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/Problem12_label20_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:49:27,272 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:49:27,274 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:49:27,286 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:49:27,286 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:49:27,288 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:49:27,289 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:49:27,291 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:49:27,292 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:49:27,293 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:49:27,294 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:49:27,294 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:49:27,295 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:49:27,296 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:49:27,297 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:49:27,298 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:49:27,299 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:49:27,301 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:49:27,303 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:49:27,305 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:49:27,306 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:49:27,307 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:49:27,309 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:49:27,310 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:49:27,310 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:49:27,311 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:49:27,315 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:49:27,316 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:49:27,317 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:49:27,318 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:49:27,318 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:49:27,319 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:49:27,319 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:49:27,319 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:49:27,320 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:49:27,321 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:49:27,321 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 11:49:27,338 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:49:27,338 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:49:27,339 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:49:27,339 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:49:27,340 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:49:27,340 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:49:27,340 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:49:27,341 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:49:27,342 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:49:27,342 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:49:27,342 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:49:27,343 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:49:27,343 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:49:27,343 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:49:27,344 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:49:27,344 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:49:27,344 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:49:27,344 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:49:27,344 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:49:27,345 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:49:27,345 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:49:27,345 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:49:27,347 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:49:27,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:49:27,347 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:49:27,347 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:49:27,347 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:49:27,348 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:49:27,348 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:49:27,348 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:49:27,348 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:49:27,349 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:49:27,349 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:49:27,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:49:27,413 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:49:27,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:49:27,420 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:49:27,420 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:49:27,421 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label20_false-unreach-call.c [2018-07-24 11:49:27,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08ef91ba/2b78b7f5ed9e43eeb7a067eae339108e/FLAG2d69cc2d2 [2018-07-24 11:49:28,243 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:49:28,244 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label20_false-unreach-call.c [2018-07-24 11:49:28,282 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08ef91ba/2b78b7f5ed9e43eeb7a067eae339108e/FLAG2d69cc2d2 [2018-07-24 11:49:28,307 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08ef91ba/2b78b7f5ed9e43eeb7a067eae339108e [2018-07-24 11:49:28,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:49:28,324 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:49:28,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:49:28,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:49:28,336 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:49:28,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:49:28" (1/1) ... [2018-07-24 11:49:28,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d65a7e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:28, skipping insertion in model container [2018-07-24 11:49:28,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:49:28" (1/1) ... [2018-07-24 11:49:28,704 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:49:29,801 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:49:29,818 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:49:30,644 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:49:30,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:30 WrapperNode [2018-07-24 11:49:30,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:49:30,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:49:30,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:49:30,878 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:49:30,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:30" (1/1) ... [2018-07-24 11:49:30,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:30" (1/1) ... [2018-07-24 11:49:31,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:49:31,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:49:31,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:49:31,212 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:49:31,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:30" (1/1) ... [2018-07-24 11:49:31,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:30" (1/1) ... [2018-07-24 11:49:31,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:30" (1/1) ... [2018-07-24 11:49:31,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:30" (1/1) ... [2018-07-24 11:49:32,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:30" (1/1) ... [2018-07-24 11:49:32,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:30" (1/1) ... [2018-07-24 11:49:32,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:30" (1/1) ... [2018-07-24 11:49:32,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:49:32,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:49:32,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:49:32,293 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:49:32,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:30" (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 11:49:32,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:49:32,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:49:32,369 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:49:32,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 11:49:32,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:49:32,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:49:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:49:32,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:49:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:49:32,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 11:49:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:49:32,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 11:49:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:49:32,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:49:43,793 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:49:43,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:49:43 BoogieIcfgContainer [2018-07-24 11:49:43,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:49:43,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:49:43,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:49:43,798 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:49:43,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:49:28" (1/3) ... [2018-07-24 11:49:43,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26deb5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:49:43, skipping insertion in model container [2018-07-24 11:49:43,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:49:30" (2/3) ... [2018-07-24 11:49:43,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26deb5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:49:43, skipping insertion in model container [2018-07-24 11:49:43,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:49:43" (3/3) ... [2018-07-24 11:49:43,802 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label20_false-unreach-call.c [2018-07-24 11:49:43,810 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:49:43,819 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:49:43,883 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:49:43,884 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:49:43,884 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:49:43,884 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:49:43,885 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:49:43,885 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:49:43,885 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:49:43,885 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:49:43,885 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:49:43,925 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-24 11:49:43,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-24 11:49:43,932 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:49:43,933 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:49:43,934 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:49:43,940 INFO L82 PathProgramCache]: Analyzing trace with hash -763308349, now seen corresponding path program 1 times [2018-07-24 11:49:43,942 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:49:43,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:49:43,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:49:43,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:49:43,993 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:49:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:49:44,315 WARN L169 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:49:44,399 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 11:49:44,402 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:49:44,402 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:49:44,402 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:49:44,408 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:49:44,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:49:44,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:49:44,427 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-24 11:49:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:49:57,347 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-24 11:49:57,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:49:57,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-07-24 11:49:57,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:49:57,387 INFO L225 Difference]: With dead ends: 2446 [2018-07-24 11:49:57,387 INFO L226 Difference]: Without dead ends: 1604 [2018-07-24 11:49:57,397 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:49:57,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-24 11:49:57,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-24 11:49:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-24 11:49:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-07-24 11:49:57,559 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 19 [2018-07-24 11:49:57,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:49:57,560 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-07-24 11:49:57,560 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:49:57,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-07-24 11:49:57,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-07-24 11:49:57,569 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:49:57,569 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] [2018-07-24 11:49:57,569 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:49:57,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1804736796, now seen corresponding path program 1 times [2018-07-24 11:49:57,570 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:49:57,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:49:57,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:49:57,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:49:57,573 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:49:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:49:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:49:57,934 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:49:57,934 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:49:57,934 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:49:57,936 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:49:57,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:49:57,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:49:57,937 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-07-24 11:50:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:50:10,411 INFO L93 Difference]: Finished difference Result 4043 states and 7442 transitions. [2018-07-24 11:50:10,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:50:10,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2018-07-24 11:50:10,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:50:10,434 INFO L225 Difference]: With dead ends: 4043 [2018-07-24 11:50:10,434 INFO L226 Difference]: Without dead ends: 2445 [2018-07-24 11:50:10,441 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 11:50:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2018-07-24 11:50:10,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 2410. [2018-07-24 11:50:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2410 states. [2018-07-24 11:50:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 4138 transitions. [2018-07-24 11:50:10,525 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 4138 transitions. Word has length 93 [2018-07-24 11:50:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:50:10,526 INFO L471 AbstractCegarLoop]: Abstraction has 2410 states and 4138 transitions. [2018-07-24 11:50:10,526 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:50:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 4138 transitions. [2018-07-24 11:50:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-07-24 11:50:10,530 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:50:10,530 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] [2018-07-24 11:50:10,530 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:50:10,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1229521984, now seen corresponding path program 1 times [2018-07-24 11:50:10,531 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:50:10,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:10,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:50:10,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:10,532 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:50:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:50:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:50:10,778 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:50:10,778 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 11:50:10,778 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:50:10,781 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 11:50:10,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 11:50:10,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:50:10,783 INFO L87 Difference]: Start difference. First operand 2410 states and 4138 transitions. Second operand 4 states. [2018-07-24 11:50:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:50:20,696 INFO L93 Difference]: Finished difference Result 9480 states and 16721 transitions. [2018-07-24 11:50:20,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 11:50:20,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2018-07-24 11:50:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:50:20,737 INFO L225 Difference]: With dead ends: 9480 [2018-07-24 11:50:20,737 INFO L226 Difference]: Without dead ends: 7076 [2018-07-24 11:50:20,752 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 11:50:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7076 states. [2018-07-24 11:50:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7076 to 7076. [2018-07-24 11:50:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7076 states. [2018-07-24 11:50:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7076 states to 7076 states and 10949 transitions. [2018-07-24 11:50:21,107 INFO L78 Accepts]: Start accepts. Automaton has 7076 states and 10949 transitions. Word has length 95 [2018-07-24 11:50:21,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:50:21,110 INFO L471 AbstractCegarLoop]: Abstraction has 7076 states and 10949 transitions. [2018-07-24 11:50:21,110 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 11:50:21,110 INFO L276 IsEmpty]: Start isEmpty. Operand 7076 states and 10949 transitions. [2018-07-24 11:50:21,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-24 11:50:21,122 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:50:21,126 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] [2018-07-24 11:50:21,127 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:50:21,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1444143448, now seen corresponding path program 1 times [2018-07-24 11:50:21,128 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:50:21,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:21,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:50:21,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:21,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:50:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:50:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:50:21,562 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:50:21,562 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:50:21,562 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:50:21,563 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:50:21,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:50:21,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:50:21,564 INFO L87 Difference]: Start difference. First operand 7076 states and 10949 transitions. Second operand 5 states. [2018-07-24 11:50:39,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:50:39,379 INFO L93 Difference]: Finished difference Result 25223 states and 40343 transitions. [2018-07-24 11:50:39,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 11:50:39,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-07-24 11:50:39,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:50:39,481 INFO L225 Difference]: With dead ends: 25223 [2018-07-24 11:50:39,482 INFO L226 Difference]: Without dead ends: 18153 [2018-07-24 11:50:39,530 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:50:39,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18153 states. [2018-07-24 11:50:39,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18153 to 18092. [2018-07-24 11:50:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18092 states. [2018-07-24 11:50:39,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18092 states to 18092 states and 26038 transitions. [2018-07-24 11:50:39,983 INFO L78 Accepts]: Start accepts. Automaton has 18092 states and 26038 transitions. Word has length 139 [2018-07-24 11:50:39,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:50:39,983 INFO L471 AbstractCegarLoop]: Abstraction has 18092 states and 26038 transitions. [2018-07-24 11:50:39,983 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:50:39,984 INFO L276 IsEmpty]: Start isEmpty. Operand 18092 states and 26038 transitions. [2018-07-24 11:50:39,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-24 11:50:39,992 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:50:39,992 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:50:39,992 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:50:39,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1127803244, now seen corresponding path program 1 times [2018-07-24 11:50:39,993 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:50:39,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:39,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:50:39,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:39,994 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:50:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:50:40,293 WARN L169 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:50:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 24 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:50:40,711 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:50:40,711 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 11:50:40,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:50:40,729 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:50:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:50:40,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:50:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 11:50:41,144 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:50:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 24 proven. 77 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:50:41,635 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:50:41,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:50:41,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:50:41,636 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:50:41,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:50:41,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:50:41,636 INFO L87 Difference]: Start difference. First operand 18092 states and 26038 transitions. Second operand 5 states. [2018-07-24 11:50:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:50:54,177 INFO L93 Difference]: Finished difference Result 60513 states and 93328 transitions. [2018-07-24 11:50:54,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:50:54,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 196 [2018-07-24 11:50:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:50:54,407 INFO L225 Difference]: With dead ends: 60513 [2018-07-24 11:50:54,407 INFO L226 Difference]: Without dead ends: 42427 [2018-07-24 11:50:54,510 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 386 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:50:54,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42427 states. [2018-07-24 11:50:55,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42427 to 42249. [2018-07-24 11:50:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42249 states. [2018-07-24 11:50:55,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42249 states to 42249 states and 63128 transitions. [2018-07-24 11:50:55,626 INFO L78 Accepts]: Start accepts. Automaton has 42249 states and 63128 transitions. Word has length 196 [2018-07-24 11:50:55,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:50:55,627 INFO L471 AbstractCegarLoop]: Abstraction has 42249 states and 63128 transitions. [2018-07-24 11:50:55,627 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:50:55,627 INFO L276 IsEmpty]: Start isEmpty. Operand 42249 states and 63128 transitions. [2018-07-24 11:50:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-07-24 11:50:55,641 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:50:55,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:50:55,642 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:50:55,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1436461287, now seen corresponding path program 1 times [2018-07-24 11:50:55,643 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:50:55,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:55,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:50:55,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:50:55,644 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:50:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:50:55,980 WARN L169 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:50:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:50:56,808 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:50:56,808 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 11:50:56,809 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:50:56,809 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 11:50:56,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 11:50:56,810 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:50:56,810 INFO L87 Difference]: Start difference. First operand 42249 states and 63128 transitions. Second operand 6 states. [2018-07-24 11:51:10,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:51:10,292 INFO L93 Difference]: Finished difference Result 90169 states and 137117 transitions. [2018-07-24 11:51:10,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:51:10,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2018-07-24 11:51:10,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:51:10,837 INFO L225 Difference]: With dead ends: 90169 [2018-07-24 11:51:10,837 INFO L226 Difference]: Without dead ends: 47926 [2018-07-24 11:51:10,917 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 [2018-07-24 11:51:10,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47926 states. [2018-07-24 11:51:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47926 to 47722. [2018-07-24 11:51:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47722 states. [2018-07-24 11:51:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47722 states to 47722 states and 65217 transitions. [2018-07-24 11:51:11,739 INFO L78 Accepts]: Start accepts. Automaton has 47722 states and 65217 transitions. Word has length 224 [2018-07-24 11:51:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:51:11,739 INFO L471 AbstractCegarLoop]: Abstraction has 47722 states and 65217 transitions. [2018-07-24 11:51:11,740 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 11:51:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 47722 states and 65217 transitions. [2018-07-24 11:51:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-07-24 11:51:11,763 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:51:11,763 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:51:11,764 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:51:11,764 INFO L82 PathProgramCache]: Analyzing trace with hash 455308983, now seen corresponding path program 1 times [2018-07-24 11:51:11,764 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:51:11,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:11,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:11,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:11,771 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:51:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 44 proven. 148 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 11:51:12,277 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:51:12,278 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 11:51:12,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:12,296 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:51:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:12,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:51:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 11:51:12,856 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:51:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 115 proven. 81 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 11:51:13,882 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:51:13,882 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:51:13,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:13,906 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:51:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:14,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:51:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 255 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 11:51:14,254 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:51:14,971 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 115 proven. 81 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-07-24 11:51:14,973 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:51:14,974 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 14 [2018-07-24 11:51:14,974 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:51:14,978 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 11:51:14,978 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 11:51:14,979 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-07-24 11:51:14,979 INFO L87 Difference]: Start difference. First operand 47722 states and 65217 transitions. Second operand 8 states. [2018-07-24 11:51:42,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:51:42,637 INFO L93 Difference]: Finished difference Result 142774 states and 206359 transitions. [2018-07-24 11:51:42,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-24 11:51:42,652 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 272 [2018-07-24 11:51:42,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:51:42,896 INFO L225 Difference]: With dead ends: 142774 [2018-07-24 11:51:42,896 INFO L226 Difference]: Without dead ends: 79043 [2018-07-24 11:51:43,026 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1132 GetRequests, 1098 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2018-07-24 11:51:43,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79043 states. [2018-07-24 11:51:44,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79043 to 73186. [2018-07-24 11:51:44,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73186 states. [2018-07-24 11:51:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73186 states to 73186 states and 90411 transitions. [2018-07-24 11:51:44,451 INFO L78 Accepts]: Start accepts. Automaton has 73186 states and 90411 transitions. Word has length 272 [2018-07-24 11:51:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:51:44,451 INFO L471 AbstractCegarLoop]: Abstraction has 73186 states and 90411 transitions. [2018-07-24 11:51:44,451 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 11:51:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 73186 states and 90411 transitions. [2018-07-24 11:51:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-07-24 11:51:44,474 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:51:44,474 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 11:51:44,475 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:51:44,475 INFO L82 PathProgramCache]: Analyzing trace with hash -204962178, now seen corresponding path program 1 times [2018-07-24 11:51:44,475 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:51:44,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:44,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:44,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:51:44,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:51:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 11:51:45,066 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:51:45,066 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:51:45,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:45,079 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:51:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:45,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:51:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 11:51:45,989 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:51:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 11:51:46,177 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:51:46,177 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:51:46,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:51:46,197 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:51:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:51:46,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:51:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 11:51:46,578 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:51:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-07-24 11:51:46,718 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:51:46,718 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 11:51:46,718 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:51:46,719 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:51:46,720 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:51:46,720 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:51:46,720 INFO L87 Difference]: Start difference. First operand 73186 states and 90411 transitions. Second operand 9 states. [2018-07-24 11:52:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:52:01,261 INFO L93 Difference]: Finished difference Result 161184 states and 205183 transitions. [2018-07-24 11:52:01,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 11:52:01,262 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2018-07-24 11:52:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:52:01,566 INFO L225 Difference]: With dead ends: 161184 [2018-07-24 11:52:01,566 INFO L226 Difference]: Without dead ends: 88004 [2018-07-24 11:52:01,691 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1366 GetRequests, 1347 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-07-24 11:52:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88004 states. [2018-07-24 11:52:02,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88004 to 87759. [2018-07-24 11:52:02,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87759 states. [2018-07-24 11:52:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87759 states to 87759 states and 106761 transitions. [2018-07-24 11:52:03,202 INFO L78 Accepts]: Start accepts. Automaton has 87759 states and 106761 transitions. Word has length 337 [2018-07-24 11:52:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:52:03,203 INFO L471 AbstractCegarLoop]: Abstraction has 87759 states and 106761 transitions. [2018-07-24 11:52:03,203 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:52:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 87759 states and 106761 transitions. [2018-07-24 11:52:03,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-07-24 11:52:03,245 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:52:03,245 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:03,246 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:52:03,246 INFO L82 PathProgramCache]: Analyzing trace with hash -270978189, now seen corresponding path program 1 times [2018-07-24 11:52:03,251 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:52:03,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:03,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:52:03,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:03,253 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:52:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:52:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:52:04,043 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:52:04,043 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 11:52:04,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:52:04,055 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:52:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:52:04,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:52:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:52:04,726 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:52:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:52:06,105 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:52:06,105 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 11:52:06,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:52:06,126 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:52:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:52:06,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:52:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:52:06,550 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:52:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:52:06,988 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:52:06,988 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 11:52:06,988 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:52:06,989 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 11:52:06,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 11:52:06,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 11:52:06,989 INFO L87 Difference]: Start difference. First operand 87759 states and 106761 transitions. Second operand 9 states. [2018-07-24 11:52:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:52:22,951 INFO L93 Difference]: Finished difference Result 200983 states and 251306 transitions. [2018-07-24 11:52:22,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 11:52:22,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 373 [2018-07-24 11:52:22,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:52:23,277 INFO L225 Difference]: With dead ends: 200983 [2018-07-24 11:52:23,278 INFO L226 Difference]: Without dead ends: 113235 [2018-07-24 11:52:23,418 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1504 GetRequests, 1488 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2018-07-24 11:52:23,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113235 states. [2018-07-24 11:52:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113235 to 111222. [2018-07-24 11:52:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111222 states. [2018-07-24 11:52:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111222 states to 111222 states and 129892 transitions. [2018-07-24 11:52:25,200 INFO L78 Accepts]: Start accepts. Automaton has 111222 states and 129892 transitions. Word has length 373 [2018-07-24 11:52:25,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:52:25,201 INFO L471 AbstractCegarLoop]: Abstraction has 111222 states and 129892 transitions. [2018-07-24 11:52:25,201 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 11:52:25,202 INFO L276 IsEmpty]: Start isEmpty. Operand 111222 states and 129892 transitions. [2018-07-24 11:52:25,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-07-24 11:52:25,246 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:52:25,246 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:25,247 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:52:25,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1368112805, now seen corresponding path program 1 times [2018-07-24 11:52:25,247 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:52:25,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:25,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:52:25,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:25,250 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:52:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:52:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-07-24 11:52:25,661 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:52:25,661 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:52:25,661 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:52:25,662 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:52:25,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:52:25,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:52:25,662 INFO L87 Difference]: Start difference. First operand 111222 states and 129892 transitions. Second operand 3 states. [2018-07-24 11:52:36,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:52:36,287 INFO L93 Difference]: Finished difference Result 237232 states and 279799 transitions. [2018-07-24 11:52:36,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:52:36,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 389 [2018-07-24 11:52:36,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:52:36,614 INFO L225 Difference]: With dead ends: 237232 [2018-07-24 11:52:36,614 INFO L226 Difference]: Without dead ends: 126021 [2018-07-24 11:52:36,787 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 11:52:36,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126021 states. [2018-07-24 11:52:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126021 to 120473. [2018-07-24 11:52:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120473 states. [2018-07-24 11:52:38,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120473 states to 120473 states and 139869 transitions. [2018-07-24 11:52:38,699 INFO L78 Accepts]: Start accepts. Automaton has 120473 states and 139869 transitions. Word has length 389 [2018-07-24 11:52:38,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:52:38,700 INFO L471 AbstractCegarLoop]: Abstraction has 120473 states and 139869 transitions. [2018-07-24 11:52:38,700 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:52:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 120473 states and 139869 transitions. [2018-07-24 11:52:38,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2018-07-24 11:52:38,853 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:52:38,854 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:52:38,854 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:52:38,855 INFO L82 PathProgramCache]: Analyzing trace with hash 2048743020, now seen corresponding path program 1 times [2018-07-24 11:52:38,855 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:52:38,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:38,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:52:38,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:38,856 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:52:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:52:39,322 WARN L169 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:52:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 24 proven. 148 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:52:40,833 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:52:40,833 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 11:52:40,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:52:40,841 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:52:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:52:41,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:52:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 11:52:41,558 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:52:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 24 proven. 148 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:52:42,597 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:52:42,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:52:42,597 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:52:42,599 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:52:42,599 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:52:42,599 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:52:42,599 INFO L87 Difference]: Start difference. First operand 120473 states and 139869 transitions. Second operand 5 states. [2018-07-24 11:52:52,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:52:52,565 INFO L93 Difference]: Finished difference Result 263996 states and 310093 transitions. [2018-07-24 11:52:52,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:52:52,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 864 [2018-07-24 11:52:52,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:52:52,890 INFO L225 Difference]: With dead ends: 263996 [2018-07-24 11:52:52,890 INFO L226 Difference]: Without dead ends: 137074 [2018-07-24 11:52:53,029 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1737 GetRequests, 1722 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:52:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137074 states. [2018-07-24 11:52:54,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137074 to 132155. [2018-07-24 11:52:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132155 states. [2018-07-24 11:52:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132155 states to 132155 states and 150640 transitions. [2018-07-24 11:52:54,716 INFO L78 Accepts]: Start accepts. Automaton has 132155 states and 150640 transitions. Word has length 864 [2018-07-24 11:52:54,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:52:54,717 INFO L471 AbstractCegarLoop]: Abstraction has 132155 states and 150640 transitions. [2018-07-24 11:52:54,717 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:52:54,717 INFO L276 IsEmpty]: Start isEmpty. Operand 132155 states and 150640 transitions. [2018-07-24 11:52:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1184 [2018-07-24 11:52:54,858 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:52:54,859 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:52:54,859 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:52:54,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1111478059, now seen corresponding path program 1 times [2018-07-24 11:52:54,860 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:52:54,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:54,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:52:54,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:52:54,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:52:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 524 proven. 2 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2018-07-24 11:53:01,399 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:53:01,399 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:53:01,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:01,408 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:53:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:01,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:53:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 524 proven. 2 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2018-07-24 11:53:03,773 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:53:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 524 proven. 2 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2018-07-24 11:53:06,045 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:53:06,046 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 11:53:06,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:53:06,061 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:53:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:53:07,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:53:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 524 proven. 2 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2018-07-24 11:53:08,335 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:53:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 524 proven. 2 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2018-07-24 11:53:11,048 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:53:11,049 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 6, 5, 5] total 21 [2018-07-24 11:53:11,049 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:53:11,051 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 11:53:11,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 11:53:11,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2018-07-24 11:53:11,052 INFO L87 Difference]: Start difference. First operand 132155 states and 150640 transitions. Second operand 14 states. Received shutdown request... [2018-07-24 11:53:13,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 11:53:13,510 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:53:13,516 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:53:13,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:53:13 BoogieIcfgContainer [2018-07-24 11:53:13,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:53:13,517 INFO L168 Benchmark]: Toolchain (without parser) took 225195.23 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -768.9 MB). Peak memory consumption was 980.2 MB. Max. memory is 7.1 GB. [2018-07-24 11:53:13,518 INFO L168 Benchmark]: CDTParser took 0.22 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 11:53:13,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2548.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:53:13,520 INFO L168 Benchmark]: Boogie Procedure Inliner took 333.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:53:13,521 INFO L168 Benchmark]: Boogie Preprocessor took 1081.18 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 909.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-07-24 11:53:13,521 INFO L168 Benchmark]: RCFGBuilder took 11501.45 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 169.9 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -151.4 MB). Peak memory consumption was 742.2 MB. Max. memory is 7.1 GB. [2018-07-24 11:53:13,522 INFO L168 Benchmark]: TraceAbstraction took 209721.70 ms. Allocated memory was 2.6 GB in the beginning and 3.3 GB in the end (delta: 669.5 MB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 267.2 MB). Peak memory consumption was 936.7 MB. Max. memory is 7.1 GB. [2018-07-24 11:53:13,528 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2548.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 333.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1081.18 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 909.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11501.45 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 169.9 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -151.4 MB). Peak memory consumption was 742.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209721.70 ms. Allocated memory was 2.6 GB in the beginning and 3.3 GB in the end (delta: 669.5 MB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 267.2 MB). Peak memory consumption was 936.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was constructing difference of abstraction (132155states) and interpolant automaton (currently 18 states, 14 states before enhancement), while ReachableStatesComputation was computing reachable states (1055 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 209.6s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 163.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2891 SDtfs, 37058 SDslu, 2287 SDs, 0 SdLazy, 69856 SolverSat, 17402 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 132.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10952 GetRequests, 10787 SyntacticMatches, 28 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132155occurred in iteration=11, 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: 11.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 19060 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 23.1s InterpolantComputationTime, 9574 NumberOfCodeBlocks, 9574 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 14932 ConstructedInterpolants, 0 QuantifiedInterpolants, 55373842 SizeOfPredicates, 2 NumberOfNonLiveVariables, 8030 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 32 InterpolantComputations, 8 PerfectInterpolantSequences, 8567/9361 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/Problem12_label20_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-53-13-542.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label20_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-53-13-542.csv Completed graceful shutdown