java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:54:59,235 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:54:59,237 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:54:59,249 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:54:59,249 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:54:59,250 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:54:59,251 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:54:59,253 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:54:59,255 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:54:59,256 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:54:59,257 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:54:59,257 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:54:59,258 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:54:59,259 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:54:59,260 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:54:59,261 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:54:59,262 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:54:59,267 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:54:59,271 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:54:59,276 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:54:59,280 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:54:59,281 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:54:59,287 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:54:59,287 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:54:59,288 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:54:59,289 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:54:59,291 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:54:59,294 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:54:59,295 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:54:59,296 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:54:59,297 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:54:59,297 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:54:59,301 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:54:59,302 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:54:59,304 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:54:59,304 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:54:59,305 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 [2018-09-10 11:54:59,322 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:54:59,322 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:54:59,323 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:54:59,323 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:54:59,324 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:54:59,324 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:54:59,324 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:54:59,324 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:54:59,324 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:54:59,325 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:54:59,325 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:54:59,326 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:54:59,326 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:54:59,326 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:54:59,326 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:54:59,326 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:54:59,327 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:54:59,327 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:54:59,327 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:54:59,327 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:54:59,327 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:54:59,328 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:54:59,328 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:54:59,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:54:59,328 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:54:59,328 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:54:59,329 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:54:59,329 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:54:59,329 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:54:59,329 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:54:59,329 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:54:59,329 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:54:59,330 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:54:59,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:54:59,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:54:59,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:54:59,395 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:54:59,395 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:54:59,396 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c [2018-09-10 11:54:59,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83298aa8/d0ab653cf8d84fafb695e5f5f3d99e9a/FLAGab2c3ba69 [2018-09-10 11:55:00,238 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:55:00,240 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label27_true-unreach-call.c [2018-09-10 11:55:00,276 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83298aa8/d0ab653cf8d84fafb695e5f5f3d99e9a/FLAGab2c3ba69 [2018-09-10 11:55:00,293 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b83298aa8/d0ab653cf8d84fafb695e5f5f3d99e9a [2018-09-10 11:55:00,308 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:55:00,314 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:55:00,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:55:00,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:55:00,323 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:55:00,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:55:00" (1/1) ... [2018-09-10 11:55:00,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab40953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:00, skipping insertion in model container [2018-09-10 11:55:00,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:55:00" (1/1) ... [2018-09-10 11:55:00,692 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:55:01,813 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:55:01,833 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:55:02,741 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:55:03,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:03 WrapperNode [2018-09-10 11:55:03,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:55:03,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:55:03,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:55:03,169 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:55:03,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:03" (1/1) ... [2018-09-10 11:55:03,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:03" (1/1) ... [2018-09-10 11:55:03,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:55:03,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:55:03,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:55:03,515 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:55:04,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:03" (1/1) ... [2018-09-10 11:55:04,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:03" (1/1) ... [2018-09-10 11:55:04,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:03" (1/1) ... [2018-09-10 11:55:04,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:03" (1/1) ... [2018-09-10 11:55:04,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:03" (1/1) ... [2018-09-10 11:55:04,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:03" (1/1) ... [2018-09-10 11:55:04,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:03" (1/1) ... [2018-09-10 11:55:04,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:55:04,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:55:04,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:55:04,772 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:55:04,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:03" (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 [2018-09-10 11:55:04,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:55:04,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:55:04,856 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 [2018-09-10 11:55:04,856 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 [2018-09-10 11:55:04,856 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 [2018-09-10 11:55:04,856 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 [2018-09-10 11:55:04,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:55:04,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:55:04,857 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 [2018-09-10 11:55:04,857 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 [2018-09-10 11:55:04,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:55:04,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:55:04,858 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 [2018-09-10 11:55:04,858 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 [2018-09-10 11:55:18,752 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:55:18,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:55:18 BoogieIcfgContainer [2018-09-10 11:55:18,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:55:18,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:55:18,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:55:18,757 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:55:18,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:55:00" (1/3) ... [2018-09-10 11:55:18,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a6efcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:55:18, skipping insertion in model container [2018-09-10 11:55:18,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:55:03" (2/3) ... [2018-09-10 11:55:18,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a6efcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:55:18, skipping insertion in model container [2018-09-10 11:55:18,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:55:18" (3/3) ... [2018-09-10 11:55:18,761 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label27_true-unreach-call.c [2018-09-10 11:55:18,772 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:55:18,782 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:55:18,848 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:55:18,849 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:55:18,849 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:55:18,849 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:55:18,849 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:55:18,849 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:55:18,850 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:55:18,850 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:55:18,850 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:55:18,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:55:18,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-10 11:55:18,903 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:18,905 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:55:18,906 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:55:18,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1018133508, now seen corresponding path program 1 times [2018-09-10 11:55:18,916 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:18,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:18,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:18,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:18,977 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:55:19,404 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:55:19,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:55:19,405 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:55:19,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:55:19,426 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:55:19,427 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:55:19,430 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-10 11:55:35,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:55:35,456 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-09-10 11:55:35,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:55:35,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-09-10 11:55:35,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:55:35,512 INFO L225 Difference]: With dead ends: 3968 [2018-09-10 11:55:35,513 INFO L226 Difference]: Without dead ends: 2842 [2018-09-10 11:55:35,527 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:55:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-09-10 11:55:35,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-09-10 11:55:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-09-10 11:55:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-09-10 11:55:35,722 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 52 [2018-09-10 11:55:35,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:55:35,723 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-09-10 11:55:35,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:55:35,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-09-10 11:55:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-10 11:55:35,732 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:35,732 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:55:35,733 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:55:35,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1713454088, now seen corresponding path program 1 times [2018-09-10 11:55:35,734 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:35,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:35,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:35,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:35,737 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:36,105 WARN L175 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:55:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:55:36,320 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:55:36,321 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:55:36,321 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:55:36,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:55:36,323 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:55:36,323 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:55:36,324 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 6 states. [2018-09-10 11:55:54,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:55:54,049 INFO L93 Difference]: Finished difference Result 7236 states and 13035 transitions. [2018-09-10 11:55:54,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:55:54,049 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-09-10 11:55:54,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:55:54,088 INFO L225 Difference]: With dead ends: 7236 [2018-09-10 11:55:54,088 INFO L226 Difference]: Without dead ends: 5261 [2018-09-10 11:55:54,099 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:55:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2018-09-10 11:55:54,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5234. [2018-09-10 11:55:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5234 states. [2018-09-10 11:55:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 8155 transitions. [2018-09-10 11:55:54,259 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 8155 transitions. Word has length 122 [2018-09-10 11:55:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:55:54,259 INFO L480 AbstractCegarLoop]: Abstraction has 5234 states and 8155 transitions. [2018-09-10 11:55:54,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:55:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 8155 transitions. [2018-09-10 11:55:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-10 11:55:54,269 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:54,270 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:55:54,270 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:55:54,270 INFO L82 PathProgramCache]: Analyzing trace with hash -2040808108, now seen corresponding path program 1 times [2018-09-10 11:55:54,270 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:54,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:54,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:54,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:54,276 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:55:54,581 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:55:54,581 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:55:54,581 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:55:54,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:55:54,582 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:55:54,582 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:55:54,582 INFO L87 Difference]: Start difference. First operand 5234 states and 8155 transitions. Second operand 6 states. [2018-09-10 11:55:55,677 WARN L175 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-10 11:56:15,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:15,785 INFO L93 Difference]: Finished difference Result 16620 states and 27132 transitions. [2018-09-10 11:56:15,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 11:56:15,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-09-10 11:56:15,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:15,868 INFO L225 Difference]: With dead ends: 16620 [2018-09-10 11:56:15,868 INFO L226 Difference]: Without dead ends: 11392 [2018-09-10 11:56:15,893 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:56:15,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11392 states. [2018-09-10 11:56:16,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11392 to 11315. [2018-09-10 11:56:16,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11315 states. [2018-09-10 11:56:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11315 states to 11315 states and 16080 transitions. [2018-09-10 11:56:16,223 INFO L78 Accepts]: Start accepts. Automaton has 11315 states and 16080 transitions. Word has length 124 [2018-09-10 11:56:16,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:16,223 INFO L480 AbstractCegarLoop]: Abstraction has 11315 states and 16080 transitions. [2018-09-10 11:56:16,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:56:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 11315 states and 16080 transitions. [2018-09-10 11:56:16,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-10 11:56:16,229 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:16,230 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:56:16,230 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:56:16,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1435667527, now seen corresponding path program 1 times [2018-09-10 11:56:16,230 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:16,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:16,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:16,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:16,232 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:16,478 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:56:16,478 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:56:16,478 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:16,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:56:16,479 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:56:16,479 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:56:16,479 INFO L87 Difference]: Start difference. First operand 11315 states and 16080 transitions. Second operand 6 states. [2018-09-10 11:56:29,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:29,943 INFO L93 Difference]: Finished difference Result 33998 states and 52586 transitions. [2018-09-10 11:56:29,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:56:29,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-09-10 11:56:29,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:30,066 INFO L225 Difference]: With dead ends: 33998 [2018-09-10 11:56:30,066 INFO L226 Difference]: Without dead ends: 22689 [2018-09-10 11:56:30,131 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:56:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22689 states. [2018-09-10 11:56:30,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22689 to 22388. [2018-09-10 11:56:30,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22388 states. [2018-09-10 11:56:30,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22388 states to 22388 states and 32214 transitions. [2018-09-10 11:56:30,700 INFO L78 Accepts]: Start accepts. Automaton has 22388 states and 32214 transitions. Word has length 135 [2018-09-10 11:56:30,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:30,701 INFO L480 AbstractCegarLoop]: Abstraction has 22388 states and 32214 transitions. [2018-09-10 11:56:30,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:56:30,701 INFO L276 IsEmpty]: Start isEmpty. Operand 22388 states and 32214 transitions. [2018-09-10 11:56:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-10 11:56:30,705 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:30,706 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:56:30,706 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:56:30,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1623757476, now seen corresponding path program 1 times [2018-09-10 11:56:30,706 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:30,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:30,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:30,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:30,708 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:30,885 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:56:30,885 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:56:30,885 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:30,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:56:30,886 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:56:30,886 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:56:30,887 INFO L87 Difference]: Start difference. First operand 22388 states and 32214 transitions. Second operand 3 states. [2018-09-10 11:56:38,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:38,399 INFO L93 Difference]: Finished difference Result 44772 states and 64601 transitions. [2018-09-10 11:56:38,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:56:38,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2018-09-10 11:56:38,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:38,478 INFO L225 Difference]: With dead ends: 44772 [2018-09-10 11:56:38,478 INFO L226 Difference]: Without dead ends: 22390 [2018-09-10 11:56:38,525 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:56:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22390 states. [2018-09-10 11:56:38,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22390 to 22371. [2018-09-10 11:56:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22371 states. [2018-09-10 11:56:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22371 states to 22371 states and 29249 transitions. [2018-09-10 11:56:38,989 INFO L78 Accepts]: Start accepts. Automaton has 22371 states and 29249 transitions. Word has length 168 [2018-09-10 11:56:38,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:38,990 INFO L480 AbstractCegarLoop]: Abstraction has 22371 states and 29249 transitions. [2018-09-10 11:56:38,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:56:38,990 INFO L276 IsEmpty]: Start isEmpty. Operand 22371 states and 29249 transitions. [2018-09-10 11:56:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-10 11:56:38,995 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:38,996 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:56:38,996 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:56:38,996 INFO L82 PathProgramCache]: Analyzing trace with hash -332098726, now seen corresponding path program 1 times [2018-09-10 11:56:38,996 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:38,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:38,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:38,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:38,997 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:39,232 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:56:39,232 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:56:39,233 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:39,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:56:39,233 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:56:39,234 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:56:39,234 INFO L87 Difference]: Start difference. First operand 22371 states and 29249 transitions. Second operand 4 states. [2018-09-10 11:56:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:49,702 INFO L93 Difference]: Finished difference Result 64552 states and 89363 transitions. [2018-09-10 11:56:49,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:56:49,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2018-09-10 11:56:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:49,853 INFO L225 Difference]: With dead ends: 64552 [2018-09-10 11:56:49,853 INFO L226 Difference]: Without dead ends: 42187 [2018-09-10 11:56:49,907 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:56:49,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42187 states. [2018-09-10 11:56:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42187 to 42183. [2018-09-10 11:56:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42183 states. [2018-09-10 11:56:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42183 states to 42183 states and 55622 transitions. [2018-09-10 11:56:50,600 INFO L78 Accepts]: Start accepts. Automaton has 42183 states and 55622 transitions. Word has length 173 [2018-09-10 11:56:50,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:50,600 INFO L480 AbstractCegarLoop]: Abstraction has 42183 states and 55622 transitions. [2018-09-10 11:56:50,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:56:50,601 INFO L276 IsEmpty]: Start isEmpty. Operand 42183 states and 55622 transitions. [2018-09-10 11:56:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-10 11:56:50,612 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:50,613 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:56:50,613 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:56:50,613 INFO L82 PathProgramCache]: Analyzing trace with hash 480371756, now seen corresponding path program 1 times [2018-09-10 11:56:50,613 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:50,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:50,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:50,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:50,615 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 90 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:56:50,906 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:56:50,906 INFO L197 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 [2018-09-10 11:56:51,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:51,162 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:56:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:51,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:56:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-09-10 11:56:51,488 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:56:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 90 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:56:52,103 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:56:52,103 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-10 11:56:52,103 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:52,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:56:52,104 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:56:52,105 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:56:52,105 INFO L87 Difference]: Start difference. First operand 42183 states and 55622 transitions. Second operand 5 states. [2018-09-10 11:57:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:14,359 INFO L93 Difference]: Finished difference Result 122870 states and 174778 transitions. [2018-09-10 11:57:14,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:57:14,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2018-09-10 11:57:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:14,796 INFO L225 Difference]: With dead ends: 122870 [2018-09-10 11:57:14,796 INFO L226 Difference]: Without dead ends: 80693 [2018-09-10 11:57:14,946 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 454 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:57:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80693 states. [2018-09-10 11:57:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80693 to 79427. [2018-09-10 11:57:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79427 states. [2018-09-10 11:57:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79427 states to 79427 states and 108584 transitions. [2018-09-10 11:57:17,094 INFO L78 Accepts]: Start accepts. Automaton has 79427 states and 108584 transitions. Word has length 228 [2018-09-10 11:57:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:17,094 INFO L480 AbstractCegarLoop]: Abstraction has 79427 states and 108584 transitions. [2018-09-10 11:57:17,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:57:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 79427 states and 108584 transitions. [2018-09-10 11:57:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-10 11:57:17,106 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:17,107 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:57:17,107 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:57:17,107 INFO L82 PathProgramCache]: Analyzing trace with hash 234377704, now seen corresponding path program 1 times [2018-09-10 11:57:17,107 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:17,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:17,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:17,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:17,109 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 90 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:57:17,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:57:17,512 INFO L197 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 [2018-09-10 11:57:17,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:17,528 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:57:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:17,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:57:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-09-10 11:57:17,822 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 90 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:57:18,746 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:57:18,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-10 11:57:18,746 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:18,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:57:18,747 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:57:18,747 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:57:18,747 INFO L87 Difference]: Start difference. First operand 79427 states and 108584 transitions. Second operand 5 states. [2018-09-10 11:57:38,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:38,712 INFO L93 Difference]: Finished difference Result 197114 states and 293146 transitions. [2018-09-10 11:57:38,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:57:38,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2018-09-10 11:57:38,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:39,218 INFO L225 Difference]: With dead ends: 197114 [2018-09-10 11:57:39,219 INFO L226 Difference]: Without dead ends: 117693 [2018-09-10 11:57:39,378 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 458 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:57:39,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117693 states. [2018-09-10 11:57:41,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117693 to 117120. [2018-09-10 11:57:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117120 states. [2018-09-10 11:57:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117120 states to 117120 states and 169227 transitions. [2018-09-10 11:57:42,005 INFO L78 Accepts]: Start accepts. Automaton has 117120 states and 169227 transitions. Word has length 230 [2018-09-10 11:57:42,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:42,005 INFO L480 AbstractCegarLoop]: Abstraction has 117120 states and 169227 transitions. [2018-09-10 11:57:42,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:57:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 117120 states and 169227 transitions. [2018-09-10 11:57:42,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-10 11:57:42,016 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:42,017 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 11:57:42,017 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:57:42,017 INFO L82 PathProgramCache]: Analyzing trace with hash 936256856, now seen corresponding path program 1 times [2018-09-10 11:57:42,017 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:42,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:42,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:42,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:42,019 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:42,363 WARN L175 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:57:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 11:57:42,460 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:57:42,460 INFO L197 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 [2018-09-10 11:57:42,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:42,468 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:57:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:42,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:57:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 11:57:43,622 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:57:43,942 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:57:43,942 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:57:43,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:43,959 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:57:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:44,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:57:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 11:57:44,327 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 11:57:44,577 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-10 11:57:44,577 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 7, 8, 5] total 17 [2018-09-10 11:57:44,577 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:44,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:57:44,578 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:57:44,578 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-10 11:57:44,578 INFO L87 Difference]: Start difference. First operand 117120 states and 169227 transitions. Second operand 5 states. [2018-09-10 11:57:53,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:53,846 INFO L93 Difference]: Finished difference Result 234829 states and 342263 transitions. [2018-09-10 11:57:53,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:57:53,847 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2018-09-10 11:57:53,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:54,187 INFO L225 Difference]: With dead ends: 234829 [2018-09-10 11:57:54,187 INFO L226 Difference]: Without dead ends: 117715 [2018-09-10 11:57:54,341 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 936 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-09-10 11:57:54,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117715 states. [2018-09-10 11:57:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117715 to 117593. [2018-09-10 11:57:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117593 states. [2018-09-10 11:57:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117593 states to 117593 states and 149359 transitions. [2018-09-10 11:57:55,710 INFO L78 Accepts]: Start accepts. Automaton has 117593 states and 149359 transitions. Word has length 238 [2018-09-10 11:57:55,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:57:55,711 INFO L480 AbstractCegarLoop]: Abstraction has 117593 states and 149359 transitions. [2018-09-10 11:57:55,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:57:55,711 INFO L276 IsEmpty]: Start isEmpty. Operand 117593 states and 149359 transitions. [2018-09-10 11:57:55,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-10 11:57:55,735 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:57:55,736 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:57:55,736 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:57:55,736 INFO L82 PathProgramCache]: Analyzing trace with hash -124333094, now seen corresponding path program 1 times [2018-09-10 11:57:55,736 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:57:55,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:55,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:55,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:57:55,738 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:57:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:55,968 WARN L175 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:57:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 135 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 11:57:56,046 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:57:56,046 INFO L197 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 [2018-09-10 11:57:56,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:57:56,054 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:57:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:57:56,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:57:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-09-10 11:57:56,726 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:57:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 135 proven. 140 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 11:57:57,387 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:57:57,387 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-10 11:57:57,387 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:57:57,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:57:57,388 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:57:57,388 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:57:57,388 INFO L87 Difference]: Start difference. First operand 117593 states and 149359 transitions. Second operand 5 states. [2018-09-10 11:58:12,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:12,353 INFO L93 Difference]: Finished difference Result 290663 states and 383170 transitions. [2018-09-10 11:58:12,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:58:12,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2018-09-10 11:58:12,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:12,893 INFO L225 Difference]: With dead ends: 290663 [2018-09-10 11:58:12,893 INFO L226 Difference]: Without dead ends: 173880 [2018-09-10 11:58:13,991 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 639 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:58:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173880 states. [2018-09-10 11:58:15,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173880 to 173409. [2018-09-10 11:58:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173409 states. [2018-09-10 11:58:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173409 states to 173409 states and 214622 transitions. [2018-09-10 11:58:16,099 INFO L78 Accepts]: Start accepts. Automaton has 173409 states and 214622 transitions. Word has length 322 [2018-09-10 11:58:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:16,099 INFO L480 AbstractCegarLoop]: Abstraction has 173409 states and 214622 transitions. [2018-09-10 11:58:16,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:58:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 173409 states and 214622 transitions. [2018-09-10 11:58:16,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-09-10 11:58:16,115 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:16,115 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:58:16,115 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:58:16,116 INFO L82 PathProgramCache]: Analyzing trace with hash 295644586, now seen corresponding path program 1 times [2018-09-10 11:58:16,116 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:16,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:16,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:16,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:16,117 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 135 proven. 150 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-09-10 11:58:16,385 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:58:16,385 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:58:17,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:17,590 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:58:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:17,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:58:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-09-10 11:58:17,831 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:58:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 135 proven. 150 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-09-10 11:58:18,071 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:58:18,071 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2018-09-10 11:58:18,071 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:18,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:58:18,072 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:58:18,072 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:58:18,072 INFO L87 Difference]: Start difference. First operand 173409 states and 214622 transitions. Second operand 5 states. [2018-09-10 11:58:38,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:58:38,694 INFO L93 Difference]: Finished difference Result 378219 states and 465418 transitions. [2018-09-10 11:58:38,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:58:38,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2018-09-10 11:58:38,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:58:39,262 INFO L225 Difference]: With dead ends: 378219 [2018-09-10 11:58:39,262 INFO L226 Difference]: Without dead ends: 192139 [2018-09-10 11:58:39,523 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 663 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:58:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192139 states. [2018-09-10 11:58:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192139 to 191238. [2018-09-10 11:58:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191238 states. [2018-09-10 11:58:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191238 states to 191238 states and 233613 transitions. [2018-09-10 11:58:43,182 INFO L78 Accepts]: Start accepts. Automaton has 191238 states and 233613 transitions. Word has length 333 [2018-09-10 11:58:43,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:58:43,183 INFO L480 AbstractCegarLoop]: Abstraction has 191238 states and 233613 transitions. [2018-09-10 11:58:43,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:58:43,183 INFO L276 IsEmpty]: Start isEmpty. Operand 191238 states and 233613 transitions. [2018-09-10 11:58:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-09-10 11:58:44,830 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:58:44,830 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2018-09-10 11:58:44,831 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:58:44,831 INFO L82 PathProgramCache]: Analyzing trace with hash 170995815, now seen corresponding path program 1 times [2018-09-10 11:58:44,831 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:58:44,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:44,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:44,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:58:44,832 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:58:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 282 proven. 155 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2018-09-10 11:58:45,508 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:58:45,508 INFO L197 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 [2018-09-10 11:58:45,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:58:45,521 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:58:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:58:45,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:58:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 348 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2018-09-10 11:58:45,928 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:58:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2018-09-10 11:58:46,088 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:58:46,088 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 8 [2018-09-10 11:58:46,088 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:58:46,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:58:46,089 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:58:46,089 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:58:46,089 INFO L87 Difference]: Start difference. First operand 191238 states and 233613 transitions. Second operand 3 states. Received shutdown request... [2018-09-10 11:58:48,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:58:48,538 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:58:48,543 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:58:48,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:58:48 BoogieIcfgContainer [2018-09-10 11:58:48,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:58:48,544 INFO L168 Benchmark]: Toolchain (without parser) took 228235.48 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -117.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-10 11:58:48,545 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:58:48,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2852.36 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: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:58:48,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 345.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-10 11:58:48,547 INFO L168 Benchmark]: Boogie Preprocessor took 1256.99 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 986.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:58:48,550 INFO L168 Benchmark]: RCFGBuilder took 13981.37 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 153.6 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 97.2 MB). Peak memory consumption was 742.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:58:48,551 INFO L168 Benchmark]: TraceAbstraction took 209789.51 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 774.9 MB). Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 703.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-10 11:58:48,556 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2852.36 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: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 345.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1256.99 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 986.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13981.37 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 153.6 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 97.2 MB). Peak memory consumption was 742.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209789.51 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 774.9 MB). Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 703.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 147). Cancelled while BasicCegarLoop was constructing difference of abstraction (191238states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (12067 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 209.7s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 180.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7333 SDtfs, 35547 SDslu, 5380 SDs, 0 SdLazy, 69323 SolverSat, 14159 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 145.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4092 GetRequests, 3992 SyntacticMatches, 15 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191238occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 4622 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 4540 NumberOfCodeBlocks, 4540 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 6516 ConstructedInterpolants, 0 QuantifiedInterpolants, 4963244 SizeOfPredicates, 7 NumberOfNonLiveVariables, 3731 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 26 InterpolantComputations, 12 PerfectInterpolantSequences, 5069/6137 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_label27_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-58-48-570.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label27_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-58-48-570.csv Completed graceful shutdown