32,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:32,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:32,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:32,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:10:32,845 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:10:32,845 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:10:32,845 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:32,846 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:10:32,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:10:32,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:10:32,847 INFO L87 Difference]: Start difference. First operand 9305 states and 14321 transitions. Second operand 5 states. [2018-07-24 14:10:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:43,035 INFO L93 Difference]: Finished difference Result 28273 states and 44855 transitions. [2018-07-24 14:10:43,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:10:43,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-07-24 14:10:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:43,139 INFO L225 Difference]: With dead ends: 28273 [2018-07-24 14:10:43,139 INFO L226 Difference]: Without dead ends: 18974 [2018-07-24 14:10:43,168 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:10:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18974 states. [2018-07-24 14:10:43,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18974 to 18835. [2018-07-24 14:10:43,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18835 states. [2018-07-24 14:10:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18835 states to 18835 states and 27558 transitions. [2018-07-24 14:10:43,682 INFO L78 Accepts]: Start accepts. Automaton has 18835 states and 27558 transitions. Word has length 139 [2018-07-24 14:10:43,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:43,683 INFO L471 AbstractCegarLoop]: Abstraction has 18835 states and 27558 transitions. [2018-07-24 14:10:43,683 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:10:43,683 INFO L276 IsEmpty]: Start isEmpty. Operand 18835 states and 27558 transitions. [2018-07-24 14:10:43,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-07-24 14:10:43,693 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:43,693 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:10:43,694 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 14:10:43,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1845875054, now seen corresponding path program 1 times [2018-07-24 14:10:43,694 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:43,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:43,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:43,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:43,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:44,036 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:10:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:10:44,469 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:10:44,470 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:10:44,470 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:44,475 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:10:44,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:10:44,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:10:44,475 INFO L87 Difference]: Start difference. First operand 18835 states and 27558 transitions. Second operand 6 states. [2018-07-24 14:10:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:53,207 INFO L93 Difference]: Finished difference Result 44389 states and 67689 transitions. [2018-07-24 14:10:53,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:10:53,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-07-24 14:10:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:53,305 INFO L225 Difference]: With dead ends: 44389 [2018-07-24 14:10:53,305 INFO L226 Difference]: Without dead ends: 25560 [2018-07-24 14:10:53,356 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:10:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25560 states. [2018-07-24 14:10:53,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25560 to 25408. [2018-07-24 14:10:53,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25408 states. [2018-07-24 14:10:53,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25408 states to 25408 states and 36384 transitions. [2018-07-24 14:10:53,891 INFO L78 Accepts]: Start accepts. Automaton has 25408 states and 36384 transitions. Word has length 167 [2018-07-24 14:10:53,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:53,892 INFO L471 AbstractCegarLoop]: Abstraction has 25408 states and 36384 transitions. [2018-07-24 14:10:53,892 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:10:53,892 INFO L276 IsEmpty]: Start isEmpty. Operand 25408 states and 36384 transitions. [2018-07-24 14:10:53,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-24 14:10:53,904 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:53,904 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:10:53,904 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 14:10:53,905 INFO L82 PathProgramCache]: Analyzing trace with hash 618977238, now seen corresponding path program 1 times [2018-07-24 14:10:53,905 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:53,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:53,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:53,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:53,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:54,188 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:10:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 92 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:10:54,640 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:10:54,640 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 14:10:54,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:54,656 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:10:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:54,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:10:55,181 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-07-24 14:10:55,182 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:10:55,476 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:10:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 92 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:10:56,112 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:10:56,112 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 14:10:56,112 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:56,113 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:10:56,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:10:56,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:10:56,114 INFO L87 Difference]: Start difference. First operand 25408 states and 36384 transitions. Second operand 5 states. [2018-07-24 14:11:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:08,595 INFO L93 Difference]: Finished difference Result 69378 states and 103961 transitions. [2018-07-24 14:11:08,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:11:08,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2018-07-24 14:11:08,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:08,797 INFO L225 Difference]: With dead ends: 69378 [2018-07-24 14:11:08,797 INFO L226 Difference]: Without dead ends: 43976 [2018-07-24 14:11:08,865 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 430 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:11:08,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43976 states. [2018-07-24 14:11:09,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43976 to 43803. [2018-07-24 14:11:09,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43803 states. [2018-07-24 14:11:09,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43803 states to 43803 states and 64624 transitions. [2018-07-24 14:11:09,833 INFO L78 Accepts]: Start accepts. Automaton has 43803 states and 64624 transitions. Word has length 218 [2018-07-24 14:11:09,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:09,833 INFO L471 AbstractCegarLoop]: Abstraction has 43803 states and 64624 transitions. [2018-07-24 14:11:09,833 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:11:09,833 INFO L276 IsEmpty]: Start isEmpty. Operand 43803 states and 64624 transitions. [2018-07-24 14:11:09,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-07-24 14:11:09,850 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:09,850 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:09,850 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 14:11:09,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1978518200, now seen corresponding path program 1 times [2018-07-24 14:11:09,851 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:09,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:09,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:09,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:09,852 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:11:10,366 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:11:10,366 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 14:11:10,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:10,380 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:11:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:10,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:11:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:11:11,387 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:11:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:11:11,604 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:11:11,604 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:11:11,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:11,620 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:11:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:11,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:11:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:11:11,882 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:11:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:11:12,091 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:11:12,092 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:11:12,092 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:11:12,093 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:11:12,093 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:11:12,093 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:11:12,093 INFO L87 Difference]: Start difference. First operand 43803 states and 64624 transitions. Second operand 9 states. [2018-07-24 14:11:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:31,392 INFO L93 Difference]: Finished difference Result 98993 states and 161549 transitions. [2018-07-24 14:11:31,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 14:11:31,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2018-07-24 14:11:31,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:31,682 INFO L225 Difference]: With dead ends: 98993 [2018-07-24 14:11:31,682 INFO L226 Difference]: Without dead ends: 55196 [2018-07-24 14:11:31,816 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 944 GetRequests, 924 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:11:31,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55196 states. [2018-07-24 14:11:33,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55196 to 53237. [2018-07-24 14:11:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53237 states. [2018-07-24 14:11:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53237 states to 53237 states and 76984 transitions. [2018-07-24 14:11:33,376 INFO L78 Accepts]: Start accepts. Automaton has 53237 states and 76984 transitions. Word has length 232 [2018-07-24 14:11:33,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:33,376 INFO L471 AbstractCegarLoop]: Abstraction has 53237 states and 76984 transitions. [2018-07-24 14:11:33,377 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:11:33,377 INFO L276 IsEmpty]: Start isEmpty. Operand 53237 states and 76984 transitions. [2018-07-24 14:11:33,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-07-24 14:11:33,407 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:33,408 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 14:11:33,408 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 14:11:33,408 INFO L82 PathProgramCache]: Analyzing trace with hash 220125820, now seen corresponding path program 1 times [2018-07-24 14:11:33,409 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:33,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:33,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:33,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:33,410 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 92 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:11:34,050 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:11:34,050 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 14:11:34,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:34,059 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:11:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:34,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:11:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-07-24 14:11:34,262 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:11:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 92 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:11:34,428 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:11:34,428 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 14:11:34,429 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:34,429 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:11:34,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:11:34,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:11:34,430 INFO L87 Difference]: Start difference. First operand 53237 states and 76984 transitions. Second operand 5 states. [2018-07-24 14:11:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:46,143 INFO L93 Difference]: Finished difference Result 108588 states and 174521 transitions. [2018-07-24 14:11:46,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:11:46,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2018-07-24 14:11:46,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:46,398 INFO L225 Difference]: With dead ends: 108588 [2018-07-24 14:11:46,398 INFO L226 Difference]: Without dead ends: 55357 [2018-07-24 14:11:46,577 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 487 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:11:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55357 states. [2018-07-24 14:11:47,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55357 to 54883. [2018-07-24 14:11:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54883 states. [2018-07-24 14:11:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54883 states to 54883 states and 78388 transitions. [2018-07-24 14:11:47,901 INFO L78 Accepts]: Start accepts. Automaton has 54883 states and 78388 transitions. Word has length 246 [2018-07-24 14:11:47,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:47,901 INFO L471 AbstractCegarLoop]: Abstraction has 54883 states and 78388 transitions. [2018-07-24 14:11:47,901 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:11:47,902 INFO L276 IsEmpty]: Start isEmpty. Operand 54883 states and 78388 transitions. [2018-07-24 14:11:47,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-24 14:11:47,918 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:47,919 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:47,919 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 14:11:47,919 INFO L82 PathProgramCache]: Analyzing trace with hash -902534885, now seen corresponding path program 1 times [2018-07-24 14:11:47,920 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:47,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:47,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:47,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:47,923 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 92 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:11:48,336 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:11:48,336 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 14:11:48,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:48,347 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:11:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:48,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:11:48,518 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-07-24 14:11:48,518 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:11:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 92 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:11:48,680 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:11:48,680 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-07-24 14:11:48,680 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:48,681 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:11:48,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:11:48,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:11:48,681 INFO L87 Difference]: Start difference. First operand 54883 states and 78388 transitions. Second operand 5 states. [2018-07-24 14:12:01,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:01,310 INFO L93 Difference]: Finished difference Result 162909 states and 257832 transitions. [2018-07-24 14:12:01,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:12:01,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2018-07-24 14:12:01,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:01,712 INFO L225 Difference]: With dead ends: 162909 [2018-07-24 14:12:01,712 INFO L226 Difference]: Without dead ends: 108032 [2018-07-24 14:12:01,887 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 496 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:12:01,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108032 states. [2018-07-24 14:12:04,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108032 to 103168. [2018-07-24 14:12:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103168 states. [2018-07-24 14:12:04,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103168 states to 103168 states and 150561 transitions. [2018-07-24 14:12:04,789 INFO L78 Accepts]: Start accepts. Automaton has 103168 states and 150561 transitions. Word has length 249 [2018-07-24 14:12:04,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:04,789 INFO L471 AbstractCegarLoop]: Abstraction has 103168 states and 150561 transitions. [2018-07-24 14:12:04,790 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:12:04,790 INFO L276 IsEmpty]: Start isEmpty. Operand 103168 states and 150561 transitions. [2018-07-24 14:12:04,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-07-24 14:12:04,801 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:04,801 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:04,801 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 14:12:04,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1717527190, now seen corresponding path program 1 times [2018-07-24 14:12:04,802 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:04,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:04,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:04,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:04,803 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:12:05,064 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:12:05,064 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:12:05,064 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:05,065 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:12:05,065 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:12:05,065 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:12:05,066 INFO L87 Difference]: Start difference. First operand 103168 states and 150561 transitions. Second operand 4 states. [2018-07-24 14:12:15,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:15,689 INFO L93 Difference]: Finished difference Result 240945 states and 369032 transitions. [2018-07-24 14:12:15,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:12:15,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 276 [2018-07-24 14:12:15,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:16,266 INFO L225 Difference]: With dead ends: 240945 [2018-07-24 14:12:16,267 INFO L226 Difference]: Without dead ends: 130280 [2018-07-24 14:12:16,575 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:12:16,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130280 states. [2018-07-24 14:12:18,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130280 to 130133. [2018-07-24 14:12:18,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130133 states. [2018-07-24 14:12:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130133 states to 130133 states and 181704 transitions. [2018-07-24 14:12:20,288 INFO L78 Accepts]: Start accepts. Automaton has 130133 states and 181704 transitions. Word has length 276 [2018-07-24 14:12:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:20,289 INFO L471 AbstractCegarLoop]: Abstraction has 130133 states and 181704 transitions. [2018-07-24 14:12:20,289 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:12:20,289 INFO L276 IsEmpty]: Start isEmpty. Operand 130133 states and 181704 transitions. [2018-07-24 14:12:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-24 14:12:20,307 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:20,308 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:20,308 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 14:12:20,308 INFO L82 PathProgramCache]: Analyzing trace with hash -852529587, now seen corresponding path program 1 times [2018-07-24 14:12:20,308 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:20,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:20,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:20,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:20,310 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:20,617 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:20,618 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:12:20,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:20,627 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:20,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:20,843 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:21,058 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:21,058 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:12:21,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:21,075 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:21,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:21,508 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:21,698 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:12:21,698 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:12:21,699 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:12:21,700 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:12:21,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:12:21,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:12:21,701 INFO L87 Difference]: Start difference. First operand 130133 states and 181704 transitions. Second operand 9 states. [2018-07-24 14:12:38,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:38,214 INFO L93 Difference]: Finished difference Result 269080 states and 387386 transitions. [2018-07-24 14:12:38,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:12:38,214 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 305 [2018-07-24 14:12:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:38,686 INFO L225 Difference]: With dead ends: 269080 [2018-07-24 14:12:38,686 INFO L226 Difference]: Without dead ends: 138953 [2018-07-24 14:12:40,271 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1213 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2018-07-24 14:12:40,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138953 states. [2018-07-24 14:12:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138953 to 132409. [2018-07-24 14:12:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132409 states. [2018-07-24 14:12:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132409 states to 132409 states and 157918 transitions. [2018-07-24 14:12:42,037 INFO L78 Accepts]: Start accepts. Automaton has 132409 states and 157918 transitions. Word has length 305 [2018-07-24 14:12:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:42,038 INFO L471 AbstractCegarLoop]: Abstraction has 132409 states and 157918 transitions. [2018-07-24 14:12:42,038 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:12:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 132409 states and 157918 transitions. [2018-07-24 14:12:42,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-24 14:12:42,053 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:42,054 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:12:42,054 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 14:12:42,054 INFO L82 PathProgramCache]: Analyzing trace with hash 2129262605, now seen corresponding path program 1 times [2018-07-24 14:12:42,054 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:42,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:42,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:42,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:42,055 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:43,842 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:12:43,843 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:12:43,843 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:43,843 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:12:43,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:12:43,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:12:43,844 INFO L87 Difference]: Start difference. First operand 132409 states and 157918 transitions. Second operand 4 states. [2018-07-24 14:13:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:00,924 INFO L93 Difference]: Finished difference Result 265276 states and 317981 transitions. [2018-07-24 14:13:00,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:13:00,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2018-07-24 14:13:00,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:01,228 INFO L225 Difference]: With dead ends: 265276 [2018-07-24 14:13:01,228 INFO L226 Difference]: Without dead ends: 132873 [2018-07-24 14:13:01,374 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:13:01,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132873 states. [2018-07-24 14:13:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132873 to 130514. [2018-07-24 14:13:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130514 states. [2018-07-24 14:13:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130514 states to 130514 states and 153544 transitions. [2018-07-24 14:13:07,366 INFO L78 Accepts]: Start accepts. Automaton has 130514 states and 153544 transitions. Word has length 328 [2018-07-24 14:13:07,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:07,367 INFO L471 AbstractCegarLoop]: Abstraction has 130514 states and 153544 transitions. [2018-07-24 14:13:07,367 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:13:07,367 INFO L276 IsEmpty]: Start isEmpty. Operand 130514 states and 153544 transitions. [2018-07-24 14:13:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-07-24 14:13:07,386 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:07,386 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:07,386 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:13:07,386 INFO L82 PathProgramCache]: Analyzing trace with hash 264360378, now seen corresponding path program 1 times [2018-07-24 14:13:07,386 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:07,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:07,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:07,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:07,387 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 9 proven. 86 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-07-24 14:13:08,325 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:08,325 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:13:08,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:08,341 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:08,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:09,117 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-07-24 14:13:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-07-24 14:13:09,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 92 proven. 144 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:13:10,365 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:13:10,365 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-07-24 14:13:10,365 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:10,366 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:13:10,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:13:10,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:13:10,367 INFO L87 Difference]: Start difference. First operand 130514 states and 153544 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 14:13:18,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 14:13:18,042 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:13:18,047 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:13:18,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:13:18 BoogieIcfgContainer [2018-07-24 14:13:18,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:13:18,048 INFO L168 Benchmark]: Toolchain (without parser) took 222959.74 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 750.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:13:18,049 INFO L168 Benchmark]: CDTParser took 0.22 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 14:13:18,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2386.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:13:18,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 258.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:13:18,051 INFO L168 Benchmark]: Boogie Preprocessor took 874.82 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 923.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-07-24 14:13:18,052 INFO L168 Benchmark]: RCFGBuilder took 10661.31 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 148.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -124.2 MB). Peak memory consumption was 724.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:13:18,053 INFO L168 Benchmark]: TraceAbstraction took 208772.43 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 702.9 MB. Max. memory is 7.1 GB. [2018-07-24 14:13:18,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2386.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 258.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 874.82 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 923.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10661.31 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 148.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -124.2 MB). Peak memory consumption was 724.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208772.43 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 702.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while BasicCegarLoop was constructing difference of abstraction (130514states) and interpolant automaton (currently 9 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (75882 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 208.6s OverallTime, 13 OverallIterations, 3 TraceHistogramMax, 172.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5192 SDtfs, 37677 SDslu, 2261 SDs, 0 SdLazy, 70630 SolverSat, 17013 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 135.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4708 GetRequests, 4581 SyntacticMatches, 25 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132409occurred 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: 19.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 16840 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 5145 NumberOfCodeBlocks, 5145 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 7410 ConstructedInterpolants, 0 QuantifiedInterpolants, 6413053 SizeOfPredicates, 10 NumberOfNonLiveVariables, 4152 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 31 InterpolantComputations, 12 PerfectInterpolantSequences, 3861/4583 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/Problem12_label24_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-13-18-070.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label24_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-13-18-070.csv Completed graceful shutdown