java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 12:27:20,684 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 12:27:20,686 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 12:27:20,699 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 12:27:20,699 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 12:27:20,700 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 12:27:20,701 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 12:27:20,703 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 12:27:20,705 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 12:27:20,706 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 12:27:20,706 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 12:27:20,707 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 12:27:20,708 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 12:27:20,709 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 12:27:20,710 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 12:27:20,711 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 12:27:20,712 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 12:27:20,713 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 12:27:20,716 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 12:27:20,717 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 12:27:20,718 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 12:27:20,719 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 12:27:20,722 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 12:27:20,722 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 12:27:20,722 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 12:27:20,723 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 12:27:20,724 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 12:27:20,725 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 12:27:20,726 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 12:27:20,728 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 12:27:20,728 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 12:27:20,729 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 12:27:20,729 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 12:27:20,731 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 12:27:20,732 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 12:27:20,733 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 12:27:20,733 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 [2018-08-07 12:27:20,749 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 12:27:20,749 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 12:27:20,750 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 12:27:20,750 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 12:27:20,750 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 12:27:20,750 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 12:27:20,751 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 12:27:20,751 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 12:27:20,751 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 12:27:20,751 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 12:27:20,751 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 12:27:20,752 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 12:27:20,752 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 12:27:20,752 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 12:27:20,752 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 12:27:20,753 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 12:27:20,753 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 12:27:20,753 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 12:27:20,753 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 12:27:20,753 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 12:27:20,754 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 12:27:20,754 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 12:27:20,754 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 12:27:20,754 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 12:27:20,754 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 12:27:20,755 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 12:27:20,755 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 12:27:20,755 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 12:27:20,755 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 12:27:20,755 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 12:27:20,755 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 12:27:20,756 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 12:27:20,756 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 12:27:20,814 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 12:27:20,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 12:27:20,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 12:27:20,832 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 12:27:20,832 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 12:27:20,833 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c [2018-08-07 12:27:21,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f50acdaef/d4ef733a8e1c41639dcead64cedb236b/FLAG31b23960b [2018-08-07 12:27:21,691 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 12:27:21,692 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c [2018-08-07 12:27:21,743 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f50acdaef/d4ef733a8e1c41639dcead64cedb236b/FLAG31b23960b [2018-08-07 12:27:21,765 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f50acdaef/d4ef733a8e1c41639dcead64cedb236b [2018-08-07 12:27:21,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 12:27:21,782 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 12:27:21,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 12:27:21,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 12:27:21,793 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 12:27:21,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:27:21" (1/1) ... [2018-08-07 12:27:21,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c430e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:21, skipping insertion in model container [2018-08-07 12:27:21,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:27:21" (1/1) ... [2018-08-07 12:27:22,192 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 12:27:23,417 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:27:23,437 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 12:27:24,339 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:27:24,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:24 WrapperNode [2018-08-07 12:27:24,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 12:27:24,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 12:27:24,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 12:27:24,703 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 12:27:24,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:24" (1/1) ... [2018-08-07 12:27:24,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:24" (1/1) ... [2018-08-07 12:27:25,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 12:27:25,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 12:27:25,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 12:27:25,073 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 12:27:25,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:24" (1/1) ... [2018-08-07 12:27:25,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:24" (1/1) ... [2018-08-07 12:27:26,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:24" (1/1) ... [2018-08-07 12:27:26,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:24" (1/1) ... [2018-08-07 12:27:26,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:24" (1/1) ... [2018-08-07 12:27:26,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:24" (1/1) ... [2018-08-07 12:27:26,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:24" (1/1) ... [2018-08-07 12:27:26,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 12:27:26,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 12:27:26,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 12:27:26,384 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 12:27:26,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:24" (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 [2018-08-07 12:27:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 12:27:26,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 12:27:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 12:27:26,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 12:27:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-08-07 12:27:26,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-08-07 12:27:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 12:27:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 12:27:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-08-07 12:27:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-08-07 12:27:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 12:27:26,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 12:27:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-08-07 12:27:26,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-08-07 12:27:38,568 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 12:27:38,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:27:38 BoogieIcfgContainer [2018-08-07 12:27:38,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 12:27:38,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 12:27:38,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 12:27:38,573 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 12:27:38,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 12:27:21" (1/3) ... [2018-08-07 12:27:38,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89da929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:27:38, skipping insertion in model container [2018-08-07 12:27:38,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:27:24" (2/3) ... [2018-08-07 12:27:38,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89da929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:27:38, skipping insertion in model container [2018-08-07 12:27:38,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:27:38" (3/3) ... [2018-08-07 12:27:38,577 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label00_true-unreach-call.c [2018-08-07 12:27:38,589 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 12:27:38,599 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 12:27:38,665 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 12:27:38,666 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 12:27:38,666 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 12:27:38,666 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 12:27:38,667 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 12:27:38,667 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 12:27:38,667 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 12:27:38,667 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 12:27:38,667 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 12:27:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-08-07 12:27:38,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-08-07 12:27:38,718 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:27:38,719 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:27:38,720 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:27:38,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1069182300, now seen corresponding path program 1 times [2018-08-07 12:27:38,728 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:27:38,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:27:38,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:27:38,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:27:38,784 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:27:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:27:39,198 WARN L170 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:27:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:27:39,312 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:27:39,312 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 12:27:39,312 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:27:39,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 12:27:39,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 12:27:39,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 12:27:39,337 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-08-07 12:27:48,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:27:48,103 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-08-07 12:27:48,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 12:27:48,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-08-07 12:27:48,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:27:48,142 INFO L225 Difference]: With dead ends: 3097 [2018-08-07 12:27:48,142 INFO L226 Difference]: Without dead ends: 1975 [2018-08-07 12:27:48,154 INFO L603 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 [2018-08-07 12:27:48,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-08-07 12:27:48,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-08-07 12:27:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-08-07 12:27:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-08-07 12:27:48,342 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 44 [2018-08-07 12:27:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:27:48,343 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-08-07 12:27:48,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 12:27:48,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-08-07 12:27:48,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-08-07 12:27:48,350 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:27:48,350 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:27:48,351 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:27:48,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1691534068, now seen corresponding path program 1 times [2018-08-07 12:27:48,351 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:27:48,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:27:48,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:27:48,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:27:48,353 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:27:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:27:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:27:48,672 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:27:48,672 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-08-07 12:27:48,672 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:27:48,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:27:48,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:27:48,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-08-07 12:27:48,676 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-08-07 12:28:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:28:09,786 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-08-07 12:28:09,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 12:28:09,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-08-07 12:28:09,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:28:09,813 INFO L225 Difference]: With dead ends: 5736 [2018-08-07 12:28:09,813 INFO L226 Difference]: Without dead ends: 3768 [2018-08-07 12:28:09,820 INFO L603 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 [2018-08-07 12:28:09,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-08-07 12:28:09,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-08-07 12:28:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-08-07 12:28:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-08-07 12:28:09,946 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 120 [2018-08-07 12:28:09,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:28:09,947 INFO L480 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-08-07 12:28:09,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:28:09,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-08-07 12:28:09,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-08-07 12:28:09,960 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:28:09,960 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:28:09,961 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:28:09,961 INFO L82 PathProgramCache]: Analyzing trace with hash 642233136, now seen corresponding path program 1 times [2018-08-07 12:28:09,961 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:28:09,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:28:09,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:28:09,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:28:09,964 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:28:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:28:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:28:10,197 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:28:10,197 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-08-07 12:28:10,197 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:28:10,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:28:10,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:28:10,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-08-07 12:28:10,198 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-08-07 12:28:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:28:27,045 INFO L93 Difference]: Finished difference Result 12385 states and 19155 transitions. [2018-08-07 12:28:27,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 12:28:27,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-08-07 12:28:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:28:27,096 INFO L225 Difference]: With dead ends: 12385 [2018-08-07 12:28:27,097 INFO L226 Difference]: Without dead ends: 8705 [2018-08-07 12:28:27,115 INFO L603 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 [2018-08-07 12:28:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8705 states. [2018-08-07 12:28:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8705 to 8670. [2018-08-07 12:28:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8670 states. [2018-08-07 12:28:27,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8670 states to 8670 states and 12398 transitions. [2018-08-07 12:28:27,335 INFO L78 Accepts]: Start accepts. Automaton has 8670 states and 12398 transitions. Word has length 134 [2018-08-07 12:28:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:28:27,335 INFO L480 AbstractCegarLoop]: Abstraction has 8670 states and 12398 transitions. [2018-08-07 12:28:27,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:28:27,336 INFO L276 IsEmpty]: Start isEmpty. Operand 8670 states and 12398 transitions. [2018-08-07 12:28:27,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-08-07 12:28:27,339 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:28:27,339 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:28:27,339 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:28:27,340 INFO L82 PathProgramCache]: Analyzing trace with hash 96380732, now seen corresponding path program 1 times [2018-08-07 12:28:27,340 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:28:27,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:28:27,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:28:27,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:28:27,341 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:28:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:28:27,880 WARN L170 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-08-07 12:28:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:28:27,978 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:28:27,978 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:28:27,978 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:28:27,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:28:27,979 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:28:27,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:28:27,980 INFO L87 Difference]: Start difference. First operand 8670 states and 12398 transitions. Second operand 6 states. [2018-08-07 12:29:03,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:29:03,681 INFO L93 Difference]: Finished difference Result 26605 states and 38550 transitions. [2018-08-07 12:29:03,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-08-07 12:29:03,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-08-07 12:29:03,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:29:03,750 INFO L225 Difference]: With dead ends: 26605 [2018-08-07 12:29:03,750 INFO L226 Difference]: Without dead ends: 17941 [2018-08-07 12:29:03,777 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-08-07 12:29:03,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17941 states. [2018-08-07 12:29:04,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17941 to 17690. [2018-08-07 12:29:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17690 states. [2018-08-07 12:29:04,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17690 states to 17690 states and 25111 transitions. [2018-08-07 12:29:04,226 INFO L78 Accepts]: Start accepts. Automaton has 17690 states and 25111 transitions. Word has length 160 [2018-08-07 12:29:04,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:29:04,227 INFO L480 AbstractCegarLoop]: Abstraction has 17690 states and 25111 transitions. [2018-08-07 12:29:04,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:29:04,227 INFO L276 IsEmpty]: Start isEmpty. Operand 17690 states and 25111 transitions. [2018-08-07 12:29:04,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-08-07 12:29:04,232 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:29:04,232 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:29:04,233 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:29:04,233 INFO L82 PathProgramCache]: Analyzing trace with hash -843772423, now seen corresponding path program 1 times [2018-08-07 12:29:04,233 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:29:04,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:29:04,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:29:04,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:29:04,235 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:29:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:29:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:29:04,929 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:29:04,929 INFO L194 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 [2018-08-07 12:29:04,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:29:04,947 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:29:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:29:05,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:29:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:29:05,270 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:29:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:29:05,738 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:29:05,738 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-08-07 12:29:05,738 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:29:05,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:29:05,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:29:05,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:29:05,740 INFO L87 Difference]: Start difference. First operand 17690 states and 25111 transitions. Second operand 6 states. [2018-08-07 12:29:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:29:28,679 INFO L93 Difference]: Finished difference Result 57955 states and 88433 transitions. [2018-08-07 12:29:28,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 12:29:28,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-08-07 12:29:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:29:28,902 INFO L225 Difference]: With dead ends: 57955 [2018-08-07 12:29:28,903 INFO L226 Difference]: Without dead ends: 41076 [2018-08-07 12:29:29,003 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-08-07 12:29:29,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41076 states. [2018-08-07 12:29:30,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41076 to 40875. [2018-08-07 12:29:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40875 states. [2018-08-07 12:29:30,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40875 states to 40875 states and 59709 transitions. [2018-08-07 12:29:30,414 INFO L78 Accepts]: Start accepts. Automaton has 40875 states and 59709 transitions. Word has length 174 [2018-08-07 12:29:30,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:29:30,415 INFO L480 AbstractCegarLoop]: Abstraction has 40875 states and 59709 transitions. [2018-08-07 12:29:30,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:29:30,415 INFO L276 IsEmpty]: Start isEmpty. Operand 40875 states and 59709 transitions. [2018-08-07 12:29:30,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-08-07 12:29:30,421 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:29:30,421 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 12:29:30,422 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:29:30,422 INFO L82 PathProgramCache]: Analyzing trace with hash 297769784, now seen corresponding path program 1 times [2018-08-07 12:29:30,422 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:29:30,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:29:30,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:29:30,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:29:30,424 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:29:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:29:30,762 WARN L170 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:29:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 74 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:29:31,160 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:29:31,161 INFO L194 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 [2018-08-07 12:29:31,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:29:31,179 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:29:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:29:31,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:29:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-08-07 12:29:31,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:29:32,049 WARN L170 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-08-07 12:29:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 74 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 12:29:32,679 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:29:32,679 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-08-07 12:29:32,679 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:29:32,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:29:32,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:29:32,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-08-07 12:29:32,681 INFO L87 Difference]: Start difference. First operand 40875 states and 59709 transitions. Second operand 5 states. [2018-08-07 12:29:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:29:50,746 INFO L93 Difference]: Finished difference Result 133983 states and 211605 transitions. [2018-08-07 12:29:50,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 12:29:50,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2018-08-07 12:29:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:29:51,156 INFO L225 Difference]: With dead ends: 133983 [2018-08-07 12:29:51,156 INFO L226 Difference]: Without dead ends: 93114 [2018-08-07 12:29:51,300 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 391 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-08-07 12:29:51,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93114 states. [2018-08-07 12:29:53,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93114 to 92760. [2018-08-07 12:29:53,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92760 states. [2018-08-07 12:29:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92760 states to 92760 states and 129740 transitions. [2018-08-07 12:29:53,549 INFO L78 Accepts]: Start accepts. Automaton has 92760 states and 129740 transitions. Word has length 198 [2018-08-07 12:29:53,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:29:53,550 INFO L480 AbstractCegarLoop]: Abstraction has 92760 states and 129740 transitions. [2018-08-07 12:29:53,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:29:53,550 INFO L276 IsEmpty]: Start isEmpty. Operand 92760 states and 129740 transitions. [2018-08-07 12:29:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-08-07 12:29:53,571 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:29:53,572 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 12:29:53,572 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:29:53,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1419513625, now seen corresponding path program 1 times [2018-08-07 12:29:53,573 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:29:53,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:29:53,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:29:53,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:29:53,574 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:29:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:29:53,885 WARN L170 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 12:29:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 75 proven. 26 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-08-07 12:29:54,033 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:29:54,033 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 12:29:54,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:29:54,046 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:29:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:29:54,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:29:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:29:54,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:29:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:29:54,583 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:29:54,584 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 12:29:54,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:29:54,612 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:29:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:29:54,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:29:55,016 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:29:55,017 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:29:55,325 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:29:55,327 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:29:55,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 18 [2018-08-07 12:29:55,328 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:29:55,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 12:29:55,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 12:29:55,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-08-07 12:29:55,329 INFO L87 Difference]: Start difference. First operand 92760 states and 129740 transitions. Second operand 9 states. [2018-08-07 12:30:20,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:30:20,629 INFO L93 Difference]: Finished difference Result 281597 states and 445698 transitions. [2018-08-07 12:30:20,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-08-07 12:30:20,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 265 [2018-08-07 12:30:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:30:21,440 INFO L225 Difference]: With dead ends: 281597 [2018-08-07 12:30:21,441 INFO L226 Difference]: Without dead ends: 189647 [2018-08-07 12:30:21,695 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1099 GetRequests, 1059 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=302, Invalid=1258, Unknown=0, NotChecked=0, Total=1560 [2018-08-07 12:30:21,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189647 states. [2018-08-07 12:30:25,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189647 to 189083. [2018-08-07 12:30:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189083 states. [2018-08-07 12:30:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189083 states to 189083 states and 252620 transitions. [2018-08-07 12:30:26,188 INFO L78 Accepts]: Start accepts. Automaton has 189083 states and 252620 transitions. Word has length 265 [2018-08-07 12:30:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:30:26,189 INFO L480 AbstractCegarLoop]: Abstraction has 189083 states and 252620 transitions. [2018-08-07 12:30:26,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 12:30:26,189 INFO L276 IsEmpty]: Start isEmpty. Operand 189083 states and 252620 transitions. [2018-08-07 12:30:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-08-07 12:30:26,201 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:30:26,201 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-08-07 12:30:26,201 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:30:26,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1294661756, now seen corresponding path program 1 times [2018-08-07 12:30:26,202 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:30:26,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:30:26,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:30:26,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:30:26,203 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:30:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:30:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2018-08-07 12:30:26,475 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:30:26,475 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 12:30:26,475 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:30:26,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 12:30:26,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 12:30:26,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:30:26,476 INFO L87 Difference]: Start difference. First operand 189083 states and 252620 transitions. Second operand 4 states. [2018-08-07 12:30:41,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:30:41,754 INFO L93 Difference]: Finished difference Result 406550 states and 556025 transitions. [2018-08-07 12:30:41,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 12:30:41,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 292 [2018-08-07 12:30:41,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:30:42,412 INFO L225 Difference]: With dead ends: 406550 [2018-08-07 12:30:42,412 INFO L226 Difference]: Without dead ends: 218277 [2018-08-07 12:30:42,803 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:30:42,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218277 states. [2018-08-07 12:30:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218277 to 217429. [2018-08-07 12:30:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217429 states. [2018-08-07 12:30:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217429 states to 217429 states and 281148 transitions. [2018-08-07 12:30:48,620 INFO L78 Accepts]: Start accepts. Automaton has 217429 states and 281148 transitions. Word has length 292 [2018-08-07 12:30:48,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:30:48,621 INFO L480 AbstractCegarLoop]: Abstraction has 217429 states and 281148 transitions. [2018-08-07 12:30:48,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 12:30:48,621 INFO L276 IsEmpty]: Start isEmpty. Operand 217429 states and 281148 transitions. [2018-08-07 12:30:48,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-08-07 12:30:48,697 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:30:48,698 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:30:48,698 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:30:48,698 INFO L82 PathProgramCache]: Analyzing trace with hash -827193971, now seen corresponding path program 1 times [2018-08-07 12:30:48,699 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:30:48,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:30:48,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:30:48,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:30:48,700 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:30:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:30:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 286 proven. 140 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-08-07 12:30:49,134 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:30:49,135 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 12:30:49,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:30:49,147 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:30:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:30:49,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:30:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-08-07 12:30:56,238 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:30:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-08-07 12:30:56,390 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 12:30:56,391 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-08-07 12:30:56,391 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:30:56,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 12:30:56,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 12:30:56,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-08-07 12:30:56,392 INFO L87 Difference]: Start difference. First operand 217429 states and 281148 transitions. Second operand 3 states. [2018-08-07 12:31:07,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:31:07,201 INFO L93 Difference]: Finished difference Result 429765 states and 562181 transitions. [2018-08-07 12:31:07,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 12:31:07,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 414 [2018-08-07 12:31:07,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:31:07,776 INFO L225 Difference]: With dead ends: 429765 [2018-08-07 12:31:07,777 INFO L226 Difference]: Without dead ends: 213146 [2018-08-07 12:31:08,129 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 829 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 Received shutdown request... [2018-08-07 12:31:08,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213146 states. [2018-08-07 12:31:08,279 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 12:31:08,282 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 12:31:08,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 12:31:08 BoogieIcfgContainer [2018-08-07 12:31:08,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 12:31:08,283 INFO L168 Benchmark]: Toolchain (without parser) took 226505.43 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-08-07 12:31:08,284 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-08-07 12:31:08,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2918.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 351.4 MB). Peak memory consumption was 351.4 MB. Max. memory is 7.1 GB. [2018-08-07 12:31:08,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 369.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2018-08-07 12:31:08,286 INFO L168 Benchmark]: Boogie Preprocessor took 1310.06 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 950.0 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-08-07 12:31:08,287 INFO L168 Benchmark]: RCFGBuilder took 12185.29 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 170.9 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 77.6 MB). Peak memory consumption was 736.9 MB. Max. memory is 7.1 GB. [2018-08-07 12:31:08,288 INFO L168 Benchmark]: TraceAbstraction took 209712.96 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.2 GB in the beginning and 2.8 GB in the end (delta: -634.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-08-07 12:31:08,293 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2918.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 351.4 MB). Peak memory consumption was 351.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 369.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1310.06 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 950.0 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12185.29 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 170.9 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 77.6 MB). Peak memory consumption was 736.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209712.96 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.2 GB in the beginning and 2.8 GB in the end (delta: -634.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 123). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 209.6s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 179.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6051 SDtfs, 32519 SDslu, 4819 SDs, 0 SdLazy, 62230 SolverSat, 15196 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 147.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2738 GetRequests, 2638 SyntacticMatches, 12 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217429occurred in iteration=8, 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: 15.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 2336 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 3117 NumberOfCodeBlocks, 3117 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4414 ConstructedInterpolants, 0 QuantifiedInterpolants, 3246083 SizeOfPredicates, 9 NumberOfNonLiveVariables, 2398 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 2770/3152 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_label00_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_12-31-08-312.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label00_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_12-31-08-312.csv Completed graceful shutdown