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/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:44:21,210 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:44:21,213 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:44:21,228 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:44:21,229 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:44:21,230 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:44:21,231 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:44:21,233 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:44:21,235 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:44:21,236 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:44:21,237 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:44:21,237 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:44:21,238 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:44:21,239 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:44:21,240 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:44:21,241 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:44:21,242 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:44:21,244 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:44:21,246 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:44:21,251 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:44:21,255 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:44:21,257 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:44:21,263 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 20:44:21,264 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 20:44:21,264 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 20:44:21,265 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 20:44:21,267 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 20:44:21,270 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 20:44:21,271 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 20:44:21,272 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 20:44:21,272 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 20:44:21,273 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 20:44:21,277 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 20:44:21,278 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 20:44:21,280 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 20:44:21,281 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 20:44:21,282 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 20:44:21,310 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:44:21,311 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:44:21,312 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:44:21,313 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:44:21,313 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:44:21,313 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:44:21,313 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:44:21,313 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:44:21,314 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:44:21,314 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:44:21,314 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:44:21,317 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:44:21,317 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:44:21,318 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:44:21,318 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:44:21,318 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:44:21,320 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:44:21,320 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:44:21,320 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:44:21,320 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:44:21,320 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:44:21,321 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:44:21,321 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:44:21,321 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:44:21,321 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:44:21,322 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:44:21,322 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:44:21,322 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:44:21,322 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:44:21,322 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:44:21,323 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:44:21,323 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:44:21,323 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:44:21,375 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:44:21,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:44:21,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:44:21,400 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:44:21,401 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:44:21,402 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c [2018-07-23 20:44:21,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6802add97/3a3f2a01050947f09d9b433e85b88b06/FLAGa5ef77f00 [2018-07-23 20:44:22,258 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:44:22,259 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label55_true-unreach-call.c [2018-07-23 20:44:22,287 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6802add97/3a3f2a01050947f09d9b433e85b88b06/FLAGa5ef77f00 [2018-07-23 20:44:22,309 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6802add97/3a3f2a01050947f09d9b433e85b88b06 [2018-07-23 20:44:22,325 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:44:22,327 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:44:22,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:44:22,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:44:22,336 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:44:22,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:44:22" (1/1) ... [2018-07-23 20:44:22,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f899ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:22, skipping insertion in model container [2018-07-23 20:44:22,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:44:22" (1/1) ... [2018-07-23 20:44:22,671 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:44:23,250 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:44:23,271 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:44:23,563 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:44:23,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:23 WrapperNode [2018-07-23 20:44:23,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:44:23,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:44:23,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:44:23,650 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:44:23,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:23" (1/1) ... [2018-07-23 20:44:23,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:23" (1/1) ... [2018-07-23 20:44:23,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:44:23,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:44:23,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:44:23,853 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:44:24,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:23" (1/1) ... [2018-07-23 20:44:24,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:23" (1/1) ... [2018-07-23 20:44:24,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:23" (1/1) ... [2018-07-23 20:44:24,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:23" (1/1) ... [2018-07-23 20:44:24,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:23" (1/1) ... [2018-07-23 20:44:24,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:23" (1/1) ... [2018-07-23 20:44:24,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:23" (1/1) ... [2018-07-23 20:44:24,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:44:24,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:44:24,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:44:24,259 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:44:24,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:23" (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 [2018-07-23 20:44:24,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:44:24,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:44:24,349 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 [2018-07-23 20:44:24,349 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 [2018-07-23 20:44:24,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:44:24,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:44:24,350 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:44:24,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:44:30,058 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:44:30,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:44:30 BoogieIcfgContainer [2018-07-23 20:44:30,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:44:30,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:44:30,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:44:30,066 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:44:30,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:44:22" (1/3) ... [2018-07-23 20:44:30,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4037ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:44:30, skipping insertion in model container [2018-07-23 20:44:30,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:44:23" (2/3) ... [2018-07-23 20:44:30,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4037ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:44:30, skipping insertion in model container [2018-07-23 20:44:30,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:44:30" (3/3) ... [2018-07-23 20:44:30,072 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label55_true-unreach-call.c [2018-07-23 20:44:30,083 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:44:30,100 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:44:30,171 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:44:30,172 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:44:30,172 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:44:30,173 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:44:30,173 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:44:30,173 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:44:30,173 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:44:30,173 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:44:30,173 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:44:30,204 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-07-23 20:44:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-23 20:44:30,226 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:44:30,228 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:44:30,229 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]=== [2018-07-23 20:44:30,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1276853404, now seen corresponding path program 1 times [2018-07-23 20:44:30,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:44:30,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:44:30,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:44:30,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:44:30,304 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:44:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:44:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:44:31,650 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:44:31,650 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 20:44:31,650 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:44:31,658 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 20:44:31,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 20:44:31,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 20:44:31,679 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-07-23 20:44:35,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:44:35,638 INFO L93 Difference]: Finished difference Result 1058 states and 1911 transitions. [2018-07-23 20:44:35,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 20:44:35,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2018-07-23 20:44:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:44:35,666 INFO L225 Difference]: With dead ends: 1058 [2018-07-23 20:44:35,667 INFO L226 Difference]: Without dead ends: 740 [2018-07-23 20:44:35,675 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 [2018-07-23 20:44:35,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2018-07-23 20:44:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 525. [2018-07-23 20:44:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-07-23 20:44:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 877 transitions. [2018-07-23 20:44:35,776 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 877 transitions. Word has length 169 [2018-07-23 20:44:35,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:44:35,779 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 877 transitions. [2018-07-23 20:44:35,779 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 20:44:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 877 transitions. [2018-07-23 20:44:35,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-07-23 20:44:35,786 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:44:35,787 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:44:35,787 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]=== [2018-07-23 20:44:35,787 INFO L82 PathProgramCache]: Analyzing trace with hash 15466080, now seen corresponding path program 1 times [2018-07-23 20:44:35,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:44:35,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:44:35,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:44:35,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:44:35,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:44:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:44:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:44:36,177 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:44:36,178 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:44:36,178 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:44:36,180 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:44:36,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:44:36,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:44:36,182 INFO L87 Difference]: Start difference. First operand 525 states and 877 transitions. Second operand 3 states. [2018-07-23 20:44:38,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:44:38,397 INFO L93 Difference]: Finished difference Result 1473 states and 2532 transitions. [2018-07-23 20:44:38,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:44:38,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2018-07-23 20:44:38,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:44:38,407 INFO L225 Difference]: With dead ends: 1473 [2018-07-23 20:44:38,407 INFO L226 Difference]: Without dead ends: 954 [2018-07-23 20:44:38,411 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:44:38,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-07-23 20:44:38,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 952. [2018-07-23 20:44:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-07-23 20:44:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1519 transitions. [2018-07-23 20:44:38,454 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1519 transitions. Word has length 182 [2018-07-23 20:44:38,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:44:38,455 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1519 transitions. [2018-07-23 20:44:38,456 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:44:38,456 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1519 transitions. [2018-07-23 20:44:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-23 20:44:38,461 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:44:38,461 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:44:38,462 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]=== [2018-07-23 20:44:38,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1708917764, now seen corresponding path program 1 times [2018-07-23 20:44:38,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:44:38,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:44:38,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:44:38,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:44:38,464 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:44:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:44:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:44:38,985 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:44:38,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:44:38,986 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:44:38,986 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:44:38,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:44:38,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:44:38,987 INFO L87 Difference]: Start difference. First operand 952 states and 1519 transitions. Second operand 3 states. [2018-07-23 20:44:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:44:42,450 INFO L93 Difference]: Finished difference Result 2730 states and 4466 transitions. [2018-07-23 20:44:42,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:44:42,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2018-07-23 20:44:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:44:42,474 INFO L225 Difference]: With dead ends: 2730 [2018-07-23 20:44:42,475 INFO L226 Difference]: Without dead ends: 1784 [2018-07-23 20:44:42,480 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:44:42,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2018-07-23 20:44:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1784. [2018-07-23 20:44:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1784 states. [2018-07-23 20:44:42,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2830 transitions. [2018-07-23 20:44:42,564 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2830 transitions. Word has length 184 [2018-07-23 20:44:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:44:42,565 INFO L471 AbstractCegarLoop]: Abstraction has 1784 states and 2830 transitions. [2018-07-23 20:44:42,565 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:44:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2830 transitions. [2018-07-23 20:44:42,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-23 20:44:42,578 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:44:42,579 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:44:42,579 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]=== [2018-07-23 20:44:42,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1523085736, now seen corresponding path program 1 times [2018-07-23 20:44:42,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:44:42,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:44:42,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:44:42,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:44:42,582 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:44:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:44:42,834 WARN L169 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:44:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:44:43,076 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:44:43,076 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 20:44:43,077 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:44:43,078 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 20:44:43,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 20:44:43,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 20:44:43,079 INFO L87 Difference]: Start difference. First operand 1784 states and 2830 transitions. Second operand 6 states. [2018-07-23 20:44:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:44:46,355 INFO L93 Difference]: Finished difference Result 3815 states and 6109 transitions. [2018-07-23 20:44:46,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:44:46,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2018-07-23 20:44:46,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:44:46,375 INFO L225 Difference]: With dead ends: 3815 [2018-07-23 20:44:46,375 INFO L226 Difference]: Without dead ends: 2037 [2018-07-23 20:44:46,385 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 20:44:46,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2018-07-23 20:44:46,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 1862. [2018-07-23 20:44:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1862 states. [2018-07-23 20:44:46,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2728 transitions. [2018-07-23 20:44:46,461 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2728 transitions. Word has length 186 [2018-07-23 20:44:46,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:44:46,461 INFO L471 AbstractCegarLoop]: Abstraction has 1862 states and 2728 transitions. [2018-07-23 20:44:46,461 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 20:44:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2728 transitions. [2018-07-23 20:44:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-07-23 20:44:46,470 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:44:46,471 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:44:46,471 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]=== [2018-07-23 20:44:46,471 INFO L82 PathProgramCache]: Analyzing trace with hash 329250859, now seen corresponding path program 1 times [2018-07-23 20:44:46,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:44:46,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:44:46,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:44:46,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:44:46,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:44:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:44:46,780 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:44:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 39 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 20:44:47,176 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:44:47,177 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:44:47,178 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-07-23 20:44:47,181 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [813], [815], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-07-23 20:44:47,314 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:44:47,315 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown