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_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:10:15,779 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:10:15,781 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:10:15,793 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:10:15,793 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:10:15,794 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:10:15,795 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:10:15,797 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:10:15,799 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:10:15,800 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:10:15,800 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:10:15,801 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:10:15,802 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:10:15,803 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:10:15,804 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:10:15,805 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:10:15,805 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:10:15,807 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:10:15,809 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:10:15,811 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:10:15,812 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:10:15,813 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:10:15,815 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:10:15,815 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:10:15,816 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:10:15,817 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:10:15,818 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:10:15,818 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:10:15,819 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:10:15,820 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:10:15,820 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:10:15,821 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:10:15,821 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:10:15,822 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:10:15,823 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:10:15,823 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:10:15,824 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 14:10:15,842 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:10:15,843 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:10:15,844 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:10:15,844 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:10:15,844 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:10:15,844 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:10:15,844 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:10:15,845 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:10:15,845 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:10:15,845 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:10:15,845 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:10:15,846 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:10:15,846 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:10:15,846 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:10:15,846 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:10:15,847 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:10:15,847 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:10:15,847 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:10:15,847 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:10:15,847 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:10:15,848 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:10:15,848 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:10:15,848 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:10:15,848 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:10:15,848 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:10:15,848 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:10:15,849 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:10:15,849 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:10:15,849 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:10:15,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:10:15,849 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:10:15,850 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:10:15,850 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:10:15,899 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:10:15,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:10:15,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:10:15,924 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:10:15,924 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:10:15,925 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label26_true-unreach-call.c [2018-07-24 14:10:16,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ec69b19/06309443e0944e7682ce333cd365e1ef/FLAGc7cb97bef [2018-07-24 14:10:16,722 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:10:16,723 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label26_true-unreach-call.c [2018-07-24 14:10:16,755 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ec69b19/06309443e0944e7682ce333cd365e1ef/FLAGc7cb97bef [2018-07-24 14:10:16,771 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ec69b19/06309443e0944e7682ce333cd365e1ef [2018-07-24 14:10:16,783 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:10:16,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:10:16,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:10:16,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:10:16,795 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:10:16,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:10:16" (1/1) ... [2018-07-24 14:10:16,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f918427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:16, skipping insertion in model container [2018-07-24 14:10:16,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:10:16" (1/1) ... [2018-07-24 14:10:17,198 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:10:18,244 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:10:18,261 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:10:18,983 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:10:19,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:19 WrapperNode [2018-07-24 14:10:19,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:10:19,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:10:19,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:10:19,241 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:10:19,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:19" (1/1) ... [2018-07-24 14:10:19,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:19" (1/1) ... [2018-07-24 14:10:19,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:10:19,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:10:19,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:10:19,550 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:10:20,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:19" (1/1) ... [2018-07-24 14:10:20,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:19" (1/1) ... [2018-07-24 14:10:20,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:19" (1/1) ... [2018-07-24 14:10:20,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:19" (1/1) ... [2018-07-24 14:10:20,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:19" (1/1) ... [2018-07-24 14:10:20,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:19" (1/1) ... [2018-07-24 14:10:20,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:19" (1/1) ... [2018-07-24 14:10:20,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:10:20,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:10:20,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:10:20,419 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:10:20,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:19" (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 14:10:20,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:10:20,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:10:20,494 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 14:10:20,494 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 14:10:20,494 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 14:10:20,495 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 14:10:20,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:10:20,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:10:20,495 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 14:10:20,495 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 14:10:20,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:10:20,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:10:20,496 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 14:10:20,497 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 14:10:31,329 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:10:31,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:10:31 BoogieIcfgContainer [2018-07-24 14:10:31,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:10:31,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:10:31,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:10:31,334 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:10:31,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:10:16" (1/3) ... [2018-07-24 14:10:31,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b07fbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:10:31, skipping insertion in model container [2018-07-24 14:10:31,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:10:19" (2/3) ... [2018-07-24 14:10:31,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b07fbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:10:31, skipping insertion in model container [2018-07-24 14:10:31,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:10:31" (3/3) ... [2018-07-24 14:10:31,338 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label26_true-unreach-call.c [2018-07-24 14:10:31,349 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:10:31,358 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:10:31,417 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:10:31,418 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:10:31,418 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:10:31,419 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:10:31,419 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:10:31,419 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:10:31,419 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:10:31,419 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:10:31,419 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:10:31,468 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 14:10:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-24 14:10:31,481 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:31,482 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] [2018-07-24 14:10:31,483 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 14:10:31,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1887974908, now seen corresponding path program 1 times [2018-07-24 14:10:31,490 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:31,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:31,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:31,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:31,545 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:32,029 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 14:10:32,032 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:10:32,033 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:10:32,033 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:32,040 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:10:32,057 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:10:32,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:10:32,061 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 14:10:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:10:44,001 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 14:10:44,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:10:44,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2018-07-24 14:10:44,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:10:44,046 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 14:10:44,046 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 14:10:44,058 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 14:10:44,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 14:10:44,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 14:10:44,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 14:10:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-07-24 14:10:44,229 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 52 [2018-07-24 14:10:44,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:10:44,230 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-07-24 14:10:44,230 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:10:44,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-07-24 14:10:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-07-24 14:10:44,241 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:10:44,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:44,242 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 14:10:44,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1350970366, now seen corresponding path program 1 times [2018-07-24 14:10:44,242 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:10:44,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:44,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:10:44,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:10:44,244 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:10:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:10:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:10:44,600 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:10:44,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:10:44,601 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:10:44,603 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:10:44,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:10:44,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:10:44,604 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 6 states. [2018-07-24 14:11:01,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:01,421 INFO L93 Difference]: Finished difference Result 6329 states and 11914 transitions. [2018-07-24 14:11:01,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:11:01,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-07-24 14:11:01,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:01,460 INFO L225 Difference]: With dead ends: 6329 [2018-07-24 14:11:01,461 INFO L226 Difference]: Without dead ends: 4731 [2018-07-24 14:11:01,471 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 14:11:01,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2018-07-24 14:11:01,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4702. [2018-07-24 14:11:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4702 states. [2018-07-24 14:11:01,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 7573 transitions. [2018-07-24 14:11:01,682 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 7573 transitions. Word has length 126 [2018-07-24 14:11:01,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:01,683 INFO L471 AbstractCegarLoop]: Abstraction has 4702 states and 7573 transitions. [2018-07-24 14:11:01,683 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:11:01,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 7573 transitions. [2018-07-24 14:11:01,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-24 14:11:01,695 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:01,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:01,695 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 14:11:01,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1923005790, now seen corresponding path program 1 times [2018-07-24 14:11:01,696 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:01,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:01,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:01,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:01,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:02,037 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:11:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:11:02,142 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:11:02,142 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 14:11:02,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:02,161 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:11:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:02,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:11:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:11:02,517 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:11:03,498 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 14:11:03,521 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:11:03,522 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 11 [2018-07-24 14:11:03,522 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:03,523 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:11:03,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:11:03,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:11:03,523 INFO L87 Difference]: Start difference. First operand 4702 states and 7573 transitions. Second operand 4 states. [2018-07-24 14:11:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:11,543 INFO L93 Difference]: Finished difference Result 14085 states and 23071 transitions. [2018-07-24 14:11:11,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:11:11,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2018-07-24 14:11:11,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:11,601 INFO L225 Difference]: With dead ends: 14085 [2018-07-24 14:11:11,601 INFO L226 Difference]: Without dead ends: 9389 [2018-07-24 14:11:11,623 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 251 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:11:11,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9389 states. [2018-07-24 14:11:11,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9389 to 9389. [2018-07-24 14:11:11,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9389 states. [2018-07-24 14:11:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9389 states to 9389 states and 13542 transitions. [2018-07-24 14:11:11,899 INFO L78 Accepts]: Start accepts. Automaton has 9389 states and 13542 transitions. Word has length 128 [2018-07-24 14:11:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:11,900 INFO L471 AbstractCegarLoop]: Abstraction has 9389 states and 13542 transitions. [2018-07-24 14:11:11,900 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:11:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 9389 states and 13542 transitions. [2018-07-24 14:11:11,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-24 14:11:11,906 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:11,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:11,906 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 14:11:11,907 INFO L82 PathProgramCache]: Analyzing trace with hash -280914902, now seen corresponding path program 1 times [2018-07-24 14:11:11,907 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:11,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:11,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:11,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:11,909 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:11:12,330 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:11:12,330 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:11:12,331 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:12,331 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:11:12,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:11:12,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:11:12,335 INFO L87 Difference]: Start difference. First operand 9389 states and 13542 transitions. Second operand 5 states. [2018-07-24 14:11:22,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:22,403 INFO L93 Difference]: Finished difference Result 28573 states and 42600 transitions. [2018-07-24 14:11:22,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:11:22,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-07-24 14:11:22,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:22,487 INFO L225 Difference]: With dead ends: 28573 [2018-07-24 14:11:22,487 INFO L226 Difference]: Without dead ends: 19190 [2018-07-24 14:11:22,516 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 14:11:22,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19190 states. [2018-07-24 14:11:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19190 to 19031. [2018-07-24 14:11:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19031 states. [2018-07-24 14:11:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19031 states to 19031 states and 26457 transitions. [2018-07-24 14:11:23,006 INFO L78 Accepts]: Start accepts. Automaton has 19031 states and 26457 transitions. Word has length 138 [2018-07-24 14:11:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:23,007 INFO L471 AbstractCegarLoop]: Abstraction has 19031 states and 26457 transitions. [2018-07-24 14:11:23,007 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:11:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 19031 states and 26457 transitions. [2018-07-24 14:11:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-24 14:11:23,011 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:23,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:23,012 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 14:11:23,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1379707749, now seen corresponding path program 1 times [2018-07-24 14:11:23,012 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:23,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:23,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:23,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:23,013 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:23,273 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:11:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:11:23,676 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:11:23,676 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:11:23,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:23,677 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:11:23,677 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:11:23,677 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:11:23,677 INFO L87 Difference]: Start difference. First operand 19031 states and 26457 transitions. Second operand 6 states. [2018-07-24 14:11:43,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:43,629 INFO L93 Difference]: Finished difference Result 63868 states and 95317 transitions. [2018-07-24 14:11:43,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:11:43,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-07-24 14:11:43,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:43,822 INFO L225 Difference]: With dead ends: 63868 [2018-07-24 14:11:43,823 INFO L226 Difference]: Without dead ends: 44843 [2018-07-24 14:11:43,925 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 14:11:43,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44843 states. [2018-07-24 14:11:44,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44843 to 44583. [2018-07-24 14:11:44,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44583 states. [2018-07-24 14:11:45,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44583 states to 44583 states and 63184 transitions. [2018-07-24 14:11:45,478 INFO L78 Accepts]: Start accepts. Automaton has 44583 states and 63184 transitions. Word has length 161 [2018-07-24 14:11:45,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:45,479 INFO L471 AbstractCegarLoop]: Abstraction has 44583 states and 63184 transitions. [2018-07-24 14:11:45,479 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:11:45,479 INFO L276 IsEmpty]: Start isEmpty. Operand 44583 states and 63184 transitions. [2018-07-24 14:11:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-24 14:11:45,485 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:45,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:45,486 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 14:11:45,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1126447603, now seen corresponding path program 1 times [2018-07-24 14:11:45,487 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:45,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:45,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:45,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:45,488 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:45,772 WARN L169 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:11:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:11:46,144 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:11:46,144 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:11:46,144 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:11:46,145 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:11:46,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:11:46,145 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:11:46,146 INFO L87 Difference]: Start difference. First operand 44583 states and 63184 transitions. Second operand 6 states. [2018-07-24 14:11:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:11:56,965 INFO L93 Difference]: Finished difference Result 100962 states and 151709 transitions. [2018-07-24 14:11:56,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:11:56,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-07-24 14:11:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:11:57,190 INFO L225 Difference]: With dead ends: 100962 [2018-07-24 14:11:57,190 INFO L226 Difference]: Without dead ends: 56385 [2018-07-24 14:11:57,289 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:11:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56385 states. [2018-07-24 14:11:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56385 to 56023. [2018-07-24 14:11:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56023 states. [2018-07-24 14:11:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56023 states to 56023 states and 78699 transitions. [2018-07-24 14:11:58,822 INFO L78 Accepts]: Start accepts. Automaton has 56023 states and 78699 transitions. Word has length 173 [2018-07-24 14:11:58,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:11:58,823 INFO L471 AbstractCegarLoop]: Abstraction has 56023 states and 78699 transitions. [2018-07-24 14:11:58,823 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:11:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 56023 states and 78699 transitions. [2018-07-24 14:11:58,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-07-24 14:11:58,842 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:11:58,843 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:11:58,843 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 14:11:58,843 INFO L82 PathProgramCache]: Analyzing trace with hash 694713204, now seen corresponding path program 1 times [2018-07-24 14:11:58,843 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:11:58,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:58,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:58,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:11:58,845 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:11:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:59,213 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:11:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:11:59,652 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:11:59,652 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 14:11:59,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:11:59,660 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:11:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:11:59,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:11:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-07-24 14:11:59,903 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:12:00,147 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:12:00,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 14:12:00,148 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:00,149 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:12:00,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:12:00,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:12:00,149 INFO L87 Difference]: Start difference. First operand 56023 states and 78699 transitions. Second operand 5 states. [2018-07-24 14:12:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:14,004 INFO L93 Difference]: Finished difference Result 142807 states and 215756 transitions. [2018-07-24 14:12:14,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:12:14,004 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 282 [2018-07-24 14:12:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:14,440 INFO L225 Difference]: With dead ends: 142807 [2018-07-24 14:12:14,440 INFO L226 Difference]: Without dead ends: 86790 [2018-07-24 14:12:14,629 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 558 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:12:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86790 states. [2018-07-24 14:12:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86790 to 86507. [2018-07-24 14:12:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86507 states. [2018-07-24 14:12:17,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86507 states to 86507 states and 122774 transitions. [2018-07-24 14:12:17,113 INFO L78 Accepts]: Start accepts. Automaton has 86507 states and 122774 transitions. Word has length 282 [2018-07-24 14:12:17,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:17,113 INFO L471 AbstractCegarLoop]: Abstraction has 86507 states and 122774 transitions. [2018-07-24 14:12:17,113 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:12:17,114 INFO L276 IsEmpty]: Start isEmpty. Operand 86507 states and 122774 transitions. [2018-07-24 14:12:17,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-07-24 14:12:17,135 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:17,136 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:12:17,136 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 14:12:17,136 INFO L82 PathProgramCache]: Analyzing trace with hash -476478008, now seen corresponding path program 1 times [2018-07-24 14:12:17,137 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:17,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:17,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:17,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:17,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:17,484 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:12:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 91 proven. 15 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 14:12:17,630 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:17,630 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 14:12:17,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:17,639 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:17,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:17,985 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:12:18,120 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:18,120 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 14:12:18,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:18,139 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:18,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 14:12:18,488 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-07-24 14:12:18,770 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 14:12:18,770 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-07-24 14:12:18,770 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:18,771 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:12:18,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:12:18,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:12:18,772 INFO L87 Difference]: Start difference. First operand 86507 states and 122774 transitions. Second operand 5 states. [2018-07-24 14:12:27,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:27,049 INFO L93 Difference]: Finished difference Result 190433 states and 276393 transitions. [2018-07-24 14:12:27,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:12:27,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 296 [2018-07-24 14:12:27,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:27,361 INFO L225 Difference]: With dead ends: 190433 [2018-07-24 14:12:27,362 INFO L226 Difference]: Without dead ends: 103932 [2018-07-24 14:12:27,494 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1174 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:12:27,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103932 states. [2018-07-24 14:12:28,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103932 to 103896. [2018-07-24 14:12:28,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103896 states. [2018-07-24 14:12:30,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103896 states to 103896 states and 144053 transitions. [2018-07-24 14:12:30,457 INFO L78 Accepts]: Start accepts. Automaton has 103896 states and 144053 transitions. Word has length 296 [2018-07-24 14:12:30,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:30,458 INFO L471 AbstractCegarLoop]: Abstraction has 103896 states and 144053 transitions. [2018-07-24 14:12:30,458 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:12:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 103896 states and 144053 transitions. [2018-07-24 14:12:30,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-07-24 14:12:30,481 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:30,481 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:12:30,482 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 14:12:30,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1278132253, now seen corresponding path program 1 times [2018-07-24 14:12:30,482 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:30,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:30,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:30,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:30,484 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 144 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:12:30,875 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:30,875 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 14:12:30,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:30,885 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:30,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 14:12:31,034 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 14:12:31,135 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:12:31,136 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-07-24 14:12:31,136 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:12:31,136 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:12:31,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:12:31,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:12:31,137 INFO L87 Difference]: Start difference. First operand 103896 states and 144053 transitions. Second operand 3 states. [2018-07-24 14:12:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:12:38,632 INFO L93 Difference]: Finished difference Result 207786 states and 289126 transitions. [2018-07-24 14:12:38,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:12:38,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 303 [2018-07-24 14:12:38,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:12:40,050 INFO L225 Difference]: With dead ends: 207786 [2018-07-24 14:12:40,051 INFO L226 Difference]: Without dead ends: 103896 [2018-07-24 14:12:40,188 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:12:40,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103896 states. [2018-07-24 14:12:41,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103896 to 103874. [2018-07-24 14:12:41,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103874 states. [2018-07-24 14:12:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103874 states to 103874 states and 132101 transitions. [2018-07-24 14:12:41,632 INFO L78 Accepts]: Start accepts. Automaton has 103874 states and 132101 transitions. Word has length 303 [2018-07-24 14:12:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:12:41,632 INFO L471 AbstractCegarLoop]: Abstraction has 103874 states and 132101 transitions. [2018-07-24 14:12:41,633 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:12:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 103874 states and 132101 transitions. [2018-07-24 14:12:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-07-24 14:12:41,664 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:12:41,664 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:12:41,665 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 14:12:41,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1940591774, now seen corresponding path program 1 times [2018-07-24 14:12:41,665 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:12:41,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:41,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:41,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:12:41,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:12:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:12:42,039 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:42,039 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 14:12:42,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:42,049 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:42,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:12:42,321 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:12:43,560 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:12:43,561 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:12:43,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:12:43,577 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:12:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:12:43,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:12:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:12:44,014 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:12:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 305 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 14:12:44,188 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:12:44,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:12:44,189 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:12:44,190 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:12:44,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:12:44,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:12:44,190 INFO L87 Difference]: Start difference. First operand 103874 states and 132101 transitions. Second operand 9 states. [2018-07-24 14:13:07,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:07,047 INFO L93 Difference]: Finished difference Result 276510 states and 390815 transitions. [2018-07-24 14:13:07,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 14:13:07,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 370 [2018-07-24 14:13:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:07,680 INFO L225 Difference]: With dead ends: 276510 [2018-07-24 14:13:07,680 INFO L226 Difference]: Without dead ends: 172642 [2018-07-24 14:13:07,884 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1498 GetRequests, 1476 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 14:13:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172642 states. [2018-07-24 14:13:14,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172642 to 172351. [2018-07-24 14:13:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172351 states. [2018-07-24 14:13:14,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172351 states to 172351 states and 227367 transitions. [2018-07-24 14:13:14,753 INFO L78 Accepts]: Start accepts. Automaton has 172351 states and 227367 transitions. Word has length 370 [2018-07-24 14:13:14,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:14,754 INFO L471 AbstractCegarLoop]: Abstraction has 172351 states and 227367 transitions. [2018-07-24 14:13:14,754 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:13:14,754 INFO L276 IsEmpty]: Start isEmpty. Operand 172351 states and 227367 transitions. [2018-07-24 14:13:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2018-07-24 14:13:14,985 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:14,985 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:13:14,986 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 14:13:14,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1163189554, now seen corresponding path program 1 times [2018-07-24 14:13:14,986 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:14,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:14,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:14,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:14,987 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 214 proven. 124 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 14:13:15,630 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:15,630 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:13:16,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:16,202 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:16,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-07-24 14:13:16,984 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 214 proven. 124 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 14:13:17,548 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:17,548 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:13:17,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:17,568 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:18,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-07-24 14:13:18,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 214 proven. 124 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 14:13:18,906 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:13:18,907 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 14:13:18,907 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:13:18,908 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:13:18,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:13:18,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:13:18,908 INFO L87 Difference]: Start difference. First operand 172351 states and 227367 transitions. Second operand 9 states. [2018-07-24 14:13:34,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:34,743 INFO L93 Difference]: Finished difference Result 356116 states and 552233 transitions. [2018-07-24 14:13:34,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 14:13:34,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 590 [2018-07-24 14:13:34,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:35,754 INFO L225 Difference]: With dead ends: 356116 [2018-07-24 14:13:35,754 INFO L226 Difference]: Without dead ends: 158362 [2018-07-24 14:13:36,220 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2386 GetRequests, 2361 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-07-24 14:13:36,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158362 states. [2018-07-24 14:13:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158362 to 155542. [2018-07-24 14:13:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155542 states. [2018-07-24 14:13:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155542 states to 155542 states and 221863 transitions. [2018-07-24 14:13:40,406 INFO L78 Accepts]: Start accepts. Automaton has 155542 states and 221863 transitions. Word has length 590 [2018-07-24 14:13:40,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:13:40,406 INFO L471 AbstractCegarLoop]: Abstraction has 155542 states and 221863 transitions. [2018-07-24 14:13:40,406 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:13:40,406 INFO L276 IsEmpty]: Start isEmpty. Operand 155542 states and 221863 transitions. [2018-07-24 14:13:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2018-07-24 14:13:40,681 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:13:40,681 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:13:40,681 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 14:13:40,682 INFO L82 PathProgramCache]: Analyzing trace with hash -682812291, now seen corresponding path program 1 times [2018-07-24 14:13:40,682 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:13:40,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:40,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:40,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:13:40,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:13:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:41,832 WARN L169 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:13:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 135 proven. 274 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-07-24 14:13:42,373 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:13:42,373 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:13:42,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:13:42,381 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:13:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:13:42,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:13:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2018-07-24 14:13:43,226 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:13:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 135 proven. 274 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-07-24 14:13:44,139 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:13:44,140 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 14:13:44,140 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:13:44,141 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:13:44,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:13:44,141 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:13:44,141 INFO L87 Difference]: Start difference. First operand 155542 states and 221863 transitions. Second operand 5 states. [2018-07-24 14:13:54,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:13:54,092 INFO L93 Difference]: Finished difference Result 339195 states and 491985 transitions. [2018-07-24 14:13:54,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:13:54,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 673 [2018-07-24 14:13:54,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:13:54,887 INFO L225 Difference]: With dead ends: 339195 [2018-07-24 14:13:54,887 INFO L226 Difference]: Without dead ends: 175931 [2018-07-24 14:13:55,416 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1355 GetRequests, 1340 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:13:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175931 states. [2018-07-24 14:13:58,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175931 to 173526. [2018-07-24 14:13:58,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173526 states. Received shutdown request... [2018-07-24 14:14:00,182 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:14:00,189 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:14:00,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:14:00 BoogieIcfgContainer [2018-07-24 14:14:00,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:14:00,190 INFO L168 Benchmark]: Toolchain (without parser) took 223406.52 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -718.1 MB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. [2018-07-24 14:14:00,191 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 14:14:00,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2454.23 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 14:14:00,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 307.88 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 14:14:00,193 INFO L168 Benchmark]: Boogie Preprocessor took 869.20 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 929.0 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 128.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:14:00,194 INFO L168 Benchmark]: RCFGBuilder took 10911.22 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 158.3 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -126.7 MB). Peak memory consumption was 740.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:14:00,199 INFO L168 Benchmark]: TraceAbstraction took 208858.57 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.1 GB). Free memory was 2.5 GB in the beginning and 2.1 GB in the end (delta: 327.2 MB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. [2018-07-24 14:14:00,205 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 2454.23 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 307.88 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 869.20 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 929.0 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 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10911.22 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 158.3 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -126.7 MB). Peak memory consumption was 740.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208858.57 ms. Allocated memory was 2.6 GB in the beginning and 4.8 GB in the end (delta: 2.1 GB). Free memory was 2.5 GB in the beginning and 2.1 GB in the end (delta: 327.2 MB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 147). Cancelled while ReachableStatesComputation was computing reachable states (173526 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 208.7s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 163.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2842 SDtfs, 40257 SDslu, 1952 SDs, 0 SdLazy, 65182 SolverSat, 18657 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 120.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7921 GetRequests, 7779 SyntacticMatches, 33 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172351occurred in iteration=10, 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: 26.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 4262 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 7190 NumberOfCodeBlocks, 7190 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 11056 ConstructedInterpolants, 0 QuantifiedInterpolants, 10989667 SizeOfPredicates, 11 NumberOfNonLiveVariables, 6292 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 32 InterpolantComputations, 11 PerfectInterpolantSequences, 6688/7887 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_label26_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-14-00-225.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label26_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-14-00-225.csv Completed graceful shutdown