java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label16_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:55:52,754 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:55:52,760 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:55:52,772 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:55:52,772 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:55:52,774 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:55:52,775 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:55:52,777 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:55:52,779 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:55:52,779 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:55:52,780 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:55:52,781 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:55:52,782 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:55:52,783 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:55:52,784 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:55:52,785 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:55:52,786 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:55:52,788 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:55:52,790 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:55:52,791 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:55:52,792 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:55:52,794 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:55:52,796 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:55:52,797 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:55:52,797 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:55:52,798 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:55:52,799 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:55:52,800 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:55:52,801 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:55:52,802 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:55:52,802 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:55:52,803 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:55:52,803 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:55:52,804 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:55:52,805 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:55:52,806 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:55:52,806 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 11:55:52,825 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:55:52,825 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:55:52,826 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:55:52,826 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:55:52,827 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:55:52,827 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:55:52,827 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:55:52,827 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:55:52,827 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:55:52,828 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:55:52,828 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:55:52,828 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:55:52,829 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:55:52,829 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:55:52,829 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:55:52,829 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:55:52,830 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:55:52,830 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:55:52,830 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:55:52,830 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:55:52,830 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:55:52,831 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:55:52,831 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:55:52,831 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:55:52,831 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:55:52,832 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:55:52,832 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:55:52,832 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:55:52,832 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:55:52,832 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:55:52,833 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:55:52,833 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:55:52,833 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:55:52,876 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:55:52,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:55:52,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:55:52,894 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:55:52,894 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:55:52,895 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label16_false-unreach-call.c [2018-07-24 11:55:53,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b123fd4/b0dc72cd97e843ad90db8372bcb56321/FLAG591ac0152 [2018-07-24 11:55:53,796 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:55:53,797 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label16_false-unreach-call.c [2018-07-24 11:55:53,841 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b123fd4/b0dc72cd97e843ad90db8372bcb56321/FLAG591ac0152 [2018-07-24 11:55:53,862 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b123fd4/b0dc72cd97e843ad90db8372bcb56321 [2018-07-24 11:55:53,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:55:53,875 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:55:53,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:55:53,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:55:53,884 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:55:53,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:55:53" (1/1) ... [2018-07-24 11:55:53,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d65a7e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:53, skipping insertion in model container [2018-07-24 11:55:53,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:55:53" (1/1) ... [2018-07-24 11:55:54,261 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:55:55,403 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:55:55,423 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:55:56,205 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:55:56,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:56 WrapperNode [2018-07-24 11:55:56,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:55:56,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:55:56,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:55:56,533 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:55:56,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:56" (1/1) ... [2018-07-24 11:55:56,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:56" (1/1) ... [2018-07-24 11:55:56,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:55:56,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:55:56,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:55:56,905 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:55:57,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:56" (1/1) ... [2018-07-24 11:55:57,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:56" (1/1) ... [2018-07-24 11:55:57,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:56" (1/1) ... [2018-07-24 11:55:57,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:56" (1/1) ... [2018-07-24 11:55:58,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:56" (1/1) ... [2018-07-24 11:55:58,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:56" (1/1) ... [2018-07-24 11:55:58,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:56" (1/1) ... [2018-07-24 11:55:58,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:55:58,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:55:58,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:55:58,206 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:55:58,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:56" (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 11:55:58,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:55:58,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:55:58,268 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:55:58,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:55:58,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:55:58,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:55:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:55:58,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:55:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:55:58,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:55:58,269 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:55:58,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:55:58,270 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:55:58,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:56:13,997 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:56:13,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:56:13 BoogieIcfgContainer [2018-07-24 11:56:13,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:56:13,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:56:13,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:56:14,002 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:56:14,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:55:53" (1/3) ... [2018-07-24 11:56:14,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd9731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:56:14, skipping insertion in model container [2018-07-24 11:56:14,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:55:56" (2/3) ... [2018-07-24 11:56:14,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd9731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:56:14, skipping insertion in model container [2018-07-24 11:56:14,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:56:13" (3/3) ... [2018-07-24 11:56:14,006 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label16_false-unreach-call.c [2018-07-24 11:56:14,019 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:56:14,029 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:56:14,098 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:56:14,098 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:56:14,099 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:56:14,099 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:56:14,099 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:56:14,099 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:56:14,099 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:56:14,099 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:56:14,100 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:56:14,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 11:56:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-07-24 11:56:14,168 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:14,169 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] [2018-07-24 11:56:14,170 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:14,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1230957187, now seen corresponding path program 1 times [2018-07-24 11:56:14,178 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:14,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:14,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:14,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:14,226 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:14,622 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:56:14,724 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 11:56:14,727 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:56:14,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:56:14,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:14,733 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:56:14,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:56:14,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:56:14,747 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-07-24 11:56:24,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:56:24,713 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-07-24 11:56:24,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:56:24,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-07-24 11:56:24,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:56:24,761 INFO L225 Difference]: With dead ends: 3087 [2018-07-24 11:56:24,761 INFO L226 Difference]: Without dead ends: 1965 [2018-07-24 11:56:24,772 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:56:24,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-07-24 11:56:24,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-07-24 11:56:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-07-24 11:56:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-07-24 11:56:24,928 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 29 [2018-07-24 11:56:24,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:56:24,929 INFO L471 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-07-24 11:56:24,929 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:56:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-07-24 11:56:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-07-24 11:56:24,935 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:56:24,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:56:24,936 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:56:24,939 INFO L82 PathProgramCache]: Analyzing trace with hash 258983290, now seen corresponding path program 1 times [2018-07-24 11:56:24,939 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:56:24,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:24,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:56:24,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:56:24,942 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:56:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:56:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:56:25,245 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:56:25,245 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:56:25,246 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:56:25,248 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:56:25,248 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:56:25,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:56:25,249 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 5 states. [2018-07-24 11:57:02,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:57:02,062 INFO L93 Difference]: Finished difference Result 7493 states and 13755 transitions. [2018-07-24 11:57:02,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:57:02,063 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2018-07-24 11:57:02,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:02,112 INFO L225 Difference]: With dead ends: 7493 [2018-07-24 11:57:02,112 INFO L226 Difference]: Without dead ends: 5540 [2018-07-24 11:57:02,126 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:57:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5540 states. [2018-07-24 11:57:02,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5540 to 5410. [2018-07-24 11:57:02,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5410 states. [2018-07-24 11:57:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 8850 transitions. [2018-07-24 11:57:02,343 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 8850 transitions. Word has length 106 [2018-07-24 11:57:02,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:02,344 INFO L471 AbstractCegarLoop]: Abstraction has 5410 states and 8850 transitions. [2018-07-24 11:57:02,344 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:57:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 8850 transitions. [2018-07-24 11:57:02,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-24 11:57:02,359 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:02,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:02,359 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:02,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1280303004, now seen corresponding path program 1 times [2018-07-24 11:57:02,360 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:02,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:02,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:02,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:02,362 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:02,586 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:57:02,586 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:57:02,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:57:02,587 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:57:02,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:57:02,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:57:02,588 INFO L87 Difference]: Start difference. First operand 5410 states and 8850 transitions. Second operand 5 states. [2018-07-24 11:57:17,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:57:17,576 INFO L93 Difference]: Finished difference Result 16143 states and 27098 transitions. [2018-07-24 11:57:17,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:57:17,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-07-24 11:57:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:17,643 INFO L225 Difference]: With dead ends: 16143 [2018-07-24 11:57:17,643 INFO L226 Difference]: Without dead ends: 10739 [2018-07-24 11:57:17,668 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:57:17,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10739 states. [2018-07-24 11:57:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10739 to 10543. [2018-07-24 11:57:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10543 states. [2018-07-24 11:57:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10543 states to 10543 states and 16005 transitions. [2018-07-24 11:57:17,981 INFO L78 Accepts]: Start accepts. Automaton has 10543 states and 16005 transitions. Word has length 120 [2018-07-24 11:57:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:17,982 INFO L471 AbstractCegarLoop]: Abstraction has 10543 states and 16005 transitions. [2018-07-24 11:57:17,982 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:57:17,982 INFO L276 IsEmpty]: Start isEmpty. Operand 10543 states and 16005 transitions. [2018-07-24 11:57:17,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-07-24 11:57:17,985 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:17,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:17,986 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:17,987 INFO L82 PathProgramCache]: Analyzing trace with hash -741455534, now seen corresponding path program 1 times [2018-07-24 11:57:17,987 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:17,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:17,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:17,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:17,988 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:18,407 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:57:18,408 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:57:18,408 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:57:18,409 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:57:18,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:57:18,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:57:18,411 INFO L87 Difference]: Start difference. First operand 10543 states and 16005 transitions. Second operand 5 states. [2018-07-24 11:57:58,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:57:58,124 INFO L93 Difference]: Finished difference Result 31590 states and 49847 transitions. [2018-07-24 11:57:58,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:57:58,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-07-24 11:57:58,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:57:58,219 INFO L225 Difference]: With dead ends: 31590 [2018-07-24 11:57:58,220 INFO L226 Difference]: Without dead ends: 21053 [2018-07-24 11:57:58,267 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 11:57:58,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21053 states. [2018-07-24 11:57:58,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21053 to 20903. [2018-07-24 11:57:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20903 states. [2018-07-24 11:57:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20903 states to 20903 states and 32224 transitions. [2018-07-24 11:57:58,791 INFO L78 Accepts]: Start accepts. Automaton has 20903 states and 32224 transitions. Word has length 137 [2018-07-24 11:57:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:57:58,792 INFO L471 AbstractCegarLoop]: Abstraction has 20903 states and 32224 transitions. [2018-07-24 11:57:58,792 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:57:58,792 INFO L276 IsEmpty]: Start isEmpty. Operand 20903 states and 32224 transitions. [2018-07-24 11:57:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-07-24 11:57:58,797 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:57:58,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:58,798 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:57:58,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1241737930, now seen corresponding path program 1 times [2018-07-24 11:57:58,798 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:57:58,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:58,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:57:58,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:57:58,801 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:57:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:57:59,096 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:57:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:57:59,507 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:57:59,507 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:57:59,507 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:57:59,508 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:57:59,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:57:59,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:57:59,508 INFO L87 Difference]: Start difference. First operand 20903 states and 32224 transitions. Second operand 6 states. [2018-07-24 11:58:15,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:58:15,354 INFO L93 Difference]: Finished difference Result 69191 states and 117293 transitions. [2018-07-24 11:58:15,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:58:15,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-07-24 11:58:15,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:58:15,560 INFO L225 Difference]: With dead ends: 69191 [2018-07-24 11:58:15,561 INFO L226 Difference]: Without dead ends: 48294 [2018-07-24 11:58:15,654 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 11:58:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48294 states. [2018-07-24 11:58:16,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48294 to 48104. [2018-07-24 11:58:16,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48104 states. [2018-07-24 11:58:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48104 states to 48104 states and 71025 transitions. [2018-07-24 11:58:17,041 INFO L78 Accepts]: Start accepts. Automaton has 48104 states and 71025 transitions. Word has length 140 [2018-07-24 11:58:17,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:58:17,042 INFO L471 AbstractCegarLoop]: Abstraction has 48104 states and 71025 transitions. [2018-07-24 11:58:17,042 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:58:17,042 INFO L276 IsEmpty]: Start isEmpty. Operand 48104 states and 71025 transitions. [2018-07-24 11:58:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-07-24 11:58:17,055 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:58:17,056 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:58:17,056 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:58:17,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1742212612, now seen corresponding path program 1 times [2018-07-24 11:58:17,056 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:58:17,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:17,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:17,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:17,057 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:58:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:17,595 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 44 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:58:17,596 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:58:17,596 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 11:58:17,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:17,611 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:58:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:17,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:58:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-24 11:58:18,218 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:58:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 44 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:58:18,895 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:58:18,896 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:58:18,896 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:58:18,897 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:58:18,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:58:18,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:58:18,900 INFO L87 Difference]: Start difference. First operand 48104 states and 71025 transitions. Second operand 5 states. [2018-07-24 11:58:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:58:39,886 INFO L93 Difference]: Finished difference Result 140318 states and 220680 transitions. [2018-07-24 11:58:39,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:58:39,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2018-07-24 11:58:39,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:58:40,415 INFO L225 Difference]: With dead ends: 140318 [2018-07-24 11:58:40,415 INFO L226 Difference]: Without dead ends: 92220 [2018-07-24 11:58:40,729 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 447 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:58:40,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92220 states. [2018-07-24 11:58:43,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92220 to 91966. [2018-07-24 11:58:43,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91966 states. [2018-07-24 11:58:43,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91966 states to 91966 states and 133367 transitions. [2018-07-24 11:58:43,720 INFO L78 Accepts]: Start accepts. Automaton has 91966 states and 133367 transitions. Word has length 225 [2018-07-24 11:58:43,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:58:43,721 INFO L471 AbstractCegarLoop]: Abstraction has 91966 states and 133367 transitions. [2018-07-24 11:58:43,721 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:58:43,721 INFO L276 IsEmpty]: Start isEmpty. Operand 91966 states and 133367 transitions. [2018-07-24 11:58:43,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-07-24 11:58:43,740 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:58:43,740 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:58:43,741 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:58:43,741 INFO L82 PathProgramCache]: Analyzing trace with hash 2138381370, now seen corresponding path program 1 times [2018-07-24 11:58:43,741 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:58:43,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:43,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:43,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:58:43,742 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:58:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:44,038 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:58:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 44 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:58:44,249 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:58:44,249 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 11:58:44,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:58:44,264 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:58:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:58:44,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:58:44,512 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-24 11:58:44,513 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:58:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 44 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:58:44,722 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:58:44,723 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 11:58:44,723 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:58:44,723 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:58:44,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:58:44,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:58:44,724 INFO L87 Difference]: Start difference. First operand 91966 states and 133367 transitions. Second operand 5 states. [2018-07-24 11:58:56,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:58:56,587 INFO L93 Difference]: Finished difference Result 217752 states and 351064 transitions. [2018-07-24 11:58:56,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:58:56,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2018-07-24 11:58:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:58:57,152 INFO L225 Difference]: With dead ends: 217752 [2018-07-24 11:58:57,153 INFO L226 Difference]: Without dead ends: 125792 [2018-07-24 11:58:57,360 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 482 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:58:57,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125792 states. [2018-07-24 11:59:00,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125792 to 125544. [2018-07-24 11:59:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125544 states. [2018-07-24 11:59:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125544 states to 125544 states and 174531 transitions. [2018-07-24 11:59:00,602 INFO L78 Accepts]: Start accepts. Automaton has 125544 states and 174531 transitions. Word has length 244 [2018-07-24 11:59:00,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:59:00,603 INFO L471 AbstractCegarLoop]: Abstraction has 125544 states and 174531 transitions. [2018-07-24 11:59:00,603 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:59:00,603 INFO L276 IsEmpty]: Start isEmpty. Operand 125544 states and 174531 transitions. [2018-07-24 11:59:00,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-24 11:59:00,632 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:59:00,632 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:59:00,632 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:59:00,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1560816988, now seen corresponding path program 1 times [2018-07-24 11:59:00,633 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:59:00,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:59:00,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:00,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:59:00,634 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:59:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:00,944 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:59:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 66 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 11:59:01,384 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:59:01,384 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:59:01,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:01,402 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:59:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:01,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:59:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-07-24 11:59:02,013 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:59:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 66 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 11:59:02,547 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:59:02,548 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 11:59:02,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:59:02,548 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:59:02,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:59:02,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:59:02,549 INFO L87 Difference]: Start difference. First operand 125544 states and 174531 transitions. Second operand 5 states. [2018-07-24 11:59:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:59:19,709 INFO L93 Difference]: Finished difference Result 332441 states and 473661 transitions. [2018-07-24 11:59:19,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:59:19,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2018-07-24 11:59:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:59:21,553 INFO L225 Difference]: With dead ends: 332441 [2018-07-24 11:59:21,554 INFO L226 Difference]: Without dead ends: 207707 [2018-07-24 11:59:21,736 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 553 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:59:21,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207707 states. [2018-07-24 11:59:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207707 to 206360. [2018-07-24 11:59:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206360 states. [2018-07-24 11:59:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206360 states to 206360 states and 273880 transitions. [2018-07-24 11:59:25,869 INFO L78 Accepts]: Start accepts. Automaton has 206360 states and 273880 transitions. Word has length 279 [2018-07-24 11:59:25,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:59:25,869 INFO L471 AbstractCegarLoop]: Abstraction has 206360 states and 273880 transitions. [2018-07-24 11:59:25,869 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:59:25,869 INFO L276 IsEmpty]: Start isEmpty. Operand 206360 states and 273880 transitions. [2018-07-24 11:59:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-07-24 11:59:25,917 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:59:25,917 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:25,917 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:59:25,918 INFO L82 PathProgramCache]: Analyzing trace with hash 217371366, now seen corresponding path program 1 times [2018-07-24 11:59:25,918 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:59:25,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:59:25,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:25,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:59:25,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:59:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:26,312 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:59:26,312 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:59:26,312 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 11:59:26,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:26,321 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:59:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:26,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:59:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:59:26,656 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:59:26,786 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:59:26,807 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:59:26,807 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:59:26,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:59:26,828 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:59:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:59:27,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:59:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:59:27,234 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:59:29,290 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 11:59:29,292 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:59:29,292 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-07-24 11:59:29,292 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:59:29,293 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:59:29,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:59:29,293 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 11:59:29,293 INFO L87 Difference]: Start difference. First operand 206360 states and 273880 transitions. Second operand 9 states. Received shutdown request... [2018-07-24 11:59:38,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 11:59:38,915 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:59:38,924 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:59:38,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:59:38 BoogieIcfgContainer [2018-07-24 11:59:38,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:59:38,925 INFO L168 Benchmark]: Toolchain (without parser) took 225051.56 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 22.6 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-24 11:59:38,927 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 11:59:38,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2655.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-07-24 11:59:38,928 INFO L168 Benchmark]: Boogie Procedure Inliner took 372.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 11:59:38,928 INFO L168 Benchmark]: Boogie Preprocessor took 1300.94 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 11:59:38,929 INFO L168 Benchmark]: RCFGBuilder took 15792.15 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 147.8 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 97.0 MB). Peak memory consumption was 750.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:59:38,930 INFO L168 Benchmark]: TraceAbstraction took 204925.51 ms. Allocated memory was 2.7 GB in the beginning and 3.2 GB in the end (delta: 448.8 MB). Free memory was 2.3 GB in the beginning and 1.4 GB in the end (delta: 875.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-07-24 11:59:38,936 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 2655.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 372.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1300.94 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15792.15 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 147.8 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 97.0 MB). Peak memory consumption was 750.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204925.51 ms. Allocated memory was 2.7 GB in the beginning and 3.2 GB in the end (delta: 448.8 MB). Free memory was 2.3 GB in the beginning and 1.4 GB in the end (delta: 875.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 78). Cancelled while BasicCegarLoop was constructing difference of abstraction (206360states) and interpolant automaton (currently 15 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (74353 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 204.8s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 181.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3520 SDtfs, 30524 SDslu, 4632 SDs, 0 SdLazy, 58910 SolverSat, 11982 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 153.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2849 GetRequests, 2763 SyntacticMatches, 11 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206360occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 12.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 2521 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 2979 NumberOfCodeBlocks, 2979 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4342 ConstructedInterpolants, 0 QuantifiedInterpolants, 3008269 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2618 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 2666/3252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label16_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-59-38-951.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label16_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-59-38-951.csv Completed graceful shutdown