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/Problem03_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 10:29:30,445 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 10:29:30,448 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 10:29:30,460 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 10:29:30,460 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 10:29:30,461 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 10:29:30,463 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 10:29:30,464 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 10:29:30,466 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 10:29:30,467 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 10:29:30,468 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 10:29:30,468 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 10:29:30,469 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 10:29:30,471 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 10:29:30,472 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 10:29:30,473 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 10:29:30,474 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 10:29:30,476 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 10:29:30,478 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 10:29:30,479 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 10:29:30,480 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 10:29:30,482 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 10:29:30,484 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 10:29:30,485 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 10:29:30,485 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 10:29:30,488 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 10:29:30,490 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 10:29:30,491 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 10:29:30,492 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 10:29:30,494 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 10:29:30,494 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 10:29:30,495 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 10:29:30,495 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 10:29:30,495 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 10:29:30,498 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 10:29:30,499 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 10:29:30,499 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 10:29:30,536 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 10:29:30,536 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 10:29:30,537 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 10:29:30,537 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 10:29:30,537 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 10:29:30,537 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 10:29:30,538 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 10:29:30,538 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 10:29:30,538 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 10:29:30,538 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 10:29:30,538 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 10:29:30,539 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 10:29:30,539 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 10:29:30,539 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 10:29:30,540 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 10:29:30,540 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 10:29:30,540 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 10:29:30,540 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 10:29:30,540 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 10:29:30,541 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 10:29:30,541 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 10:29:30,541 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 10:29:30,541 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 10:29:30,541 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:29:30,542 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 10:29:30,542 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 10:29:30,542 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 10:29:30,542 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 10:29:30,542 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 10:29:30,543 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 10:29:30,543 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 10:29:30,543 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 10:29:30,543 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 10:29:30,588 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 10:29:30,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 10:29:30,613 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 10:29:30,615 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 10:29:30,615 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 10:29:30,616 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label47_true-unreach-call.c [2018-09-10 10:29:30,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57c271e04/b86319c6fbf247dfa8eb322adc808501/FLAG397743c39 [2018-09-10 10:29:31,362 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 10:29:31,363 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label47_true-unreach-call.c [2018-09-10 10:29:31,392 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57c271e04/b86319c6fbf247dfa8eb322adc808501/FLAG397743c39 [2018-09-10 10:29:31,409 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57c271e04/b86319c6fbf247dfa8eb322adc808501 [2018-09-10 10:29:31,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 10:29:31,425 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 10:29:31,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 10:29:31,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 10:29:31,434 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 10:29:31,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:29:31" (1/1) ... [2018-09-10 10:29:31,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13303bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:31, skipping insertion in model container [2018-09-10 10:29:31,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:29:31" (1/1) ... [2018-09-10 10:29:31,744 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 10:29:32,220 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:29:32,240 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 10:29:32,487 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:29:32,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:32 WrapperNode [2018-09-10 10:29:32,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 10:29:32,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 10:29:32,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 10:29:32,556 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 10:29:32,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:32" (1/1) ... [2018-09-10 10:29:32,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:32" (1/1) ... [2018-09-10 10:29:32,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 10:29:32,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 10:29:32,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 10:29:32,740 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 10:29:32,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:32" (1/1) ... [2018-09-10 10:29:32,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:32" (1/1) ... [2018-09-10 10:29:32,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:32" (1/1) ... [2018-09-10 10:29:32,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:32" (1/1) ... [2018-09-10 10:29:33,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:32" (1/1) ... [2018-09-10 10:29:33,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:32" (1/1) ... [2018-09-10 10:29:33,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:32" (1/1) ... [2018-09-10 10:29:33,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 10:29:33,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 10:29:33,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 10:29:33,139 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 10:29:33,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:32" (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 10:29:33,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 10:29:33,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 10:29:33,217 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 10:29:33,217 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 10:29:33,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 10:29:33,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 10:29:33,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 10:29:33,218 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 10:29:37,988 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 10:29:37,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:29:37 BoogieIcfgContainer [2018-09-10 10:29:37,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 10:29:37,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 10:29:37,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 10:29:37,994 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 10:29:37,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:29:31" (1/3) ... [2018-09-10 10:29:37,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a82771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:29:37, skipping insertion in model container [2018-09-10 10:29:37,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:29:32" (2/3) ... [2018-09-10 10:29:37,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a82771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:29:37, skipping insertion in model container [2018-09-10 10:29:37,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:29:37" (3/3) ... [2018-09-10 10:29:37,998 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label47_true-unreach-call.c [2018-09-10 10:29:38,007 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 10:29:38,016 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 10:29:38,071 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 10:29:38,072 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 10:29:38,073 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 10:29:38,073 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 10:29:38,073 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 10:29:38,073 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 10:29:38,073 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 10:29:38,074 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 10:29:38,074 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 10:29:38,105 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-09-10 10:29:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-10 10:29:38,128 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:38,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:29:38,130 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 10:29:38,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1857262073, now seen corresponding path program 1 times [2018-09-10 10:29:38,140 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:38,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:38,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:38,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:38,189 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:39,179 WARN L175 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:29:39,386 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 10:29:39,389 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:29:39,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 10:29:39,389 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:29:39,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:29:39,409 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:29:39,410 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:29:39,413 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-09-10 10:29:41,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:41,547 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-09-10 10:29:41,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:29:41,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2018-09-10 10:29:41,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:41,573 INFO L225 Difference]: With dead ends: 848 [2018-09-10 10:29:41,573 INFO L226 Difference]: Without dead ends: 534 [2018-09-10 10:29:41,582 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:29:41,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-09-10 10:29:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-09-10 10:29:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-09-10 10:29:41,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-09-10 10:29:41,697 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 204 [2018-09-10 10:29:41,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:41,702 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-09-10 10:29:41,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:29:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-09-10 10:29:41,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-09-10 10:29:41,721 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:41,722 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:29:41,722 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 10:29:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1296930173, now seen corresponding path program 1 times [2018-09-10 10:29:41,723 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:41,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:41,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:41,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:41,727 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:42,321 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:29:42,321 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 10:29:42,321 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:29:42,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:29:42,323 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:29:42,323 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:29:42,324 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-09-10 10:29:44,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:44,509 INFO L93 Difference]: Finished difference Result 1481 states and 2487 transitions. [2018-09-10 10:29:44,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:29:44,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2018-09-10 10:29:44,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:44,517 INFO L225 Difference]: With dead ends: 1481 [2018-09-10 10:29:44,517 INFO L226 Difference]: Without dead ends: 955 [2018-09-10 10:29:44,523 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:29:44,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2018-09-10 10:29:44,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 954. [2018-09-10 10:29:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 954 states. [2018-09-10 10:29:44,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1475 transitions. [2018-09-10 10:29:44,569 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1475 transitions. Word has length 217 [2018-09-10 10:29:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:44,570 INFO L480 AbstractCegarLoop]: Abstraction has 954 states and 1475 transitions. [2018-09-10 10:29:44,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:29:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1475 transitions. [2018-09-10 10:29:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-10 10:29:44,576 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:44,577 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-09-10 10:29:44,577 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 10:29:44,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1231516388, now seen corresponding path program 1 times [2018-09-10 10:29:44,578 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:44,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:44,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:44,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:44,579 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:44,842 WARN L175 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:29:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:45,045 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:45,045 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 10:29:45,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:45,066 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:29:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:45,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:45,887 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:29:46,088 WARN L175 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-10 10:29:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:46,741 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:46,741 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:29:46,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:46,769 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:29:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:47,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:47,412 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:29:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:47,644 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:29:47,644 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 14 [2018-09-10 10:29:47,644 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:29:47,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-10 10:29:47,646 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-10 10:29:47,646 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-09-10 10:29:47,647 INFO L87 Difference]: Start difference. First operand 954 states and 1475 transitions. Second operand 8 states. [2018-09-10 10:29:53,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:53,932 INFO L93 Difference]: Finished difference Result 3681 states and 6137 transitions. [2018-09-10 10:29:53,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 10:29:53,934 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228 [2018-09-10 10:29:53,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:53,965 INFO L225 Difference]: With dead ends: 3681 [2018-09-10 10:29:53,965 INFO L226 Difference]: Without dead ends: 2733 [2018-09-10 10:29:53,975 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 905 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2018-09-10 10:29:53,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2018-09-10 10:29:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2666. [2018-09-10 10:29:54,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2666 states. [2018-09-10 10:29:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3830 transitions. [2018-09-10 10:29:54,107 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3830 transitions. Word has length 228 [2018-09-10 10:29:54,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:54,108 INFO L480 AbstractCegarLoop]: Abstraction has 2666 states and 3830 transitions. [2018-09-10 10:29:54,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-10 10:29:54,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3830 transitions. [2018-09-10 10:29:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-09-10 10:29:54,121 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:54,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:29:54,122 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 10:29:54,122 INFO L82 PathProgramCache]: Analyzing trace with hash 865325322, now seen corresponding path program 1 times [2018-09-10 10:29:54,122 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:54,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:54,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:54,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:54,123 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:54,388 WARN L175 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:29:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:29:54,508 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:29:54,508 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 10:29:54,508 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:29:54,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:29:54,510 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:29:54,510 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 10:29:54,510 INFO L87 Difference]: Start difference. First operand 2666 states and 3830 transitions. Second operand 6 states. [2018-09-10 10:29:58,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:29:58,735 INFO L93 Difference]: Finished difference Result 5654 states and 8323 transitions. [2018-09-10 10:29:58,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 10:29:58,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 239 [2018-09-10 10:29:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:29:58,754 INFO L225 Difference]: With dead ends: 5654 [2018-09-10 10:29:58,754 INFO L226 Difference]: Without dead ends: 2994 [2018-09-10 10:29:58,767 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 10:29:58,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2018-09-10 10:29:58,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 2902. [2018-09-10 10:29:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2902 states. [2018-09-10 10:29:58,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 3896 transitions. [2018-09-10 10:29:58,849 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 3896 transitions. Word has length 239 [2018-09-10 10:29:58,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:29:58,850 INFO L480 AbstractCegarLoop]: Abstraction has 2902 states and 3896 transitions. [2018-09-10 10:29:58,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:29:58,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 3896 transitions. [2018-09-10 10:29:58,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-09-10 10:29:58,863 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:29:58,863 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:29:58,863 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 10:29:58,864 INFO L82 PathProgramCache]: Analyzing trace with hash 490104190, now seen corresponding path program 1 times [2018-09-10 10:29:58,864 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:29:58,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:58,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:58,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:29:58,865 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:29:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:59,321 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-10 10:29:59,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:29:59,322 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 10:29:59,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:29:59,330 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:29:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:29:59,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:29:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-10 10:29:59,872 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-10 10:30:00,350 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:00,350 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:30:00,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:00,380 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:00,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-10 10:30:01,339 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:01,654 WARN L175 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-09-10 10:30:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-10 10:30:01,961 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:30:01,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-09-10 10:30:01,961 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:30:01,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:30:01,962 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:30:01,962 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-09-10 10:30:01,963 INFO L87 Difference]: Start difference. First operand 2902 states and 3896 transitions. Second operand 9 states. [2018-09-10 10:30:06,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:30:06,850 INFO L93 Difference]: Finished difference Result 11557 states and 16483 transitions. [2018-09-10 10:30:06,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-10 10:30:06,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 253 [2018-09-10 10:30:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:30:06,897 INFO L225 Difference]: With dead ends: 11557 [2018-09-10 10:30:06,898 INFO L226 Difference]: Without dead ends: 8661 [2018-09-10 10:30:06,909 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1027 GetRequests, 1005 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2018-09-10 10:30:06,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8661 states. [2018-09-10 10:30:07,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8661 to 8597. [2018-09-10 10:30:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8597 states. [2018-09-10 10:30:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8597 states to 8597 states and 11564 transitions. [2018-09-10 10:30:07,168 INFO L78 Accepts]: Start accepts. Automaton has 8597 states and 11564 transitions. Word has length 253 [2018-09-10 10:30:07,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:30:07,169 INFO L480 AbstractCegarLoop]: Abstraction has 8597 states and 11564 transitions. [2018-09-10 10:30:07,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:30:07,169 INFO L276 IsEmpty]: Start isEmpty. Operand 8597 states and 11564 transitions. [2018-09-10 10:30:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-09-10 10:30:07,209 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:30:07,210 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, 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] [2018-09-10 10:30:07,210 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 10:30:07,210 INFO L82 PathProgramCache]: Analyzing trace with hash 665990590, now seen corresponding path program 1 times [2018-09-10 10:30:07,210 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:30:07,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:07,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:07,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:07,213 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:30:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:08,065 WARN L175 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 12 [2018-09-10 10:30:08,270 WARN L175 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-10 10:30:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:08,667 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:08,667 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 10:30:08,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:08,682 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:08,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:09,785 WARN L175 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-10 10:30:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:09,881 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:10,207 WARN L175 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-09-10 10:30:10,347 WARN L175 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2018-09-10 10:30:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:10,671 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 10:30:10,671 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [9] total 14 [2018-09-10 10:30:10,671 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:30:10,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:30:10,672 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:30:10,672 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-09-10 10:30:10,673 INFO L87 Difference]: Start difference. First operand 8597 states and 11564 transitions. Second operand 5 states. [2018-09-10 10:30:14,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:30:14,149 INFO L93 Difference]: Finished difference Result 26945 states and 38482 transitions. [2018-09-10 10:30:14,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 10:30:14,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2018-09-10 10:30:14,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:30:14,246 INFO L225 Difference]: With dead ends: 26945 [2018-09-10 10:30:14,247 INFO L226 Difference]: Without dead ends: 18354 [2018-09-10 10:30:14,308 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 540 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2018-09-10 10:30:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18354 states. [2018-09-10 10:30:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18354 to 17785. [2018-09-10 10:30:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17785 states. [2018-09-10 10:30:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17785 states to 17785 states and 22261 transitions. [2018-09-10 10:30:14,822 INFO L78 Accepts]: Start accepts. Automaton has 17785 states and 22261 transitions. Word has length 272 [2018-09-10 10:30:14,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:30:14,823 INFO L480 AbstractCegarLoop]: Abstraction has 17785 states and 22261 transitions. [2018-09-10 10:30:14,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:30:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 17785 states and 22261 transitions. [2018-09-10 10:30:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-09-10 10:30:14,885 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:30:14,885 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:14,886 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 10:30:14,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1493397055, now seen corresponding path program 1 times [2018-09-10 10:30:14,886 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:30:14,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:14,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:14,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:14,887 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:30:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:15,530 WARN L175 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-10 10:30:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:15,796 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:15,796 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:30:15,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:15,812 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:16,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:16,229 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:16,587 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 79 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:16,611 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:16,611 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:30:16,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:16,631 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:17,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:17,494 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:17,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 79 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:18,299 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:30:18,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8, 8, 8] total 30 [2018-09-10 10:30:18,300 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:30:18,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-10 10:30:18,301 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-10 10:30:18,302 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2018-09-10 10:30:18,302 INFO L87 Difference]: Start difference. First operand 17785 states and 22261 transitions. Second operand 12 states. [2018-09-10 10:30:27,682 WARN L175 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-10 10:30:28,611 WARN L175 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 10:30:31,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:30:31,681 INFO L93 Difference]: Finished difference Result 79101 states and 103327 transitions. [2018-09-10 10:30:31,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-10 10:30:31,681 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 284 [2018-09-10 10:30:31,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:30:31,984 INFO L225 Difference]: With dead ends: 79101 [2018-09-10 10:30:31,985 INFO L226 Difference]: Without dead ends: 61322 [2018-09-10 10:30:32,061 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1220 GetRequests, 1126 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2938 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1476, Invalid=7644, Unknown=0, NotChecked=0, Total=9120 [2018-09-10 10:30:32,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61322 states. [2018-09-10 10:30:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61322 to 58902. [2018-09-10 10:30:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58902 states. [2018-09-10 10:30:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58902 states to 58902 states and 72788 transitions. [2018-09-10 10:30:33,671 INFO L78 Accepts]: Start accepts. Automaton has 58902 states and 72788 transitions. Word has length 284 [2018-09-10 10:30:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:30:33,672 INFO L480 AbstractCegarLoop]: Abstraction has 58902 states and 72788 transitions. [2018-09-10 10:30:33,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-10 10:30:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 58902 states and 72788 transitions. [2018-09-10 10:30:33,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-09-10 10:30:33,775 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:30:33,775 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, 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] [2018-09-10 10:30:33,776 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 10:30:33,776 INFO L82 PathProgramCache]: Analyzing trace with hash -595670805, now seen corresponding path program 1 times [2018-09-10 10:30:33,776 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:30:33,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:33,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:33,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:33,778 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:30:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:34,158 WARN L175 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 10:30:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:30:34,906 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:34,906 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:30:35,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:35,224 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:35,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 10:30:35,793 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 10:30:35,963 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 10:30:35,964 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2018-09-10 10:30:35,964 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:30:35,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 10:30:35,965 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 10:30:35,965 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:30:35,965 INFO L87 Difference]: Start difference. First operand 58902 states and 72788 transitions. Second operand 4 states. [2018-09-10 10:30:38,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:30:38,452 INFO L93 Difference]: Finished difference Result 145728 states and 183751 transitions. [2018-09-10 10:30:38,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 10:30:38,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 283 [2018-09-10 10:30:38,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:30:38,781 INFO L225 Difference]: With dead ends: 145728 [2018-09-10 10:30:38,781 INFO L226 Difference]: Without dead ends: 86832 [2018-09-10 10:30:38,937 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 561 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:30:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86832 states. [2018-09-10 10:30:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86832 to 86302. [2018-09-10 10:30:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86302 states. [2018-09-10 10:30:41,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86302 states to 86302 states and 107343 transitions. [2018-09-10 10:30:41,176 INFO L78 Accepts]: Start accepts. Automaton has 86302 states and 107343 transitions. Word has length 283 [2018-09-10 10:30:41,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:30:41,177 INFO L480 AbstractCegarLoop]: Abstraction has 86302 states and 107343 transitions. [2018-09-10 10:30:41,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 10:30:41,177 INFO L276 IsEmpty]: Start isEmpty. Operand 86302 states and 107343 transitions. [2018-09-10 10:30:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-09-10 10:30:41,267 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:30:41,267 INFO L376 BasicCegarLoop]: trace histogram [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, 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] [2018-09-10 10:30:41,268 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 10:30:41,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1065195107, now seen corresponding path program 1 times [2018-09-10 10:30:41,268 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:30:41,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:41,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:41,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:41,269 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:30:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-10 10:30:41,808 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:41,808 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 10:30:41,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:41,822 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:42,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 119 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-09-10 10:30:42,463 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-09-10 10:30:42,662 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:42,663 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 10:30:42,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:42,679 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:43,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:43,591 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 119 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-09-10 10:30:43,591 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-09-10 10:30:43,730 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:30:43,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4, 4, 4] total 13 [2018-09-10 10:30:43,730 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:30:43,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-10 10:30:43,732 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-10 10:30:43,732 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-09-10 10:30:43,732 INFO L87 Difference]: Start difference. First operand 86302 states and 107343 transitions. Second operand 8 states. [2018-09-10 10:30:52,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:30:52,417 INFO L93 Difference]: Finished difference Result 244798 states and 327363 transitions. [2018-09-10 10:30:52,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-10 10:30:52,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 307 [2018-09-10 10:30:52,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:30:53,158 INFO L225 Difference]: With dead ends: 244798 [2018-09-10 10:30:53,159 INFO L226 Difference]: Without dead ends: 158502 [2018-09-10 10:30:53,457 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1271 GetRequests, 1237 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2018-09-10 10:30:53,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158502 states. [2018-09-10 10:30:56,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158502 to 151572. [2018-09-10 10:30:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151572 states. [2018-09-10 10:30:57,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151572 states to 151572 states and 179373 transitions. [2018-09-10 10:30:57,317 INFO L78 Accepts]: Start accepts. Automaton has 151572 states and 179373 transitions. Word has length 307 [2018-09-10 10:30:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:30:57,317 INFO L480 AbstractCegarLoop]: Abstraction has 151572 states and 179373 transitions. [2018-09-10 10:30:57,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-10 10:30:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 151572 states and 179373 transitions. [2018-09-10 10:30:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-09-10 10:30:57,460 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:30:57,460 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 10:30:57,461 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 10:30:57,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1043077258, now seen corresponding path program 1 times [2018-09-10 10:30:57,461 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:30:57,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:57,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:57,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:30:57,462 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:30:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 182 proven. 59 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-09-10 10:30:57,800 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:57,800 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:30:57,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:57,812 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:58,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:58,300 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-10 10:30:58,300 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:30:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-10 10:30:58,536 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:30:58,536 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:30:58,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:30:58,553 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:30:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:30:59,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:30:59,500 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-10 10:30:59,500 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:31:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-10 10:31:00,866 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:31:00,867 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-09-10 10:31:00,868 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:31:00,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:31:00,869 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:31:00,869 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-10 10:31:00,870 INFO L87 Difference]: Start difference. First operand 151572 states and 179373 transitions. Second operand 9 states. [2018-09-10 10:31:32,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:31:32,556 INFO L93 Difference]: Finished difference Result 895971 states and 1159273 transitions. [2018-09-10 10:31:32,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-10 10:31:32,557 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 368 [2018-09-10 10:31:32,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:31:35,247 INFO L225 Difference]: With dead ends: 895971 [2018-09-10 10:31:35,247 INFO L226 Difference]: Without dead ends: 745372 [2018-09-10 10:31:35,812 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1536 GetRequests, 1489 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=411, Invalid=1845, Unknown=0, NotChecked=0, Total=2256 [2018-09-10 10:31:36,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745372 states. [2018-09-10 10:31:48,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745372 to 726082. [2018-09-10 10:31:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726082 states. [2018-09-10 10:31:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726082 states to 726082 states and 860859 transitions. [2018-09-10 10:31:52,170 INFO L78 Accepts]: Start accepts. Automaton has 726082 states and 860859 transitions. Word has length 368 [2018-09-10 10:31:52,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:31:52,170 INFO L480 AbstractCegarLoop]: Abstraction has 726082 states and 860859 transitions. [2018-09-10 10:31:52,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:31:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 726082 states and 860859 transitions. [2018-09-10 10:31:52,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2018-09-10 10:31:52,571 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:31:52,571 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 10:31:52,572 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 10:31:52,572 INFO L82 PathProgramCache]: Analyzing trace with hash -759512957, now seen corresponding path program 1 times [2018-09-10 10:31:52,572 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:31:52,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:31:52,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:31:52,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:31:52,574 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:31:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:31:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 204 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-09-10 10:31:54,453 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:31:54,453 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:31:54,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:31:54,461 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:31:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:31:54,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:31:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-10 10:31:54,861 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:31:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-10 10:31:55,054 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 10:31:55,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-10 10:31:55,054 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:31:55,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:31:55,055 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:31:55,055 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-10 10:31:55,055 INFO L87 Difference]: Start difference. First operand 726082 states and 860859 transitions. Second operand 3 states. [2018-09-10 10:32:21,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:32:21,138 INFO L93 Difference]: Finished difference Result 1428754 states and 1693158 transitions. [2018-09-10 10:32:21,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:32:21,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 375 [2018-09-10 10:32:21,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:32:23,382 INFO L225 Difference]: With dead ends: 1428754 [2018-09-10 10:32:23,382 INFO L226 Difference]: Without dead ends: 707289 [2018-09-10 10:32:25,152 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 748 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-10 10:32:25,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707289 states. [2018-09-10 10:32:36,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707289 to 689287. [2018-09-10 10:32:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689287 states. [2018-09-10 10:32:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689287 states to 689287 states and 804309 transitions. [2018-09-10 10:32:40,207 INFO L78 Accepts]: Start accepts. Automaton has 689287 states and 804309 transitions. Word has length 375 [2018-09-10 10:32:40,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:32:40,208 INFO L480 AbstractCegarLoop]: Abstraction has 689287 states and 804309 transitions. [2018-09-10 10:32:40,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:32:40,208 INFO L276 IsEmpty]: Start isEmpty. Operand 689287 states and 804309 transitions. [2018-09-10 10:32:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-09-10 10:32:40,829 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:32:40,829 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 10:32:40,829 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:32:40,830 INFO L82 PathProgramCache]: Analyzing trace with hash 516670479, now seen corresponding path program 1 times [2018-09-10 10:32:40,830 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:32:40,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:32:40,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:32:40,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:32:40,831 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:32:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:32:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 212 proven. 34 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-10 10:32:41,574 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:32:41,574 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:32:41,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:32:41,583 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:32:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:32:41,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:32:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 212 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-09-10 10:32:42,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:32:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-09-10 10:32:43,453 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:32:43,454 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:32:43,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:32:43,469 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:32:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:32:44,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:32:44,385 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 212 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-09-10 10:32:44,385 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:32:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-09-10 10:32:44,585 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:32:44,586 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4, 4, 4] total 13 [2018-09-10 10:32:44,586 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:32:44,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-10 10:32:44,587 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-10 10:32:44,588 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-10 10:32:44,588 INFO L87 Difference]: Start difference. First operand 689287 states and 804309 transitions. Second operand 8 states. Received shutdown request... [2018-09-10 10:32:58,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-10 10:32:58,059 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 10:32:58,066 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 10:32:58,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 10:32:58 BoogieIcfgContainer [2018-09-10 10:32:58,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 10:32:58,068 INFO L168 Benchmark]: Toolchain (without parser) took 206645.49 ms. Allocated memory was 1.5 GB in the beginning and 6.4 GB in the end (delta: 4.9 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -661.0 MB). Peak memory consumption was 5.4 GB. Max. memory is 7.1 GB. [2018-09-10 10:32:58,069 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 10:32:58,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1129.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-10 10:32:58,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 182.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-10 10:32:58,071 INFO L168 Benchmark]: Boogie Preprocessor took 398.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.6 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2018-09-10 10:32:58,072 INFO L168 Benchmark]: RCFGBuilder took 4851.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 285.0 MB). Peak memory consumption was 285.0 MB. Max. memory is 7.1 GB. [2018-09-10 10:32:58,072 INFO L168 Benchmark]: TraceAbstraction took 200076.20 ms. Allocated memory was 2.3 GB in the beginning and 6.4 GB in the end (delta: 4.1 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -116.1 MB). Peak memory consumption was 5.2 GB. Max. memory is 7.1 GB. [2018-09-10 10:32:58,077 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1129.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 182.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 398.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.6 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4851.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 285.0 MB). Peak memory consumption was 285.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200076.20 ms. Allocated memory was 2.3 GB in the beginning and 6.4 GB in the end (delta: 4.1 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -116.1 MB). Peak memory consumption was 5.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1626]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1626). Cancelled while BasicCegarLoop was constructing difference of abstraction (689287states) and FLOYD_HOARE automaton (currently 21 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (1108372 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 200.0s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 128.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2651 SDtfs, 22850 SDslu, 3470 SDs, 0 SdLazy, 28813 SolverSat, 6929 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9524 GetRequests, 9230 SyntacticMatches, 24 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4078 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=726082occurred 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: 40.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 47967 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 5.9s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 8046 NumberOfCodeBlocks, 8046 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 12618 ConstructedInterpolants, 0 QuantifiedInterpolants, 11707974 SizeOfPredicates, 53 NumberOfNonLiveVariables, 18305 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 42 InterpolantComputations, 8 PerfectInterpolantSequences, 5159/5660 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/Problem03_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_10-32-58-093.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_10-32-58-093.csv Completed graceful shutdown