java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 19:45:00,399 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 19:45:00,401 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 19:45:00,415 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 19:45:00,416 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 19:45:00,417 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 19:45:00,418 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 19:45:00,421 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 19:45:00,423 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 19:45:00,423 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 19:45:00,427 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 19:45:00,427 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 19:45:00,428 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 19:45:00,429 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 19:45:00,431 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 19:45:00,432 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 19:45:00,433 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 19:45:00,435 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 19:45:00,437 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 19:45:00,446 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 19:45:00,448 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 19:45:00,449 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 19:45:00,451 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 19:45:00,451 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 19:45:00,451 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 19:45:00,452 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 19:45:00,453 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 19:45:00,459 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 19:45:00,460 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 19:45:00,461 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 19:45:00,461 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 19:45:00,462 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 19:45:00,462 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 19:45:00,462 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 19:45:00,463 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 19:45:00,465 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 19:45:00,465 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 19:45:00,485 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 19:45:00,485 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 19:45:00,486 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 19:45:00,486 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 19:45:00,486 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 19:45:00,486 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 19:45:00,487 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 19:45:00,487 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 19:45:00,487 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 19:45:00,487 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 19:45:00,487 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 19:45:00,487 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 19:45:00,488 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 19:45:00,488 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 19:45:00,488 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 19:45:00,489 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 19:45:00,489 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 19:45:00,489 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 19:45:00,489 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 19:45:00,489 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 19:45:00,490 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 19:45:00,490 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 19:45:00,490 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 19:45:00,490 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 19:45:00,490 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 19:45:00,490 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 19:45:00,491 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 19:45:00,491 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 19:45:00,491 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 19:45:00,491 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 19:45:00,491 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 19:45:00,491 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 19:45:00,492 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 19:45:00,492 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 19:45:00,492 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 19:45:00,545 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 19:45:00,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 19:45:00,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 19:45:00,571 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 19:45:00,572 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 19:45:00,572 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label21_true-unreach-call.c [2018-07-21 19:45:00,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/a8db29b57/c08abd86a45547ebb1f274a62ab8a57e/FLAG9313afbf9 [2018-07-21 19:45:01,413 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 19:45:01,414 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label21_true-unreach-call.c [2018-07-21 19:45:01,468 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/a8db29b57/c08abd86a45547ebb1f274a62ab8a57e/FLAG9313afbf9 [2018-07-21 19:45:01,489 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/a8db29b57/c08abd86a45547ebb1f274a62ab8a57e [2018-07-21 19:45:01,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 19:45:01,509 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 19:45:01,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 19:45:01,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 19:45:01,518 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 19:45:01,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:45:01" (1/1) ... [2018-07-21 19:45:01,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7192ef8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:01, skipping insertion in model container [2018-07-21 19:45:01,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:45:01" (1/1) ... [2018-07-21 19:45:01,873 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 19:45:02,896 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 19:45:02,916 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 19:45:03,508 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 19:45:03,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:03 WrapperNode [2018-07-21 19:45:03,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 19:45:03,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 19:45:03,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 19:45:03,777 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 19:45:03,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:03" (1/1) ... [2018-07-21 19:45:03,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:03" (1/1) ... [2018-07-21 19:45:04,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 19:45:04,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 19:45:04,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 19:45:04,180 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 19:45:04,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:03" (1/1) ... [2018-07-21 19:45:04,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:03" (1/1) ... [2018-07-21 19:45:04,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:03" (1/1) ... [2018-07-21 19:45:04,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:03" (1/1) ... [2018-07-21 19:45:04,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:03" (1/1) ... [2018-07-21 19:45:05,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:03" (1/1) ... [2018-07-21 19:45:05,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:03" (1/1) ... [2018-07-21 19:45:05,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 19:45:05,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 19:45:05,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 19:45:05,268 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 19:45:05,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:03" (1/1) ... No working directory specified, using /storage/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 [2018-07-21 19:45:05,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 19:45:05,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 19:45:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 19:45:05,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 19:45:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 19:45:05,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 19:45:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 19:45:05,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 19:45:05,341 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 19:45:05,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 19:45:16,014 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 19:45:16,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:45:16 BoogieIcfgContainer [2018-07-21 19:45:16,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 19:45:16,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 19:45:16,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 19:45:16,019 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 19:45:16,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:45:01" (1/3) ... [2018-07-21 19:45:16,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648a73dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:45:16, skipping insertion in model container [2018-07-21 19:45:16,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:03" (2/3) ... [2018-07-21 19:45:16,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648a73dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:45:16, skipping insertion in model container [2018-07-21 19:45:16,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:45:16" (3/3) ... [2018-07-21 19:45:16,024 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label21_true-unreach-call.c [2018-07-21 19:45:16,032 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 19:45:16,044 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 19:45:16,101 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 19:45:16,101 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 19:45:16,102 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 19:45:16,102 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 19:45:16,102 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 19:45:16,102 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 19:45:16,102 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 19:45:16,102 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 19:45:16,103 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 19:45:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-21 19:45:16,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-07-21 19:45:16,150 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:45:16,151 INFO L358 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] [2018-07-21 19:45:16,152 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:45:16,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1161739564, now seen corresponding path program 1 times [2018-07-21 19:45:16,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:45:16,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:45:16,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:45:16,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:45:16,211 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:45:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:45:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:45:16,751 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 19:45:16,752 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 19:45:16,752 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:45:16,757 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 19:45:16,774 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 19:45:16,774 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 19:45:16,777 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-21 19:45:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:45:28,010 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-07-21 19:45:28,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 19:45:28,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2018-07-21 19:45:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:45:28,042 INFO L225 Difference]: With dead ends: 2137 [2018-07-21 19:45:28,042 INFO L226 Difference]: Without dead ends: 1527 [2018-07-21 19:45:28,052 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 19:45:28,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-07-21 19:45:28,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-07-21 19:45:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-07-21 19:45:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-07-21 19:45:28,220 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 66 [2018-07-21 19:45:28,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:45:28,222 INFO L471 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-07-21 19:45:28,222 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 19:45:28,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-07-21 19:45:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-07-21 19:45:28,232 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:45:28,233 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 19:45:28,233 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:45:28,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1451859934, now seen corresponding path program 1 times [2018-07-21 19:45:28,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:45:28,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:45:28,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:45:28,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:45:28,235 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:45:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:45:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:45:28,562 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 19:45:28,563 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 19:45:28,563 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:45:28,565 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 19:45:28,566 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 19:45:28,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-21 19:45:28,566 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 6 states. [2018-07-21 19:45:45,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:45:45,279 INFO L93 Difference]: Finished difference Result 5740 states and 9199 transitions. [2018-07-21 19:45:45,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 19:45:45,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-07-21 19:45:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:45:45,314 INFO L225 Difference]: With dead ends: 5740 [2018-07-21 19:45:45,314 INFO L226 Difference]: Without dead ends: 4233 [2018-07-21 19:45:45,327 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-21 19:45:45,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2018-07-21 19:45:45,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 4226. [2018-07-21 19:45:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4226 states. [2018-07-21 19:45:45,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 5626 transitions. [2018-07-21 19:45:45,517 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 5626 transitions. Word has length 138 [2018-07-21 19:45:45,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:45:45,517 INFO L471 AbstractCegarLoop]: Abstraction has 4226 states and 5626 transitions. [2018-07-21 19:45:45,518 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 19:45:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 5626 transitions. [2018-07-21 19:45:45,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-21 19:45:45,523 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:45:45,527 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 19:45:45,527 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:45:45,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1795216450, now seen corresponding path program 1 times [2018-07-21 19:45:45,528 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:45:45,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:45:45,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:45:45,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:45:45,530 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:45:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:45:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:45:45,939 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:45:45,939 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 19:45:45,940 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 142 with the following transitions: [2018-07-21 19:45:45,942 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [735], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1162], [1164], [1167], [1175], [1183], [1191], [1199], [1207], [1215], [1223], [1228], [1232], [1236], [1240], [1244], [1247], [2303], [2304], [2305], [2306], [2308], [2309] [2018-07-21 19:45:46,014 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 19:45:46,014 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 19:45:51,829 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 19:46:10,224 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 19:46:10,226 INFO L272 AbstractInterpreter]: Visited 82 different actions 233 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-21 19:46:10,250 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 19:46:18,890 INFO L232 lantSequenceWeakener]: Weakened 139 states. On average, predicates are now at 76.5% of their original sizes. [2018-07-21 19:46:18,891 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 19:46:53,757 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 19:46:53,757 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 19:46:53,758 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [60] imperfect sequences [7] total 65 [2018-07-21 19:46:53,758 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:46:53,758 INFO L450 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-07-21 19:46:53,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-07-21 19:46:53,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1208, Invalid=2332, Unknown=0, NotChecked=0, Total=3540 [2018-07-21 19:46:53,767 INFO L87 Difference]: Start difference. First operand 4226 states and 5626 transitions. Second operand 60 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown