java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:23:07,167 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:23:07,170 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:23:07,188 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:23:07,188 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:23:07,189 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:23:07,191 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:23:07,192 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:23:07,194 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:23:07,195 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:23:07,196 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:23:07,196 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:23:07,197 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:23:07,198 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:23:07,199 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:23:07,200 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:23:07,201 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:23:07,203 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:23:07,205 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:23:07,206 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:23:07,207 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:23:07,209 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:23:07,211 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:23:07,211 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:23:07,211 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:23:07,212 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:23:07,215 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:23:07,216 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:23:07,218 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:23:07,219 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:23:07,219 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:23:07,223 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:23:07,223 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:23:07,223 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:23:07,224 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:23:07,226 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:23:07,226 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:23:07,251 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:23:07,251 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:23:07,252 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:23:07,253 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:23:07,253 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:23:07,253 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:23:07,253 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:23:07,253 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:23:07,254 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:23:07,254 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:23:07,254 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:23:07,255 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:23:07,255 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:23:07,255 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:23:07,256 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:23:07,256 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:23:07,257 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:23:07,257 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:23:07,257 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:23:07,258 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:23:07,258 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:23:07,259 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:23:07,259 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:23:07,259 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:23:07,259 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:23:07,259 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:23:07,260 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:23:07,260 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:23:07,260 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:23:07,260 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:23:07,260 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:23:07,261 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:23:07,261 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:23:07,321 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:23:07,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:23:07,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:23:07,350 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:23:07,350 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:23:07,351 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c [2018-07-24 14:23:07,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a15f2c461/85d81487587d4e3aa9cc6f92fe4fe02c/FLAG68746448e [2018-07-24 14:23:08,248 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:23:08,249 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label50_true-unreach-call.c [2018-07-24 14:23:08,300 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a15f2c461/85d81487587d4e3aa9cc6f92fe4fe02c/FLAG68746448e [2018-07-24 14:23:08,324 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a15f2c461/85d81487587d4e3aa9cc6f92fe4fe02c [2018-07-24 14:23:08,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:23:08,339 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:23:08,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:23:08,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:23:08,350 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:23:08,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:23:08" (1/1) ... [2018-07-24 14:23:08,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73387c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:08, skipping insertion in model container [2018-07-24 14:23:08,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:23:08" (1/1) ... [2018-07-24 14:23:08,773 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:23:10,003 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:23:10,022 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:23:10,783 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:23:11,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:11 WrapperNode [2018-07-24 14:23:11,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:23:11,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:23:11,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:23:11,180 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:23:11,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:11" (1/1) ... [2018-07-24 14:23:11,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:11" (1/1) ... [2018-07-24 14:23:11,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:23:11,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:23:11,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:23:11,496 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:23:12,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:11" (1/1) ... [2018-07-24 14:23:12,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:11" (1/1) ... [2018-07-24 14:23:12,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:11" (1/1) ... [2018-07-24 14:23:12,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:11" (1/1) ... [2018-07-24 14:23:12,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:11" (1/1) ... [2018-07-24 14:23:12,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:11" (1/1) ... [2018-07-24 14:23:12,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:11" (1/1) ... [2018-07-24 14:23:12,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:23:12,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:23:12,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:23:12,720 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:23:12,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:23:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:23:12,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:23:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:23:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:23:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:23:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 14:23:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:23:12,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:23:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:23:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 14:23:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:23:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:23:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:23:12,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:23:27,533 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:23:27,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:23:27 BoogieIcfgContainer [2018-07-24 14:23:27,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:23:27,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:23:27,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:23:27,538 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:23:27,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:23:08" (1/3) ... [2018-07-24 14:23:27,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d5ab6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:23:27, skipping insertion in model container [2018-07-24 14:23:27,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:23:11" (2/3) ... [2018-07-24 14:23:27,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d5ab6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:23:27, skipping insertion in model container [2018-07-24 14:23:27,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:23:27" (3/3) ... [2018-07-24 14:23:27,545 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label50_true-unreach-call.c [2018-07-24 14:23:27,556 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:23:27,566 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:23:27,631 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:23:27,631 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:23:27,632 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:23:27,632 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:23:27,632 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:23:27,632 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:23:27,632 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:23:27,632 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:23:27,632 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:23:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 14:23:27,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-24 14:23:27,700 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:27,701 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:23:27,701 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:27,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1189021641, now seen corresponding path program 1 times [2018-07-24 14:23:27,710 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:27,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:27,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:27,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:27,758 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:28,265 WARN L169 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:23:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:28,421 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:28,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:23:28,421 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:28,431 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:23:28,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:23:28,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:23:28,455 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-07-24 14:23:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:38,655 INFO L93 Difference]: Finished difference Result 3104 states and 5729 transitions. [2018-07-24 14:23:38,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:23:38,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-07-24 14:23:38,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:38,699 INFO L225 Difference]: With dead ends: 3104 [2018-07-24 14:23:38,699 INFO L226 Difference]: Without dead ends: 1982 [2018-07-24 14:23:38,710 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:23:38,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2018-07-24 14:23:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1965. [2018-07-24 14:23:38,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2018-07-24 14:23:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3515 transitions. [2018-07-24 14:23:38,882 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3515 transitions. Word has length 69 [2018-07-24 14:23:38,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:38,884 INFO L471 AbstractCegarLoop]: Abstraction has 1965 states and 3515 transitions. [2018-07-24 14:23:38,884 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:23:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3515 transitions. [2018-07-24 14:23:38,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-24 14:23:38,899 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:38,900 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:23:38,900 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:38,900 INFO L82 PathProgramCache]: Analyzing trace with hash -133867188, now seen corresponding path program 1 times [2018-07-24 14:23:38,901 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:38,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:38,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:38,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:38,903 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:39,355 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:39,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:23:39,355 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:39,357 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:23:39,357 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:23:39,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:23:39,358 INFO L87 Difference]: Start difference. First operand 1965 states and 3515 transitions. Second operand 6 states. [2018-07-24 14:23:56,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:23:56,889 INFO L93 Difference]: Finished difference Result 7217 states and 13326 transitions. [2018-07-24 14:23:56,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:23:56,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-07-24 14:23:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:23:56,922 INFO L225 Difference]: With dead ends: 7217 [2018-07-24 14:23:56,923 INFO L226 Difference]: Without dead ends: 5258 [2018-07-24 14:23:56,935 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:23:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5258 states. [2018-07-24 14:23:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5258 to 5228. [2018-07-24 14:23:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5228 states. [2018-07-24 14:23:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 8304 transitions. [2018-07-24 14:23:57,105 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 8304 transitions. Word has length 139 [2018-07-24 14:23:57,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:23:57,106 INFO L471 AbstractCegarLoop]: Abstraction has 5228 states and 8304 transitions. [2018-07-24 14:23:57,106 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:23:57,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 8304 transitions. [2018-07-24 14:23:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-24 14:23:57,111 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:23:57,111 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:23:57,112 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:23:57,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1174139738, now seen corresponding path program 1 times [2018-07-24 14:23:57,112 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:23:57,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:57,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:23:57,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:23:57,113 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:23:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:23:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:23:57,369 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:23:57,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 14:23:57,369 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:23:57,370 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 14:23:57,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 14:23:57,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:23:57,370 INFO L87 Difference]: Start difference. First operand 5228 states and 8304 transitions. Second operand 7 states. [2018-07-24 14:24:20,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:20,747 INFO L93 Difference]: Finished difference Result 18314 states and 31314 transitions. [2018-07-24 14:24:20,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:24:20,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2018-07-24 14:24:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:20,835 INFO L225 Difference]: With dead ends: 18314 [2018-07-24 14:24:20,836 INFO L226 Difference]: Without dead ends: 13092 [2018-07-24 14:24:20,864 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:24:20,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13092 states. [2018-07-24 14:24:21,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13092 to 12956. [2018-07-24 14:24:21,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12956 states. [2018-07-24 14:24:21,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12956 states to 12956 states and 19065 transitions. [2018-07-24 14:24:21,268 INFO L78 Accepts]: Start accepts. Automaton has 12956 states and 19065 transitions. Word has length 152 [2018-07-24 14:24:21,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:21,269 INFO L471 AbstractCegarLoop]: Abstraction has 12956 states and 19065 transitions. [2018-07-24 14:24:21,269 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 14:24:21,270 INFO L276 IsEmpty]: Start isEmpty. Operand 12956 states and 19065 transitions. [2018-07-24 14:24:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-24 14:24:21,282 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:21,283 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:24:21,283 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:21,283 INFO L82 PathProgramCache]: Analyzing trace with hash 2132393660, now seen corresponding path program 1 times [2018-07-24 14:24:21,283 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:21,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:21,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:21,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:21,285 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:21,617 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:24:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 124 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:24:21,935 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:21,935 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:24:21,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:21,946 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:22,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:24:22,224 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:24:22,600 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:24:22,600 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-07-24 14:24:22,601 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:22,601 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:24:22,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:24:22,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:24:22,602 INFO L87 Difference]: Start difference. First operand 12956 states and 19065 transitions. Second operand 3 states. [2018-07-24 14:24:32,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:32,251 INFO L93 Difference]: Finished difference Result 37441 states and 58377 transitions. [2018-07-24 14:24:32,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:24:32,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2018-07-24 14:24:32,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:32,409 INFO L225 Difference]: With dead ends: 37441 [2018-07-24 14:24:32,410 INFO L226 Difference]: Without dead ends: 24491 [2018-07-24 14:24:32,495 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 457 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:24:32,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24491 states. [2018-07-24 14:24:33,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24491 to 24440. [2018-07-24 14:24:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24440 states. [2018-07-24 14:24:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24440 states to 24440 states and 36490 transitions. [2018-07-24 14:24:33,142 INFO L78 Accepts]: Start accepts. Automaton has 24440 states and 36490 transitions. Word has length 229 [2018-07-24 14:24:33,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:33,143 INFO L471 AbstractCegarLoop]: Abstraction has 24440 states and 36490 transitions. [2018-07-24 14:24:33,143 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:24:33,143 INFO L276 IsEmpty]: Start isEmpty. Operand 24440 states and 36490 transitions. [2018-07-24 14:24:33,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-07-24 14:24:33,170 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:33,171 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:24:33,171 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:33,171 INFO L82 PathProgramCache]: Analyzing trace with hash -451305166, now seen corresponding path program 1 times [2018-07-24 14:24:33,171 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:33,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:33,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:33,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:33,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:33,459 WARN L169 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:24:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 124 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:24:33,880 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:33,880 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:24:33,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:33,897 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:34,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 14:24:34,472 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 124 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:24:34,768 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:24:34,769 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 14:24:34,769 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:34,769 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:24:34,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:24:34,770 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:24:34,770 INFO L87 Difference]: Start difference. First operand 24440 states and 36490 transitions. Second operand 5 states. [2018-07-24 14:24:52,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:52,626 INFO L93 Difference]: Finished difference Result 65745 states and 107529 transitions. [2018-07-24 14:24:52,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:24:52,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2018-07-24 14:24:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:52,849 INFO L225 Difference]: With dead ends: 65745 [2018-07-24 14:24:52,850 INFO L226 Difference]: Without dead ends: 41311 [2018-07-24 14:24:52,930 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 493 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:24:52,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41311 states. [2018-07-24 14:24:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41311 to 40818. [2018-07-24 14:24:54,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40818 states. [2018-07-24 14:24:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40818 states to 40818 states and 64034 transitions. [2018-07-24 14:24:54,306 INFO L78 Accepts]: Start accepts. Automaton has 40818 states and 64034 transitions. Word has length 249 [2018-07-24 14:24:54,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:54,306 INFO L471 AbstractCegarLoop]: Abstraction has 40818 states and 64034 transitions. [2018-07-24 14:24:54,306 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:24:54,306 INFO L276 IsEmpty]: Start isEmpty. Operand 40818 states and 64034 transitions. [2018-07-24 14:24:54,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-07-24 14:24:54,352 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:54,352 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:24:54,353 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:54,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1564750421, now seen corresponding path program 1 times [2018-07-24 14:24:54,353 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:54,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:54,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:54,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:54,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 124 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:24:54,741 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:24:54,741 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:24:54,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:54,755 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:24:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:54,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:24:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-07-24 14:24:55,363 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:24:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 124 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:24:55,853 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:24:55,853 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-07-24 14:24:55,853 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:55,854 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:24:55,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:24:55,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-07-24 14:24:55,855 INFO L87 Difference]: Start difference. First operand 40818 states and 64034 transitions. Second operand 5 states. [2018-07-24 14:25:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:12,955 INFO L93 Difference]: Finished difference Result 100067 states and 173909 transitions. [2018-07-24 14:25:12,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:25:12,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2018-07-24 14:25:12,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:13,262 INFO L225 Difference]: With dead ends: 100067 [2018-07-24 14:25:13,263 INFO L226 Difference]: Without dead ends: 59255 [2018-07-24 14:25:13,394 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 524 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:25:13,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59255 states. [2018-07-24 14:25:14,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59255 to 58836. [2018-07-24 14:25:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58836 states. [2018-07-24 14:25:14,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58836 states to 58836 states and 98395 transitions. [2018-07-24 14:25:14,761 INFO L78 Accepts]: Start accepts. Automaton has 58836 states and 98395 transitions. Word has length 264 [2018-07-24 14:25:14,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:14,762 INFO L471 AbstractCegarLoop]: Abstraction has 58836 states and 98395 transitions. [2018-07-24 14:25:14,762 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:25:14,762 INFO L276 IsEmpty]: Start isEmpty. Operand 58836 states and 98395 transitions. [2018-07-24 14:25:15,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-07-24 14:25:15,414 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:15,415 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:25:15,415 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:25:15,416 INFO L82 PathProgramCache]: Analyzing trace with hash -36490571, now seen corresponding path program 1 times [2018-07-24 14:25:15,416 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:15,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:15,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:15,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:15,417 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:15,814 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:25:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:25:15,914 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:25:15,914 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:25:15,914 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:25:15,915 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:25:15,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:25:15,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:25:15,915 INFO L87 Difference]: Start difference. First operand 58836 states and 98395 transitions. Second operand 6 states. [2018-07-24 14:25:27,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:27,423 INFO L93 Difference]: Finished difference Result 130184 states and 247899 transitions. [2018-07-24 14:25:27,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:25:27,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 305 [2018-07-24 14:25:27,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:27,788 INFO L225 Difference]: With dead ends: 130184 [2018-07-24 14:25:27,788 INFO L226 Difference]: Without dead ends: 71354 [2018-07-24 14:25:27,914 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:25:27,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71354 states. [2018-07-24 14:25:29,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71354 to 70628. [2018-07-24 14:25:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70628 states. [2018-07-24 14:25:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70628 states to 70628 states and 118496 transitions. [2018-07-24 14:25:29,726 INFO L78 Accepts]: Start accepts. Automaton has 70628 states and 118496 transitions. Word has length 305 [2018-07-24 14:25:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:29,727 INFO L471 AbstractCegarLoop]: Abstraction has 70628 states and 118496 transitions. [2018-07-24 14:25:29,727 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:25:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 70628 states and 118496 transitions. [2018-07-24 14:25:29,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-07-24 14:25:29,773 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:29,774 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:25:29,774 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:25:29,774 INFO L82 PathProgramCache]: Analyzing trace with hash 98709006, now seen corresponding path program 1 times [2018-07-24 14:25:29,774 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:29,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:29,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:29,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:29,776 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:30,131 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-07-24 14:25:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-07-24 14:25:30,192 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:25:30,192 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:25:30,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:30,203 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:25:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:30,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:25:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-07-24 14:25:30,534 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:25:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-07-24 14:25:30,971 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:25:30,971 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [3] total 5 [2018-07-24 14:25:30,971 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:25:30,972 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:25:30,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:25:30,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:25:30,974 INFO L87 Difference]: Start difference. First operand 70628 states and 118496 transitions. Second operand 3 states. [2018-07-24 14:25:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:38,997 INFO L93 Difference]: Finished difference Result 134726 states and 226536 transitions. [2018-07-24 14:25:38,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:25:38,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2018-07-24 14:25:38,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:39,264 INFO L225 Difference]: With dead ends: 134726 [2018-07-24 14:25:39,264 INFO L226 Difference]: Without dead ends: 69739 [2018-07-24 14:25:39,392 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:25:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69739 states. [2018-07-24 14:25:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69739 to 69735. [2018-07-24 14:25:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69735 states. [2018-07-24 14:25:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69735 states to 69735 states and 115412 transitions. [2018-07-24 14:25:40,881 INFO L78 Accepts]: Start accepts. Automaton has 69735 states and 115412 transitions. Word has length 327 [2018-07-24 14:25:40,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:40,882 INFO L471 AbstractCegarLoop]: Abstraction has 69735 states and 115412 transitions. [2018-07-24 14:25:40,882 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:25:40,882 INFO L276 IsEmpty]: Start isEmpty. Operand 69735 states and 115412 transitions. [2018-07-24 14:25:40,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-07-24 14:25:40,916 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:40,917 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-24 14:25:40,917 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:25:40,917 INFO L82 PathProgramCache]: Analyzing trace with hash 910010093, now seen corresponding path program 1 times [2018-07-24 14:25:40,918 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:40,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:40,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:40,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:40,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:41,230 WARN L169 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:25:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 186 proven. 140 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 14:25:41,398 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:25:41,398 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:25:41,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:41,415 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:25:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:41,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:25:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:25:43,336 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:25:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 186 proven. 140 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 14:25:43,742 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:25:43,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 14:25:43,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:25:43,743 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:25:43,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:25:43,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:25:43,744 INFO L87 Difference]: Start difference. First operand 69735 states and 115412 transitions. Second operand 5 states. [2018-07-24 14:26:00,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:26:00,927 INFO L93 Difference]: Finished difference Result 183160 states and 332787 transitions. [2018-07-24 14:26:00,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:26:00,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2018-07-24 14:26:00,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:26:01,450 INFO L225 Difference]: With dead ends: 183160 [2018-07-24 14:26:01,450 INFO L226 Difference]: Without dead ends: 113431 [2018-07-24 14:26:01,637 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 677 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:26:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113431 states. [2018-07-24 14:26:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113431 to 113021. [2018-07-24 14:26:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113021 states. [2018-07-24 14:26:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113021 states to 113021 states and 187766 transitions. [2018-07-24 14:26:05,173 INFO L78 Accepts]: Start accepts. Automaton has 113021 states and 187766 transitions. Word has length 341 [2018-07-24 14:26:05,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:26:05,173 INFO L471 AbstractCegarLoop]: Abstraction has 113021 states and 187766 transitions. [2018-07-24 14:26:05,173 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:26:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 113021 states and 187766 transitions. [2018-07-24 14:26:05,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-07-24 14:26:05,215 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:26:05,215 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:26:05,215 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:26:05,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1490674680, now seen corresponding path program 1 times [2018-07-24 14:26:05,216 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:26:05,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:26:05,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:26:05,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:26:05,217 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:26:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:26:05,566 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:26:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:26:06,041 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:26:06,041 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:26:06,041 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:26:06,041 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:26:06,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:26:06,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:26:06,042 INFO L87 Difference]: Start difference. First operand 113021 states and 187766 transitions. Second operand 6 states. [2018-07-24 14:26:21,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:26:21,677 INFO L93 Difference]: Finished difference Result 273477 states and 515072 transitions. [2018-07-24 14:26:21,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:26:21,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 343 [2018-07-24 14:26:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:26:22,389 INFO L225 Difference]: With dead ends: 273477 [2018-07-24 14:26:22,389 INFO L226 Difference]: Without dead ends: 161266 [2018-07-24 14:26:22,611 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:26:22,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161266 states. [2018-07-24 14:26:26,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161266 to 160609. [2018-07-24 14:26:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160609 states. [2018-07-24 14:26:34,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160609 states to 160609 states and 262840 transitions. [2018-07-24 14:26:34,250 INFO L78 Accepts]: Start accepts. Automaton has 160609 states and 262840 transitions. Word has length 343 [2018-07-24 14:26:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:26:34,251 INFO L471 AbstractCegarLoop]: Abstraction has 160609 states and 262840 transitions. [2018-07-24 14:26:34,251 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:26:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 160609 states and 262840 transitions. [2018-07-24 14:26:34,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-07-24 14:26:34,282 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:26:34,282 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-24 14:26:34,282 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:26:34,283 INFO L82 PathProgramCache]: Analyzing trace with hash 86998417, now seen corresponding path program 1 times [2018-07-24 14:26:34,283 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:26:34,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:26:34,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:26:34,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:26:34,284 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:26:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:26:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 186 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 14:26:34,517 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:26:34,517 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 14:26:34,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:26:34,525 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:26:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:26:34,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:26:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-07-24 14:26:34,764 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:26:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 186 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 14:26:35,039 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:26:35,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 14:26:35,040 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:26:35,041 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:26:35,041 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:26:35,041 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:26:35,041 INFO L87 Difference]: Start difference. First operand 160609 states and 262840 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 14:26:50,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:26:50,667 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:26:50,673 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:26:50,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:26:50 BoogieIcfgContainer [2018-07-24 14:26:50,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:26:50,675 INFO L168 Benchmark]: Toolchain (without parser) took 222337.30 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-24 14:26:50,676 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-07-24 14:26:50,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2838.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:26:50,677 INFO L168 Benchmark]: Boogie Procedure Inliner took 315.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.0 GB in the beginning and 997.1 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:26:50,681 INFO L168 Benchmark]: Boogie Preprocessor took 1224.85 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 976.7 MB). Free memory was 997.1 MB 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. [2018-07-24 14:26:50,681 INFO L168 Benchmark]: RCFGBuilder took 14813.98 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 166.2 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 66.1 MB). Peak memory consumption was 751.9 MB. Max. memory is 7.1 GB. [2018-07-24 14:26:50,682 INFO L168 Benchmark]: TraceAbstraction took 203139.12 ms. Allocated memory was 2.7 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -628.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-24 14:26:50,687 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2838.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 348.8 MB). Peak memory consumption was 348.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 315.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.0 GB in the beginning and 997.1 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1224.85 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 976.7 MB). Free memory was 997.1 MB 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 14813.98 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 166.2 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 66.1 MB). Peak memory consumption was 751.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203139.12 ms. Allocated memory was 2.7 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -628.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 198]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 198). Cancelled while BasicCegarLoop was constructing difference of abstraction (160609states) and interpolant automaton (currently 8 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (380133 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 203.0s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 167.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5683 SDtfs, 35591 SDslu, 4964 SDs, 0 SdLazy, 62614 SolverSat, 13561 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 133.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3601 GetRequests, 3504 SyntacticMatches, 12 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=160609occurred in iteration=10, 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: 22.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 2943 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 4522 NumberOfCodeBlocks, 4522 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6256 ConstructedInterpolants, 0 QuantifiedInterpolants, 4253864 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3170 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 23 InterpolantComputations, 13 PerfectInterpolantSequences, 4443/5417 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_label50_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-26-50-705.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label50_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-26-50-705.csv Completed graceful shutdown