java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 20:23:02,382 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 20:23:02,384 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 20:23:02,396 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 20:23:02,396 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 20:23:02,397 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 20:23:02,399 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 20:23:02,400 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 20:23:02,402 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 20:23:02,403 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 20:23:02,403 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 20:23:02,404 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 20:23:02,405 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 20:23:02,406 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 20:23:02,407 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 20:23:02,408 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 20:23:02,408 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 20:23:02,412 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 20:23:02,414 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 20:23:02,416 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 20:23:02,417 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 20:23:02,418 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 20:23:02,420 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 20:23:02,420 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 20:23:02,420 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 20:23:02,421 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 20:23:02,422 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 20:23:02,423 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 20:23:02,424 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 20:23:02,425 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 20:23:02,426 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 20:23:02,426 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 20:23:02,429 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 20:23:02,444 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 20:23:02,445 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 20:23:02,446 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 20:23:02,446 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 20:23:02,446 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 20:23:02,446 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 20:23:02,446 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 20:23:02,447 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 20:23:02,447 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 20:23:02,447 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 20:23:02,447 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 20:23:02,448 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 20:23:02,448 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 20:23:02,448 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 20:23:02,448 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 20:23:02,449 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 20:23:02,449 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 20:23:02,449 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 20:23:02,449 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 20:23:02,449 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 20:23:02,450 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 20:23:02,450 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 20:23:02,450 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 20:23:02,450 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:23:02,450 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 20:23:02,451 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 20:23:02,451 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 20:23:02,451 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 20:23:02,451 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 20:23:02,451 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 20:23:02,451 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 20:23:02,452 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 20:23:02,452 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 20:23:02,494 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 20:23:02,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 20:23:02,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 20:23:02,513 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 20:23:02,513 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 20:23:02,514 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52_true-unreach-call_false-termination.c [2018-07-23 20:23:02,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449b273ef/c69ead819c394a18acb31d32a519cb7a/FLAGc3c30f281 [2018-07-23 20:23:03,155 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 20:23:03,156 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label52_true-unreach-call_false-termination.c [2018-07-23 20:23:03,173 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449b273ef/c69ead819c394a18acb31d32a519cb7a/FLAGc3c30f281 [2018-07-23 20:23:03,192 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/449b273ef/c69ead819c394a18acb31d32a519cb7a [2018-07-23 20:23:03,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 20:23:03,206 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 20:23:03,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 20:23:03,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 20:23:03,214 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 20:23:03,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:23:03" (1/1) ... [2018-07-23 20:23:03,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e46634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03, skipping insertion in model container [2018-07-23 20:23:03,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 08:23:03" (1/1) ... [2018-07-23 20:23:03,454 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 20:23:03,793 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:23:03,815 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 20:23:03,953 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 20:23:03,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03 WrapperNode [2018-07-23 20:23:03,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 20:23:03,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 20:23:03,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 20:23:03,994 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 20:23:04,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03" (1/1) ... [2018-07-23 20:23:04,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03" (1/1) ... [2018-07-23 20:23:04,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 20:23:04,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 20:23:04,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 20:23:04,104 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 20:23:04,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03" (1/1) ... [2018-07-23 20:23:04,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03" (1/1) ... [2018-07-23 20:23:04,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03" (1/1) ... [2018-07-23 20:23:04,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03" (1/1) ... [2018-07-23 20:23:04,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03" (1/1) ... [2018-07-23 20:23:04,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03" (1/1) ... [2018-07-23 20:23:04,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03" (1/1) ... [2018-07-23 20:23:04,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 20:23:04,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 20:23:04,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 20:23:04,200 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 20:23:04,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 20:23:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-23 20:23:04,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-23 20:23:04,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 20:23:04,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 20:23:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 20:23:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 20:23:04,413 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 20:23:04,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 20:23:07,622 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 20:23:07,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:23:07 BoogieIcfgContainer [2018-07-23 20:23:07,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 20:23:07,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 20:23:07,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 20:23:07,628 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 20:23:07,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 08:23:03" (1/3) ... [2018-07-23 20:23:07,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57532b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:23:07, skipping insertion in model container [2018-07-23 20:23:07,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 08:23:03" (2/3) ... [2018-07-23 20:23:07,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57532b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 08:23:07, skipping insertion in model container [2018-07-23 20:23:07,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 08:23:07" (3/3) ... [2018-07-23 20:23:07,632 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label52_true-unreach-call_false-termination.c [2018-07-23 20:23:07,643 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 20:23:07,652 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 20:23:07,714 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 20:23:07,715 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 20:23:07,716 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 20:23:07,716 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 20:23:07,716 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 20:23:07,716 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 20:23:07,717 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 20:23:07,717 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 20:23:07,717 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 20:23:07,745 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-07-23 20:23:07,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-07-23 20:23:07,762 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:23:07,764 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:23:07,764 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:23:07,770 INFO L82 PathProgramCache]: Analyzing trace with hash -523479325, now seen corresponding path program 1 times [2018-07-23 20:23:07,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:23:07,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:07,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:23:07,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:07,834 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:23:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:23:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:23:08,492 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:23:08,493 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 20:23:08,493 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:23:08,500 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 20:23:08,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 20:23:08,519 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:23:08,522 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-07-23 20:23:10,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:23:10,224 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-07-23 20:23:10,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 20:23:10,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2018-07-23 20:23:10,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:23:10,257 INFO L225 Difference]: With dead ends: 550 [2018-07-23 20:23:10,257 INFO L226 Difference]: Without dead ends: 340 [2018-07-23 20:23:10,264 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 20:23:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-07-23 20:23:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-07-23 20:23:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-07-23 20:23:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 569 transitions. [2018-07-23 20:23:10,342 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 569 transitions. Word has length 133 [2018-07-23 20:23:10,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:23:10,343 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 569 transitions. [2018-07-23 20:23:10,343 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 20:23:10,344 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 569 transitions. [2018-07-23 20:23:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-07-23 20:23:10,351 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:23:10,351 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:23:10,352 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:23:10,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1446579956, now seen corresponding path program 1 times [2018-07-23 20:23:10,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:23:10,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:10,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:23:10,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:10,354 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:23:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:23:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:23:10,569 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 20:23:10,570 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 20:23:10,570 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:23:10,572 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 20:23:10,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 20:23:10,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 20:23:10,573 INFO L87 Difference]: Start difference. First operand 340 states and 569 transitions. Second operand 5 states. [2018-07-23 20:23:12,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:23:12,705 INFO L93 Difference]: Finished difference Result 1079 states and 1888 transitions. [2018-07-23 20:23:12,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 20:23:12,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-07-23 20:23:12,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:23:12,715 INFO L225 Difference]: With dead ends: 1079 [2018-07-23 20:23:12,715 INFO L226 Difference]: Without dead ends: 745 [2018-07-23 20:23:12,719 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 20:23:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-07-23 20:23:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 733. [2018-07-23 20:23:12,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2018-07-23 20:23:12,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1163 transitions. [2018-07-23 20:23:12,779 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1163 transitions. Word has length 143 [2018-07-23 20:23:12,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:23:12,779 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1163 transitions. [2018-07-23 20:23:12,779 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 20:23:12,779 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1163 transitions. [2018-07-23 20:23:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-23 20:23:12,786 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:23:12,787 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-23 20:23:12,787 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:23:12,788 INFO L82 PathProgramCache]: Analyzing trace with hash 684817504, now seen corresponding path program 1 times [2018-07-23 20:23:12,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:23:12,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:12,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:23:12,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:12,790 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:23:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:23:13,116 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 20:23:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-23 20:23:13,202 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:23:13,202 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:23:13,203 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2018-07-23 20:23:13,205 INFO L201 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [24], [28], [32], [36], [40], [44], [47], [48], [52], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [260], [264], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [511], [519], [527], [535], [543], [551], [559], [567], [575], [583], [591], [599], [607], [615], [623], [631], [639], [647], [655], [663], [671], [679], [687], [695], [699], [701], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:23:13,280 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:23:13,280 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:23:32,413 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:23:32,415 INFO L272 AbstractInterpreter]: Visited 68 different actions 68 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-07-23 20:23:32,425 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:23:35,046 INFO L232 lantSequenceWeakener]: Weakened 83 states. On average, predicates are now at 79.74% of their original sizes. [2018-07-23 20:23:35,047 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:23:36,469 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:23:36,470 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:23:36,471 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2018-07-23 20:23:36,471 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:23:36,471 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-23 20:23:36,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-23 20:23:36,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-07-23 20:23:36,472 INFO L87 Difference]: Start difference. First operand 733 states and 1163 transitions. Second operand 12 states. [2018-07-23 20:23:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:23:47,431 INFO L93 Difference]: Finished difference Result 1521 states and 2423 transitions. [2018-07-23 20:23:47,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 20:23:47,431 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2018-07-23 20:23:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:23:47,436 INFO L225 Difference]: With dead ends: 1521 [2018-07-23 20:23:47,436 INFO L226 Difference]: Without dead ends: 794 [2018-07-23 20:23:47,440 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-07-23 20:23:47,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2018-07-23 20:23:47,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 794. [2018-07-23 20:23:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2018-07-23 20:23:47,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1232 transitions. [2018-07-23 20:23:47,478 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1232 transitions. Word has length 153 [2018-07-23 20:23:47,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:23:47,478 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1232 transitions. [2018-07-23 20:23:47,478 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-23 20:23:47,478 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1232 transitions. [2018-07-23 20:23:47,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-07-23 20:23:47,483 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:23:47,483 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-07-23 20:23:47,483 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:23:47,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1004623559, now seen corresponding path program 1 times [2018-07-23 20:23:47,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:23:47,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:47,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:23:47,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:23:47,485 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:23:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:23:47,969 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:23:47,970 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:23:47,970 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:23:47,970 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 156 with the following transitions: [2018-07-23 20:23:47,971 INFO L201 CegarAbsIntRunner]: [0], [4], [7], [8], [12], [15], [16], [20], [24], [28], [32], [36], [40], [44], [48], [52], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [260], [264], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [511], [519], [527], [535], [543], [551], [559], [567], [575], [583], [591], [599], [607], [615], [623], [631], [639], [647], [655], [663], [671], [679], [687], [695], [699], [701], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:23:47,986 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:23:47,987 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 20:25:15,891 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 20:25:15,892 INFO L272 AbstractInterpreter]: Visited 108 different actions 173 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-07-23 20:25:15,907 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 20:25:23,989 INFO L232 lantSequenceWeakener]: Weakened 124 states. On average, predicates are now at 80.42% of their original sizes. [2018-07-23 20:25:23,989 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 20:25:26,699 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 20:25:26,700 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 20:25:26,700 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-07-23 20:25:26,700 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 20:25:26,701 INFO L450 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-07-23 20:25:26,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-07-23 20:25:26,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2018-07-23 20:25:26,702 INFO L87 Difference]: Start difference. First operand 794 states and 1232 transitions. Second operand 17 states. [2018-07-23 20:25:57,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 20:25:57,930 INFO L93 Difference]: Finished difference Result 1705 states and 2683 transitions. [2018-07-23 20:25:57,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-23 20:25:57,931 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 155 [2018-07-23 20:25:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 20:25:57,936 INFO L225 Difference]: With dead ends: 1705 [2018-07-23 20:25:57,936 INFO L226 Difference]: Without dead ends: 793 [2018-07-23 20:25:57,939 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 170 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2018-07-23 20:25:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2018-07-23 20:25:57,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2018-07-23 20:25:57,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2018-07-23 20:25:57,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1153 transitions. [2018-07-23 20:25:57,969 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1153 transitions. Word has length 155 [2018-07-23 20:25:57,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 20:25:57,969 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 1153 transitions. [2018-07-23 20:25:57,969 INFO L472 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-07-23 20:25:57,970 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1153 transitions. [2018-07-23 20:25:57,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-23 20:25:57,973 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 20:25:57,974 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 20:25:57,974 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 20:25:57,974 INFO L82 PathProgramCache]: Analyzing trace with hash 890527327, now seen corresponding path program 1 times [2018-07-23 20:25:57,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 20:25:57,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:25:57,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:25:57,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 20:25:57,976 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 20:25:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:25:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 20:25:58,229 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:25:58,230 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 20:25:58,230 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 163 with the following transitions: [2018-07-23 20:25:58,230 INFO L201 CegarAbsIntRunner]: [0], [3], [4], [8], [12], [16], [20], [24], [28], [32], [36], [40], [44], [47], [48], [52], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [164], [168], [172], [176], [180], [184], [188], [192], [196], [200], [204], [208], [212], [216], [220], [224], [228], [232], [236], [240], [244], [248], [252], [256], [260], [264], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [479], [487], [495], [503], [511], [519], [527], [535], [543], [551], [559], [567], [575], [583], [591], [599], [607], [615], [623], [631], [639], [647], [655], [663], [671], [679], [687], [695], [699], [701], [755], [756], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-07-23 20:25:58,236 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 20:25:58,236 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 20:27:27,016 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 20:27:27,017 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 20:27:27,018 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 20:27:27,018 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 20:27:27,018 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 20:27:27,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 20:27:27,029 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 20:27:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 20:27:27,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 20:27:27,192 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 20:27:27,393 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 20:27:27,394 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 20:27:27,401 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 20:27:27,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 08:27:27 BoogieIcfgContainer [2018-07-23 20:27:27,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 20:27:27,403 INFO L168 Benchmark]: Toolchain (without parser) took 264198.60 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 301.0 MB. Max. memory is 7.1 GB. [2018-07-23 20:27:27,404 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 20:27:27,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 786.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-23 20:27:27,405 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 20:27:27,406 INFO L168 Benchmark]: Boogie Preprocessor took 95.38 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 20:27:27,407 INFO L168 Benchmark]: RCFGBuilder took 3423.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -747.8 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-07-23 20:27:27,408 INFO L168 Benchmark]: TraceAbstraction took 259777.83 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 751.3 MB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -527.1 MB). Peak memory consumption was 224.2 MB. Max. memory is 7.1 GB. [2018-07-23 20:27:27,415 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 786.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 109.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.38 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3423.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -747.8 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 259777.83 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 751.3 MB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -527.1 MB). Peak memory consumption was 224.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 554]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 554). Cancelled while BasicCegarLoop was analyzing trace of length 163 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 259.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 46.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 728 SDtfs, 1786 SDslu, 551 SDs, 0 SdLazy, 2530 SolverSat, 571 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 342 GetRequests, 285 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=794occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 195.9s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9948456347308577 AbsIntWeakeningRatio, 0.20915032679738563 AbsIntAvgWeakeningVarsNumRemoved, 883.7124183006536 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 584 NumberOfCodeBlocks, 584 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 211456 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 35/50 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/Problem01_label52_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_20-27-27-432.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem01_label52_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_20-27-27-432.csv Completed graceful shutdown