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/Problem17_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:52:49,315 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:52:49,317 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:52:49,330 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:52:49,330 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:52:49,332 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:52:49,333 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:52:49,337 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:52:49,340 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:52:49,341 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:52:49,343 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:52:49,344 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:52:49,350 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:52:49,351 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:52:49,352 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:52:49,355 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:52:49,356 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:52:49,361 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:52:49,363 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:52:49,365 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:52:49,369 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:52:49,370 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:52:49,374 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:52:49,374 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:52:49,375 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:52:49,375 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:52:49,381 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:52:49,382 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:52:49,383 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:52:49,384 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:52:49,384 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:52:49,389 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:52:49,389 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:52:49,389 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:52:49,390 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:52:49,393 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:52:49,393 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:52:49,420 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:52:49,420 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:52:49,421 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:52:49,425 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:52:49,425 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:52:49,425 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:52:49,425 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:52:49,426 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:52:49,426 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:52:49,426 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:52:49,426 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:52:49,427 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:52:49,427 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:52:49,427 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:52:49,427 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:52:49,428 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:52:49,428 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:52:49,428 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:52:49,428 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:52:49,428 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:52:49,429 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:52:49,429 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:52:49,429 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:52:49,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:52:49,429 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:52:49,430 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:52:49,430 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:52:49,430 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:52:49,430 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:52:49,430 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:52:49,431 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:52:49,431 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:52:49,431 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:52:49,484 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:52:49,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:52:49,503 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:52:49,505 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:52:49,505 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:52:49,506 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label36_true-unreach-call.c [2018-07-24 14:52:49,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/780fc51e7/dfce8849b2664acea4b3ae2318418a97/FLAGcb167b4b7 [2018-07-24 14:52:50,256 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:52:50,257 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label36_true-unreach-call.c [2018-07-24 14:52:50,286 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/780fc51e7/dfce8849b2664acea4b3ae2318418a97/FLAGcb167b4b7 [2018-07-24 14:52:50,308 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/780fc51e7/dfce8849b2664acea4b3ae2318418a97 [2018-07-24 14:52:50,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:52:50,325 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:52:50,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:52:50,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:52:50,333 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:52:50,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:52:50" (1/1) ... [2018-07-24 14:52:50,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8b2370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:50, skipping insertion in model container [2018-07-24 14:52:50,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:52:50" (1/1) ... [2018-07-24 14:52:50,646 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:52:51,391 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:52:51,409 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:52:51,858 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:52:52,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:52 WrapperNode [2018-07-24 14:52:52,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:52:52,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:52:52,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:52:52,072 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:52:52,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:52" (1/1) ... [2018-07-24 14:52:52,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:52" (1/1) ... [2018-07-24 14:52:52,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:52:52,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:52:52,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:52:52,367 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:52:52,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:52" (1/1) ... [2018-07-24 14:52:52,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:52" (1/1) ... [2018-07-24 14:52:52,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:52" (1/1) ... [2018-07-24 14:52:52,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:52" (1/1) ... [2018-07-24 14:52:53,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:52" (1/1) ... [2018-07-24 14:52:53,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:52" (1/1) ... [2018-07-24 14:52:53,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:52" (1/1) ... [2018-07-24 14:52:53,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:52:53,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:52:53,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:52:53,249 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:52:53,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:52:53,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:52:53,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:52:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:52:53,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-24 14:52:53,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:52:53,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:52:53,320 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:52:53,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:52:53,320 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:52:53,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-24 14:53:03,399 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:53:03,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:53:03 BoogieIcfgContainer [2018-07-24 14:53:03,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:53:03,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:53:03,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:53:03,407 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:53:03,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:52:50" (1/3) ... [2018-07-24 14:53:03,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b8b5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:53:03, skipping insertion in model container [2018-07-24 14:53:03,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:52:52" (2/3) ... [2018-07-24 14:53:03,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b8b5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:53:03, skipping insertion in model container [2018-07-24 14:53:03,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:53:03" (3/3) ... [2018-07-24 14:53:03,411 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label36_true-unreach-call.c [2018-07-24 14:53:03,420 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:53:03,430 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:53:03,494 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:53:03,494 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:53:03,495 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:53:03,495 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:53:03,495 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:53:03,495 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:53:03,495 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:53:03,496 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:53:03,496 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:53:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-24 14:53:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-24 14:53:03,544 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:53:03,546 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] [2018-07-24 14:53:03,546 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:53:03,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1478484628, now seen corresponding path program 1 times [2018-07-24 14:53:03,554 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:53:03,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:53:03,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:53:03,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:53:03,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:53:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:53:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:53:04,180 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:53:04,180 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:53:04,181 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:53:04,187 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:53:04,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:53:04,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:53:04,208 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-24 14:53:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:53:17,983 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-07-24 14:53:17,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:53:17,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-07-24 14:53:17,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:53:18,016 INFO L225 Difference]: With dead ends: 2137 [2018-07-24 14:53:18,017 INFO L226 Difference]: Without dead ends: 1527 [2018-07-24 14:53:18,031 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:53:18,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-07-24 14:53:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-07-24 14:53:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-07-24 14:53:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-07-24 14:53:18,186 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 64 [2018-07-24 14:53:18,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:53:18,189 INFO L471 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-07-24 14:53:18,189 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:53:18,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-07-24 14:53:18,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-07-24 14:53:18,204 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:53:18,204 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:53:18,205 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:53:18,205 INFO L82 PathProgramCache]: Analyzing trace with hash -500420678, now seen corresponding path program 1 times [2018-07-24 14:53:18,205 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:53:18,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:53:18,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:53:18,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:53:18,207 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:53:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:53:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:53:18,478 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:53:18,479 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:53:18,479 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:53:18,481 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:53:18,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:53:18,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:53:18,482 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 5 states. [2018-07-24 14:53:29,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:53:29,900 INFO L93 Difference]: Finished difference Result 4413 states and 7007 transitions. [2018-07-24 14:53:29,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:53:29,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2018-07-24 14:53:29,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:53:29,922 INFO L225 Difference]: With dead ends: 4413 [2018-07-24 14:53:29,923 INFO L226 Difference]: Without dead ends: 2906 [2018-07-24 14:53:29,929 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:53:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2018-07-24 14:53:30,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2873. [2018-07-24 14:53:30,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2018-07-24 14:53:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4204 transitions. [2018-07-24 14:53:30,037 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4204 transitions. Word has length 136 [2018-07-24 14:53:30,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:53:30,038 INFO L471 AbstractCegarLoop]: Abstraction has 2873 states and 4204 transitions. [2018-07-24 14:53:30,038 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:53:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4204 transitions. [2018-07-24 14:53:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-24 14:53:30,044 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:53:30,045 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:53:30,045 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:53:30,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1505797533, now seen corresponding path program 1 times [2018-07-24 14:53:30,046 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:53:30,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:53:30,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:53:30,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:53:30,051 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:53:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:53:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:53:30,375 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:53:30,375 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:53:30,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:53:30,401 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:53:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:53:30,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:53:36,863 WARN L169 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 42 [2018-07-24 14:53:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:53:36,978 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:53:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:53:39,916 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:53:39,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-07-24 14:53:39,917 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:53:39,917 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:53:39,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:53:39,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2018-07-24 14:53:39,918 INFO L87 Difference]: Start difference. First operand 2873 states and 4204 transitions. Second operand 6 states. [2018-07-24 14:54:11,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:54:11,002 INFO L93 Difference]: Finished difference Result 11114 states and 16952 transitions. [2018-07-24 14:54:11,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:54:11,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-07-24 14:54:11,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:54:11,059 INFO L225 Difference]: With dead ends: 11114 [2018-07-24 14:54:11,059 INFO L226 Difference]: Without dead ends: 8247 [2018-07-24 14:54:11,082 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 273 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=46, Invalid=109, Unknown=1, NotChecked=0, Total=156 [2018-07-24 14:54:11,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2018-07-24 14:54:11,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 8239. [2018-07-24 14:54:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8239 states. [2018-07-24 14:54:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8239 states to 8239 states and 12082 transitions. [2018-07-24 14:54:11,339 INFO L78 Accepts]: Start accepts. Automaton has 8239 states and 12082 transitions. Word has length 139 [2018-07-24 14:54:11,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:54:11,340 INFO L471 AbstractCegarLoop]: Abstraction has 8239 states and 12082 transitions. [2018-07-24 14:54:11,340 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:54:11,340 INFO L276 IsEmpty]: Start isEmpty. Operand 8239 states and 12082 transitions. [2018-07-24 14:54:11,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-07-24 14:54:11,345 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:54:11,346 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:54:11,347 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:54:11,347 INFO L82 PathProgramCache]: Analyzing trace with hash 179439386, now seen corresponding path program 1 times [2018-07-24 14:54:11,347 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:54:11,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:11,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:11,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:11,349 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:54:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:11,713 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:54:11,713 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:54:11,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:11,724 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:54:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:11,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:54:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:11,858 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:54:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:12,035 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:54:12,035 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-07-24 14:54:12,035 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:54:12,036 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:54:12,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:54:12,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:54:12,036 INFO L87 Difference]: Start difference. First operand 8239 states and 12082 transitions. Second operand 3 states. [2018-07-24 14:54:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:54:16,794 INFO L93 Difference]: Finished difference Result 19970 states and 29474 transitions. [2018-07-24 14:54:16,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:54:16,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2018-07-24 14:54:16,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:54:16,852 INFO L225 Difference]: With dead ends: 19970 [2018-07-24 14:54:16,853 INFO L226 Difference]: Without dead ends: 11737 [2018-07-24 14:54:16,899 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 303 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:54:16,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2018-07-24 14:54:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 11736. [2018-07-24 14:54:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11736 states. [2018-07-24 14:54:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11736 states to 11736 states and 16481 transitions. [2018-07-24 14:54:17,208 INFO L78 Accepts]: Start accepts. Automaton has 11736 states and 16481 transitions. Word has length 152 [2018-07-24 14:54:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:54:17,209 INFO L471 AbstractCegarLoop]: Abstraction has 11736 states and 16481 transitions. [2018-07-24 14:54:17,209 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:54:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 11736 states and 16481 transitions. [2018-07-24 14:54:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-07-24 14:54:17,218 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:54:17,218 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:54:17,219 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:54:17,219 INFO L82 PathProgramCache]: Analyzing trace with hash 943618848, now seen corresponding path program 1 times [2018-07-24 14:54:17,219 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:54:17,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:17,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:17,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:17,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:54:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 14:54:17,509 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:54:17,509 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:54:17,510 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:54:17,510 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:54:17,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:54:17,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:54:17,511 INFO L87 Difference]: Start difference. First operand 11736 states and 16481 transitions. Second operand 3 states. [2018-07-24 14:54:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:54:23,397 INFO L93 Difference]: Finished difference Result 29602 states and 43061 transitions. [2018-07-24 14:54:23,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:54:23,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2018-07-24 14:54:23,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:54:23,473 INFO L225 Difference]: With dead ends: 29602 [2018-07-24 14:54:23,474 INFO L226 Difference]: Without dead ends: 17872 [2018-07-24 14:54:23,508 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:54:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17872 states. [2018-07-24 14:54:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17872 to 17872. [2018-07-24 14:54:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17872 states. [2018-07-24 14:54:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17872 states to 17872 states and 23647 transitions. [2018-07-24 14:54:23,876 INFO L78 Accepts]: Start accepts. Automaton has 17872 states and 23647 transitions. Word has length 228 [2018-07-24 14:54:23,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:54:23,876 INFO L471 AbstractCegarLoop]: Abstraction has 17872 states and 23647 transitions. [2018-07-24 14:54:23,877 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:54:23,877 INFO L276 IsEmpty]: Start isEmpty. Operand 17872 states and 23647 transitions. [2018-07-24 14:54:23,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-07-24 14:54:23,884 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:54:23,884 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:54:23,884 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:54:23,885 INFO L82 PathProgramCache]: Analyzing trace with hash -941007225, now seen corresponding path program 1 times [2018-07-24 14:54:23,885 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:54:23,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:23,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:23,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:23,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:54:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:24,176 WARN L169 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:54:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 115 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 14:54:24,300 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:54:24,301 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:54:24,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:24,484 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:54:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:24,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:54:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:24,742 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:54:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:25,400 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:54:25,400 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:54:25,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:25,422 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:54:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:25,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:54:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:54:25,853 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:54:25,973 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 14:54:25,975 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-24 14:54:25,975 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-07-24 14:54:25,975 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:54:25,976 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:54:25,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:54:25,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:54:25,977 INFO L87 Difference]: Start difference. First operand 17872 states and 23647 transitions. Second operand 5 states. [2018-07-24 14:54:31,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:54:31,133 INFO L93 Difference]: Finished difference Result 34949 states and 46564 transitions. [2018-07-24 14:54:31,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:54:31,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 229 [2018-07-24 14:54:31,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:54:31,187 INFO L225 Difference]: With dead ends: 34949 [2018-07-24 14:54:31,187 INFO L226 Difference]: Without dead ends: 17083 [2018-07-24 14:54:31,218 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 904 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:54:31,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17083 states. [2018-07-24 14:54:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17083 to 16644. [2018-07-24 14:54:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16644 states. [2018-07-24 14:54:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16644 states to 16644 states and 19795 transitions. [2018-07-24 14:54:31,516 INFO L78 Accepts]: Start accepts. Automaton has 16644 states and 19795 transitions. Word has length 229 [2018-07-24 14:54:31,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:54:31,516 INFO L471 AbstractCegarLoop]: Abstraction has 16644 states and 19795 transitions. [2018-07-24 14:54:31,516 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:54:31,517 INFO L276 IsEmpty]: Start isEmpty. Operand 16644 states and 19795 transitions. [2018-07-24 14:54:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-07-24 14:54:31,529 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:54:31,529 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:54:31,530 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:54:31,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1870080027, now seen corresponding path program 1 times [2018-07-24 14:54:31,530 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:54:31,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:31,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:31,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:31,531 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:54:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-07-24 14:54:32,099 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:54:32,099 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:54:32,100 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:54:32,100 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:54:32,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:54:32,101 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:54:32,101 INFO L87 Difference]: Start difference. First operand 16644 states and 19795 transitions. Second operand 3 states. [2018-07-24 14:54:39,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:54:39,960 INFO L93 Difference]: Finished difference Result 39900 states and 48482 transitions. [2018-07-24 14:54:39,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:54:39,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 318 [2018-07-24 14:54:39,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:54:40,033 INFO L225 Difference]: With dead ends: 39900 [2018-07-24 14:54:40,034 INFO L226 Difference]: Without dead ends: 23262 [2018-07-24 14:54:40,067 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:54:40,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23262 states. [2018-07-24 14:54:40,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23262 to 23258. [2018-07-24 14:54:40,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23258 states. [2018-07-24 14:54:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23258 states to 23258 states and 27470 transitions. [2018-07-24 14:54:40,424 INFO L78 Accepts]: Start accepts. Automaton has 23258 states and 27470 transitions. Word has length 318 [2018-07-24 14:54:40,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:54:40,425 INFO L471 AbstractCegarLoop]: Abstraction has 23258 states and 27470 transitions. [2018-07-24 14:54:40,425 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:54:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 23258 states and 27470 transitions. [2018-07-24 14:54:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-07-24 14:54:40,457 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:54:40,457 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:54:40,458 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:54:40,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1016304439, now seen corresponding path program 1 times [2018-07-24 14:54:40,458 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:54:40,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:40,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:40,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:40,459 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:54:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:41,472 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:54:41,473 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-07-24 14:54:41,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:41,490 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:54:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:41,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:54:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:42,317 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:54:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:54:42,767 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:54:42,768 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-07-24 14:54:42,768 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:54:42,768 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:54:42,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:54:42,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-07-24 14:54:42,769 INFO L87 Difference]: Start difference. First operand 23258 states and 27470 transitions. Second operand 6 states. [2018-07-24 14:54:56,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:54:56,870 INFO L93 Difference]: Finished difference Result 78623 states and 94421 transitions. [2018-07-24 14:54:56,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:54:56,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 412 [2018-07-24 14:54:56,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:54:57,043 INFO L225 Difference]: With dead ends: 78623 [2018-07-24 14:54:57,043 INFO L226 Difference]: Without dead ends: 55371 [2018-07-24 14:54:57,106 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 819 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-07-24 14:54:57,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55371 states. [2018-07-24 14:54:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55371 to 52727. [2018-07-24 14:54:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52727 states. [2018-07-24 14:54:57,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52727 states to 52727 states and 62164 transitions. [2018-07-24 14:54:57,978 INFO L78 Accepts]: Start accepts. Automaton has 52727 states and 62164 transitions. Word has length 412 [2018-07-24 14:54:57,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:54:57,979 INFO L471 AbstractCegarLoop]: Abstraction has 52727 states and 62164 transitions. [2018-07-24 14:54:57,979 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:54:57,979 INFO L276 IsEmpty]: Start isEmpty. Operand 52727 states and 62164 transitions. [2018-07-24 14:54:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-07-24 14:54:58,030 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:54:58,031 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:54:58,031 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:54:58,031 INFO L82 PathProgramCache]: Analyzing trace with hash -2006492343, now seen corresponding path program 1 times [2018-07-24 14:54:58,031 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:54:58,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:58,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:58,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:54:58,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:54:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:54:58,512 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:54:58,512 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:54:58,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:58,521 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:54:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:54:58,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:54:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:54:59,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:54:59,625 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:54:59,649 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:54:59,649 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:54:59,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:54:59,665 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:55:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:55:00,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:55:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:55:00,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:55:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-07-24 14:55:00,533 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:55:00,534 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 7 [2018-07-24 14:55:00,534 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:55:00,535 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:55:00,535 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:55:00,535 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 14:55:00,535 INFO L87 Difference]: Start difference. First operand 52727 states and 62164 transitions. Second operand 6 states. [2018-07-24 14:55:13,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:55:13,597 INFO L93 Difference]: Finished difference Result 136591 states and 167425 transitions. [2018-07-24 14:55:13,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 14:55:13,597 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 491 [2018-07-24 14:55:13,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:55:13,966 INFO L225 Difference]: With dead ends: 136591 [2018-07-24 14:55:13,966 INFO L226 Difference]: Without dead ends: 83870 [2018-07-24 14:55:14,157 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1975 GetRequests, 1962 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:55:14,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83870 states. [2018-07-24 14:55:15,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83870 to 80617. [2018-07-24 14:55:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80617 states. [2018-07-24 14:55:16,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80617 states to 80617 states and 92324 transitions. [2018-07-24 14:55:16,038 INFO L78 Accepts]: Start accepts. Automaton has 80617 states and 92324 transitions. Word has length 491 [2018-07-24 14:55:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:55:16,039 INFO L471 AbstractCegarLoop]: Abstraction has 80617 states and 92324 transitions. [2018-07-24 14:55:16,039 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:55:16,039 INFO L276 IsEmpty]: Start isEmpty. Operand 80617 states and 92324 transitions. [2018-07-24 14:55:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2018-07-24 14:55:16,081 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:55:16,082 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:55:16,082 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:55:16,082 INFO L82 PathProgramCache]: Analyzing trace with hash 755650577, now seen corresponding path program 1 times [2018-07-24 14:55:16,083 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:55:16,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:55:16,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:55:16,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:55:16,084 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:55:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:55:16,598 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-07-24 14:55:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2018-07-24 14:55:16,755 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:55:16,755 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:55:16,755 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:55:16,756 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:55:16,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:55:16,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:55:16,757 INFO L87 Difference]: Start difference. First operand 80617 states and 92324 transitions. Second operand 4 states. [2018-07-24 14:55:26,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:55:26,057 INFO L93 Difference]: Finished difference Result 216137 states and 252308 transitions. [2018-07-24 14:55:26,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:55:26,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 501 [2018-07-24 14:55:26,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:55:27,288 INFO L225 Difference]: With dead ends: 216137 [2018-07-24 14:55:27,288 INFO L226 Difference]: Without dead ends: 135564 [2018-07-24 14:55:27,473 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:55:27,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135564 states. [2018-07-24 14:55:29,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135564 to 131617. [2018-07-24 14:55:29,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131617 states. [2018-07-24 14:55:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131617 states to 131617 states and 151382 transitions. [2018-07-24 14:55:29,522 INFO L78 Accepts]: Start accepts. Automaton has 131617 states and 151382 transitions. Word has length 501 [2018-07-24 14:55:29,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:55:29,523 INFO L471 AbstractCegarLoop]: Abstraction has 131617 states and 151382 transitions. [2018-07-24 14:55:29,523 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:55:29,524 INFO L276 IsEmpty]: Start isEmpty. Operand 131617 states and 151382 transitions. [2018-07-24 14:55:29,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-07-24 14:55:29,568 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:55:29,568 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:55:29,568 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:55:29,569 INFO L82 PathProgramCache]: Analyzing trace with hash -67427359, now seen corresponding path program 1 times [2018-07-24 14:55:29,569 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:55:29,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:55:29,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:55:29,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:55:29,570 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:55:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:55:30,127 WARN L169 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-07-24 14:55:31,876 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 16 proven. 341 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 14:55:31,877 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:55:31,877 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:55:31,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:55:31,884 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:55:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:55:32,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:55:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-07-24 14:55:32,961 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:55:33,235 WARN L169 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-07-24 14:55:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 249 proven. 109 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-24 14:55:33,667 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:55:33,667 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:55:33,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:55:33,686 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:55:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:55:34,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:55:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-07-24 14:55:34,379 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:55:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 179 proven. 175 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-07-24 14:55:35,676 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:55:35,677 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5, 5, 5] total 23 [2018-07-24 14:55:35,677 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:55:35,679 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-24 14:55:35,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-24 14:55:35,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2018-07-24 14:55:35,680 INFO L87 Difference]: Start difference. First operand 131617 states and 151382 transitions. Second operand 18 states. [2018-07-24 14:56:16,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:56:16,702 INFO L93 Difference]: Finished difference Result 376438 states and 433493 transitions. [2018-07-24 14:56:16,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-07-24 14:56:16,704 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 509 [2018-07-24 14:56:16,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:56:17,064 INFO L225 Difference]: With dead ends: 376438 [2018-07-24 14:56:17,065 INFO L226 Difference]: Without dead ends: 142508 [2018-07-24 14:56:17,434 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2136 GetRequests, 2051 SyntacticMatches, 9 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1215, Invalid=4791, Unknown=0, NotChecked=0, Total=6006 [2018-07-24 14:56:17,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142508 states. [2018-07-24 14:56:19,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142508 to 130325. [2018-07-24 14:56:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130325 states. [2018-07-24 14:56:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130325 states to 130325 states and 146737 transitions. [2018-07-24 14:56:20,266 INFO L78 Accepts]: Start accepts. Automaton has 130325 states and 146737 transitions. Word has length 509 [2018-07-24 14:56:20,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:56:20,267 INFO L471 AbstractCegarLoop]: Abstraction has 130325 states and 146737 transitions. [2018-07-24 14:56:20,267 INFO L472 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-07-24 14:56:20,267 INFO L276 IsEmpty]: Start isEmpty. Operand 130325 states and 146737 transitions. [2018-07-24 14:56:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-07-24 14:56:20,287 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:56:20,288 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:56:20,288 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:56:20,289 INFO L82 PathProgramCache]: Analyzing trace with hash -885144546, now seen corresponding path program 1 times [2018-07-24 14:56:20,289 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:56:20,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:56:20,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:56:20,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:56:20,290 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:56:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:56:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:56:21,470 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:56:21,470 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:56:21,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:56:21,477 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:56:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:56:21,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:56:24,177 WARN L169 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 83 DAG size of output: 24 [2018-07-24 14:56:24,604 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 344 proven. 55 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-07-24 14:56:24,604 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:56:27,430 WARN L169 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-07-24 14:56:27,499 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:56:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 177 proven. 275 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:56:29,339 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:56:29,339 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:56:29,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:56:29,360 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:56:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:56:29,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:56:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 397 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-07-24 14:56:30,378 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:56:30,563 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-07-24 14:56:37,035 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:56:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 177 proven. 275 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:56:38,607 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:56:38,607 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9, 9, 8, 8] total 43 [2018-07-24 14:56:38,607 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:56:38,609 INFO L450 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-07-24 14:56:38,610 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-07-24 14:56:38,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1606, Unknown=3, NotChecked=0, Total=1806 [2018-07-24 14:56:38,612 INFO L87 Difference]: Start difference. First operand 130325 states and 146737 transitions. Second operand 26 states. Received shutdown request... [2018-07-24 14:56:46,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:56:46,930 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:56:46,937 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:56:46,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:56:46 BoogieIcfgContainer [2018-07-24 14:56:46,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:56:46,938 INFO L168 Benchmark]: Toolchain (without parser) took 236615.46 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -743.8 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-24 14:56:46,939 INFO L168 Benchmark]: CDTParser took 0.21 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 14:56:46,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1745.58 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:56:46,941 INFO L168 Benchmark]: Boogie Procedure Inliner took 294.70 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:56:46,941 INFO L168 Benchmark]: Boogie Preprocessor took 881.97 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 939.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:56:46,943 INFO L168 Benchmark]: RCFGBuilder took 10151.93 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 502.5 MB). Peak memory consumption was 502.5 MB. Max. memory is 7.1 GB. [2018-07-24 14:56:46,944 INFO L168 Benchmark]: TraceAbstraction took 223533.90 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -315.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 14:56:46,948 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1745.58 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 294.70 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 881.97 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 939.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10151.93 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 502.5 MB). Peak memory consumption was 502.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223533.90 ms. Allocated memory was 2.5 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -315.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 179]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 179). Cancelled while BasicCegarLoop was constructing difference of abstraction (130325states) and interpolant automaton (currently 8 states, 26 states before enhancement), while ReachableStatesComputation was computing reachable states (147 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 223.4s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 169.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5074 SDtfs, 30232 SDslu, 3492 SDs, 0 SdLazy, 47039 SolverSat, 11484 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 143.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8613 GetRequests, 8391 SyntacticMatches, 37 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2789 ImplicationChecksByTransitivity, 28.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131617occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 22526 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 37.9s InterpolantComputationTime, 7906 NumberOfCodeBlocks, 7906 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 12077 ConstructedInterpolants, 276 QuantifiedInterpolants, 27545358 SizeOfPredicates, 29 NumberOfNonLiveVariables, 6480 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 34 InterpolantComputations, 10 PerfectInterpolantSequences, 7007/8943 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/Problem17_label36_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-56-46-966.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label36_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-56-46-966.csv Completed graceful shutdown