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_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 19:49:36,395 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 19:49:36,397 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 19:49:36,410 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 19:49:36,410 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 19:49:36,411 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 19:49:36,413 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 19:49:36,414 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 19:49:36,416 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 19:49:36,417 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 19:49:36,418 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 19:49:36,418 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 19:49:36,419 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 19:49:36,420 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 19:49:36,421 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 19:49:36,422 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 19:49:36,423 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 19:49:36,425 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 19:49:36,427 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 19:49:36,429 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 19:49:36,430 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 19:49:36,431 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 19:49:36,434 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 19:49:36,434 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 19:49:36,434 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 19:49:36,435 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 19:49:36,436 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 19:49:36,437 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 19:49:36,438 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 19:49:36,439 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 19:49:36,439 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 19:49:36,440 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 19:49:36,440 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 19:49:36,440 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 19:49:36,441 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 19:49:36,442 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 19:49:36,443 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 19:49:36,458 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 19:49:36,458 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 19:49:36,459 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 19:49:36,459 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 19:49:36,459 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 19:49:36,460 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 19:49:36,460 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 19:49:36,460 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 19:49:36,460 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 19:49:36,460 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 19:49:36,461 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 19:49:36,461 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 19:49:36,462 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 19:49:36,462 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 19:49:36,462 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 19:49:36,462 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 19:49:36,462 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 19:49:36,463 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 19:49:36,463 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 19:49:36,463 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 19:49:36,463 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 19:49:36,463 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 19:49:36,464 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 19:49:36,464 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 19:49:36,464 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 19:49:36,464 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 19:49:36,465 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 19:49:36,465 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 19:49:36,465 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 19:49:36,465 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 19:49:36,465 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 19:49:36,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 19:49:36,466 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 19:49:36,466 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 19:49:36,466 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 19:49:36,518 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 19:49:36,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 19:49:36,536 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 19:49:36,538 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 19:49:36,538 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 19:49:36,539 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label28_true-unreach-call.c [2018-07-21 19:49:36,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/9a21d4343/9dd7a3344c9944299e5209eb6475e195/FLAGf306a974a [2018-07-21 19:49:37,363 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 19:49:37,364 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label28_true-unreach-call.c [2018-07-21 19:49:37,416 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/9a21d4343/9dd7a3344c9944299e5209eb6475e195/FLAGf306a974a [2018-07-21 19:49:37,436 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/9a21d4343/9dd7a3344c9944299e5209eb6475e195 [2018-07-21 19:49:37,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 19:49:37,454 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 19:49:37,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 19:49:37,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 19:49:37,466 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 19:49:37,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:49:37" (1/1) ... [2018-07-21 19:49:37,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df9384a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:37, skipping insertion in model container [2018-07-21 19:49:37,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:49:37" (1/1) ... [2018-07-21 19:49:37,759 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 19:49:38,660 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 19:49:38,679 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 19:49:39,187 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 19:49:39,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:39 WrapperNode [2018-07-21 19:49:39,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 19:49:39,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 19:49:39,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 19:49:39,513 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 19:49:39,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:39" (1/1) ... [2018-07-21 19:49:39,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:39" (1/1) ... [2018-07-21 19:49:39,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 19:49:39,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 19:49:39,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 19:49:39,795 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 19:49:39,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:39" (1/1) ... [2018-07-21 19:49:39,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:39" (1/1) ... [2018-07-21 19:49:39,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:39" (1/1) ... [2018-07-21 19:49:39,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:39" (1/1) ... [2018-07-21 19:49:40,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:39" (1/1) ... [2018-07-21 19:49:40,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:39" (1/1) ... [2018-07-21 19:49:40,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:39" (1/1) ... [2018-07-21 19:49:40,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 19:49:40,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 19:49:40,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 19:49:40,691 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 19:49:40,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:39" (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 19:49:40,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 19:49:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 19:49:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 19:49:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 19:49:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 19:49:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 19:49:40,766 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 19:49:40,767 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 19:49:40,768 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 19:49:40,768 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 19:49:51,947 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 19:49:51,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:49:51 BoogieIcfgContainer [2018-07-21 19:49:51,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 19:49:51,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 19:49:51,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 19:49:51,973 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 19:49:51,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:49:37" (1/3) ... [2018-07-21 19:49:51,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2d4f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:49:51, skipping insertion in model container [2018-07-21 19:49:51,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:49:39" (2/3) ... [2018-07-21 19:49:51,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d2d4f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:49:51, skipping insertion in model container [2018-07-21 19:49:51,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:49:51" (3/3) ... [2018-07-21 19:49:51,978 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label28_true-unreach-call.c [2018-07-21 19:49:51,985 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 19:49:51,997 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 19:49:52,047 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 19:49:52,048 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 19:49:52,048 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 19:49:52,048 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 19:49:52,048 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 19:49:52,048 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 19:49:52,048 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 19:49:52,049 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 19:49:52,049 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 19:49:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-21 19:49:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-07-21 19:49:52,105 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:49:52,106 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, 1, 1, 1, 1, 1] [2018-07-21 19:49:52,107 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 19:49:52,111 INFO L82 PathProgramCache]: Analyzing trace with hash 124019598, now seen corresponding path program 1 times [2018-07-21 19:49:52,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:49:52,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:49:52,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:49:52,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:49:52,156 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:49:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:49:52,733 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 19:49:52,735 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 19:49:52,736 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 19:49:52,736 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:49:52,740 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 19:49:52,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 19:49:52,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 19:49:52,759 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-21 19:50:07,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:50:07,266 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-07-21 19:50:07,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 19:50:07,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-07-21 19:50:07,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:50:07,300 INFO L225 Difference]: With dead ends: 2133 [2018-07-21 19:50:07,301 INFO L226 Difference]: Without dead ends: 1523 [2018-07-21 19:50:07,312 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 19:50:07,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-07-21 19:50:07,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-07-21 19:50:07,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-07-21 19:50:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-07-21 19:50:07,488 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 71 [2018-07-21 19:50:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:50:07,491 INFO L471 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-07-21 19:50:07,491 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 19:50:07,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-07-21 19:50:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-21 19:50:07,509 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:50:07,509 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, 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] [2018-07-21 19:50:07,509 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 19:50:07,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1012650751, now seen corresponding path program 1 times [2018-07-21 19:50:07,510 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:50:07,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:50:07,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:50:07,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:50:07,516 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:50:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:50:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:50:08,213 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:50:08,213 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 19:50:08,214 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 147 with the following transitions: [2018-07-21 19:50:08,218 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], [1166], [1174], [1182], [1190], [1198], [1202], [1204], [1207], [1215], [1223], [1228], [1232], [1236], [1240], [1244], [1247], [2303], [2304], [2305], [2306], [2308], [2309] [2018-07-21 19:50:08,306 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 19:50:08,306 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 19:50:14,851 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 19:50:36,415 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-21 19:50:36,416 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 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 19:50:36,463 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-21 19:50:36,464 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:50:36,464 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/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 [2018-07-21 19:50:36,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:50:36,491 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 19:50:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:50:36,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 19:50:39,161 WARN L169 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 32 [2018-07-21 19:50:40,628 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 14 [2018-07-21 19:50:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:50:40,861 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-21 19:50:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:50:41,397 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-21 19:50:41,397 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 12 [2018-07-21 19:50:41,397 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:50:41,398 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 19:50:41,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 19:50:41,399 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=101, Unknown=1, NotChecked=0, Total=132 [2018-07-21 19:50:41,399 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 3 states. [2018-07-21 19:50:46,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:50:46,699 INFO L93 Difference]: Finished difference Result 4342 states and 6673 transitions. [2018-07-21 19:50:46,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 19:50:46,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2018-07-21 19:50:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:50:46,729 INFO L225 Difference]: With dead ends: 4342 [2018-07-21 19:50:46,729 INFO L226 Difference]: Without dead ends: 2832 [2018-07-21 19:50:46,739 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 286 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=30, Invalid=101, Unknown=1, NotChecked=0, Total=132 [2018-07-21 19:50:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2018-07-21 19:50:46,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2827. [2018-07-21 19:50:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2827 states. [2018-07-21 19:50:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 4227 transitions. [2018-07-21 19:50:46,875 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 4227 transitions. Word has length 146 [2018-07-21 19:50:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:50:46,876 INFO L471 AbstractCegarLoop]: Abstraction has 2827 states and 4227 transitions. [2018-07-21 19:50:46,876 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 19:50:46,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 4227 transitions. [2018-07-21 19:50:46,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-21 19:50:46,886 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:50:46,886 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, 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] [2018-07-21 19:50:46,887 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 19:50:46,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1117039166, now seen corresponding path program 1 times [2018-07-21 19:50:46,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:50:46,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:50:46,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:50:46,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:50:46,889 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:50:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:50:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:50:47,255 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 19:50:47,255 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 19:50:47,255 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:50:47,256 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 19:50:47,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 19:50:47,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 19:50:47,257 INFO L87 Difference]: Start difference. First operand 2827 states and 4227 transitions. Second operand 6 states. [2018-07-21 19:50:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:50:54,736 INFO L93 Difference]: Finished difference Result 8406 states and 13043 transitions. [2018-07-21 19:50:54,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 19:50:54,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-07-21 19:50:54,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:50:54,790 INFO L225 Difference]: With dead ends: 8406 [2018-07-21 19:50:54,790 INFO L226 Difference]: Without dead ends: 5585 [2018-07-21 19:50:54,808 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 19:50:54,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5585 states. [2018-07-21 19:50:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5585 to 5548. [2018-07-21 19:50:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5548 states. [2018-07-21 19:50:55,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5548 states to 5548 states and 7955 transitions. [2018-07-21 19:50:55,066 INFO L78 Accepts]: Start accepts. Automaton has 5548 states and 7955 transitions. Word has length 187 [2018-07-21 19:50:55,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:50:55,068 INFO L471 AbstractCegarLoop]: Abstraction has 5548 states and 7955 transitions. [2018-07-21 19:50:55,068 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 19:50:55,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5548 states and 7955 transitions. [2018-07-21 19:50:55,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-07-21 19:50:55,081 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:50:55,081 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-21 19:50:55,082 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:50:55,082 INFO L82 PathProgramCache]: Analyzing trace with hash -797556583, now seen corresponding path program 1 times [2018-07-21 19:50:55,082 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:50:55,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:50:55,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:50:55,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:50:55,084 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:50:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:50:55,504 WARN L169 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 19:50:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 129 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-21 19:50:55,627 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:50:55,627 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 19:50:55,627 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-07-21 19:50:55,627 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], [1166], [1174], [1182], [1190], [1198], [1202], [1204], [1207], [1215], [1223], [1228], [1232], [1236], [1240], [1244], [1247], [1248], [1252], [1256], [1260], [1264], [1268], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1311], [1315], [1319], [1323], [1326], [2303], [2304], [2305], [2306], [2308], [2309] [2018-07-21 19:50:55,636 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 19:50:55,638 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 19:50:59,860 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 19:51:19,739 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-21 19:51:19,739 INFO L272 AbstractInterpreter]: Visited 102 different actions 292 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 19:51:19,744 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-21 19:51:19,744 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:51:19,744 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-21 19:51:19,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:51:19,751 INFO L282 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 19:51:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:51:19,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 19:51:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:51:19,903 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-21 19:51:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 19:51:20,157 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:51:20,158 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-21 19:51:20,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:51:20,173 INFO L282 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-21 19:51:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:51:20,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 19:51:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-21 19:51:20,444 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-21 19:51:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-21 19:51:20,808 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-07-21 19:51:20,808 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-07-21 19:51:20,808 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:51:20,809 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 19:51:20,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 19:51:20,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-07-21 19:51:20,809 INFO L87 Difference]: Start difference. First operand 5548 states and 7955 transitions. Second operand 5 states. [2018-07-21 19:51:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 19:51:24,375 INFO L93 Difference]: Finished difference Result 13318 states and 19134 transitions. [2018-07-21 19:51:24,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-21 19:51:24,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 239 [2018-07-21 19:51:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 19:51:24,419 INFO L225 Difference]: With dead ends: 13318 [2018-07-21 19:51:24,419 INFO L226 Difference]: Without dead ends: 7776 [2018-07-21 19:51:24,444 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 948 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-07-21 19:51:24,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7776 states. [2018-07-21 19:51:24,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7776 to 7773. [2018-07-21 19:51:24,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7773 states. [2018-07-21 19:51:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 9879 transitions. [2018-07-21 19:51:24,666 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 9879 transitions. Word has length 239 [2018-07-21 19:51:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 19:51:24,667 INFO L471 AbstractCegarLoop]: Abstraction has 7773 states and 9879 transitions. [2018-07-21 19:51:24,667 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 19:51:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 9879 transitions. [2018-07-21 19:51:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-07-21 19:51:24,678 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 19:51:24,678 INFO L358 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 19:51:24,678 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 19:51:24,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1563643007, now seen corresponding path program 1 times [2018-07-21 19:51:24,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 19:51:24,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:51:24,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 19:51:24,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 19:51:24,680 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 19:51:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 19:51:25,445 WARN L169 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-21 19:51:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 128 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-21 19:51:25,690 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 19:51:25,690 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 19:51:25,690 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 259 with the following transitions: [2018-07-21 19:51:25,690 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], [1166], [1174], [1182], [1190], [1198], [1202], [1204], [1207], [1215], [1223], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1255], [1256], [1260], [1264], [1268], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1311], [1315], [1319], [1323], [1327], [1331], [1342], [1346], [1350], [1354], [1358], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1408], [2303], [2304], [2305], [2306], [2308], [2309] [2018-07-21 19:51:25,697 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 19:51:25,697 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 19:51:29,772 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 19:51:34,826 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 19:51:34,826 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-07-21 19:51:34,843 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 19:51:49,689 INFO L232 lantSequenceWeakener]: Weakened 250 states. On average, predicates are now at 75.91% of their original sizes. [2018-07-21 19:51:49,690 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 19:51:50,780 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 19:51:50,781 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 19:51:50,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-07-21 19:51:50,781 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 19:51:50,782 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-21 19:51:50,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-21 19:51:50,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-07-21 19:51:50,783 INFO L87 Difference]: Start difference. First operand 7773 states and 9879 transitions. Second operand 9 states. Received shutdown request... [2018-07-21 19:53:01,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-21 19:53:01,013 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 19:53:01,017 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 19:53:01,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:53:01 BoogieIcfgContainer [2018-07-21 19:53:01,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 19:53:01,019 INFO L168 Benchmark]: Toolchain (without parser) took 203570.77 ms. Allocated memory was 307.2 MB in the beginning and 2.5 GB in the end (delta: 2.2 GB). Free memory was 242.8 MB in the beginning and 1.2 GB in the end (delta: -989.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. [2018-07-21 19:53:01,021 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 307.2 MB. Free memory is still 270.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 19:53:01,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2056.32 ms. Allocated memory was 307.2 MB in the beginning and 406.8 MB in the end (delta: 99.6 MB). Free memory was 241.8 MB in the beginning and 342.2 MB in the end (delta: -100.5 MB). Peak memory consumption was 125.2 MB. Max. memory is 5.3 GB. [2018-07-21 19:53:01,022 INFO L168 Benchmark]: Boogie Procedure Inliner took 281.28 ms. Allocated memory is still 406.8 MB. Free memory was 342.2 MB in the beginning and 294.6 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 5.3 GB. [2018-07-21 19:53:01,022 INFO L168 Benchmark]: Boogie Preprocessor took 896.09 ms. Allocated memory was 406.8 MB in the beginning and 576.2 MB in the end (delta: 169.3 MB). Free memory was 294.6 MB in the beginning and 476.3 MB in the end (delta: -181.7 MB). Peak memory consumption was 34.3 MB. Max. memory is 5.3 GB. [2018-07-21 19:53:01,023 INFO L168 Benchmark]: RCFGBuilder took 11278.12 ms. Allocated memory was 576.2 MB in the beginning and 673.7 MB in the end (delta: 97.5 MB). Free memory was 476.3 MB in the beginning and 459.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 207.3 MB. Max. memory is 5.3 GB. [2018-07-21 19:53:01,023 INFO L168 Benchmark]: TraceAbstraction took 189048.18 ms. Allocated memory was 673.7 MB in the beginning and 2.5 GB in the end (delta: 1.9 GB). Free memory was 459.3 MB in the beginning and 1.2 GB in the end (delta: -773.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-07-21 19:53:01,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 307.2 MB. Free memory is still 270.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 2056.32 ms. Allocated memory was 307.2 MB in the beginning and 406.8 MB in the end (delta: 99.6 MB). Free memory was 241.8 MB in the beginning and 342.2 MB in the end (delta: -100.5 MB). Peak memory consumption was 125.2 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 281.28 ms. Allocated memory is still 406.8 MB. Free memory was 342.2 MB in the beginning and 294.6 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 896.09 ms. Allocated memory was 406.8 MB in the beginning and 576.2 MB in the end (delta: 169.3 MB). Free memory was 294.6 MB in the beginning and 476.3 MB in the end (delta: -181.7 MB). Peak memory consumption was 34.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 11278.12 ms. Allocated memory was 576.2 MB in the beginning and 673.7 MB in the end (delta: 97.5 MB). Free memory was 476.3 MB in the beginning and 459.3 MB in the end (delta: 17.0 MB). Peak memory consumption was 207.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 189048.18 ms. Allocated memory was 673.7 MB in the beginning and 2.5 GB in the end (delta: 1.9 GB). Free memory was 459.3 MB in the beginning and 1.2 GB in the end (delta: -773.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 200]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 200). Cancelled while BasicCegarLoop was constructing difference of abstraction (7773states) and interpolant automaton (currently 9 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (6518 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 188.9s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 101.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2110 SDtfs, 5735 SDslu, 906 SDs, 0 SdLazy, 8964 SolverSat, 2808 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 79.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1540 GetRequests, 1490 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7773occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 61.5s AbstIntTime, 3 AbstIntIterations, 1 AbstIntStrong, 0.9962286740496857 AbsIntWeakeningRatio, 0.10505836575875487 AbsIntAvgWeakeningVarsNumRemoved, 30.404669260700388 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 52 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 1525 NumberOfCodeBlocks, 1525 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2138 ConstructedInterpolants, 67 QuantifiedInterpolants, 1991431 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1166 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 1271/1476 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/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label28_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_19-53-01-040.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem17_label28_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_19-53-01-040.csv Completed graceful shutdown