java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:47:13,172 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:47:13,174 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:47:13,189 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:47:13,190 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:47:13,193 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:47:13,195 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:47:13,197 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:47:13,200 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:47:13,201 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:47:13,203 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:47:13,203 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:47:13,204 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:47:13,205 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:47:13,214 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:47:13,216 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:47:13,216 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:47:13,219 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:47:13,223 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:47:13,226 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:47:13,229 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:47:13,230 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:47:13,234 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:47:13,234 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:47:13,234 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:47:13,236 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:47:13,236 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:47:13,237 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:47:13,238 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:47:13,239 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:47:13,242 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:47:13,243 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:47:13,244 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:47:13,244 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:47:13,246 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:47:13,247 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:47:13,248 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:47:13,269 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:47:13,269 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:47:13,270 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:47:13,270 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:47:13,270 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:47:13,271 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:47:13,271 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:47:13,271 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:47:13,271 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:47:13,271 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:47:13,272 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:47:13,272 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:47:13,272 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:47:13,273 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:47:13,273 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:47:13,273 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:47:13,273 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:47:13,273 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:47:13,274 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:47:13,274 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:47:13,274 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:47:13,274 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:47:13,274 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:47:13,274 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:47:13,275 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:47:13,275 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:47:13,275 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:47:13,275 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:47:13,275 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:47:13,276 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:47:13,276 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:47:13,276 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:47:13,276 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:47:13,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:47:13,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:47:13,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:47:13,349 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:47:13,350 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:47:13,351 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label36_true-unreach-call.c [2018-09-10 11:47:13,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/774af8409/928560c635984ebeaf4cd4182a16b137/FLAG09635ddb9 [2018-09-10 11:47:14,157 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:47:14,158 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label36_true-unreach-call.c [2018-09-10 11:47:14,189 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/774af8409/928560c635984ebeaf4cd4182a16b137/FLAG09635ddb9 [2018-09-10 11:47:14,205 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/774af8409/928560c635984ebeaf4cd4182a16b137 [2018-09-10 11:47:14,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:47:14,226 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:47:14,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:47:14,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:47:14,236 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:47:14,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:47:14" (1/1) ... [2018-09-10 11:47:14,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec3b694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:14, skipping insertion in model container [2018-09-10 11:47:14,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:47:14" (1/1) ... [2018-09-10 11:47:14,582 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:47:15,662 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:47:15,690 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:47:16,605 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:47:16,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:16 WrapperNode [2018-09-10 11:47:16,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:47:16,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:47:16,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:47:16,874 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:47:16,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:16" (1/1) ... [2018-09-10 11:47:16,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:16" (1/1) ... [2018-09-10 11:47:17,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:47:17,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:47:17,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:47:17,094 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:47:17,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:16" (1/1) ... [2018-09-10 11:47:17,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:16" (1/1) ... [2018-09-10 11:47:17,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:16" (1/1) ... [2018-09-10 11:47:17,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:16" (1/1) ... [2018-09-10 11:47:17,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:16" (1/1) ... [2018-09-10 11:47:17,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:16" (1/1) ... [2018-09-10 11:47:17,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:16" (1/1) ... [2018-09-10 11:47:17,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:47:17,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:47:17,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:47:17,986 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:47:17,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:47:18,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:47:18,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:47:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:47:18,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:47:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:47:18,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:47:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:47:18,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:47:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:47:18,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:47:18,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:47:18,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:47:18,066 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:47:18,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:47:31,758 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:47:31,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:47:31 BoogieIcfgContainer [2018-09-10 11:47:31,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:47:31,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:47:31,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:47:31,763 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:47:31,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:47:14" (1/3) ... [2018-09-10 11:47:31,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2136787a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:47:31, skipping insertion in model container [2018-09-10 11:47:31,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:47:16" (2/3) ... [2018-09-10 11:47:31,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2136787a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:47:31, skipping insertion in model container [2018-09-10 11:47:31,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:47:31" (3/3) ... [2018-09-10 11:47:31,767 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label36_true-unreach-call.c [2018-09-10 11:47:31,776 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:47:31,786 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:47:31,846 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:47:31,847 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:47:31,847 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:47:31,848 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:47:31,848 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:47:31,848 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:47:31,848 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:47:31,848 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:47:31,848 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:47:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-10 11:47:31,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-10 11:47:31,898 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:31,899 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:47:31,900 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:47:31,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1489180692, now seen corresponding path program 1 times [2018-09-10 11:47:31,909 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:31,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:31,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:31,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:31,963 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:47:32,607 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:47:32,608 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:47:32,608 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:47:32,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:47:32,630 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:47:32,631 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:47:32,634 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-09-10 11:47:45,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:45,169 INFO L93 Difference]: Finished difference Result 3218 states and 6239 transitions. [2018-09-10 11:47:45,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:47:45,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-09-10 11:47:45,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:45,221 INFO L225 Difference]: With dead ends: 3218 [2018-09-10 11:47:45,221 INFO L226 Difference]: Without dead ends: 2372 [2018-09-10 11:47:45,231 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:47:45,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2018-09-10 11:47:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2372. [2018-09-10 11:47:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2372 states. [2018-09-10 11:47:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 4546 transitions. [2018-09-10 11:47:45,426 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 4546 transitions. Word has length 64 [2018-09-10 11:47:45,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:45,427 INFO L480 AbstractCegarLoop]: Abstraction has 2372 states and 4546 transitions. [2018-09-10 11:47:45,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:47:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 4546 transitions. [2018-09-10 11:47:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-10 11:47:45,444 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:45,444 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:47:45,444 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:47:45,445 INFO L82 PathProgramCache]: Analyzing trace with hash -600570014, now seen corresponding path program 1 times [2018-09-10 11:47:45,445 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:45,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:45,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:45,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:45,447 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:47:45,833 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:47:45,833 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:47:45,833 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:47:45,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:47:45,836 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:47:45,836 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:47:45,836 INFO L87 Difference]: Start difference. First operand 2372 states and 4546 transitions. Second operand 6 states. [2018-09-10 11:47:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:58,256 INFO L93 Difference]: Finished difference Result 7150 states and 13881 transitions. [2018-09-10 11:47:58,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:47:58,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-09-10 11:47:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:58,292 INFO L225 Difference]: With dead ends: 7150 [2018-09-10 11:47:58,293 INFO L226 Difference]: Without dead ends: 4784 [2018-09-10 11:47:58,301 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:47:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4784 states. [2018-09-10 11:47:58,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4784 to 4739. [2018-09-10 11:47:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4739 states. [2018-09-10 11:47:58,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4739 states to 4739 states and 8782 transitions. [2018-09-10 11:47:58,440 INFO L78 Accepts]: Start accepts. Automaton has 4739 states and 8782 transitions. Word has length 178 [2018-09-10 11:47:58,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:58,441 INFO L480 AbstractCegarLoop]: Abstraction has 4739 states and 8782 transitions. [2018-09-10 11:47:58,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:47:58,441 INFO L276 IsEmpty]: Start isEmpty. Operand 4739 states and 8782 transitions. [2018-09-10 11:47:58,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-09-10 11:47:58,446 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:58,447 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:47:58,447 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:47:58,447 INFO L82 PathProgramCache]: Analyzing trace with hash 966392405, now seen corresponding path program 1 times [2018-09-10 11:47:58,447 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:58,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:58,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:58,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:58,449 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:47:58,709 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:47:58,709 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:47:58,709 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:47:58,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:47:58,710 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:47:58,711 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:47:58,711 INFO L87 Difference]: Start difference. First operand 4739 states and 8782 transitions. Second operand 5 states. [2018-09-10 11:48:21,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:21,198 INFO L93 Difference]: Finished difference Result 15900 states and 29774 transitions. [2018-09-10 11:48:21,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:48:21,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2018-09-10 11:48:21,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:21,266 INFO L225 Difference]: With dead ends: 15900 [2018-09-10 11:48:21,266 INFO L226 Difference]: Without dead ends: 11167 [2018-09-10 11:48:21,293 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:48:21,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11167 states. [2018-09-10 11:48:21,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11167 to 11065. [2018-09-10 11:48:21,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11065 states. [2018-09-10 11:48:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11065 states to 11065 states and 18192 transitions. [2018-09-10 11:48:21,625 INFO L78 Accepts]: Start accepts. Automaton has 11065 states and 18192 transitions. Word has length 205 [2018-09-10 11:48:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:21,626 INFO L480 AbstractCegarLoop]: Abstraction has 11065 states and 18192 transitions. [2018-09-10 11:48:21,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:48:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 11065 states and 18192 transitions. [2018-09-10 11:48:21,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-09-10 11:48:21,632 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:21,633 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:48:21,633 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:48:21,633 INFO L82 PathProgramCache]: Analyzing trace with hash 3518149, now seen corresponding path program 1 times [2018-09-10 11:48:21,633 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:21,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:21,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:21,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:21,635 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:48:22,037 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:48:22,038 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:48:22,038 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:22,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:48:22,039 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:48:22,039 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:48:22,039 INFO L87 Difference]: Start difference. First operand 11065 states and 18192 transitions. Second operand 4 states. [2018-09-10 11:48:34,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:34,864 INFO L93 Difference]: Finished difference Result 29059 states and 48139 transitions. [2018-09-10 11:48:34,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:48:34,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2018-09-10 11:48:34,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:34,941 INFO L225 Difference]: With dead ends: 29059 [2018-09-10 11:48:34,942 INFO L226 Difference]: Without dead ends: 18000 [2018-09-10 11:48:34,987 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:48:35,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18000 states. [2018-09-10 11:48:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18000 to 16442. [2018-09-10 11:48:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16442 states. [2018-09-10 11:48:35,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16442 states to 16442 states and 24342 transitions. [2018-09-10 11:48:35,363 INFO L78 Accepts]: Start accepts. Automaton has 16442 states and 24342 transitions. Word has length 213 [2018-09-10 11:48:35,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:35,364 INFO L480 AbstractCegarLoop]: Abstraction has 16442 states and 24342 transitions. [2018-09-10 11:48:35,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:48:35,364 INFO L276 IsEmpty]: Start isEmpty. Operand 16442 states and 24342 transitions. [2018-09-10 11:48:35,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-09-10 11:48:35,384 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:35,384 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:48:35,385 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:48:35,385 INFO L82 PathProgramCache]: Analyzing trace with hash 531831352, now seen corresponding path program 1 times [2018-09-10 11:48:35,385 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:35,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:35,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:35,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:35,387 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:35,713 WARN L175 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:48:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 114 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:48:36,173 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:48:36,173 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:48:36,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:36,196 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:48:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:36,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:48:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-09-10 11:48:36,858 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:48:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 114 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:48:37,888 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:48:37,888 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 11:48:37,888 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:37,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:48:37,889 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:48:37,890 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:48:37,890 INFO L87 Difference]: Start difference. First operand 16442 states and 24342 transitions. Second operand 5 states. [2018-09-10 11:48:48,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:48,482 INFO L93 Difference]: Finished difference Result 39643 states and 60443 transitions. [2018-09-10 11:48:48,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:48:48,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2018-09-10 11:48:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:48,612 INFO L225 Difference]: With dead ends: 39643 [2018-09-10 11:48:48,612 INFO L226 Difference]: Without dead ends: 23207 [2018-09-10 11:48:48,689 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 658 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:48:48,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23207 states. [2018-09-10 11:48:49,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23207 to 23064. [2018-09-10 11:48:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23064 states. [2018-09-10 11:48:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23064 states to 23064 states and 33243 transitions. [2018-09-10 11:48:49,311 INFO L78 Accepts]: Start accepts. Automaton has 23064 states and 33243 transitions. Word has length 332 [2018-09-10 11:48:49,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:49,312 INFO L480 AbstractCegarLoop]: Abstraction has 23064 states and 33243 transitions. [2018-09-10 11:48:49,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:48:49,312 INFO L276 IsEmpty]: Start isEmpty. Operand 23064 states and 33243 transitions. [2018-09-10 11:48:49,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-09-10 11:48:49,337 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:49,337 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:48:49,338 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:48:49,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1941929417, now seen corresponding path program 1 times [2018-09-10 11:48:49,338 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:49,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:49,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:49,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:49,340 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:49,650 WARN L175 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:48:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 114 proven. 95 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:48:50,091 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:48:50,091 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:48:50,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:50,107 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:48:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:50,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:48:50,731 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-09-10 11:48:50,732 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:48:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 114 proven. 95 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:48:51,199 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:48:51,199 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-10 11:48:51,199 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:51,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:48:51,200 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:48:51,200 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:48:51,201 INFO L87 Difference]: Start difference. First operand 23064 states and 33243 transitions. Second operand 5 states. [2018-09-10 11:49:00,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:00,028 INFO L93 Difference]: Finished difference Result 46418 states and 68079 transitions. [2018-09-10 11:49:00,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:49:00,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 343 [2018-09-10 11:49:00,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:00,126 INFO L225 Difference]: With dead ends: 46418 [2018-09-10 11:49:00,126 INFO L226 Difference]: Without dead ends: 23360 [2018-09-10 11:49:00,164 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 680 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-10 11:49:00,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23360 states. [2018-09-10 11:49:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23360 to 22431. [2018-09-10 11:49:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22431 states. [2018-09-10 11:49:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22431 states to 22431 states and 27467 transitions. [2018-09-10 11:49:00,573 INFO L78 Accepts]: Start accepts. Automaton has 22431 states and 27467 transitions. Word has length 343 [2018-09-10 11:49:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:49:00,573 INFO L480 AbstractCegarLoop]: Abstraction has 22431 states and 27467 transitions. [2018-09-10 11:49:00,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:49:00,580 INFO L276 IsEmpty]: Start isEmpty. Operand 22431 states and 27467 transitions. [2018-09-10 11:49:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-09-10 11:49:00,607 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:49:00,608 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:49:00,608 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:49:00,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1043718771, now seen corresponding path program 1 times [2018-09-10 11:49:00,608 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:49:00,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:00,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:00,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:00,611 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:49:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 117 proven. 137 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-10 11:49:01,314 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:01,314 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:49:01,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:01,331 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:01,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-09-10 11:49:01,976 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-09-10 11:49:02,374 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:49:02,375 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2018-09-10 11:49:02,375 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:49:02,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:49:02,376 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:49:02,376 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:49:02,377 INFO L87 Difference]: Start difference. First operand 22431 states and 27467 transitions. Second operand 5 states. [2018-09-10 11:49:11,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:11,735 INFO L93 Difference]: Finished difference Result 64691 states and 81334 transitions. [2018-09-10 11:49:11,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:49:11,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 389 [2018-09-10 11:49:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:11,856 INFO L225 Difference]: With dead ends: 64691 [2018-09-10 11:49:11,856 INFO L226 Difference]: Without dead ends: 42266 [2018-09-10 11:49:11,897 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 775 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:49:11,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42266 states. [2018-09-10 11:49:12,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42266 to 41289. [2018-09-10 11:49:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41289 states. [2018-09-10 11:49:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41289 states to 41289 states and 49136 transitions. [2018-09-10 11:49:12,818 INFO L78 Accepts]: Start accepts. Automaton has 41289 states and 49136 transitions. Word has length 389 [2018-09-10 11:49:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:49:12,819 INFO L480 AbstractCegarLoop]: Abstraction has 41289 states and 49136 transitions. [2018-09-10 11:49:12,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:49:12,820 INFO L276 IsEmpty]: Start isEmpty. Operand 41289 states and 49136 transitions. [2018-09-10 11:49:12,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2018-09-10 11:49:12,864 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:49:12,865 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:49:12,865 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:49:12,865 INFO L82 PathProgramCache]: Analyzing trace with hash -90527652, now seen corresponding path program 1 times [2018-09-10 11:49:12,866 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:49:12,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:12,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:12,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:12,867 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:49:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 9 proven. 108 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-09-10 11:49:13,486 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:13,486 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:49:13,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:13,493 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:13,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-09-10 11:49:14,060 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:14,302 WARN L175 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2018-09-10 11:49:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 114 proven. 144 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:49:15,304 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:49:15,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-10 11:49:15,305 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:49:15,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:49:15,305 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:49:15,306 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:49:15,306 INFO L87 Difference]: Start difference. First operand 41289 states and 49136 transitions. Second operand 5 states. [2018-09-10 11:49:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:27,788 INFO L93 Difference]: Finished difference Result 94258 states and 112777 transitions. [2018-09-10 11:49:27,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-10 11:49:27,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 556 [2018-09-10 11:49:27,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:27,933 INFO L225 Difference]: With dead ends: 94258 [2018-09-10 11:49:27,933 INFO L226 Difference]: Without dead ends: 52975 [2018-09-10 11:49:28,313 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1128 GetRequests, 1112 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-09-10 11:49:28,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52975 states. [2018-09-10 11:49:28,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52975 to 51141. [2018-09-10 11:49:28,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51141 states. [2018-09-10 11:49:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51141 states to 51141 states and 60320 transitions. [2018-09-10 11:49:29,002 INFO L78 Accepts]: Start accepts. Automaton has 51141 states and 60320 transitions. Word has length 556 [2018-09-10 11:49:29,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:49:29,003 INFO L480 AbstractCegarLoop]: Abstraction has 51141 states and 60320 transitions. [2018-09-10 11:49:29,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:49:29,003 INFO L276 IsEmpty]: Start isEmpty. Operand 51141 states and 60320 transitions. [2018-09-10 11:49:29,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-09-10 11:49:29,057 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:49:29,058 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:49:29,058 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:49:29,058 INFO L82 PathProgramCache]: Analyzing trace with hash 964072088, now seen corresponding path program 1 times [2018-09-10 11:49:29,058 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:49:29,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:29,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:29,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:29,059 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:49:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 326 proven. 176 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-09-10 11:49:29,777 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:29,777 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:49:29,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:29,789 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:29,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 633 proven. 2 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-09-10 11:49:30,253 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 326 proven. 176 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-09-10 11:49:30,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:30,548 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:49:30,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:30,564 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:31,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:31,563 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 633 proven. 2 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-09-10 11:49:31,563 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 326 proven. 176 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-09-10 11:49:31,866 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:49:31,867 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 14 [2018-09-10 11:49:31,867 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:49:31,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:49:31,871 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:49:31,871 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:49:31,871 INFO L87 Difference]: Start difference. First operand 51141 states and 60320 transitions. Second operand 9 states. [2018-09-10 11:49:49,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:49,824 INFO L93 Difference]: Finished difference Result 151312 states and 191098 transitions. [2018-09-10 11:49:49,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-10 11:49:49,825 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 586 [2018-09-10 11:49:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:50,206 INFO L225 Difference]: With dead ends: 151312 [2018-09-10 11:49:50,206 INFO L226 Difference]: Without dead ends: 100177 [2018-09-10 11:49:50,357 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2360 GetRequests, 2340 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2018-09-10 11:49:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100177 states. [2018-09-10 11:49:51,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100177 to 98740. [2018-09-10 11:49:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98740 states. [2018-09-10 11:49:52,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98740 states to 98740 states and 119689 transitions. [2018-09-10 11:49:52,088 INFO L78 Accepts]: Start accepts. Automaton has 98740 states and 119689 transitions. Word has length 586 [2018-09-10 11:49:52,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:49:52,089 INFO L480 AbstractCegarLoop]: Abstraction has 98740 states and 119689 transitions. [2018-09-10 11:49:52,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:49:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 98740 states and 119689 transitions. [2018-09-10 11:49:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2018-09-10 11:49:52,190 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:49:52,190 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:49:52,190 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:49:52,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2033000784, now seen corresponding path program 1 times [2018-09-10 11:49:52,191 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:49:52,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:52,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:52,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:52,192 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:49:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 436 proven. 106 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2018-09-10 11:49:53,320 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:53,320 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:49:53,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:53,328 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:53,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 715 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-10 11:49:53,732 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 436 proven. 106 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2018-09-10 11:49:54,033 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:54,034 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:49:54,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:54,051 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:54,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 715 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-10 11:49:55,454 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 436 proven. 106 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2018-09-10 11:49:55,827 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:49:55,828 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-09-10 11:49:55,828 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:49:55,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:49:55,829 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:49:55,829 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2018-09-10 11:49:55,829 INFO L87 Difference]: Start difference. First operand 98740 states and 119689 transitions. Second operand 9 states. [2018-09-10 11:50:31,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:50:31,934 INFO L93 Difference]: Finished difference Result 270417 states and 394009 transitions. [2018-09-10 11:50:31,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-10 11:50:31,934 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 590 [2018-09-10 11:50:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:50:32,965 INFO L225 Difference]: With dead ends: 270417 [2018-09-10 11:50:32,966 INFO L226 Difference]: Without dead ends: 172451 [2018-09-10 11:50:33,466 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2431 GetRequests, 2381 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=435, Invalid=2115, Unknown=0, NotChecked=0, Total=2550 [2018-09-10 11:50:33,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172451 states. [2018-09-10 11:50:36,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172451 to 165457. [2018-09-10 11:50:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165457 states. [2018-09-10 11:50:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165457 states to 165457 states and 207656 transitions. [2018-09-10 11:50:37,293 INFO L78 Accepts]: Start accepts. Automaton has 165457 states and 207656 transitions. Word has length 590 [2018-09-10 11:50:37,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:50:37,294 INFO L480 AbstractCegarLoop]: Abstraction has 165457 states and 207656 transitions. [2018-09-10 11:50:37,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:50:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 165457 states and 207656 transitions. [2018-09-10 11:50:37,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2018-09-10 11:50:37,408 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:50:37,409 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:50:37,409 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:50:37,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1859618501, now seen corresponding path program 1 times [2018-09-10 11:50:37,410 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:50:37,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:37,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:37,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:50:37,414 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:50:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:50:38,878 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:50:38,878 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 11:50:38,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:38,886 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:50:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:39,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:50:39,329 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:50:39,329 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:50:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:50:39,861 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:50:39,861 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-10 11:50:39,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:50:39,877 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:50:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:50:40,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:50:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:50:41,419 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:50:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 412 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 11:50:41,919 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:50:41,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 12 [2018-09-10 11:50:41,920 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:50:41,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:50:41,921 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:50:41,921 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:50:41,922 INFO L87 Difference]: Start difference. First operand 165457 states and 207656 transitions. Second operand 6 states. [2018-09-10 11:51:01,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:51:01,290 INFO L93 Difference]: Finished difference Result 397545 states and 519152 transitions. [2018-09-10 11:51:01,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 11:51:01,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 601 [2018-09-10 11:51:01,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:51:02,065 INFO L225 Difference]: With dead ends: 397545 [2018-09-10 11:51:02,065 INFO L226 Difference]: Without dead ends: 232862 [2018-09-10 11:51:03,688 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2419 GetRequests, 2399 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2018-09-10 11:51:03,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232862 states. Received shutdown request... [2018-09-10 11:51:04,061 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:51:04,066 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:51:04,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:51:04 BoogieIcfgContainer [2018-09-10 11:51:04,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:51:04,068 INFO L168 Benchmark]: Toolchain (without parser) took 229846.75 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -559.2 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-09-10 11:51:04,069 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:51:04,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2645.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:51:04,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 219.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2018-09-10 11:51:04,071 INFO L168 Benchmark]: Boogie Preprocessor took 891.56 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 928.5 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. [2018-09-10 11:51:04,072 INFO L168 Benchmark]: RCFGBuilder took 13773.55 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 142.1 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -124.0 MB). Peak memory consumption was 724.1 MB. Max. memory is 7.1 GB. [2018-09-10 11:51:04,073 INFO L168 Benchmark]: TraceAbstraction took 212307.16 ms. Allocated memory was 2.6 GB in the beginning and 3.5 GB in the end (delta: 920.1 MB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 470.1 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-09-10 11:51:04,078 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2645.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 219.43 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 891.56 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 928.5 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 13773.55 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 142.1 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -124.0 MB). Peak memory consumption was 724.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212307.16 ms. Allocated memory was 2.6 GB in the beginning and 3.5 GB in the end (delta: 920.1 MB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 470.1 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 183]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 183). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 212.2s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 180.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2542 SDtfs, 42604 SDslu, 2378 SDs, 0 SdLazy, 78023 SolverSat, 20264 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 144.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10524 GetRequests, 10356 SyntacticMatches, 24 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165457occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 14019 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 9231 NumberOfCodeBlocks, 9231 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 14374 ConstructedInterpolants, 0 QuantifiedInterpolants, 20268935 SizeOfPredicates, 13 NumberOfNonLiveVariables, 7798 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 31 InterpolantComputations, 9 PerfectInterpolantSequences, 12485/14096 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_label36_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-51-04-096.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label36_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-51-04-096.csv Completed graceful shutdown