java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:56:39,692 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:56:39,694 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:56:39,715 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:56:39,715 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:56:39,716 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:56:39,718 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:56:39,721 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:56:39,723 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:56:39,725 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:56:39,726 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:56:39,727 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:56:39,729 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:56:39,730 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:56:39,731 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:56:39,732 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:56:39,733 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:56:39,737 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:56:39,739 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:56:39,741 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:56:39,742 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:56:39,744 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:56:39,746 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:56:39,747 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:56:39,747 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:56:39,748 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:56:39,749 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:56:39,750 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:56:39,750 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:56:39,752 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:56:39,752 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:56:39,753 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:56:39,753 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:56:39,753 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:56:39,754 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:56:39,755 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:56:39,755 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:56:39,782 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:56:39,783 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:56:39,784 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:56:39,784 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:56:39,784 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:56:39,785 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:56:39,785 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:56:39,785 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:56:39,785 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:56:39,785 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:56:39,786 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:56:39,787 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:56:39,787 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:56:39,787 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:56:39,788 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:56:39,788 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:56:39,788 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:56:39,788 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:56:39,788 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:56:39,789 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:56:39,789 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:56:39,789 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:56:39,789 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:56:39,791 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:56:39,791 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:56:39,792 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:56:39,792 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:56:39,792 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:56:39,792 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:56:39,792 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:56:39,793 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:56:39,793 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:56:39,793 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:56:39,866 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:56:39,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:56:39,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:56:39,892 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:56:39,892 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:56:39,893 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label02_true-unreach-call.c [2018-07-24 12:56:40,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3adeb6036/21727c91881b416db24e1e3eb355309a/FLAG59225d529 [2018-07-24 12:56:40,748 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:56:40,749 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label02_true-unreach-call.c [2018-07-24 12:56:40,802 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3adeb6036/21727c91881b416db24e1e3eb355309a/FLAG59225d529 [2018-07-24 12:56:40,825 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3adeb6036/21727c91881b416db24e1e3eb355309a [2018-07-24 12:56:40,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:56:40,840 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:56:40,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:56:40,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:56:40,851 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:56:40,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:56:40" (1/1) ... [2018-07-24 12:56:40,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:40, skipping insertion in model container [2018-07-24 12:56:40,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:56:40" (1/1) ... [2018-07-24 12:56:41,280 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:56:42,354 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:56:42,374 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:56:43,231 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:56:43,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:43 WrapperNode [2018-07-24 12:56:43,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:56:43,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:56:43,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:56:43,398 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:56:43,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:43" (1/1) ... [2018-07-24 12:56:43,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:43" (1/1) ... [2018-07-24 12:56:43,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:56:43,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:56:43,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:56:43,559 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:56:43,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:43" (1/1) ... [2018-07-24 12:56:43,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:43" (1/1) ... [2018-07-24 12:56:43,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:43" (1/1) ... [2018-07-24 12:56:43,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:43" (1/1) ... [2018-07-24 12:56:44,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:43" (1/1) ... [2018-07-24 12:56:44,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:43" (1/1) ... [2018-07-24 12:56:44,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:43" (1/1) ... [2018-07-24 12:56:44,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:56:44,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:56:44,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:56:44,200 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:56:44,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:56:44,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:56:44,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:56:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 12:56:44,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 12:56:44,278 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 12:56:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 12:56:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:56:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:56:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 12:56:44,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 12:56:44,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:56:44,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:56:44,280 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 12:56:44,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 12:56:57,076 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:56:57,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:56:57 BoogieIcfgContainer [2018-07-24 12:56:57,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:56:57,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:56:57,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:56:57,081 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:56:57,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:56:40" (1/3) ... [2018-07-24 12:56:57,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e101411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:56:57, skipping insertion in model container [2018-07-24 12:56:57,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:56:43" (2/3) ... [2018-07-24 12:56:57,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e101411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:56:57, skipping insertion in model container [2018-07-24 12:56:57,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:56:57" (3/3) ... [2018-07-24 12:56:57,085 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label02_true-unreach-call.c [2018-07-24 12:56:57,095 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:56:57,103 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:56:57,163 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:56:57,163 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:56:57,164 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:56:57,164 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:56:57,164 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:56:57,164 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:56:57,164 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:56:57,164 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:56:57,164 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:56:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-07-24 12:56:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2018-07-24 12:56:57,263 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:56:57,265 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:56:57,266 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:56:57,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1963827916, now seen corresponding path program 1 times [2018-07-24 12:56:57,275 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:56:57,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:57,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:56:57,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:56:57,326 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:56:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:56:58,881 WARN L169 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:56:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:56:59,813 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:56:59,813 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:56:59,814 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:56:59,823 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:56:59,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:56:59,838 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:56:59,840 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-07-24 12:57:07,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:57:07,114 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-07-24 12:57:07,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:57:07,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 815 [2018-07-24 12:57:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:57:07,158 INFO L225 Difference]: With dead ends: 2647 [2018-07-24 12:57:07,158 INFO L226 Difference]: Without dead ends: 1738 [2018-07-24 12:57:07,170 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:57:07,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-07-24 12:57:07,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-07-24 12:57:07,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-07-24 12:57:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3151 transitions. [2018-07-24 12:57:07,336 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3151 transitions. Word has length 815 [2018-07-24 12:57:07,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:57:07,341 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 3151 transitions. [2018-07-24 12:57:07,341 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:57:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3151 transitions. [2018-07-24 12:57:07,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2018-07-24 12:57:07,379 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:57:07,380 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:57:07,380 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:57:07,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1124106505, now seen corresponding path program 1 times [2018-07-24 12:57:07,381 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:57:07,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:07,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:07,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:07,383 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:57:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:57:08,766 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:57:08,766 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:57:08,766 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:57:08,770 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:57:08,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:57:08,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:57:08,771 INFO L87 Difference]: Start difference. First operand 1738 states and 3151 transitions. Second operand 3 states. [2018-07-24 12:57:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:57:15,875 INFO L93 Difference]: Finished difference Result 5140 states and 9440 transitions. [2018-07-24 12:57:15,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:57:15,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 824 [2018-07-24 12:57:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:57:15,902 INFO L225 Difference]: With dead ends: 5140 [2018-07-24 12:57:15,903 INFO L226 Difference]: Without dead ends: 3408 [2018-07-24 12:57:15,910 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:57:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2018-07-24 12:57:15,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3408. [2018-07-24 12:57:15,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2018-07-24 12:57:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 5841 transitions. [2018-07-24 12:57:15,998 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 5841 transitions. Word has length 824 [2018-07-24 12:57:15,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:57:15,999 INFO L471 AbstractCegarLoop]: Abstraction has 3408 states and 5841 transitions. [2018-07-24 12:57:15,999 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:57:16,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 5841 transitions. [2018-07-24 12:57:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2018-07-24 12:57:16,016 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:57:16,017 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:57:16,017 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:57:16,018 INFO L82 PathProgramCache]: Analyzing trace with hash 993934060, now seen corresponding path program 1 times [2018-07-24 12:57:16,018 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:57:16,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:16,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:16,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:16,020 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:57:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:16,362 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:57:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 67 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:57:17,349 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:57:17,350 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:57:17,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:17,370 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:57:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:17,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:57:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-07-24 12:57:18,468 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:57:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 67 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:57:19,171 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:57:19,173 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2018-07-24 12:57:19,173 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:57:19,176 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:57:19,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:57:19,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:57:19,177 INFO L87 Difference]: Start difference. First operand 3408 states and 5841 transitions. Second operand 5 states. [2018-07-24 12:57:29,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:57:29,246 INFO L93 Difference]: Finished difference Result 10805 states and 18736 transitions. [2018-07-24 12:57:29,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:57:29,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 888 [2018-07-24 12:57:29,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:57:29,297 INFO L225 Difference]: With dead ends: 10805 [2018-07-24 12:57:29,297 INFO L226 Difference]: Without dead ends: 7403 [2018-07-24 12:57:29,309 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1784 GetRequests, 1770 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-07-24 12:57:29,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7403 states. [2018-07-24 12:57:29,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7403 to 7352. [2018-07-24 12:57:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7352 states. [2018-07-24 12:57:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 11168 transitions. [2018-07-24 12:57:29,533 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 11168 transitions. Word has length 888 [2018-07-24 12:57:29,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:57:29,533 INFO L471 AbstractCegarLoop]: Abstraction has 7352 states and 11168 transitions. [2018-07-24 12:57:29,533 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:57:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 11168 transitions. [2018-07-24 12:57:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2018-07-24 12:57:29,566 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:57:29,568 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:57:29,568 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:57:29,569 INFO L82 PathProgramCache]: Analyzing trace with hash -2021093479, now seen corresponding path program 1 times [2018-07-24 12:57:29,569 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:57:29,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:29,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:29,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:29,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:57:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:29,969 WARN L169 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:57:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:57:31,062 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:57:31,063 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:57:31,064 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:57:31,065 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:57:31,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:57:31,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:57:31,066 INFO L87 Difference]: Start difference. First operand 7352 states and 11168 transitions. Second operand 6 states. [2018-07-24 12:57:38,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:57:38,630 INFO L93 Difference]: Finished difference Result 22007 states and 34801 transitions. [2018-07-24 12:57:38,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:57:38,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 896 [2018-07-24 12:57:38,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:57:38,729 INFO L225 Difference]: With dead ends: 22007 [2018-07-24 12:57:38,729 INFO L226 Difference]: Without dead ends: 14661 [2018-07-24 12:57:38,761 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:57:38,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14661 states. [2018-07-24 12:57:39,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14661 to 14553. [2018-07-24 12:57:39,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14553 states. [2018-07-24 12:57:39,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14553 states to 14553 states and 21838 transitions. [2018-07-24 12:57:39,140 INFO L78 Accepts]: Start accepts. Automaton has 14553 states and 21838 transitions. Word has length 896 [2018-07-24 12:57:39,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:57:39,140 INFO L471 AbstractCegarLoop]: Abstraction has 14553 states and 21838 transitions. [2018-07-24 12:57:39,141 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:57:39,141 INFO L276 IsEmpty]: Start isEmpty. Operand 14553 states and 21838 transitions. [2018-07-24 12:57:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2018-07-24 12:57:39,200 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:57:39,201 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:57:39,201 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:57:39,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1507607812, now seen corresponding path program 1 times [2018-07-24 12:57:39,202 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:57:39,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:39,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:39,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:57:39,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:57:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:57:40,591 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:57:40,592 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:57:40,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:40,604 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:57:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:40,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:57:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:57:41,433 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:57:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:57:42,085 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:57:42,085 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:57:42,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:57:42,101 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:57:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:57:42,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:57:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:57:43,996 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:57:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:57:44,907 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:57:44,908 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 12:57:44,908 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:57:44,910 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:57:44,910 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:57:44,910 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-07-24 12:57:44,911 INFO L87 Difference]: Start difference. First operand 14553 states and 21838 transitions. Second operand 9 states. [2018-07-24 12:58:02,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:58:02,491 INFO L93 Difference]: Finished difference Result 43813 states and 72071 transitions. [2018-07-24 12:58:02,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-24 12:58:02,491 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 905 [2018-07-24 12:58:02,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:58:02,619 INFO L225 Difference]: With dead ends: 43813 [2018-07-24 12:58:02,619 INFO L226 Difference]: Without dead ends: 29266 [2018-07-24 12:58:02,682 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3668 GetRequests, 3626 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=374, Invalid=1432, Unknown=0, NotChecked=0, Total=1806 [2018-07-24 12:58:02,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29266 states. [2018-07-24 12:58:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29266 to 28492. [2018-07-24 12:58:03,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28492 states. [2018-07-24 12:58:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28492 states to 28492 states and 36879 transitions. [2018-07-24 12:58:03,423 INFO L78 Accepts]: Start accepts. Automaton has 28492 states and 36879 transitions. Word has length 905 [2018-07-24 12:58:03,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:58:03,424 INFO L471 AbstractCegarLoop]: Abstraction has 28492 states and 36879 transitions. [2018-07-24 12:58:03,424 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:58:03,424 INFO L276 IsEmpty]: Start isEmpty. Operand 28492 states and 36879 transitions. [2018-07-24 12:58:03,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2018-07-24 12:58:03,507 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:58:03,509 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:58:03,510 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:58:03,510 INFO L82 PathProgramCache]: Analyzing trace with hash -144365656, now seen corresponding path program 1 times [2018-07-24 12:58:03,510 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:58:03,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:58:03,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:58:03,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:58:03,512 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:58:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:58:03,850 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:58:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 126 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:58:04,619 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:58:04,619 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:58:04,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:58:04,627 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:58:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:58:05,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:58:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-07-24 12:58:05,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:58:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 126 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:58:06,252 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:58:06,252 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 12:58:06,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:58:06,254 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:58:06,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:58:06,254 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:58:06,255 INFO L87 Difference]: Start difference. First operand 28492 states and 36879 transitions. Second operand 5 states. [2018-07-24 12:58:13,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:58:13,846 INFO L93 Difference]: Finished difference Result 70663 states and 93386 transitions. [2018-07-24 12:58:13,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:58:13,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 947 [2018-07-24 12:58:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:58:13,953 INFO L225 Difference]: With dead ends: 70663 [2018-07-24 12:58:13,954 INFO L226 Difference]: Without dead ends: 42177 [2018-07-24 12:58:14,001 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1903 GetRequests, 1888 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:58:14,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42177 states. [2018-07-24 12:58:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42177 to 42025. [2018-07-24 12:58:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42025 states. [2018-07-24 12:58:14,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42025 states to 42025 states and 51254 transitions. [2018-07-24 12:58:14,782 INFO L78 Accepts]: Start accepts. Automaton has 42025 states and 51254 transitions. Word has length 947 [2018-07-24 12:58:14,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:58:14,782 INFO L471 AbstractCegarLoop]: Abstraction has 42025 states and 51254 transitions. [2018-07-24 12:58:14,783 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:58:14,783 INFO L276 IsEmpty]: Start isEmpty. Operand 42025 states and 51254 transitions. [2018-07-24 12:58:14,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2018-07-24 12:58:14,835 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:58:14,836 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:58:14,836 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:58:14,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1693421059, now seen corresponding path program 1 times [2018-07-24 12:58:14,837 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:58:14,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:58:14,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:58:14,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:58:14,838 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:58:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:58:15,205 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:58:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 267 proven. 229 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-07-24 12:58:15,650 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:58:15,650 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:58:15,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:58:15,659 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:58:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:58:16,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:58:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 357 proven. 2 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-07-24 12:58:17,207 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:58:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 291 proven. 151 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-07-24 12:58:18,016 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:58:18,016 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 12:58:18,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:58:18,034 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:58:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:58:19,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:58:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-07-24 12:58:19,743 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:58:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 269 proven. 209 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-07-24 12:58:20,479 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 12:58:20,480 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-07-24 12:58:20,480 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:58:20,482 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:58:20,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:58:20,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:58:20,483 INFO L87 Difference]: Start difference. First operand 42025 states and 51254 transitions. Second operand 5 states. [2018-07-24 12:58:27,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:58:27,304 INFO L93 Difference]: Finished difference Result 104693 states and 130994 transitions. [2018-07-24 12:58:27,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 12:58:27,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1081 [2018-07-24 12:58:27,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:58:27,463 INFO L225 Difference]: With dead ends: 104693 [2018-07-24 12:58:27,463 INFO L226 Difference]: Without dead ends: 62674 [2018-07-24 12:58:27,535 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4332 GetRequests, 4311 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:58:27,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62674 states. [2018-07-24 12:58:28,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62674 to 61807. [2018-07-24 12:58:28,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61807 states. [2018-07-24 12:58:28,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61807 states to 61807 states and 75016 transitions. [2018-07-24 12:58:28,581 INFO L78 Accepts]: Start accepts. Automaton has 61807 states and 75016 transitions. Word has length 1081 [2018-07-24 12:58:28,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:58:28,582 INFO L471 AbstractCegarLoop]: Abstraction has 61807 states and 75016 transitions. [2018-07-24 12:58:28,582 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:58:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 61807 states and 75016 transitions. [2018-07-24 12:58:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1301 [2018-07-24 12:58:28,659 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:58:28,660 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:58:28,660 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:58:28,661 INFO L82 PathProgramCache]: Analyzing trace with hash 67126946, now seen corresponding path program 1 times [2018-07-24 12:58:28,661 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:58:28,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:58:28,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:58:28,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:58:28,662 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:58:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:58:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 568 proven. 62 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 12:58:30,207 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:58:30,207 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:58:30,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:58:30,215 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:58:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:58:30,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:58:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 641 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 12:58:31,680 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:58:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 568 proven. 62 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 12:58:32,625 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:58:32,625 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:58:32,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:58:32,641 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:58:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:58:33,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:58:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 641 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 12:58:34,748 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:58:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 568 proven. 62 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-07-24 12:58:35,451 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:58:35,453 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 12:58:35,453 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:58:35,455 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:58:35,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:58:35,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-07-24 12:58:35,455 INFO L87 Difference]: Start difference. First operand 61807 states and 75016 transitions. Second operand 9 states. [2018-07-24 12:58:35,644 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-07-24 12:59:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:59:02,306 INFO L93 Difference]: Finished difference Result 238792 states and 310993 transitions. [2018-07-24 12:59:02,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-24 12:59:02,307 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1300 [2018-07-24 12:59:02,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:59:03,027 INFO L225 Difference]: With dead ends: 238792 [2018-07-24 12:59:03,027 INFO L226 Difference]: Without dead ends: 176991 [2018-07-24 12:59:03,226 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5278 GetRequests, 5226 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=525, Invalid=2127, Unknown=0, NotChecked=0, Total=2652 [2018-07-24 12:59:03,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176991 states. [2018-07-24 12:59:06,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176991 to 171881. [2018-07-24 12:59:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171881 states. [2018-07-24 12:59:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171881 states to 171881 states and 207343 transitions. [2018-07-24 12:59:06,631 INFO L78 Accepts]: Start accepts. Automaton has 171881 states and 207343 transitions. Word has length 1300 [2018-07-24 12:59:06,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:59:06,631 INFO L471 AbstractCegarLoop]: Abstraction has 171881 states and 207343 transitions. [2018-07-24 12:59:06,631 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:59:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 171881 states and 207343 transitions. [2018-07-24 12:59:07,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2125 [2018-07-24 12:59:07,156 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:59:07,158 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:59:07,158 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:59:07,159 INFO L82 PathProgramCache]: Analyzing trace with hash -771286979, now seen corresponding path program 1 times [2018-07-24 12:59:07,159 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:59:07,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:59:07,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:59:07,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:59:07,160 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:59:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:59:11,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 1305 proven. 209 refuted. 0 times theorem prover too weak. 1679 trivial. 0 not checked. [2018-07-24 12:59:11,076 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:59:11,076 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:59:11,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:59:11,086 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:59:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:59:11,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:59:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 2896 trivial. 0 not checked. [2018-07-24 12:59:14,078 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:59:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 1322 proven. 127 refuted. 0 times theorem prover too weak. 1744 trivial. 0 not checked. [2018-07-24 12:59:15,862 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:59:15,862 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:59:15,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:59:15,879 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:59:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:59:17,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:59:19,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 2896 trivial. 0 not checked. [2018-07-24 12:59:19,257 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:59:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 1322 proven. 127 refuted. 0 times theorem prover too weak. 1744 trivial. 0 not checked. [2018-07-24 12:59:21,014 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:59:21,016 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 17 [2018-07-24 12:59:21,016 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:59:21,018 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:59:21,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:59:21,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:59:21,019 INFO L87 Difference]: Start difference. First operand 171881 states and 207343 transitions. Second operand 14 states. [2018-07-24 12:59:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:59:53,512 INFO L93 Difference]: Finished difference Result 385792 states and 519881 transitions. [2018-07-24 12:59:53,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-07-24 12:59:53,513 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 2124 [2018-07-24 12:59:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:59:55,010 INFO L225 Difference]: With dead ends: 385792 [2018-07-24 12:59:55,010 INFO L226 Difference]: Without dead ends: 214752 [2018-07-24 12:59:55,228 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8640 GetRequests, 8553 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2426 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1473, Invalid=5499, Unknown=0, NotChecked=0, Total=6972 [2018-07-24 12:59:55,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214752 states. [2018-07-24 12:59:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214752 to 206591. [2018-07-24 12:59:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206591 states. [2018-07-24 13:00:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206591 states to 206591 states and 248160 transitions. [2018-07-24 13:00:00,188 INFO L78 Accepts]: Start accepts. Automaton has 206591 states and 248160 transitions. Word has length 2124 [2018-07-24 13:00:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:00:00,189 INFO L471 AbstractCegarLoop]: Abstraction has 206591 states and 248160 transitions. [2018-07-24 13:00:00,189 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 13:00:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 206591 states and 248160 transitions. [2018-07-24 13:00:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2097 [2018-07-24 13:00:00,628 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:00:00,629 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:00:00,630 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:00:00,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1204448938, now seen corresponding path program 1 times [2018-07-24 13:00:00,630 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:00:00,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:00:00,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:00:00,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:00:00,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:00:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:00:01,646 WARN L169 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 13:00:01,897 WARN L169 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-24 13:00:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 1292 proven. 494 refuted. 0 times theorem prover too weak. 1222 trivial. 0 not checked. [2018-07-24 13:00:13,970 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:00:13,970 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:00:13,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:00:13,978 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:00:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:00:14,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:00:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 1835 proven. 2 refuted. 0 times theorem prover too weak. 1171 trivial. 0 not checked. [2018-07-24 13:00:16,547 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:00:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 1510 proven. 636 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2018-07-24 13:00:18,683 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:00:18,683 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:00:18,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:00:18,698 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Received shutdown request... [2018-07-24 13:00:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:00:20,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:00:20,541 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 13:00:20,743 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:00:20,743 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 13:00:20,749 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 13:00:20,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 01:00:20 BoogieIcfgContainer [2018-07-24 13:00:20,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 13:00:20,750 INFO L168 Benchmark]: Toolchain (without parser) took 219911.21 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-07-24 13:00:20,751 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 13:00:20,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2555.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 232.5 MB). Peak memory consumption was 232.5 MB. Max. memory is 7.1 GB. [2018-07-24 13:00:20,752 INFO L168 Benchmark]: Boogie Procedure Inliner took 160.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 13:00:20,754 INFO L168 Benchmark]: Boogie Preprocessor took 640.91 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 855.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. [2018-07-24 13:00:20,755 INFO L168 Benchmark]: RCFGBuilder took 12877.39 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 157.8 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -26.2 MB). Peak memory consumption was 699.7 MB. Max. memory is 7.1 GB. [2018-07-24 13:00:20,756 INFO L168 Benchmark]: TraceAbstraction took 203671.01 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.3 GB in the beginning and 3.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-07-24 13:00:20,761 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2555.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 232.5 MB). Peak memory consumption was 232.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 160.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 640.91 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 855.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12877.39 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 157.8 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -26.2 MB). Peak memory consumption was 699.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203671.01 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.3 GB in the beginning and 3.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4763]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4763). Cancelled while BasicCegarLoop was analyzing trace of length 2097 with TraceHistMax 7, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 203.5s OverallTime, 10 OverallIterations, 8 TraceHistogramMax, 126.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1743 SDtfs, 55023 SDslu, 2752 SDs, 0 SdLazy, 72890 SolverSat, 25784 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25630 GetRequests, 25384 SyntacticMatches, 31 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3654 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206591occurred in iteration=9, 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: 11.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 15223 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 7.6s SatisfiabilityAnalysisTime, 25.5s InterpolantComputationTime, 22435 NumberOfCodeBlocks, 22435 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 35061 ConstructedInterpolants, 0 QuantifiedInterpolants, 60152107 SizeOfPredicates, 5 NumberOfNonLiveVariables, 17813 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 29 InterpolantComputations, 6 PerfectInterpolantSequences, 22671/24031 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/Problem04_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_13-00-20-776.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label02_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_13-00-20-776.csv Completed graceful shutdown