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/Problem18_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:32:26,383 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:32:26,385 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:32:26,397 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:32:26,397 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:32:26,398 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:32:26,399 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:32:26,401 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:32:26,402 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:32:26,403 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:32:26,404 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:32:26,404 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:32:26,405 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:32:26,406 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:32:26,407 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:32:26,408 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:32:26,409 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:32:26,410 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:32:26,412 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:32:26,414 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:32:26,415 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:32:26,416 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:32:26,418 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:32:26,418 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:32:26,419 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:32:26,419 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:32:26,420 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:32:26,421 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:32:26,422 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:32:26,423 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:32:26,423 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:32:26,424 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:32:26,424 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:32:26,424 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:32:26,425 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:32:26,426 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:32:26,426 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 12:32:26,445 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:32:26,446 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:32:26,446 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:32:26,447 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:32:26,447 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:32:26,447 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:32:26,447 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:32:26,449 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:32:26,450 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:32:26,450 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:32:26,450 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:32:26,451 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:32:26,451 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:32:26,451 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:32:26,452 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:32:26,452 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:32:26,453 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:32:26,453 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:32:26,453 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:32:26,453 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:32:26,454 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:32:26,454 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:32:26,454 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:32:26,454 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:32:26,454 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:32:26,455 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:32:26,455 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:32:26,455 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:32:26,455 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:32:26,455 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:32:26,456 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:32:26,456 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:32:26,456 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:32:26,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:32:26,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:32:26,516 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:32:26,518 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:32:26,519 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:32:26,519 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label04_true-unreach-call.c [2018-09-10 12:32:26,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48eaae918/e4874a3cf84942f0a66b4b6e40ddd35a/FLAG44bd4e428 [2018-09-10 12:32:27,279 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:32:27,279 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label04_true-unreach-call.c [2018-09-10 12:32:27,305 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48eaae918/e4874a3cf84942f0a66b4b6e40ddd35a/FLAG44bd4e428 [2018-09-10 12:32:27,321 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48eaae918/e4874a3cf84942f0a66b4b6e40ddd35a [2018-09-10 12:32:27,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:32:27,335 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:32:27,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:32:27,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:32:27,345 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:32:27,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:32:27" (1/1) ... [2018-09-10 12:32:27,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112f5a3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:27, skipping insertion in model container [2018-09-10 12:32:27,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:32:27" (1/1) ... [2018-09-10 12:32:27,716 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:32:28,563 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:32:28,584 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:32:29,375 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:32:29,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:29 WrapperNode [2018-09-10 12:32:29,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:32:29,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:32:29,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:32:29,542 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:32:29,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:29" (1/1) ... [2018-09-10 12:32:29,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:29" (1/1) ... [2018-09-10 12:32:29,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:32:29,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:32:29,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:32:29,749 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:32:30,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:29" (1/1) ... [2018-09-10 12:32:30,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:29" (1/1) ... [2018-09-10 12:32:30,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:29" (1/1) ... [2018-09-10 12:32:30,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:29" (1/1) ... [2018-09-10 12:32:30,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:29" (1/1) ... [2018-09-10 12:32:30,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:29" (1/1) ... [2018-09-10 12:32:30,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:29" (1/1) ... [2018-09-10 12:32:30,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:32:30,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:32:30,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:32:30,376 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:32:30,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:29" (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 12:32:30,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:32:30,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:32:30,452 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 12:32:30,453 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 12:32:30,453 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 12:32:30,453 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 12:32:30,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:32:30,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:32:30,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:32:30,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:32:30,454 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 12:32:30,454 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 12:32:38,194 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:32:38,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:32:38 BoogieIcfgContainer [2018-09-10 12:32:38,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:32:38,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:32:38,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:32:38,201 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:32:38,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:32:27" (1/3) ... [2018-09-10 12:32:38,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f80ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:32:38, skipping insertion in model container [2018-09-10 12:32:38,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:32:29" (2/3) ... [2018-09-10 12:32:38,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f80ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:32:38, skipping insertion in model container [2018-09-10 12:32:38,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:32:38" (3/3) ... [2018-09-10 12:32:38,205 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label04_true-unreach-call.c [2018-09-10 12:32:38,214 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:32:38,222 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:32:38,286 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:32:38,287 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:32:38,287 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:32:38,287 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:32:38,287 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:32:38,287 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:32:38,288 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:32:38,288 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:32:38,288 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:32:38,327 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-10 12:32:38,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-10 12:32:38,338 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:38,340 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:38,341 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 12:32:38,351 INFO L82 PathProgramCache]: Analyzing trace with hash -268137023, now seen corresponding path program 1 times [2018-09-10 12:32:38,354 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:38,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:38,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:38,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:38,406 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:38,858 WARN L175 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:32:38,935 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 12:32:38,937 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:32:38,938 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:32:38,938 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:38,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:32:38,960 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:32:38,961 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:32:38,963 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-10 12:32:45,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:45,608 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-10 12:32:45,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:32:45,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-09-10 12:32:45,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:45,659 INFO L225 Difference]: With dead ends: 2251 [2018-09-10 12:32:45,660 INFO L226 Difference]: Without dead ends: 1474 [2018-09-10 12:32:45,676 INFO L604 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 [2018-09-10 12:32:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-10 12:32:45,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-10 12:32:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-10 12:32:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-09-10 12:32:45,869 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 59 [2018-09-10 12:32:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:45,870 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-09-10 12:32:45,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:32:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-09-10 12:32:45,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-10 12:32:45,879 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:45,879 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:32:45,880 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 12:32:45,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1237897426, now seen corresponding path program 1 times [2018-09-10 12:32:45,880 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:45,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:45,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:45,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:45,882 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:46,215 WARN L175 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:32:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:46,445 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:32:46,446 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:32:46,446 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:46,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:32:46,448 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:32:46,449 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:32:46,449 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-09-10 12:32:55,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:55,154 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-09-10 12:32:55,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:32:55,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-09-10 12:32:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:55,185 INFO L225 Difference]: With dead ends: 4419 [2018-09-10 12:32:55,185 INFO L226 Difference]: Without dead ends: 2951 [2018-09-10 12:32:55,190 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:32:55,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-09-10 12:32:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-09-10 12:32:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-09-10 12:32:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-09-10 12:32:55,299 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 129 [2018-09-10 12:32:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:55,302 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-09-10 12:32:55,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:32:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-09-10 12:32:55,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-10 12:32:55,308 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:55,311 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:32:55,312 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 12:32:55,312 INFO L82 PathProgramCache]: Analyzing trace with hash 776493837, now seen corresponding path program 1 times [2018-09-10 12:32:55,312 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:55,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:55,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:55,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:55,314 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:55,613 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:32:55,613 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:32:55,613 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:55,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:32:55,614 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:32:55,614 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:32:55,614 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 6 states. [2018-09-10 12:33:08,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:08,493 INFO L93 Difference]: Finished difference Result 11941 states and 22535 transitions. [2018-09-10 12:33:08,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 12:33:08,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-09-10 12:33:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:08,569 INFO L225 Difference]: With dead ends: 11941 [2018-09-10 12:33:08,569 INFO L226 Difference]: Without dead ends: 9022 [2018-09-10 12:33:08,602 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:33:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9022 states. [2018-09-10 12:33:08,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9022 to 8934. [2018-09-10 12:33:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8934 states. [2018-09-10 12:33:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8934 states to 8934 states and 13433 transitions. [2018-09-10 12:33:08,923 INFO L78 Accepts]: Start accepts. Automaton has 8934 states and 13433 transitions. Word has length 130 [2018-09-10 12:33:08,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:08,924 INFO L480 AbstractCegarLoop]: Abstraction has 8934 states and 13433 transitions. [2018-09-10 12:33:08,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:33:08,924 INFO L276 IsEmpty]: Start isEmpty. Operand 8934 states and 13433 transitions. [2018-09-10 12:33:08,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-09-10 12:33:08,933 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:08,933 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:33:08,933 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 12:33:08,934 INFO L82 PathProgramCache]: Analyzing trace with hash -449360870, now seen corresponding path program 1 times [2018-09-10 12:33:08,934 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:08,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:08,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:08,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:08,939 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:09,810 WARN L175 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-09-10 12:33:10,012 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:33:10,012 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:33:10,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-10 12:33:10,012 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:33:10,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:33:10,013 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:33:10,013 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-09-10 12:33:10,014 INFO L87 Difference]: Start difference. First operand 8934 states and 13433 transitions. Second operand 9 states. [2018-09-10 12:33:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:20,088 INFO L93 Difference]: Finished difference Result 22512 states and 35380 transitions. [2018-09-10 12:33:20,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-10 12:33:20,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 197 [2018-09-10 12:33:20,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:20,166 INFO L225 Difference]: With dead ends: 22512 [2018-09-10 12:33:20,166 INFO L226 Difference]: Without dead ends: 13584 [2018-09-10 12:33:20,197 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:33:20,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13584 states. [2018-09-10 12:33:20,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13584 to 13425. [2018-09-10 12:33:20,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13425 states. [2018-09-10 12:33:20,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13425 states to 13425 states and 19272 transitions. [2018-09-10 12:33:20,595 INFO L78 Accepts]: Start accepts. Automaton has 13425 states and 19272 transitions. Word has length 197 [2018-09-10 12:33:20,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:20,596 INFO L480 AbstractCegarLoop]: Abstraction has 13425 states and 19272 transitions. [2018-09-10 12:33:20,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:33:20,596 INFO L276 IsEmpty]: Start isEmpty. Operand 13425 states and 19272 transitions. [2018-09-10 12:33:20,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-09-10 12:33:20,611 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:20,611 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, 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, 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] [2018-09-10 12:33:20,612 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 12:33:20,612 INFO L82 PathProgramCache]: Analyzing trace with hash -212759026, now seen corresponding path program 1 times [2018-09-10 12:33:20,612 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:20,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:20,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:20,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:20,614 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:20,971 WARN L175 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:33:21,500 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 99 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:33:21,501 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:21,501 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 12:33:21,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:21,517 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:21,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:33:21,900 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-10 12:33:22,430 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:33:22,431 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-09-10 12:33:22,431 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:33:22,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:33:22,433 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:33:22,433 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:33:22,433 INFO L87 Difference]: Start difference. First operand 13425 states and 19272 transitions. Second operand 3 states. [2018-09-10 12:33:27,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:27,829 INFO L93 Difference]: Finished difference Result 26844 states and 38592 transitions. [2018-09-10 12:33:27,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:33:27,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2018-09-10 12:33:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:27,894 INFO L225 Difference]: With dead ends: 26844 [2018-09-10 12:33:27,895 INFO L226 Difference]: Without dead ends: 13425 [2018-09-10 12:33:27,968 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 641 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:33:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13425 states. [2018-09-10 12:33:28,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13425 to 12710. [2018-09-10 12:33:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12710 states. [2018-09-10 12:33:28,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12710 states to 12710 states and 16332 transitions. [2018-09-10 12:33:28,338 INFO L78 Accepts]: Start accepts. Automaton has 12710 states and 16332 transitions. Word has length 320 [2018-09-10 12:33:28,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:28,339 INFO L480 AbstractCegarLoop]: Abstraction has 12710 states and 16332 transitions. [2018-09-10 12:33:28,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:33:28,339 INFO L276 IsEmpty]: Start isEmpty. Operand 12710 states and 16332 transitions. [2018-09-10 12:33:28,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-09-10 12:33:28,352 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:28,353 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:33:28,353 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 12:33:28,354 INFO L82 PathProgramCache]: Analyzing trace with hash -664547617, now seen corresponding path program 1 times [2018-09-10 12:33:28,354 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:28,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:28,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:28,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:28,355 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 233 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-10 12:33:28,965 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:28,965 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 12:33:28,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:28,981 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:29,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:29,544 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-10 12:33:29,544 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 233 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-10 12:33:30,274 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:30,274 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:33:30,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:30,293 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:30,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-10 12:33:30,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 233 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-10 12:33:31,191 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:33:31,192 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:33:31,192 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:33:31,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:33:31,193 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:33:31,196 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:33:31,196 INFO L87 Difference]: Start difference. First operand 12710 states and 16332 transitions. Second operand 9 states. [2018-09-10 12:33:44,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:44,858 INFO L93 Difference]: Finished difference Result 47872 states and 69854 transitions. [2018-09-10 12:33:44,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 12:33:44,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 326 [2018-09-10 12:33:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:45,036 INFO L225 Difference]: With dead ends: 47872 [2018-09-10 12:33:45,036 INFO L226 Difference]: Without dead ends: 31967 [2018-09-10 12:33:45,145 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1326 GetRequests, 1303 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:33:45,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31967 states. [2018-09-10 12:33:45,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31967 to 30932. [2018-09-10 12:33:45,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30932 states. [2018-09-10 12:33:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30932 states to 30932 states and 37982 transitions. [2018-09-10 12:33:45,990 INFO L78 Accepts]: Start accepts. Automaton has 30932 states and 37982 transitions. Word has length 326 [2018-09-10 12:33:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:45,991 INFO L480 AbstractCegarLoop]: Abstraction has 30932 states and 37982 transitions. [2018-09-10 12:33:45,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:33:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 30932 states and 37982 transitions. [2018-09-10 12:33:46,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-09-10 12:33:46,001 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:46,001 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 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 12:33:46,002 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 12:33:46,002 INFO L82 PathProgramCache]: Analyzing trace with hash -851857614, now seen corresponding path program 1 times [2018-09-10 12:33:46,002 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:46,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:46,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:46,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:46,003 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-09-10 12:33:46,342 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:33:46,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:33:46,342 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:33:46,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:33:46,343 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:33:46,343 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:33:46,344 INFO L87 Difference]: Start difference. First operand 30932 states and 37982 transitions. Second operand 4 states. [2018-09-10 12:33:53,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:53,810 INFO L93 Difference]: Finished difference Result 72525 states and 92799 transitions. [2018-09-10 12:33:53,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:33:53,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 359 [2018-09-10 12:33:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:53,964 INFO L225 Difference]: With dead ends: 72525 [2018-09-10 12:33:53,964 INFO L226 Difference]: Without dead ends: 41604 [2018-09-10 12:33:54,072 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 12:33:54,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41604 states. [2018-09-10 12:33:54,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41604 to 41595. [2018-09-10 12:33:54,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41595 states. [2018-09-10 12:33:54,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41595 states to 41595 states and 49159 transitions. [2018-09-10 12:33:54,857 INFO L78 Accepts]: Start accepts. Automaton has 41595 states and 49159 transitions. Word has length 359 [2018-09-10 12:33:54,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:54,858 INFO L480 AbstractCegarLoop]: Abstraction has 41595 states and 49159 transitions. [2018-09-10 12:33:54,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:33:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 41595 states and 49159 transitions. [2018-09-10 12:33:54,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-09-10 12:33:54,866 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:54,867 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:33:54,867 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 12:33:54,868 INFO L82 PathProgramCache]: Analyzing trace with hash 528317878, now seen corresponding path program 1 times [2018-09-10 12:33:54,868 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:54,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:54,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:54,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:54,869 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 333 proven. 2 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-09-10 12:33:55,285 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:55,285 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 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 [2018-09-10 12:33:55,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:55,300 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:55,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2018-09-10 12:33:55,782 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 156 proven. 185 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-09-10 12:33:56,451 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:33:56,451 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-10 12:33:56,451 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:33:56,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:33:56,452 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:33:56,452 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:33:56,453 INFO L87 Difference]: Start difference. First operand 41595 states and 49159 transitions. Second operand 5 states. [2018-09-10 12:34:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:34:02,723 INFO L93 Difference]: Finished difference Result 91122 states and 107378 transitions. [2018-09-10 12:34:02,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:34:02,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 377 [2018-09-10 12:34:02,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:34:02,911 INFO L225 Difference]: With dead ends: 91122 [2018-09-10 12:34:02,911 INFO L226 Difference]: Without dead ends: 50933 [2018-09-10 12:34:03,040 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 749 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:34:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50933 states. [2018-09-10 12:34:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50933 to 47994. [2018-09-10 12:34:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47994 states. [2018-09-10 12:34:03,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47994 states to 47994 states and 56042 transitions. [2018-09-10 12:34:03,958 INFO L78 Accepts]: Start accepts. Automaton has 47994 states and 56042 transitions. Word has length 377 [2018-09-10 12:34:03,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:34:03,959 INFO L480 AbstractCegarLoop]: Abstraction has 47994 states and 56042 transitions. [2018-09-10 12:34:03,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:34:03,959 INFO L276 IsEmpty]: Start isEmpty. Operand 47994 states and 56042 transitions. [2018-09-10 12:34:03,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2018-09-10 12:34:03,970 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:34:03,970 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:03,970 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 12:34:03,971 INFO L82 PathProgramCache]: Analyzing trace with hash 763929097, now seen corresponding path program 1 times [2018-09-10 12:34:03,971 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:34:03,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:34:03,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:34:03,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:34:03,972 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:34:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:34:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 95 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:34:04,855 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:34:04,855 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 12:34:05,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:34:05,264 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:34:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:34:05,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:34:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-10 12:34:05,653 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:34:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 104 proven. 93 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:34:06,353 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:34:06,353 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 6] total 17 [2018-09-10 12:34:06,354 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:34:06,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:34:06,354 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:34:06,354 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-09-10 12:34:06,355 INFO L87 Difference]: Start difference. First operand 47994 states and 56042 transitions. Second operand 5 states. [2018-09-10 12:34:14,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:34:14,270 INFO L93 Difference]: Finished difference Result 115682 states and 138579 transitions. [2018-09-10 12:34:14,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:34:14,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2018-09-10 12:34:14,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:34:14,490 INFO L225 Difference]: With dead ends: 115682 [2018-09-10 12:34:14,491 INFO L226 Difference]: Without dead ends: 68394 [2018-09-10 12:34:14,652 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 951 GetRequests, 924 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-09-10 12:34:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68394 states. [2018-09-10 12:34:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68394 to 67640. [2018-09-10 12:34:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67640 states. [2018-09-10 12:34:15,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67640 states to 67640 states and 78137 transitions. [2018-09-10 12:34:15,797 INFO L78 Accepts]: Start accepts. Automaton has 67640 states and 78137 transitions. Word has length 465 [2018-09-10 12:34:15,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:34:15,798 INFO L480 AbstractCegarLoop]: Abstraction has 67640 states and 78137 transitions. [2018-09-10 12:34:15,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:34:15,798 INFO L276 IsEmpty]: Start isEmpty. Operand 67640 states and 78137 transitions. [2018-09-10 12:34:15,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 994 [2018-09-10 12:34:15,814 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:34:15,815 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:34:15,815 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 12:34:15,816 INFO L82 PathProgramCache]: Analyzing trace with hash -97822178, now seen corresponding path program 1 times [2018-09-10 12:34:15,816 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:34:15,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:34:15,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:34:15,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:34:15,817 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:34:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:34:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 60 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:34:20,551 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:34:20,551 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 12:34:20,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:34:20,562 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:34:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:34:21,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:34:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-09-10 12:34:21,884 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:34:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-09-10 12:34:23,802 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:34:23,802 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:34:23,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:34:23,817 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:34:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:34:24,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:34:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-09-10 12:34:24,995 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:34:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 356 proven. 2 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-09-10 12:34:26,376 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:34:26,378 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 5, 5, 5, 5] total 36 [2018-09-10 12:34:26,378 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:34:26,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-10 12:34:26,380 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-10 12:34:26,380 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2018-09-10 12:34:26,381 INFO L87 Difference]: Start difference. First operand 67640 states and 78137 transitions. Second operand 29 states. [2018-09-10 12:34:36,821 WARN L175 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2018-09-10 12:34:38,528 WARN L175 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2018-09-10 12:34:39,834 WARN L175 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-09-10 12:34:41,028 WARN L175 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2018-09-10 12:34:41,355 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2018-09-10 12:34:42,189 WARN L175 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2018-09-10 12:34:42,466 WARN L175 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2018-09-10 12:34:44,775 WARN L175 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-09-10 12:34:46,238 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2018-09-10 12:34:46,828 WARN L175 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-09-10 12:34:48,791 WARN L175 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2018-09-10 12:34:50,377 WARN L175 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2018-09-10 12:34:50,595 WARN L175 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2018-09-10 12:34:52,672 WARN L175 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2018-09-10 12:34:53,098 WARN L175 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-09-10 12:34:53,280 WARN L175 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-09-10 12:34:54,644 WARN L175 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2018-09-10 12:34:54,884 WARN L175 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2018-09-10 12:34:55,353 WARN L175 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-09-10 12:34:56,084 WARN L175 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-09-10 12:34:56,517 WARN L175 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-09-10 12:34:58,867 WARN L175 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-09-10 12:34:59,527 WARN L175 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-09-10 12:35:02,235 WARN L175 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2018-09-10 12:35:03,679 WARN L175 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-09-10 12:35:04,053 WARN L175 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2018-09-10 12:35:05,315 WARN L175 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2018-09-10 12:35:05,830 WARN L175 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-09-10 12:35:06,331 WARN L175 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2018-09-10 12:35:07,378 WARN L175 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2018-09-10 12:35:08,363 WARN L175 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-09-10 12:35:13,637 WARN L175 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2018-09-10 12:35:14,310 WARN L175 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-09-10 12:35:14,666 WARN L175 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-09-10 12:35:20,901 WARN L175 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-09-10 12:35:21,159 WARN L175 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2018-09-10 12:35:21,433 WARN L175 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2018-09-10 12:35:21,642 WARN L175 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2018-09-10 12:35:23,526 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2018-09-10 12:35:24,039 WARN L175 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2018-09-10 12:35:27,005 WARN L175 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2018-09-10 12:35:28,166 WARN L175 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2018-09-10 12:35:39,064 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2018-09-10 12:35:41,779 WARN L175 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2018-09-10 12:35:42,044 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2018-09-10 12:35:45,801 WARN L175 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2018-09-10 12:35:47,292 WARN L175 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-09-10 12:35:50,327 WARN L175 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-09-10 12:35:53,065 WARN L175 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-09-10 12:35:57,649 WARN L175 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-09-10 12:36:00,522 WARN L175 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-09-10 12:36:03,888 WARN L175 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-09-10 12:36:14,079 WARN L175 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-09-10 12:36:15,061 WARN L175 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-09-10 12:36:16,526 WARN L175 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 Received shutdown request... [2018-09-10 12:36:22,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 341 states. [2018-09-10 12:36:22,723 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:36:22,728 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:36:22,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:36:22 BoogieIcfgContainer [2018-09-10 12:36:22,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:36:22,729 INFO L168 Benchmark]: Toolchain (without parser) took 235396.37 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -527.8 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-10 12:36:22,730 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:36:22,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2204.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 182.6 MB). Peak memory consumption was 182.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:36:22,731 INFO L168 Benchmark]: Boogie Procedure Inliner took 206.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:36:22,732 INFO L168 Benchmark]: Boogie Preprocessor took 626.65 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:36:22,732 INFO L168 Benchmark]: RCFGBuilder took 7821.21 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 542.4 MB). Peak memory consumption was 542.4 MB. Max. memory is 7.1 GB. [2018-09-10 12:36:22,733 INFO L168 Benchmark]: TraceAbstraction took 224530.65 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -224.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-10 12:36:22,739 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2204.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 182.6 MB). Peak memory consumption was 182.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 206.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 626.65 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7821.21 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 542.4 MB). Peak memory consumption was 542.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224530.65 ms. Allocated memory was 2.4 GB in the beginning and 4.0 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -224.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 165]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 165). Cancelled while BasicCegarLoop was constructing difference of abstraction (67640states) and FLOYD_HOARE automaton (currently 341 states, 29 states before enhancement), while ReachableStatesComputation was computing reachable states (175477 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 224.4s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 197.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2743 SDtfs, 59256 SDslu, 5222 SDs, 0 SdLazy, 115259 SolverSat, 18058 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 133.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8240 GetRequests, 7761 SyntacticMatches, 26 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59026 ImplicationChecksByTransitivity, 37.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67640occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 5725 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 7155 NumberOfCodeBlocks, 7155 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 10931 ConstructedInterpolants, 0 QuantifiedInterpolants, 32610835 SizeOfPredicates, 10 NumberOfNonLiveVariables, 5431 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 6979/8313 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/Problem18_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-36-22-752.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-36-22-752.csv Completed graceful shutdown