java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 21:56:10,296 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 21:56:10,298 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 21:56:10,312 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 21:56:10,312 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 21:56:10,313 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 21:56:10,315 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 21:56:10,317 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 21:56:10,318 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 21:56:10,319 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 21:56:10,320 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 21:56:10,320 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 21:56:10,321 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 21:56:10,322 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 21:56:10,324 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 21:56:10,326 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 21:56:10,327 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 21:56:10,337 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 21:56:10,340 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 21:56:10,345 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 21:56:10,346 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 21:56:10,347 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 21:56:10,349 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 21:56:10,349 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 21:56:10,350 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 21:56:10,350 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 21:56:10,351 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 21:56:10,352 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 21:56:10,353 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 21:56:10,354 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 21:56:10,354 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 21:56:10,355 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 21:56:10,357 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 21:56:10,373 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 21:56:10,373 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 21:56:10,374 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 21:56:10,374 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 21:56:10,375 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 21:56:10,375 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 21:56:10,375 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 21:56:10,375 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 21:56:10,375 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 21:56:10,376 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 21:56:10,376 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 21:56:10,377 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 21:56:10,377 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 21:56:10,377 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 21:56:10,377 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 21:56:10,378 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 21:56:10,378 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 21:56:10,378 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 21:56:10,378 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 21:56:10,378 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 21:56:10,379 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 21:56:10,379 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 21:56:10,379 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 21:56:10,379 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 21:56:10,380 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 21:56:10,380 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 21:56:10,380 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 21:56:10,380 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 21:56:10,380 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 21:56:10,381 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 21:56:10,381 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 21:56:10,381 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 21:56:10,381 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 21:56:10,426 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 21:56:10,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 21:56:10,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 21:56:10,451 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 21:56:10,451 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 21:56:10,452 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label01_true-unreach-call.c [2018-07-23 21:56:10,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8eda9a83/b0ca9cfca69a45afb441548ec84a17cf/FLAG45401a409 [2018-07-23 21:56:11,165 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 21:56:11,169 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label01_true-unreach-call.c [2018-07-23 21:56:11,193 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8eda9a83/b0ca9cfca69a45afb441548ec84a17cf/FLAG45401a409 [2018-07-23 21:56:11,216 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8eda9a83/b0ca9cfca69a45afb441548ec84a17cf [2018-07-23 21:56:11,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 21:56:11,232 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 21:56:11,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 21:56:11,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 21:56:11,241 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 21:56:11,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 09:56:11" (1/1) ... [2018-07-23 21:56:11,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ed2379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:11, skipping insertion in model container [2018-07-23 21:56:11,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 09:56:11" (1/1) ... [2018-07-23 21:56:11,471 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 21:56:11,936 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 21:56:11,954 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 21:56:12,123 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 21:56:12,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:12 WrapperNode [2018-07-23 21:56:12,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 21:56:12,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 21:56:12,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 21:56:12,204 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 21:56:12,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:12" (1/1) ... [2018-07-23 21:56:12,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:12" (1/1) ... [2018-07-23 21:56:12,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 21:56:12,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 21:56:12,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 21:56:12,365 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 21:56:12,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:12" (1/1) ... [2018-07-23 21:56:12,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:12" (1/1) ... [2018-07-23 21:56:12,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:12" (1/1) ... [2018-07-23 21:56:12,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:12" (1/1) ... [2018-07-23 21:56:12,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:12" (1/1) ... [2018-07-23 21:56:12,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:12" (1/1) ... [2018-07-23 21:56:12,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:12" (1/1) ... [2018-07-23 21:56:12,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 21:56:12,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 21:56:12,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 21:56:12,826 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 21:56:12,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 21:56:12,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 21:56:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 21:56:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-23 21:56:12,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-23 21:56:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 21:56:12,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 21:56:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 21:56:12,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 21:56:18,322 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 21:56:18,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 09:56:18 BoogieIcfgContainer [2018-07-23 21:56:18,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 21:56:18,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 21:56:18,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 21:56:18,329 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 21:56:18,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 09:56:11" (1/3) ... [2018-07-23 21:56:18,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dca715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 09:56:18, skipping insertion in model container [2018-07-23 21:56:18,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 09:56:12" (2/3) ... [2018-07-23 21:56:18,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dca715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 09:56:18, skipping insertion in model container [2018-07-23 21:56:18,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 09:56:18" (3/3) ... [2018-07-23 21:56:18,334 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label01_true-unreach-call.c [2018-07-23 21:56:18,344 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 21:56:18,355 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 21:56:18,415 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 21:56:18,417 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 21:56:18,417 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 21:56:18,417 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 21:56:18,417 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 21:56:18,417 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 21:56:18,417 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 21:56:18,418 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 21:56:18,418 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 21:56:18,448 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-07-23 21:56:18,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-07-23 21:56:18,460 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 21:56:18,462 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 21:56:18,462 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 21:56:18,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1647708692, now seen corresponding path program 1 times [2018-07-23 21:56:18,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 21:56:18,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:56:18,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 21:56:18,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:56:18,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 21:56:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 21:56:19,057 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 21:56:19,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 21:56:19,099 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 21:56:19,099 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 21:56:19,100 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 21:56:19,106 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 21:56:19,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 21:56:19,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 21:56:19,126 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-07-23 21:56:21,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 21:56:21,751 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-07-23 21:56:21,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 21:56:21,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2018-07-23 21:56:21,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 21:56:21,778 INFO L225 Difference]: With dead ends: 782 [2018-07-23 21:56:21,778 INFO L226 Difference]: Without dead ends: 487 [2018-07-23 21:56:21,787 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 21:56:21,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-07-23 21:56:21,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-07-23 21:56:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-07-23 21:56:21,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-07-23 21:56:21,877 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 64 [2018-07-23 21:56:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 21:56:21,878 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-07-23 21:56:21,878 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 21:56:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-07-23 21:56:21,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-23 21:56:21,887 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 21:56:21,887 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 21:56:21,888 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 21:56:21,888 INFO L82 PathProgramCache]: Analyzing trace with hash -397396585, now seen corresponding path program 1 times [2018-07-23 21:56:21,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 21:56:21,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:56:21,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 21:56:21,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:56:21,890 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 21:56:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 21:56:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 21:56:22,625 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 21:56:22,625 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 21:56:22,626 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 21:56:22,628 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 21:56:22,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 21:56:22,630 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 21:56:22,631 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-07-23 21:56:30,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 21:56:30,268 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-07-23 21:56:30,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-23 21:56:30,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2018-07-23 21:56:30,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 21:56:30,289 INFO L225 Difference]: With dead ends: 1760 [2018-07-23 21:56:30,289 INFO L226 Difference]: Without dead ends: 1284 [2018-07-23 21:56:30,298 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-07-23 21:56:30,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-07-23 21:56:30,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-07-23 21:56:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-07-23 21:56:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-07-23 21:56:30,415 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 139 [2018-07-23 21:56:30,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 21:56:30,416 INFO L471 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-07-23 21:56:30,416 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 21:56:30,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-07-23 21:56:30,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-23 21:56:30,436 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 21:56:30,436 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 21:56:30,437 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 21:56:30,437 INFO L82 PathProgramCache]: Analyzing trace with hash -98582616, now seen corresponding path program 1 times [2018-07-23 21:56:30,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 21:56:30,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:56:30,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 21:56:30,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:56:30,439 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 21:56:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 21:56:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 114 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 21:56:30,771 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 21:56:30,772 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 21:56:30,773 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-07-23 21:56:30,775 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-07-23 21:56:30,856 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 21:56:30,856 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 21:56:38,255 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 21:56:38,257 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-07-23 21:56:38,279 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 21:56:44,332 INFO L232 lantSequenceWeakener]: Weakened 204 states. On average, predicates are now at 73.93% of their original sizes. [2018-07-23 21:56:44,332 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 21:56:44,779 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 21:56:44,781 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 21:56:44,781 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 21:56:44,781 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 21:56:44,782 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 21:56:44,782 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 21:56:44,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 21:56:44,783 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 7 states. [2018-07-23 21:57:12,118 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 21:57:51,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 21:57:51,475 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-07-23 21:57:51,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 21:57:51,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2018-07-23 21:57:51,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 21:57:51,481 INFO L225 Difference]: With dead ends: 2260 [2018-07-23 21:57:51,481 INFO L226 Difference]: Without dead ends: 1229 [2018-07-23 21:57:51,484 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-23 21:57:51,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-07-23 21:57:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-07-23 21:57:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-07-23 21:57:51,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-07-23 21:57:51,518 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 212 [2018-07-23 21:57:51,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 21:57:51,519 INFO L471 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-07-23 21:57:51,519 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 21:57:51,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-07-23 21:57:51,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-07-23 21:57:51,524 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 21:57:51,524 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 21:57:51,524 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 21:57:51,524 INFO L82 PathProgramCache]: Analyzing trace with hash 837661454, now seen corresponding path program 1 times [2018-07-23 21:57:51,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 21:57:51,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:57:51,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 21:57:51,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 21:57:51,526 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 21:57:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 21:57:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-23 21:57:52,434 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 21:57:52,434 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 21:57:52,434 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-07-23 21:57:52,435 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-07-23 21:57:52,445 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 21:57:52,445 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 21:58:18,029 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown