java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 13:03:34,306 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 13:03:34,308 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 13:03:34,323 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 13:03:34,324 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 13:03:34,325 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 13:03:34,326 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 13:03:34,328 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 13:03:34,329 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 13:03:34,330 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 13:03:34,331 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 13:03:34,332 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 13:03:34,332 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 13:03:34,333 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 13:03:34,335 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 13:03:34,336 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 13:03:34,337 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 13:03:34,342 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 13:03:34,346 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 13:03:34,351 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 13:03:34,352 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 13:03:34,356 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 13:03:34,360 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 13:03:34,361 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 13:03:34,361 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 13:03:34,362 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 13:03:34,363 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 13:03:34,367 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 13:03:34,368 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 13:03:34,371 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 13:03:34,372 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 13:03:34,372 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 13:03:34,373 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 13:03:34,373 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 13:03:34,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 13:03:34,375 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 13:03:34,376 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 13:03:34,403 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 13:03:34,403 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 13:03:34,404 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 13:03:34,407 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 13:03:34,408 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 13:03:34,408 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 13:03:34,408 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 13:03:34,408 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 13:03:34,408 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 13:03:34,409 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 13:03:34,409 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 13:03:34,409 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 13:03:34,410 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 13:03:34,410 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 13:03:34,410 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 13:03:34,410 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 13:03:34,410 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 13:03:34,411 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 13:03:34,411 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 13:03:34,411 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 13:03:34,411 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 13:03:34,411 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 13:03:34,412 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 13:03:34,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:03:34,412 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 13:03:34,414 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 13:03:34,415 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 13:03:34,415 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 13:03:34,415 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 13:03:34,415 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 13:03:34,415 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 13:03:34,415 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 13:03:34,416 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 13:03:34,478 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 13:03:34,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 13:03:34,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 13:03:34,502 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 13:03:34,502 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 13:03:34,503 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label48_true-unreach-call.c [2018-07-24 13:03:34,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05cfee654/7b574d6d48fd481697dad1397e149ea4/FLAGe29f3f7b0 [2018-07-24 13:03:35,540 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 13:03:35,541 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label48_true-unreach-call.c [2018-07-24 13:03:35,591 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05cfee654/7b574d6d48fd481697dad1397e149ea4/FLAGe29f3f7b0 [2018-07-24 13:03:35,616 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05cfee654/7b574d6d48fd481697dad1397e149ea4 [2018-07-24 13:03:35,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 13:03:35,632 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 13:03:35,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 13:03:35,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 13:03:35,641 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 13:03:35,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:03:35" (1/1) ... [2018-07-24 13:03:35,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30934b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:35, skipping insertion in model container [2018-07-24 13:03:35,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:03:35" (1/1) ... [2018-07-24 13:03:36,009 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 13:03:37,296 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:03:37,313 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 13:03:38,007 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 13:03:38,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:38 WrapperNode [2018-07-24 13:03:38,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 13:03:38,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 13:03:38,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 13:03:38,187 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 13:03:38,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:38" (1/1) ... [2018-07-24 13:03:38,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:38" (1/1) ... [2018-07-24 13:03:38,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 13:03:38,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 13:03:38,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 13:03:38,324 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 13:03:38,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:38" (1/1) ... [2018-07-24 13:03:38,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:38" (1/1) ... [2018-07-24 13:03:38,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:38" (1/1) ... [2018-07-24 13:03:38,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:38" (1/1) ... [2018-07-24 13:03:38,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:38" (1/1) ... [2018-07-24 13:03:38,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:38" (1/1) ... [2018-07-24 13:03:38,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:38" (1/1) ... [2018-07-24 13:03:38,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 13:03:38,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 13:03:38,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 13:03:38,965 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 13:03:38,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 13:03:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 13:03:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 13:03:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 13:03:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 13:03:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 13:03:39,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-24 13:03:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 13:03:39,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 13:03:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 13:03:39,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-24 13:03:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 13:03:39,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 13:03:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 13:03:39,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 13:03:50,320 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 13:03:50,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:03:50 BoogieIcfgContainer [2018-07-24 13:03:50,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 13:03:50,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 13:03:50,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 13:03:50,325 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 13:03:50,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 01:03:35" (1/3) ... [2018-07-24 13:03:50,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c114175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:03:50, skipping insertion in model container [2018-07-24 13:03:50,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:03:38" (2/3) ... [2018-07-24 13:03:50,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c114175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:03:50, skipping insertion in model container [2018-07-24 13:03:50,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:03:50" (3/3) ... [2018-07-24 13:03:50,329 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label48_true-unreach-call.c [2018-07-24 13:03:50,339 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 13:03:50,350 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 13:03:50,425 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 13:03:50,426 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 13:03:50,426 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 13:03:50,426 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 13:03:50,427 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 13:03:50,427 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 13:03:50,427 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 13:03:50,427 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 13:03:50,427 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 13:03:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-07-24 13:03:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2018-07-24 13:03:50,529 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:03:50,531 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:03:50,533 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:03:50,539 INFO L82 PathProgramCache]: Analyzing trace with hash 682189020, now seen corresponding path program 1 times [2018-07-24 13:03:50,542 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:03:50,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:03:50,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:03:50,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:03:50,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:03:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:03:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:03:52,999 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:03:53,000 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 13:03:53,000 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:03:53,008 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:03:53,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:03:53,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:03:53,023 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-07-24 13:04:00,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:04:00,209 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-07-24 13:04:00,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:04:00,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 819 [2018-07-24 13:04:00,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:04:00,258 INFO L225 Difference]: With dead ends: 2647 [2018-07-24 13:04:00,258 INFO L226 Difference]: Without dead ends: 1738 [2018-07-24 13:04:00,270 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 13:04:00,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-07-24 13:04:00,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-07-24 13:04:00,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-07-24 13:04:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3169 transitions. [2018-07-24 13:04:00,433 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3169 transitions. Word has length 819 [2018-07-24 13:04:00,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:04:00,436 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 3169 transitions. [2018-07-24 13:04:00,436 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:04:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3169 transitions. [2018-07-24 13:04:00,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2018-07-24 13:04:00,484 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:04:00,485 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:04:00,485 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:04:00,488 INFO L82 PathProgramCache]: Analyzing trace with hash 101417817, now seen corresponding path program 1 times [2018-07-24 13:04:00,488 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:04:00,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:00,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:00,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:00,490 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:04:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:01,596 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 13:04:01,833 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 13:04:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:02,530 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:04:02,530 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:04:02,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:02,540 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:04:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:02,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:04:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:04,158 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:04:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:05,197 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 13:04:05,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 13:04:05,198 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:04:05,206 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 13:04:05,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 13:04:05,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-24 13:04:05,207 INFO L87 Difference]: Start difference. First operand 1738 states and 3169 transitions. Second operand 3 states. [2018-07-24 13:04:11,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:04:11,525 INFO L93 Difference]: Finished difference Result 5140 states and 9490 transitions. [2018-07-24 13:04:11,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 13:04:11,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 839 [2018-07-24 13:04:11,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:04:11,550 INFO L225 Difference]: With dead ends: 5140 [2018-07-24 13:04:11,551 INFO L226 Difference]: Without dead ends: 3408 [2018-07-24 13:04:11,558 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1691 GetRequests, 1678 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-07-24 13:04:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2018-07-24 13:04:11,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3408. [2018-07-24 13:04:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2018-07-24 13:04:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 5907 transitions. [2018-07-24 13:04:11,658 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 5907 transitions. Word has length 839 [2018-07-24 13:04:11,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:04:11,660 INFO L471 AbstractCegarLoop]: Abstraction has 3408 states and 5907 transitions. [2018-07-24 13:04:11,661 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 13:04:11,661 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 5907 transitions. [2018-07-24 13:04:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 842 [2018-07-24 13:04:11,692 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:04:11,693 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:04:11,693 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:04:11,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1017956771, now seen corresponding path program 1 times [2018-07-24 13:04:11,694 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:04:11,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:11,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:11,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:11,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:04:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:12,038 WARN L169 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-07-24 13:04:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:12,692 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 13:04:12,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 13:04:12,692 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:04:12,694 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 13:04:12,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 13:04:12,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 13:04:12,695 INFO L87 Difference]: Start difference. First operand 3408 states and 5907 transitions. Second operand 7 states. [2018-07-24 13:04:23,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:04:23,297 INFO L93 Difference]: Finished difference Result 8740 states and 15234 transitions. [2018-07-24 13:04:23,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 13:04:23,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 841 [2018-07-24 13:04:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:04:23,332 INFO L225 Difference]: With dead ends: 8740 [2018-07-24 13:04:23,332 INFO L226 Difference]: Without dead ends: 5338 [2018-07-24 13:04:23,343 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-07-24 13:04:23,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5338 states. [2018-07-24 13:04:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5338 to 5223. [2018-07-24 13:04:23,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5223 states. [2018-07-24 13:04:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 8604 transitions. [2018-07-24 13:04:23,491 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 8604 transitions. Word has length 841 [2018-07-24 13:04:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:04:23,491 INFO L471 AbstractCegarLoop]: Abstraction has 5223 states and 8604 transitions. [2018-07-24 13:04:23,491 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 13:04:23,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 8604 transitions. [2018-07-24 13:04:23,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 858 [2018-07-24 13:04:23,516 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:04:23,517 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:04:23,517 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:04:23,517 INFO L82 PathProgramCache]: Analyzing trace with hash 634785060, now seen corresponding path program 1 times [2018-07-24 13:04:23,518 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:04:23,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:23,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:23,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:23,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:04:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:24,010 WARN L169 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2018-07-24 13:04:24,330 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 13:04:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:25,246 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:04:25,246 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:04:25,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:25,259 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:04:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:25,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:04:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:26,463 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:04:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:26,974 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:04:26,974 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:04:26,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:26,997 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:04:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:27,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:04:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:28,650 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:04:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 13:04:29,273 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:04:29,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 16 [2018-07-24 13:04:29,274 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:04:29,276 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 13:04:29,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 13:04:29,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-07-24 13:04:29,277 INFO L87 Difference]: Start difference. First operand 5223 states and 8604 transitions. Second operand 10 states. [2018-07-24 13:04:39,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:04:39,802 INFO L93 Difference]: Finished difference Result 16353 states and 28863 transitions. [2018-07-24 13:04:39,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-07-24 13:04:39,802 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 857 [2018-07-24 13:04:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:04:39,859 INFO L225 Difference]: With dead ends: 16353 [2018-07-24 13:04:39,860 INFO L226 Difference]: Without dead ends: 11136 [2018-07-24 13:04:39,878 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3448 GetRequests, 3419 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2018-07-24 13:04:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11136 states. [2018-07-24 13:04:40,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11136 to 10801. [2018-07-24 13:04:40,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10801 states. [2018-07-24 13:04:40,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10801 states to 10801 states and 16239 transitions. [2018-07-24 13:04:40,185 INFO L78 Accepts]: Start accepts. Automaton has 10801 states and 16239 transitions. Word has length 857 [2018-07-24 13:04:40,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:04:40,186 INFO L471 AbstractCegarLoop]: Abstraction has 10801 states and 16239 transitions. [2018-07-24 13:04:40,186 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 13:04:40,186 INFO L276 IsEmpty]: Start isEmpty. Operand 10801 states and 16239 transitions. [2018-07-24 13:04:40,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2018-07-24 13:04:40,225 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:04:40,226 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:04:40,226 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:04:40,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1803286543, now seen corresponding path program 1 times [2018-07-24 13:04:40,227 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:04:40,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:40,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:40,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:04:40,229 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:04:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:40,984 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 75 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-07-24 13:04:40,985 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:04:40,985 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:04:40,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:40,996 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:04:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:41,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:04:41,834 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 13:04:41,834 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:04:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 13:04:42,368 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:04:42,368 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:04:42,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:04:42,389 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:04:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:04:43,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:04:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 13:04:43,910 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:04:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 13:04:44,432 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:04:44,433 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 13:04:44,433 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:04:44,436 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 13:04:44,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 13:04:44,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 13:04:44,437 INFO L87 Difference]: Start difference. First operand 10801 states and 16239 transitions. Second operand 9 states. [2018-07-24 13:05:03,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:03,161 INFO L93 Difference]: Finished difference Result 42937 states and 75683 transitions. [2018-07-24 13:05:03,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-07-24 13:05:03,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 884 [2018-07-24 13:05:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:03,300 INFO L225 Difference]: With dead ends: 42937 [2018-07-24 13:05:03,300 INFO L226 Difference]: Without dead ends: 32142 [2018-07-24 13:05:03,345 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3584 GetRequests, 3544 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2018-07-24 13:05:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32142 states. [2018-07-24 13:05:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32142 to 31575. [2018-07-24 13:05:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31575 states. [2018-07-24 13:05:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31575 states to 31575 states and 43803 transitions. [2018-07-24 13:05:04,303 INFO L78 Accepts]: Start accepts. Automaton has 31575 states and 43803 transitions. Word has length 884 [2018-07-24 13:05:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:04,304 INFO L471 AbstractCegarLoop]: Abstraction has 31575 states and 43803 transitions. [2018-07-24 13:05:04,304 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 13:05:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 31575 states and 43803 transitions. [2018-07-24 13:05:04,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2018-07-24 13:05:04,405 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:04,413 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:05:04,414 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:04,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1637878917, now seen corresponding path program 1 times [2018-07-24 13:05:04,414 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:04,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:04,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:04,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:04,416 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:04,788 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 13:05:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 164 proven. 92 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-24 13:05:05,568 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:05,569 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:05:05,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:05,584 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:05,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-07-24 13:05:06,559 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 164 proven. 92 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-07-24 13:05:06,978 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 13:05:06,979 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 13:05:06,979 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 13:05:06,981 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 13:05:06,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 13:05:06,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 13:05:06,982 INFO L87 Difference]: Start difference. First operand 31575 states and 43803 transitions. Second operand 5 states. [2018-07-24 13:05:13,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:13,860 INFO L93 Difference]: Finished difference Result 80208 states and 114364 transitions. [2018-07-24 13:05:13,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 13:05:13,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 992 [2018-07-24 13:05:13,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:14,009 INFO L225 Difference]: With dead ends: 80208 [2018-07-24 13:05:14,010 INFO L226 Difference]: Without dead ends: 48639 [2018-07-24 13:05:14,080 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1993 GetRequests, 1978 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 13:05:14,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48639 states. [2018-07-24 13:05:14,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48639 to 45956. [2018-07-24 13:05:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45956 states. [2018-07-24 13:05:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45956 states to 45956 states and 60151 transitions. [2018-07-24 13:05:15,034 INFO L78 Accepts]: Start accepts. Automaton has 45956 states and 60151 transitions. Word has length 992 [2018-07-24 13:05:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:15,034 INFO L471 AbstractCegarLoop]: Abstraction has 45956 states and 60151 transitions. [2018-07-24 13:05:15,034 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 13:05:15,034 INFO L276 IsEmpty]: Start isEmpty. Operand 45956 states and 60151 transitions. [2018-07-24 13:05:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2018-07-24 13:05:15,120 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:15,121 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:05:15,121 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:15,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1261293619, now seen corresponding path program 1 times [2018-07-24 13:05:15,122 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:15,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:15,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:15,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:15,124 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:16,188 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 351 proven. 129 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-07-24 13:05:16,188 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:16,188 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:05:16,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:16,196 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:16,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:17,657 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 432 proven. 2 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-07-24 13:05:17,657 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 432 proven. 2 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-07-24 13:05:18,409 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:18,410 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:05:18,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:18,427 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:19,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 525 proven. 6 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 13:05:20,345 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 527 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 13:05:21,368 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:05:21,369 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-07-24 13:05:21,369 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:05:21,371 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 13:05:21,371 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 13:05:21,371 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-07-24 13:05:21,371 INFO L87 Difference]: Start difference. First operand 45956 states and 60151 transitions. Second operand 9 states. [2018-07-24 13:05:40,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:05:40,447 INFO L93 Difference]: Finished difference Result 158440 states and 224374 transitions. [2018-07-24 13:05:40,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-07-24 13:05:40,448 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1152 [2018-07-24 13:05:40,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:05:40,930 INFO L225 Difference]: With dead ends: 158440 [2018-07-24 13:05:40,930 INFO L226 Difference]: Without dead ends: 112490 [2018-07-24 13:05:41,058 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4666 GetRequests, 4623 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=365, Invalid=1441, Unknown=0, NotChecked=0, Total=1806 [2018-07-24 13:05:41,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112490 states. [2018-07-24 13:05:43,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112490 to 109335. [2018-07-24 13:05:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109335 states. [2018-07-24 13:05:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109335 states to 109335 states and 138343 transitions. [2018-07-24 13:05:43,767 INFO L78 Accepts]: Start accepts. Automaton has 109335 states and 138343 transitions. Word has length 1152 [2018-07-24 13:05:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:05:43,768 INFO L471 AbstractCegarLoop]: Abstraction has 109335 states and 138343 transitions. [2018-07-24 13:05:43,768 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 13:05:43,768 INFO L276 IsEmpty]: Start isEmpty. Operand 109335 states and 138343 transitions. [2018-07-24 13:05:43,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2018-07-24 13:05:43,879 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:05:43,880 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:05:43,880 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:05:43,881 INFO L82 PathProgramCache]: Analyzing trace with hash -329497591, now seen corresponding path program 1 times [2018-07-24 13:05:43,881 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:05:43,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:43,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:43,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:05:43,882 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:05:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:44,598 WARN L169 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 13:05:44,904 WARN L169 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 13:05:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 388 proven. 50 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-07-24 13:05:46,141 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:46,141 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:05:46,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:46,149 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:46,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-07-24 13:05:47,553 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-07-24 13:05:48,687 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:05:48,687 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:05:48,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:05:48,707 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:05:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:05:49,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:05:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-07-24 13:05:51,167 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:05:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 527 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-07-24 13:05:51,822 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:05:51,824 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 16 [2018-07-24 13:05:51,824 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:05:51,825 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 13:05:51,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 13:05:51,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-07-24 13:05:51,826 INFO L87 Difference]: Start difference. First operand 109335 states and 138343 transitions. Second operand 10 states. [2018-07-24 13:06:09,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 13:06:09,356 INFO L93 Difference]: Finished difference Result 218727 states and 285310 transitions. [2018-07-24 13:06:09,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-07-24 13:06:09,357 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1162 [2018-07-24 13:06:09,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 13:06:09,689 INFO L225 Difference]: With dead ends: 218727 [2018-07-24 13:06:09,689 INFO L226 Difference]: Without dead ends: 110233 [2018-07-24 13:06:09,832 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4760 GetRequests, 4690 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=848, Invalid=3982, Unknown=0, NotChecked=0, Total=4830 [2018-07-24 13:06:09,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110233 states. [2018-07-24 13:06:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110233 to 109073. [2018-07-24 13:06:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109073 states. [2018-07-24 13:06:11,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109073 states to 109073 states and 130543 transitions. [2018-07-24 13:06:11,520 INFO L78 Accepts]: Start accepts. Automaton has 109073 states and 130543 transitions. Word has length 1162 [2018-07-24 13:06:11,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 13:06:11,521 INFO L471 AbstractCegarLoop]: Abstraction has 109073 states and 130543 transitions. [2018-07-24 13:06:11,521 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 13:06:11,521 INFO L276 IsEmpty]: Start isEmpty. Operand 109073 states and 130543 transitions. [2018-07-24 13:06:11,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1480 [2018-07-24 13:06:11,662 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 13:06:11,663 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 13:06:11,664 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-24 13:06:11,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2139798137, now seen corresponding path program 1 times [2018-07-24 13:06:11,664 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 13:06:11,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:11,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:11,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 13:06:11,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 13:06:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 979 proven. 336 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-07-24 13:06:18,928 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:18,928 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 13:06:18,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:18,936 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:19,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-07-24 13:06:20,435 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-07-24 13:06:21,343 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 13:06:21,344 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 13:06:21,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 13:06:21,360 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 13:06:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 13:06:22,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 13:06:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-07-24 13:06:23,531 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 13:06:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-07-24 13:06:24,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 13:06:24,678 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5, 5, 5] total 25 [2018-07-24 13:06:24,678 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 13:06:24,680 INFO L450 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-07-24 13:06:24,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-07-24 13:06:24,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2018-07-24 13:06:24,681 INFO L87 Difference]: Start difference. First operand 109073 states and 130543 transitions. Second operand 19 states. [2018-07-24 13:06:24,992 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2018-07-24 13:06:25,397 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2018-07-24 13:06:26,361 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2018-07-24 13:06:26,629 WARN L169 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-07-24 13:06:27,126 WARN L169 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2018-07-24 13:06:27,858 WARN L169 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-07-24 13:06:29,518 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2018-07-24 13:06:30,557 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2018-07-24 13:06:31,149 WARN L169 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2018-07-24 13:06:32,327 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-07-24 13:06:33,668 WARN L169 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2018-07-24 13:06:34,796 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2018-07-24 13:06:35,384 WARN L169 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2018-07-24 13:06:35,661 WARN L169 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2018-07-24 13:06:36,015 WARN L169 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-07-24 13:06:37,477 WARN L169 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2018-07-24 13:06:37,932 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2018-07-24 13:06:38,901 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-07-24 13:06:40,871 WARN L169 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-07-24 13:06:42,726 WARN L169 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2018-07-24 13:06:45,085 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2018-07-24 13:06:45,582 WARN L169 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2018-07-24 13:06:48,453 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2018-07-24 13:06:49,052 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2018-07-24 13:06:49,736 WARN L169 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2018-07-24 13:06:49,893 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2018-07-24 13:06:50,114 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2018-07-24 13:06:50,372 WARN L169 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-07-24 13:06:50,638 WARN L169 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2018-07-24 13:06:51,345 WARN L169 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-07-24 13:06:52,381 WARN L169 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2018-07-24 13:06:52,648 WARN L169 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2018-07-24 13:06:53,235 WARN L169 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2018-07-24 13:06:54,530 WARN L169 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-07-24 13:06:55,379 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-07-24 13:06:56,002 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2018-07-24 13:06:57,070 WARN L169 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-07-24 13:06:57,543 WARN L169 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2018-07-24 13:06:58,543 WARN L169 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2018-07-24 13:06:58,773 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2018-07-24 13:06:59,207 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2018-07-24 13:07:00,313 WARN L169 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2018-07-24 13:07:01,644 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-07-24 13:07:03,723 WARN L169 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2018-07-24 13:07:04,606 WARN L169 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2018-07-24 13:07:05,832 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-07-24 13:07:06,061 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-07-24 13:07:07,621 WARN L169 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-07-24 13:07:09,225 WARN L169 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2018-07-24 13:07:09,750 WARN L169 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2018-07-24 13:07:10,372 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2018-07-24 13:07:10,833 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-07-24 13:07:12,532 WARN L169 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2018-07-24 13:07:12,889 WARN L169 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-07-24 13:07:13,217 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2018-07-24 13:07:17,107 WARN L169 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2018-07-24 13:07:17,278 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2018-07-24 13:07:17,988 WARN L169 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2018-07-24 13:07:18,200 WARN L169 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 Received shutdown request... [2018-07-24 13:07:21,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-07-24 13:07:21,453 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 13:07:21,463 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 13:07:21,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 01:07:21 BoogieIcfgContainer [2018-07-24 13:07:21,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 13:07:21,466 INFO L168 Benchmark]: Toolchain (without parser) took 225835.78 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.7 GB). Peak memory consumption was 708.7 MB. Max. memory is 7.1 GB. [2018-07-24 13:07:21,467 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 13:07:21,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2553.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 232.5 MB). Peak memory consumption was 232.5 MB. Max. memory is 7.1 GB. [2018-07-24 13:07:21,468 INFO L168 Benchmark]: Boogie Procedure Inliner took 136.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 13:07:21,469 INFO L168 Benchmark]: Boogie Preprocessor took 640.49 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 847.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 91.4 MB. Max. memory is 7.1 GB. [2018-07-24 13:07:21,477 INFO L168 Benchmark]: RCFGBuilder took 11356.68 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 170.4 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -56.9 MB). Peak memory consumption was 723.1 MB. Max. memory is 7.1 GB. [2018-07-24 13:07:21,478 INFO L168 Benchmark]: TraceAbstraction took 211141.77 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: -823.3 MB). Peak memory consumption was 617.5 MB. Max. memory is 7.1 GB. [2018-07-24 13:07:21,487 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 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 2553.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 232.5 MB). Peak memory consumption was 232.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 136.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 640.49 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 847.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 91.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11356.68 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 170.4 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: -56.9 MB). Peak memory consumption was 723.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211141.77 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: -823.3 MB). Peak memory consumption was 617.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4775]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4775). Cancelled while BasicCegarLoop was constructing difference of abstraction (109073states) and interpolant automaton (currently 100 states, 19 states before enhancement), while ReachableStatesComputation was computing reachable states (122974 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 211.0s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 155.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1800 SDtfs, 54379 SDslu, 3794 SDs, 0 SdLazy, 89851 SolverSat, 30262 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26262 GetRequests, 25915 SyntacticMatches, 26 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7428 ImplicationChecksByTransitivity, 27.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109335occurred in iteration=7, 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: 7.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 8015 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 7.8s SatisfiabilityAnalysisTime, 28.4s InterpolantComputationTime, 21924 NumberOfCodeBlocks, 21924 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 34790 ConstructedInterpolants, 0 QuantifiedInterpolants, 77973488 SizeOfPredicates, 6 NumberOfNonLiveVariables, 18435 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 33 InterpolantComputations, 5 PerfectInterpolantSequences, 14296/15065 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label48_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_13-07-21-500.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label48_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_13-07-21-500.csv Completed graceful shutdown