java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label48_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:00:09,585 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:00:09,587 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:00:09,603 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:00:09,603 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:00:09,605 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:00:09,606 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:00:09,608 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:00:09,610 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:00:09,611 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:00:09,612 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:00:09,612 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:00:09,613 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:00:09,614 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:00:09,615 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:00:09,616 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:00:09,617 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:00:09,618 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:00:09,620 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:00:09,622 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:00:09,623 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:00:09,626 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:00:09,630 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:00:09,630 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:00:09,630 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:00:09,634 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:00:09,635 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:00:09,636 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:00:09,637 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:00:09,638 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:00:09,638 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:00:09,641 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:00:09,641 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:00:09,642 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:00:09,643 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:00:09,644 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:00:09,645 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 12:00:09,660 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:00:09,660 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:00:09,661 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:00:09,661 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:00:09,661 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:00:09,662 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:00:09,662 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:00:09,662 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:00:09,662 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:00:09,662 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:00:09,662 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:00:09,663 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:00:09,663 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:00:09,664 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:00:09,664 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:00:09,664 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:00:09,664 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:00:09,664 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:00:09,665 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:00:09,665 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:00:09,665 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:00:09,665 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:00:09,665 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:00:09,666 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:00:09,666 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:00:09,666 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:00:09,666 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:00:09,667 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:00:09,667 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:00:09,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:00:09,667 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:00:09,667 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:00:09,668 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:00:09,714 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:00:09,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:00:09,736 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:00:09,738 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:00:09,738 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:00:09,739 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label48_false-unreach-call.c [2018-07-24 12:00:10,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d603ae8d6/aa34dcfd13f44e8b971941d675224f76/FLAG424a5fbee [2018-07-24 12:00:10,627 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:00:10,628 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label48_false-unreach-call.c [2018-07-24 12:00:10,671 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d603ae8d6/aa34dcfd13f44e8b971941d675224f76/FLAG424a5fbee [2018-07-24 12:00:10,692 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d603ae8d6/aa34dcfd13f44e8b971941d675224f76 [2018-07-24 12:00:10,705 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:00:10,707 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:00:10,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:00:10,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:00:10,717 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:00:10,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:00:10" (1/1) ... [2018-07-24 12:00:10,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a7130f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:10, skipping insertion in model container [2018-07-24 12:00:10,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:00:10" (1/1) ... [2018-07-24 12:00:11,068 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:00:12,282 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:00:12,300 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:00:13,288 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:00:13,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:13 WrapperNode [2018-07-24 12:00:13,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:00:13,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:00:13,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:00:13,693 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:00:13,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:13" (1/1) ... [2018-07-24 12:00:13,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:13" (1/1) ... [2018-07-24 12:00:13,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:00:13,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:00:13,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:00:13,989 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:00:14,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:13" (1/1) ... [2018-07-24 12:00:14,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:13" (1/1) ... [2018-07-24 12:00:14,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:13" (1/1) ... [2018-07-24 12:00:14,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:13" (1/1) ... [2018-07-24 12:00:15,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:13" (1/1) ... [2018-07-24 12:00:15,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:13" (1/1) ... [2018-07-24 12:00:15,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:13" (1/1) ... [2018-07-24 12:00:15,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:00:15,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:00:15,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:00:15,327 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:00:15,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:13" (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 12:00:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:00:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:00:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 12:00:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 12:00:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:00:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:00:15,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:00:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:00:15,410 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:00:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:00:15,410 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:00:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:00:15,411 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:00:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:00:31,817 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:00:31,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:00:31 BoogieIcfgContainer [2018-07-24 12:00:31,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:00:31,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:00:31,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:00:31,822 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:00:31,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:00:10" (1/3) ... [2018-07-24 12:00:31,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a4fa50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:00:31, skipping insertion in model container [2018-07-24 12:00:31,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:00:13" (2/3) ... [2018-07-24 12:00:31,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a4fa50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:00:31, skipping insertion in model container [2018-07-24 12:00:31,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:00:31" (3/3) ... [2018-07-24 12:00:31,826 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label48_false-unreach-call.c [2018-07-24 12:00:31,835 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:00:31,846 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:00:31,907 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:00:31,908 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:00:31,908 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:00:31,909 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:00:31,909 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:00:31,909 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:00:31,909 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:00:31,909 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:00:31,909 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:00:31,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 12:00:31,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-07-24 12:00:31,956 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:00:31,957 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:00:31,957 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:00:31,963 INFO L82 PathProgramCache]: Analyzing trace with hash -521254589, now seen corresponding path program 1 times [2018-07-24 12:00:31,968 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:00:32,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:32,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:00:32,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:32,018 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:00:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:00:32,360 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:00:32,459 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 12:00:32,463 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:00:32,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:00:32,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:00:32,470 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:00:32,485 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:00:32,485 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:00:32,488 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-07-24 12:00:43,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:00:43,950 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-07-24 12:00:43,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:00:43,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-07-24 12:00:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:00:43,990 INFO L225 Difference]: With dead ends: 3097 [2018-07-24 12:00:43,990 INFO L226 Difference]: Without dead ends: 1975 [2018-07-24 12:00:44,000 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:00:44,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-07-24 12:00:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-07-24 12:00:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-07-24 12:00:44,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-07-24 12:00:44,157 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 13 [2018-07-24 12:00:44,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:00:44,158 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-07-24 12:00:44,158 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:00:44,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-07-24 12:00:44,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-24 12:00:44,163 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:00:44,163 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:00:44,164 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:00:44,164 INFO L82 PathProgramCache]: Analyzing trace with hash 2088989138, now seen corresponding path program 1 times [2018-07-24 12:00:44,164 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:00:44,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:44,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:00:44,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:00:44,166 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:00:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:00:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:00:44,452 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:00:44,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:00:44,452 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:00:44,454 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:00:44,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:00:44,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:00:44,455 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-07-24 12:01:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:01:02,121 INFO L93 Difference]: Finished difference Result 5737 states and 9691 transitions. [2018-07-24 12:01:02,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:01:02,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2018-07-24 12:01:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:01:02,147 INFO L225 Difference]: With dead ends: 5737 [2018-07-24 12:01:02,147 INFO L226 Difference]: Without dead ends: 3769 [2018-07-24 12:01:02,154 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:01:02,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2018-07-24 12:01:02,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3685. [2018-07-24 12:01:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3685 states. [2018-07-24 12:01:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 5659 transitions. [2018-07-24 12:01:02,278 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 5659 transitions. Word has length 89 [2018-07-24 12:01:02,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:01:02,279 INFO L471 AbstractCegarLoop]: Abstraction has 3685 states and 5659 transitions. [2018-07-24 12:01:02,279 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:01:02,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 5659 transitions. [2018-07-24 12:01:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-07-24 12:01:02,288 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:01:02,288 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:01:02,288 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:01:02,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1000001326, now seen corresponding path program 1 times [2018-07-24 12:01:02,289 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:01:02,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:02,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:02,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:02,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:01:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:01:02,706 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:01:02,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:01:02,706 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:01:02,707 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:01:02,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:01:02,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:01:02,708 INFO L87 Difference]: Start difference. First operand 3685 states and 5659 transitions. Second operand 6 states. [2018-07-24 12:01:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:01:13,099 INFO L93 Difference]: Finished difference Result 10870 states and 17247 transitions. [2018-07-24 12:01:13,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:01:13,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-07-24 12:01:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:01:13,138 INFO L225 Difference]: With dead ends: 10870 [2018-07-24 12:01:13,139 INFO L226 Difference]: Without dead ends: 7191 [2018-07-24 12:01:13,153 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:01:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7191 states. [2018-07-24 12:01:13,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7191 to 7142. [2018-07-24 12:01:13,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7142 states. [2018-07-24 12:01:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7142 states to 7142 states and 10338 transitions. [2018-07-24 12:01:13,339 INFO L78 Accepts]: Start accepts. Automaton has 7142 states and 10338 transitions. Word has length 103 [2018-07-24 12:01:13,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:01:13,341 INFO L471 AbstractCegarLoop]: Abstraction has 7142 states and 10338 transitions. [2018-07-24 12:01:13,341 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:01:13,341 INFO L276 IsEmpty]: Start isEmpty. Operand 7142 states and 10338 transitions. [2018-07-24 12:01:13,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-24 12:01:13,347 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:01:13,347 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:01:13,351 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:01:13,352 INFO L82 PathProgramCache]: Analyzing trace with hash -546267826, now seen corresponding path program 1 times [2018-07-24 12:01:13,352 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:01:13,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:13,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:13,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:13,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:01:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:13,694 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:01:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:01:13,877 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:01:13,877 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:01:13,878 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:01:13,878 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:01:13,878 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:01:13,879 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:01:13,879 INFO L87 Difference]: Start difference. First operand 7142 states and 10338 transitions. Second operand 6 states. [2018-07-24 12:01:26,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:01:26,387 INFO L93 Difference]: Finished difference Result 24010 states and 36794 transitions. [2018-07-24 12:01:26,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:01:26,394 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-07-24 12:01:26,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:01:26,474 INFO L225 Difference]: With dead ends: 24010 [2018-07-24 12:01:26,475 INFO L226 Difference]: Without dead ends: 16874 [2018-07-24 12:01:26,517 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:01:26,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16874 states. [2018-07-24 12:01:26,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16874 to 16667. [2018-07-24 12:01:26,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16667 states. [2018-07-24 12:01:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16667 states to 16667 states and 23873 transitions. [2018-07-24 12:01:26,938 INFO L78 Accepts]: Start accepts. Automaton has 16667 states and 23873 transitions. Word has length 119 [2018-07-24 12:01:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:01:26,939 INFO L471 AbstractCegarLoop]: Abstraction has 16667 states and 23873 transitions. [2018-07-24 12:01:26,939 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:01:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 16667 states and 23873 transitions. [2018-07-24 12:01:26,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-24 12:01:26,942 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:01:26,942 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:01:26,942 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:01:26,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1279297298, now seen corresponding path program 1 times [2018-07-24 12:01:26,943 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:01:26,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:26,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:26,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:26,944 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:01:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:01:27,273 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:01:27,273 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:01:27,274 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:01:27,274 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:01:27,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:01:27,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:01:27,275 INFO L87 Difference]: Start difference. First operand 16667 states and 23873 transitions. Second operand 5 states. [2018-07-24 12:01:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:01:58,196 INFO L93 Difference]: Finished difference Result 55138 states and 84034 transitions. [2018-07-24 12:01:58,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:01:58,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-07-24 12:01:58,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:01:58,340 INFO L225 Difference]: With dead ends: 55138 [2018-07-24 12:01:58,341 INFO L226 Difference]: Without dead ends: 38477 [2018-07-24 12:01:58,407 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:01:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38477 states. [2018-07-24 12:01:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38477 to 38219. [2018-07-24 12:01:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38219 states. [2018-07-24 12:01:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38219 states to 38219 states and 55854 transitions. [2018-07-24 12:01:59,409 INFO L78 Accepts]: Start accepts. Automaton has 38219 states and 55854 transitions. Word has length 121 [2018-07-24 12:01:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:01:59,409 INFO L471 AbstractCegarLoop]: Abstraction has 38219 states and 55854 transitions. [2018-07-24 12:01:59,410 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:01:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 38219 states and 55854 transitions. [2018-07-24 12:01:59,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-07-24 12:01:59,412 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:01:59,412 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:01:59,413 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:01:59,413 INFO L82 PathProgramCache]: Analyzing trace with hash 422265250, now seen corresponding path program 1 times [2018-07-24 12:01:59,413 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:01:59,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:59,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:01:59,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:01:59,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:01:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:01:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:01:59,551 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:01:59,551 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:01:59,551 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:01:59,551 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:01:59,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:01:59,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:01:59,552 INFO L87 Difference]: Start difference. First operand 38219 states and 55854 transitions. Second operand 3 states. [2018-07-24 12:02:12,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:02:12,486 INFO L93 Difference]: Finished difference Result 92226 states and 141028 transitions. [2018-07-24 12:02:12,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:02:12,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2018-07-24 12:02:12,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:02:12,666 INFO L225 Difference]: With dead ends: 92226 [2018-07-24 12:02:12,666 INFO L226 Difference]: Without dead ends: 54013 [2018-07-24 12:02:12,767 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:02:12,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54013 states. [2018-07-24 12:02:13,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54013 to 53966. [2018-07-24 12:02:13,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53966 states. [2018-07-24 12:02:13,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53966 states to 53966 states and 77102 transitions. [2018-07-24 12:02:13,860 INFO L78 Accepts]: Start accepts. Automaton has 53966 states and 77102 transitions. Word has length 129 [2018-07-24 12:02:13,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:02:13,861 INFO L471 AbstractCegarLoop]: Abstraction has 53966 states and 77102 transitions. [2018-07-24 12:02:13,861 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:02:13,861 INFO L276 IsEmpty]: Start isEmpty. Operand 53966 states and 77102 transitions. [2018-07-24 12:02:13,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-07-24 12:02:13,868 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:02:13,869 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:02:13,869 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:02:13,869 INFO L82 PathProgramCache]: Analyzing trace with hash -105725439, now seen corresponding path program 1 times [2018-07-24 12:02:13,870 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:02:13,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:02:13,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:02:13,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:02:13,874 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:02:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:02:14,177 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:02:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:02:14,607 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:02:14,607 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:02:14,607 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:02:14,614 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:02:14,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:02:14,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:02:14,615 INFO L87 Difference]: Start difference. First operand 53966 states and 77102 transitions. Second operand 6 states. [2018-07-24 12:02:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:02:24,649 INFO L93 Difference]: Finished difference Result 119183 states and 176045 transitions. [2018-07-24 12:02:24,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:02:24,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 207 [2018-07-24 12:02:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:02:24,875 INFO L225 Difference]: With dead ends: 119183 [2018-07-24 12:02:24,875 INFO L226 Difference]: Without dead ends: 65223 [2018-07-24 12:02:24,971 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 12:02:25,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65223 states. [2018-07-24 12:02:26,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65223 to 65099. [2018-07-24 12:02:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65099 states. [2018-07-24 12:02:26,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65099 states to 65099 states and 88937 transitions. [2018-07-24 12:02:26,255 INFO L78 Accepts]: Start accepts. Automaton has 65099 states and 88937 transitions. Word has length 207 [2018-07-24 12:02:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:02:26,256 INFO L471 AbstractCegarLoop]: Abstraction has 65099 states and 88937 transitions. [2018-07-24 12:02:26,256 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:02:26,256 INFO L276 IsEmpty]: Start isEmpty. Operand 65099 states and 88937 transitions. [2018-07-24 12:02:26,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-24 12:02:26,265 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:02:26,265 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:26,266 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:02:26,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1376404567, now seen corresponding path program 1 times [2018-07-24 12:02:26,266 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:02:26,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:02:26,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:02:26,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:02:26,268 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:02:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:02:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 93 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:02:27,085 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:02:27,085 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 12:02:27,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:02:27,104 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:02:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:02:27,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:02:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 12:02:27,407 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:02:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 12:02:27,868 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:02:27,868 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-07-24 12:02:27,868 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:02:27,869 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:02:27,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:02:27,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:02:27,870 INFO L87 Difference]: Start difference. First operand 65099 states and 88937 transitions. Second operand 3 states. [2018-07-24 12:02:37,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:02:37,105 INFO L93 Difference]: Finished difference Result 130193 states and 178075 transitions. [2018-07-24 12:02:37,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:02:37,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2018-07-24 12:02:37,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:02:37,479 INFO L225 Difference]: With dead ends: 130193 [2018-07-24 12:02:37,480 INFO L226 Difference]: Without dead ends: 65100 [2018-07-24 12:02:37,746 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 448 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:02:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65100 states. [2018-07-24 12:02:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65100 to 61880. [2018-07-24 12:02:39,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61880 states. [2018-07-24 12:02:39,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61880 states to 61880 states and 76049 transitions. [2018-07-24 12:02:39,755 INFO L78 Accepts]: Start accepts. Automaton has 61880 states and 76049 transitions. Word has length 224 [2018-07-24 12:02:39,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:02:39,756 INFO L471 AbstractCegarLoop]: Abstraction has 61880 states and 76049 transitions. [2018-07-24 12:02:39,756 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:02:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand 61880 states and 76049 transitions. [2018-07-24 12:02:39,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-07-24 12:02:39,766 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:02:39,767 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:02:39,767 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:02:39,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1076020632, now seen corresponding path program 1 times [2018-07-24 12:02:39,768 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:02:39,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:02:39,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:02:39,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:02:39,769 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:02:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:02:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-07-24 12:02:40,064 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:02:40,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:02:40,065 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:02:40,065 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:02:40,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:02:40,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:02:40,066 INFO L87 Difference]: Start difference. First operand 61880 states and 76049 transitions. Second operand 3 states. [2018-07-24 12:02:52,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:02:52,768 INFO L93 Difference]: Finished difference Result 123784 states and 152638 transitions. [2018-07-24 12:02:52,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:02:52,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 261 [2018-07-24 12:02:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:02:52,934 INFO L225 Difference]: With dead ends: 123784 [2018-07-24 12:02:52,934 INFO L226 Difference]: Without dead ends: 61910 [2018-07-24 12:02:53,034 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:02:53,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61910 states. [2018-07-24 12:02:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61910 to 61873. [2018-07-24 12:02:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61873 states. [2018-07-24 12:02:54,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61873 states to 61873 states and 71836 transitions. [2018-07-24 12:02:54,417 INFO L78 Accepts]: Start accepts. Automaton has 61873 states and 71836 transitions. Word has length 261 [2018-07-24 12:02:54,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:02:54,417 INFO L471 AbstractCegarLoop]: Abstraction has 61873 states and 71836 transitions. [2018-07-24 12:02:54,418 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:02:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 61873 states and 71836 transitions. [2018-07-24 12:02:54,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-07-24 12:02:54,431 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:02:54,431 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:02:54,432 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:02:54,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1726684470, now seen corresponding path program 1 times [2018-07-24 12:02:54,432 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:02:54,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:02:54,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:02:54,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:02:54,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:02:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:02:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 186 proven. 71 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 12:02:55,138 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:02:55,138 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 12:02:55,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:02:55,164 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:02:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:02:55,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:02:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 12:02:55,749 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:02:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 12:02:56,237 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:02:56,237 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:02:56,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:02:56,255 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:02:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:02:56,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:02:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 186 proven. 6 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 12:02:56,621 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:02:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 188 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 12:02:57,238 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:02:57,238 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 12:02:57,239 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:02:57,239 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:02:57,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:02:57,240 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:02:57,240 INFO L87 Difference]: Start difference. First operand 61873 states and 71836 transitions. Second operand 9 states. [2018-07-24 12:03:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:03:20,036 INFO L93 Difference]: Finished difference Result 158191 states and 204316 transitions. [2018-07-24 12:03:20,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 12:03:20,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 288 [2018-07-24 12:03:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:03:20,355 INFO L225 Difference]: With dead ends: 158191 [2018-07-24 12:03:20,355 INFO L226 Difference]: Without dead ends: 96324 [2018-07-24 12:03:21,049 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1152 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-07-24 12:03:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96324 states. [2018-07-24 12:03:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96324 to 96090. [2018-07-24 12:03:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96090 states. [2018-07-24 12:03:22,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96090 states to 96090 states and 118269 transitions. [2018-07-24 12:03:22,642 INFO L78 Accepts]: Start accepts. Automaton has 96090 states and 118269 transitions. Word has length 288 [2018-07-24 12:03:22,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:03:22,643 INFO L471 AbstractCegarLoop]: Abstraction has 96090 states and 118269 transitions. [2018-07-24 12:03:22,643 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:03:22,643 INFO L276 IsEmpty]: Start isEmpty. Operand 96090 states and 118269 transitions. [2018-07-24 12:03:22,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-07-24 12:03:22,658 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:03:22,658 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:22,659 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:03:22,659 INFO L82 PathProgramCache]: Analyzing trace with hash 541711018, now seen corresponding path program 1 times [2018-07-24 12:03:22,659 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:03:22,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:22,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:22,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:22,660 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:03:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 12:03:22,899 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:03:22,899 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:03:22,899 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:03:22,900 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:03:22,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:03:22,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:03:22,900 INFO L87 Difference]: Start difference. First operand 96090 states and 118269 transitions. Second operand 3 states. [2018-07-24 12:03:32,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:03:32,171 INFO L93 Difference]: Finished difference Result 231010 states and 282425 transitions. [2018-07-24 12:03:32,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:03:32,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 287 [2018-07-24 12:03:32,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:03:32,495 INFO L225 Difference]: With dead ends: 231010 [2018-07-24 12:03:32,495 INFO L226 Difference]: Without dead ends: 124523 [2018-07-24 12:03:32,681 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:03:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124523 states. [2018-07-24 12:03:33,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124523 to 123698. [2018-07-24 12:03:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123698 states. [2018-07-24 12:03:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123698 states to 123698 states and 148485 transitions. [2018-07-24 12:03:34,184 INFO L78 Accepts]: Start accepts. Automaton has 123698 states and 148485 transitions. Word has length 287 [2018-07-24 12:03:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:03:34,185 INFO L471 AbstractCegarLoop]: Abstraction has 123698 states and 148485 transitions. [2018-07-24 12:03:34,185 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:03:34,185 INFO L276 IsEmpty]: Start isEmpty. Operand 123698 states and 148485 transitions. [2018-07-24 12:03:34,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-07-24 12:03:34,199 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:03:34,199 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:03:34,199 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:03:34,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1723705328, now seen corresponding path program 1 times [2018-07-24 12:03:34,200 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:03:34,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:34,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:34,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:34,201 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:03:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 12:03:34,484 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:03:34,484 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:03:34,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:34,493 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:03:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:34,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:03:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 12:03:34,834 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:03:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 12:03:35,000 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:03:35,000 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:03:35,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:35,017 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:03:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:35,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:03:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 12:03:36,105 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:03:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 12:03:36,249 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:03:36,249 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:03:36,249 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:03:36,250 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:03:36,250 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:03:36,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:03:36,251 INFO L87 Difference]: Start difference. First operand 123698 states and 148485 transitions. Second operand 9 states. [2018-07-24 12:03:54,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:03:54,810 INFO L93 Difference]: Finished difference Result 250185 states and 302002 transitions. [2018-07-24 12:03:54,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 12:03:54,811 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 307 [2018-07-24 12:03:54,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:03:55,083 INFO L225 Difference]: With dead ends: 250185 [2018-07-24 12:03:55,084 INFO L226 Difference]: Without dead ends: 121675 [2018-07-24 12:03:55,285 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1226 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:03:55,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121675 states. [2018-07-24 12:03:56,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121675 to 121438. [2018-07-24 12:03:56,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121438 states. [2018-07-24 12:03:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121438 states to 121438 states and 138389 transitions. [2018-07-24 12:03:57,982 INFO L78 Accepts]: Start accepts. Automaton has 121438 states and 138389 transitions. Word has length 307 [2018-07-24 12:03:57,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:03:57,982 INFO L471 AbstractCegarLoop]: Abstraction has 121438 states and 138389 transitions. [2018-07-24 12:03:57,982 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:03:57,982 INFO L276 IsEmpty]: Start isEmpty. Operand 121438 states and 138389 transitions. [2018-07-24 12:03:57,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-07-24 12:03:57,997 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:03:57,997 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:03:57,997 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:03:57,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1901096688, now seen corresponding path program 1 times [2018-07-24 12:03:57,998 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:03:57,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:57,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:57,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:03:57,999 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:03:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-07-24 12:03:58,235 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:03:58,235 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 12:03:58,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:03:58,243 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:03:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:03:58,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:03:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-07-24 12:03:58,419 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:03:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-07-24 12:03:58,511 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:03:58,512 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-07-24 12:03:58,512 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:03:58,512 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:03:58,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:03:58,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:03:58,513 INFO L87 Difference]: Start difference. First operand 121438 states and 138389 transitions. Second operand 3 states. Received shutdown request... [2018-07-24 12:04:03,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:04:03,260 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:04:03,266 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:04:03,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:04:03 BoogieIcfgContainer [2018-07-24 12:04:03,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:04:03,268 INFO L168 Benchmark]: Toolchain (without parser) took 232562.38 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 225.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 12:04:03,269 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:04:03,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2983.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-07-24 12:04:03,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 295.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:04:03,271 INFO L168 Benchmark]: Boogie Preprocessor took 1337.75 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:04:03,272 INFO L168 Benchmark]: RCFGBuilder took 16490.96 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 145.2 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 98.5 MB). Peak memory consumption was 747.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:04:03,273 INFO L168 Benchmark]: TraceAbstraction took 211448.34 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 853.0 MB). Free memory was 2.3 GB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-24 12:04:03,278 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2983.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 295.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1337.75 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16490.96 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 145.2 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 98.5 MB). Peak memory consumption was 747.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211448.34 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 853.0 MB). Free memory was 2.3 GB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 30). Cancelled while BasicCegarLoop was constructing difference of abstraction (121438states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (116164 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 211.3s OverallTime, 13 OverallIterations, 4 TraceHistogramMax, 187.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11837 SDtfs, 40694 SDslu, 5824 SDs, 0 SdLazy, 66547 SolverSat, 15314 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 154.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3570 GetRequests, 3477 SyntacticMatches, 16 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123698occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 5323 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 4190 NumberOfCodeBlocks, 4190 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 5893 ConstructedInterpolants, 0 QuantifiedInterpolants, 3469116 SizeOfPredicates, 14 NumberOfNonLiveVariables, 3232 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 25 InterpolantComputations, 12 PerfectInterpolantSequences, 3685/3788 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label48_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-04-03-292.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label48_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-04-03-292.csv Completed graceful shutdown