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_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 12:36:10,651 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 12:36:10,653 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 12:36:10,665 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 12:36:10,665 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 12:36:10,666 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 12:36:10,668 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 12:36:10,669 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 12:36:10,671 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 12:36:10,672 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 12:36:10,673 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 12:36:10,673 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 12:36:10,674 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 12:36:10,675 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 12:36:10,677 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 12:36:10,679 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 12:36:10,680 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 12:36:10,681 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 12:36:10,684 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 12:36:10,685 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 12:36:10,686 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 12:36:10,688 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 12:36:10,690 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 12:36:10,690 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 12:36:10,691 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 12:36:10,692 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 12:36:10,693 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 12:36:10,694 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 12:36:10,694 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 12:36:10,696 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 12:36:10,696 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 12:36:10,697 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 12:36:10,697 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 12:36:10,697 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 12:36:10,698 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 12:36:10,699 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 12:36:10,699 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 12:36:10,722 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 12:36:10,723 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 12:36:10,725 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 12:36:10,725 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 12:36:10,725 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 12:36:10,725 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 12:36:10,725 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 12:36:10,726 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 12:36:10,726 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 12:36:10,726 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 12:36:10,726 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 12:36:10,727 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 12:36:10,727 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 12:36:10,728 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 12:36:10,728 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 12:36:10,728 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 12:36:10,728 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 12:36:10,729 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 12:36:10,730 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 12:36:10,730 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 12:36:10,730 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 12:36:10,730 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 12:36:10,731 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 12:36:10,731 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 12:36:10,731 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 12:36:10,731 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 12:36:10,732 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 12:36:10,732 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 12:36:10,732 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 12:36:10,732 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 12:36:10,733 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 12:36:10,733 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 12:36:10,733 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 12:36:10,802 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 12:36:10,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 12:36:10,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 12:36:10,828 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 12:36:10,829 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 12:36:10,830 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label59_true-unreach-call.c [2018-08-07 12:36:11,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c00688d7/bb3a7e85d86547938444c4d9eb864dda/FLAG67b8137f0 [2018-08-07 12:36:11,687 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 12:36:11,688 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label59_true-unreach-call.c [2018-08-07 12:36:11,729 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c00688d7/bb3a7e85d86547938444c4d9eb864dda/FLAG67b8137f0 [2018-08-07 12:36:11,751 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c00688d7/bb3a7e85d86547938444c4d9eb864dda [2018-08-07 12:36:11,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 12:36:11,767 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 12:36:11,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 12:36:11,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 12:36:11,780 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 12:36:11,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:36:11" (1/1) ... [2018-08-07 12:36:11,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@be50527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:11, skipping insertion in model container [2018-08-07 12:36:11,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 12:36:11" (1/1) ... [2018-08-07 12:36:12,189 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 12:36:13,372 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:36:13,389 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 12:36:14,662 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 12:36:15,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:15 WrapperNode [2018-08-07 12:36:15,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 12:36:15,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 12:36:15,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 12:36:15,141 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 12:36:15,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:15" (1/1) ... [2018-08-07 12:36:15,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:15" (1/1) ... [2018-08-07 12:36:15,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 12:36:15,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 12:36:15,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 12:36:15,407 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 12:36:16,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:15" (1/1) ... [2018-08-07 12:36:16,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:15" (1/1) ... [2018-08-07 12:36:16,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:15" (1/1) ... [2018-08-07 12:36:16,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:15" (1/1) ... [2018-08-07 12:36:16,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:15" (1/1) ... [2018-08-07 12:36:16,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:15" (1/1) ... [2018-08-07 12:36:16,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:15" (1/1) ... [2018-08-07 12:36:16,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 12:36:16,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 12:36:16,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 12:36:16,600 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 12:36:16,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:15" (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 12:36:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 12:36:16,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 12:36:16,662 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 12:36:16,662 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 12:36:16,662 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 12:36:16,662 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 12:36:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 12:36:16,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 12:36:16,663 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 12:36:16,663 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 12:36:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 12:36:16,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 12:36:16,663 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 12:36:16,664 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 12:36:27,666 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 12:36:27,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:36:27 BoogieIcfgContainer [2018-08-07 12:36:27,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 12:36:27,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 12:36:27,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 12:36:27,671 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 12:36:27,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 12:36:11" (1/3) ... [2018-08-07 12:36:27,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8a4833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:36:27, skipping insertion in model container [2018-08-07 12:36:27,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 12:36:15" (2/3) ... [2018-08-07 12:36:27,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8a4833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 12:36:27, skipping insertion in model container [2018-08-07 12:36:27,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 12:36:27" (3/3) ... [2018-08-07 12:36:27,675 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label59_true-unreach-call.c [2018-08-07 12:36:27,683 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 12:36:27,692 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 12:36:27,752 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 12:36:27,753 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 12:36:27,753 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 12:36:27,753 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 12:36:27,753 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 12:36:27,753 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 12:36:27,753 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 12:36:27,754 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 12:36:27,754 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 12:36:27,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-08-07 12:36:27,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-08-07 12:36:27,814 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:36:27,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:36:27,816 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 12:36:27,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1497363319, now seen corresponding path program 1 times [2018-08-07 12:36:27,823 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:36:27,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:36:27,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:36:27,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:36:27,867 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:36:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:36:28,335 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 12:36:28,338 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:36:28,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 12:36:28,338 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:36:28,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 12:36:28,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 12:36:28,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:36:28,366 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-08-07 12:36:44,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:36:44,867 INFO L93 Difference]: Finished difference Result 4065 states and 7606 transitions. [2018-08-07 12:36:44,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 12:36:44,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-08-07 12:36:44,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:36:44,924 INFO L225 Difference]: With dead ends: 4065 [2018-08-07 12:36:44,924 INFO L226 Difference]: Without dead ends: 2939 [2018-08-07 12:36:44,937 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 12:36:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2018-08-07 12:36:45,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1972. [2018-08-07 12:36:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2018-08-07 12:36:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3594 transitions. [2018-08-07 12:36:45,145 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3594 transitions. Word has length 53 [2018-08-07 12:36:45,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:36:45,145 INFO L480 AbstractCegarLoop]: Abstraction has 1972 states and 3594 transitions. [2018-08-07 12:36:45,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 12:36:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3594 transitions. [2018-08-07 12:36:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-08-07 12:36:45,153 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:36:45,154 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:36:45,154 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 12:36:45,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1308144405, now seen corresponding path program 1 times [2018-08-07 12:36:45,155 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:36:45,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:36:45,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:36:45,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:36:45,156 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:36:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:36:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:36:45,523 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:36:45,523 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:36:45,523 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:36:45,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:36:45,526 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:36:45,526 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:36:45,526 INFO L87 Difference]: Start difference. First operand 1972 states and 3594 transitions. Second operand 6 states. [2018-08-07 12:37:02,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:37:02,273 INFO L93 Difference]: Finished difference Result 5660 states and 10515 transitions. [2018-08-07 12:37:02,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:37:02,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-08-07 12:37:02,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:37:02,306 INFO L225 Difference]: With dead ends: 5660 [2018-08-07 12:37:02,307 INFO L226 Difference]: Without dead ends: 3694 [2018-08-07 12:37:02,315 INFO L603 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 [2018-08-07 12:37:02,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2018-08-07 12:37:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3663. [2018-08-07 12:37:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3663 states. [2018-08-07 12:37:02,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 6064 transitions. [2018-08-07 12:37:02,442 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 6064 transitions. Word has length 126 [2018-08-07 12:37:02,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:37:02,443 INFO L480 AbstractCegarLoop]: Abstraction has 3663 states and 6064 transitions. [2018-08-07 12:37:02,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:37:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 6064 transitions. [2018-08-07 12:37:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-08-07 12:37:02,455 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:37:02,456 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:37:02,456 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 12:37:02,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1982650380, now seen corresponding path program 1 times [2018-08-07 12:37:02,457 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:37:02,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:37:02,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:37:02,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:37:02,462 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:37:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:37:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:37:02,707 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:37:02,707 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:37:02,707 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:37:02,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:37:02,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:37:02,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:37:02,709 INFO L87 Difference]: Start difference. First operand 3663 states and 6064 transitions. Second operand 6 states. [2018-08-07 12:37:16,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:37:16,045 INFO L93 Difference]: Finished difference Result 12410 states and 20905 transitions. [2018-08-07 12:37:16,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:37:16,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-08-07 12:37:16,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:37:16,096 INFO L225 Difference]: With dead ends: 12410 [2018-08-07 12:37:16,096 INFO L226 Difference]: Without dead ends: 8753 [2018-08-07 12:37:16,121 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 12:37:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2018-08-07 12:37:16,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 8702. [2018-08-07 12:37:16,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2018-08-07 12:37:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 13042 transitions. [2018-08-07 12:37:16,496 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 13042 transitions. Word has length 139 [2018-08-07 12:37:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:37:16,497 INFO L480 AbstractCegarLoop]: Abstraction has 8702 states and 13042 transitions. [2018-08-07 12:37:16,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:37:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 13042 transitions. [2018-08-07 12:37:16,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-08-07 12:37:16,500 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:37:16,501 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, 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 12:37:16,501 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 12:37:16,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1239426260, now seen corresponding path program 1 times [2018-08-07 12:37:16,501 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:37:16,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:37:16,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:37:16,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:37:16,503 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:37:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:37:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:37:16,789 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:37:16,789 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-08-07 12:37:16,789 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:37:16,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:37:16,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:37:16,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-08-07 12:37:16,791 INFO L87 Difference]: Start difference. First operand 8702 states and 13042 transitions. Second operand 5 states. [2018-08-07 12:37:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:37:34,392 INFO L93 Difference]: Finished difference Result 26434 states and 42234 transitions. [2018-08-07 12:37:34,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 12:37:34,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2018-08-07 12:37:34,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:37:34,489 INFO L225 Difference]: With dead ends: 26434 [2018-08-07 12:37:34,489 INFO L226 Difference]: Without dead ends: 17738 [2018-08-07 12:37:34,524 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-08-07 12:37:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17738 states. [2018-08-07 12:37:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17738 to 17456. [2018-08-07 12:37:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17456 states. [2018-08-07 12:37:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17456 states to 17456 states and 25481 transitions. [2018-08-07 12:37:35,159 INFO L78 Accepts]: Start accepts. Automaton has 17456 states and 25481 transitions. Word has length 152 [2018-08-07 12:37:35,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:37:35,159 INFO L480 AbstractCegarLoop]: Abstraction has 17456 states and 25481 transitions. [2018-08-07 12:37:35,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:37:35,160 INFO L276 IsEmpty]: Start isEmpty. Operand 17456 states and 25481 transitions. [2018-08-07 12:37:35,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-08-07 12:37:35,164 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:37:35,164 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, 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] [2018-08-07 12:37:35,167 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 12:37:35,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1602043564, now seen corresponding path program 1 times [2018-08-07 12:37:35,168 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:37:35,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:37:35,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:37:35,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:37:35,170 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:37:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:37:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:37:35,518 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:37:35,519 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-08-07 12:37:35,519 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:37:35,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:37:35,520 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:37:35,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-08-07 12:37:35,520 INFO L87 Difference]: Start difference. First operand 17456 states and 25481 transitions. Second operand 5 states. [2018-08-07 12:38:04,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:38:04,049 INFO L93 Difference]: Finished difference Result 53248 states and 82477 transitions. [2018-08-07 12:38:04,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 12:38:04,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2018-08-07 12:38:04,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:38:04,181 INFO L225 Difference]: With dead ends: 53248 [2018-08-07 12:38:04,181 INFO L226 Difference]: Without dead ends: 35798 [2018-08-07 12:38:04,240 INFO L603 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 [2018-08-07 12:38:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35798 states. [2018-08-07 12:38:04,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35798 to 35514. [2018-08-07 12:38:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35514 states. [2018-08-07 12:38:05,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35514 states to 35514 states and 52185 transitions. [2018-08-07 12:38:05,051 INFO L78 Accepts]: Start accepts. Automaton has 35514 states and 52185 transitions. Word has length 159 [2018-08-07 12:38:05,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:38:05,051 INFO L480 AbstractCegarLoop]: Abstraction has 35514 states and 52185 transitions. [2018-08-07 12:38:05,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:38:05,052 INFO L276 IsEmpty]: Start isEmpty. Operand 35514 states and 52185 transitions. [2018-08-07 12:38:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-08-07 12:38:05,055 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:38:05,056 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, 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] [2018-08-07 12:38:05,056 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 12:38:05,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1844216296, now seen corresponding path program 1 times [2018-08-07 12:38:05,057 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:38:05,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:38:05,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:38:05,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:38:05,058 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:38:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:38:05,257 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:38:05,258 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:38:05,258 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 12:38:05,258 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:38:05,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 12:38:05,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 12:38:05,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 12:38:05,259 INFO L87 Difference]: Start difference. First operand 35514 states and 52185 transitions. Second operand 3 states. [2018-08-07 12:38:14,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:38:14,477 INFO L93 Difference]: Finished difference Result 71024 states and 104660 transitions. [2018-08-07 12:38:14,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 12:38:14,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2018-08-07 12:38:14,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:38:14,610 INFO L225 Difference]: With dead ends: 71024 [2018-08-07 12:38:14,610 INFO L226 Difference]: Without dead ends: 35516 [2018-08-07 12:38:14,704 INFO L603 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 [2018-08-07 12:38:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35516 states. [2018-08-07 12:38:15,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35516 to 35514. [2018-08-07 12:38:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35514 states. [2018-08-07 12:38:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35514 states to 35514 states and 47243 transitions. [2018-08-07 12:38:15,357 INFO L78 Accepts]: Start accepts. Automaton has 35514 states and 47243 transitions. Word has length 169 [2018-08-07 12:38:15,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:38:15,357 INFO L480 AbstractCegarLoop]: Abstraction has 35514 states and 47243 transitions. [2018-08-07 12:38:15,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 12:38:15,360 INFO L276 IsEmpty]: Start isEmpty. Operand 35514 states and 47243 transitions. [2018-08-07 12:38:15,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-08-07 12:38:15,364 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:38:15,364 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, 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] [2018-08-07 12:38:15,365 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 12:38:15,365 INFO L82 PathProgramCache]: Analyzing trace with hash 577986766, now seen corresponding path program 1 times [2018-08-07 12:38:15,365 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:38:15,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:38:15,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:38:15,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:38:15,367 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:38:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:38:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:38:15,557 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:38:15,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 12:38:15,557 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:38:15,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 12:38:15,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 12:38:15,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:38:15,558 INFO L87 Difference]: Start difference. First operand 35514 states and 47243 transitions. Second operand 4 states. [2018-08-07 12:38:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:38:25,569 INFO L93 Difference]: Finished difference Result 79127 states and 105712 transitions. [2018-08-07 12:38:25,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 12:38:25,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-08-07 12:38:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:38:25,680 INFO L225 Difference]: With dead ends: 79127 [2018-08-07 12:38:25,680 INFO L226 Difference]: Without dead ends: 43619 [2018-08-07 12:38:25,753 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 12:38:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43619 states. [2018-08-07 12:38:26,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43619 to 41205. [2018-08-07 12:38:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41205 states. [2018-08-07 12:38:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41205 states to 41205 states and 50198 transitions. [2018-08-07 12:38:26,387 INFO L78 Accepts]: Start accepts. Automaton has 41205 states and 50198 transitions. Word has length 174 [2018-08-07 12:38:26,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:38:26,388 INFO L480 AbstractCegarLoop]: Abstraction has 41205 states and 50198 transitions. [2018-08-07 12:38:26,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 12:38:26,388 INFO L276 IsEmpty]: Start isEmpty. Operand 41205 states and 50198 transitions. [2018-08-07 12:38:26,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-08-07 12:38:26,398 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:38:26,398 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:38:26,399 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 12:38:26,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1126293598, now seen corresponding path program 1 times [2018-08-07 12:38:26,399 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:38:26,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:38:26,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:38:26,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:38:26,400 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:38:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:38:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 12:38:26,793 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 12:38:26,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 12:38:26,793 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:38:26,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 12:38:26,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 12:38:26,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 12:38:26,794 INFO L87 Difference]: Start difference. First operand 41205 states and 50198 transitions. Second operand 6 states. [2018-08-07 12:38:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:38:37,034 INFO L93 Difference]: Finished difference Result 83273 states and 102746 transitions. [2018-08-07 12:38:37,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:38:37,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 257 [2018-08-07 12:38:37,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:38:37,144 INFO L225 Difference]: With dead ends: 83273 [2018-08-07 12:38:37,144 INFO L226 Difference]: Without dead ends: 42074 [2018-08-07 12:38:37,205 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-08-07 12:38:37,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42074 states. [2018-08-07 12:38:37,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42074 to 40375. [2018-08-07 12:38:37,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40375 states. [2018-08-07 12:38:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40375 states to 40375 states and 47472 transitions. [2018-08-07 12:38:37,826 INFO L78 Accepts]: Start accepts. Automaton has 40375 states and 47472 transitions. Word has length 257 [2018-08-07 12:38:37,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:38:37,827 INFO L480 AbstractCegarLoop]: Abstraction has 40375 states and 47472 transitions. [2018-08-07 12:38:37,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 12:38:37,827 INFO L276 IsEmpty]: Start isEmpty. Operand 40375 states and 47472 transitions. [2018-08-07 12:38:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-08-07 12:38:37,846 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:38:37,846 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, 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, 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] [2018-08-07 12:38:37,847 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 12:38:37,847 INFO L82 PathProgramCache]: Analyzing trace with hash -2094511640, now seen corresponding path program 1 times [2018-08-07 12:38:37,847 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:38:37,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:38:37,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:38:37,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:38:37,848 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:38:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:38:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 138 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-08-07 12:38:38,138 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:38:38,138 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 12:38:38,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:38:38,148 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:38:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:38:38,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:38:38,692 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-08-07 12:38:38,693 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:38:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 138 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-08-07 12:38:39,525 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:38:39,526 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-08-07 12:38:39,526 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:38:39,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:38:39,527 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:38:39,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-08-07 12:38:39,528 INFO L87 Difference]: Start difference. First operand 40375 states and 47472 transitions. Second operand 5 states. [2018-08-07 12:38:55,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:38:55,638 INFO L93 Difference]: Finished difference Result 121797 states and 146510 transitions. [2018-08-07 12:38:55,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-07 12:38:55,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2018-08-07 12:38:55,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:38:56,002 INFO L225 Difference]: With dead ends: 121797 [2018-08-07 12:38:56,002 INFO L226 Difference]: Without dead ends: 81428 [2018-08-07 12:38:56,175 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 641 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-08-07 12:38:56,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81428 states. [2018-08-07 12:38:58,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81428 to 81057. [2018-08-07 12:38:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81057 states. [2018-08-07 12:38:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81057 states to 81057 states and 92518 transitions. [2018-08-07 12:38:59,056 INFO L78 Accepts]: Start accepts. Automaton has 81057 states and 92518 transitions. Word has length 323 [2018-08-07 12:38:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:38:59,057 INFO L480 AbstractCegarLoop]: Abstraction has 81057 states and 92518 transitions. [2018-08-07 12:38:59,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:38:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 81057 states and 92518 transitions. [2018-08-07 12:38:59,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-08-07 12:38:59,091 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:38:59,091 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-07 12:38:59,092 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:38:59,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1600824864, now seen corresponding path program 1 times [2018-08-07 12:38:59,092 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:38:59,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:38:59,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:38:59,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:38:59,094 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:38:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:38:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 220 proven. 78 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-08-07 12:38:59,765 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:38:59,765 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 12:38:59,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:38:59,785 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:38:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:38:59,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:39:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-08-07 12:39:00,440 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:39:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 220 proven. 78 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-08-07 12:39:01,156 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:39:01,156 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 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 [2018-08-07 12:39:01,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:39:01,183 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:39:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:39:01,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:39:01,605 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-08-07 12:39:01,605 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:39:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 220 proven. 78 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (4)] Exception during sending of exit command (exit): Broken pipe [2018-08-07 12:39:02,009 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:39:02,009 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-08-07 12:39:02,009 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:39:02,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-08-07 12:39:02,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-08-07 12:39:02,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-08-07 12:39:02,013 INFO L87 Difference]: Start difference. First operand 81057 states and 92518 transitions. Second operand 9 states. [2018-08-07 12:39:25,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:39:25,846 INFO L93 Difference]: Finished difference Result 216563 states and 271485 transitions. [2018-08-07 12:39:25,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-08-07 12:39:25,846 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 373 [2018-08-07 12:39:25,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:39:26,307 INFO L225 Difference]: With dead ends: 216563 [2018-08-07 12:39:26,307 INFO L226 Difference]: Without dead ends: 129880 [2018-08-07 12:39:26,546 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 1514 GetRequests, 1491 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-08-07 12:39:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129880 states. [2018-08-07 12:39:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129880 to 128760. [2018-08-07 12:39:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128760 states. [2018-08-07 12:39:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128760 states to 128760 states and 153099 transitions. [2018-08-07 12:39:28,862 INFO L78 Accepts]: Start accepts. Automaton has 128760 states and 153099 transitions. Word has length 373 [2018-08-07 12:39:28,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:39:28,863 INFO L480 AbstractCegarLoop]: Abstraction has 128760 states and 153099 transitions. [2018-08-07 12:39:28,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-08-07 12:39:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 128760 states and 153099 transitions. [2018-08-07 12:39:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-08-07 12:39:28,937 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:39:28,938 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, 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, 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] [2018-08-07 12:39:28,938 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:39:28,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1650844598, now seen corresponding path program 1 times [2018-08-07 12:39:28,938 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:39:28,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:39:28,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:39:28,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:39:28,940 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:39:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:39:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-08-07 12:39:31,064 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:39:31,064 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 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 [2018-08-07 12:39:31,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:39:31,071 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:39:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:39:31,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:39:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-08-07 12:39:31,514 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:39:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 138 proven. 178 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-08-07 12:39:32,323 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 12:39:32,323 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-08-07 12:39:32,323 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 12:39:32,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 12:39:32,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 12:39:32,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-08-07 12:39:32,324 INFO L87 Difference]: Start difference. First operand 128760 states and 153099 transitions. Second operand 5 states. [2018-08-07 12:39:49,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 12:39:49,518 INFO L93 Difference]: Finished difference Result 262520 states and 315159 transitions. [2018-08-07 12:39:49,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 12:39:49,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 403 [2018-08-07 12:39:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 12:39:49,903 INFO L225 Difference]: With dead ends: 262520 [2018-08-07 12:39:49,904 INFO L226 Difference]: Without dead ends: 133766 [2018-08-07 12:39:50,122 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 801 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-08-07 12:39:50,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133766 states. [2018-08-07 12:39:51,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133766 to 131487. [2018-08-07 12:39:51,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131487 states. [2018-08-07 12:39:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131487 states to 131487 states and 156655 transitions. [2018-08-07 12:39:51,998 INFO L78 Accepts]: Start accepts. Automaton has 131487 states and 156655 transitions. Word has length 403 [2018-08-07 12:39:51,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 12:39:51,998 INFO L480 AbstractCegarLoop]: Abstraction has 131487 states and 156655 transitions. [2018-08-07 12:39:51,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 12:39:51,998 INFO L276 IsEmpty]: Start isEmpty. Operand 131487 states and 156655 transitions. [2018-08-07 12:39:52,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-08-07 12:39:52,042 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 12:39:52,043 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 12:39:52,043 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 12:39:52,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1103104699, now seen corresponding path program 1 times [2018-08-07 12:39:52,043 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 12:39:52,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:39:52,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:39:52,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 12:39:52,044 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 12:39:53,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:39:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 501 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-08-07 12:39:53,911 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:39:53,911 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 12:39:53,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:39:53,920 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:39:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:39:54,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:39:54,755 WARN L170 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-08-07 12:39:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 572 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-08-07 12:39:54,935 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:39:55,478 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-08-07 12:39:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 195 proven. 463 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-08-07 12:39:56,362 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 12:39:56,362 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-08-07 12:39:56,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 12:39:56,381 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 12:39:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 12:39:56,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 12:39:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 501 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-08-07 12:39:57,988 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 12:39:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 501 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-08-07 12:39:58,370 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-08-07 12:39:58,371 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8, 6, 5] total 21 [2018-08-07 12:39:58,371 INFO L255 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-08-07 12:39:58,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-08-07 12:39:58,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-08-07 12:39:58,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2018-08-07 12:39:58,374 INFO L87 Difference]: Start difference. First operand 131487 states and 156655 transitions. Second operand 13 states. Received shutdown request... [2018-08-07 12:40:01,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-08-07 12:40:01,398 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 12:40:01,402 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 12:40:01,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 12:40:01 BoogieIcfgContainer [2018-08-07 12:40:01,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 12:40:01,404 INFO L168 Benchmark]: Toolchain (without parser) took 229637.75 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 1.4 GB in the end (delta: 12.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-08-07 12:40:01,405 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-08-07 12:40:01,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3371.54 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. [2018-08-07 12:40:01,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 266.10 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-08-07 12:40:01,407 INFO L168 Benchmark]: Boogie Preprocessor took 1192.61 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 995.6 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 12:40:01,408 INFO L168 Benchmark]: RCFGBuilder took 11066.90 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 161.0 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 84.7 MB). Peak memory consumption was 738.2 MB. Max. memory is 7.1 GB. [2018-08-07 12:40:01,409 INFO L168 Benchmark]: TraceAbstraction took 213735.03 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 831.5 MB). Free memory was 2.3 GB in the beginning and 1.4 GB in the end (delta: 855.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-08-07 12:40:01,414 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 3371.54 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 266.10 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1192.61 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 995.6 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 11066.90 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 161.0 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 84.7 MB). Peak memory consumption was 738.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213735.03 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 831.5 MB). Free memory was 2.3 GB in the beginning and 1.4 GB in the end (delta: 855.9 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: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while BasicCegarLoop was constructing difference of abstraction (131487states) and FLOYD_HOARE automaton (currently 11 states, 13 states before enhancement), while ReachableStatesComputation was computing reachable states (872 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 213.6s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 185.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6703 SDtfs, 40401 SDslu, 5857 SDs, 0 SdLazy, 71332 SolverSat, 14664 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 155.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5079 GetRequests, 4955 SyntacticMatches, 15 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131487occurred 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: 11.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 9500 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 5312 NumberOfCodeBlocks, 5312 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 7768 ConstructedInterpolants, 111 QuantifiedInterpolants, 9464539 SizeOfPredicates, 6 NumberOfNonLiveVariables, 4153 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 7565/8734 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_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_12-40-01-430.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label59_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_12-40-01-430.csv Completed graceful shutdown