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/Problem12_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 22:16:42,419 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 22:16:42,421 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 22:16:42,437 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 22:16:42,437 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 22:16:42,438 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 22:16:42,439 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 22:16:42,441 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 22:16:42,442 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 22:16:42,443 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 22:16:42,444 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 22:16:42,444 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 22:16:42,445 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 22:16:42,446 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 22:16:42,447 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 22:16:42,448 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 22:16:42,449 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 22:16:42,451 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 22:16:42,453 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 22:16:42,455 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 22:16:42,456 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 22:16:42,457 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 22:16:42,462 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 22:16:42,463 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 22:16:42,463 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 22:16:42,464 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 22:16:42,465 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 22:16:42,466 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 22:16:42,472 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 22:16:42,474 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 22:16:42,474 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 22:16:42,475 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 22:16:42,475 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 22:16:42,475 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 22:16:42,478 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 22:16:42,479 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 22:16:42,479 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 22:16:42,508 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 22:16:42,508 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 22:16:42,509 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 22:16:42,509 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 22:16:42,510 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 22:16:42,510 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 22:16:42,510 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 22:16:42,510 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 22:16:42,511 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 22:16:42,511 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 22:16:42,511 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 22:16:42,512 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 22:16:42,512 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 22:16:42,512 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 22:16:42,512 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 22:16:42,512 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 22:16:42,513 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 22:16:42,513 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 22:16:42,513 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 22:16:42,513 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 22:16:42,514 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 22:16:42,514 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 22:16:42,514 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 22:16:42,514 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 22:16:42,515 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 22:16:42,515 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 22:16:42,515 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 22:16:42,515 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 22:16:42,516 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 22:16:42,516 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 22:16:42,516 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 22:16:42,516 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 22:16:42,518 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 22:16:42,563 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 22:16:42,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 22:16:42,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 22:16:42,590 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 22:16:42,590 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 22:16:42,591 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-07-23 22:16:42,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32640ac9b/7122b8c003674fa189ee5e97f2f82c07/FLAG0e4a87b98 [2018-07-23 22:16:43,490 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 22:16:43,491 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label54_true-unreach-call.c [2018-07-23 22:16:43,530 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32640ac9b/7122b8c003674fa189ee5e97f2f82c07/FLAG0e4a87b98 [2018-07-23 22:16:43,557 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32640ac9b/7122b8c003674fa189ee5e97f2f82c07 [2018-07-23 22:16:43,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 22:16:43,572 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 22:16:43,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 22:16:43,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 22:16:43,583 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 22:16:43,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:16:43" (1/1) ... [2018-07-23 22:16:43,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610c9823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:43, skipping insertion in model container [2018-07-23 22:16:43,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:16:43" (1/1) ... [2018-07-23 22:16:44,011 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 22:16:45,040 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:16:45,059 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 22:16:45,678 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:16:45,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:45 WrapperNode [2018-07-23 22:16:45,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 22:16:45,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 22:16:45,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 22:16:45,926 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 22:16:45,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:45" (1/1) ... [2018-07-23 22:16:46,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:45" (1/1) ... [2018-07-23 22:16:46,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 22:16:46,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 22:16:46,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 22:16:46,232 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 22:16:46,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:45" (1/1) ... [2018-07-23 22:16:46,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:45" (1/1) ... [2018-07-23 22:16:46,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:45" (1/1) ... [2018-07-23 22:16:46,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:45" (1/1) ... [2018-07-23 22:16:46,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:45" (1/1) ... [2018-07-23 22:16:47,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:45" (1/1) ... [2018-07-23 22:16:47,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:45" (1/1) ... [2018-07-23 22:16:47,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 22:16:47,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 22:16:47,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 22:16:47,131 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 22:16:47,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:45" (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 22:16:47,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 22:16:47,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 22:16:47,205 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 22:16:47,206 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 22:16:47,206 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_output3 [2018-07-23 22:16:47,206 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_output3 [2018-07-23 22:16:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 22:16:47,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 22:16:47,207 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_output4 [2018-07-23 22:16:47,207 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_output4 [2018-07-23 22:16:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 22:16:47,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 22:16:47,208 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_output2 [2018-07-23 22:16:47,209 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_output2 [2018-07-23 22:16:57,265 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 22:16:57,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:16:57 BoogieIcfgContainer [2018-07-23 22:16:57,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 22:16:57,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 22:16:57,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 22:16:57,270 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 22:16:57,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 10:16:43" (1/3) ... [2018-07-23 22:16:57,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@825e2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:16:57, skipping insertion in model container [2018-07-23 22:16:57,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:16:45" (2/3) ... [2018-07-23 22:16:57,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@825e2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:16:57, skipping insertion in model container [2018-07-23 22:16:57,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:16:57" (3/3) ... [2018-07-23 22:16:57,273 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label54_true-unreach-call.c [2018-07-23 22:16:57,282 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 22:16:57,294 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 22:16:57,352 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 22:16:57,353 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 22:16:57,353 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 22:16:57,353 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 22:16:57,353 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 22:16:57,354 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 22:16:57,354 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 22:16:57,354 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 22:16:57,354 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 22:16:57,395 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-23 22:16:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-23 22:16:57,403 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:16:57,404 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] [2018-07-23 22:16:57,404 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 22:16:57,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1399102452, now seen corresponding path program 1 times [2018-07-23 22:16:57,415 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:16:57,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:16:57,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:16:57,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:16:57,469 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:16:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:16:57,906 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 22:16:57,984 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 22:16:57,986 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:16:57,986 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 22:16:57,986 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:16:57,992 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 22:16:58,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 22:16:58,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 22:16:58,006 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-23 22:17:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:17:06,162 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-23 22:17:06,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 22:17:06,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-07-23 22:17:06,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:17:06,216 INFO L225 Difference]: With dead ends: 2446 [2018-07-23 22:17:06,216 INFO L226 Difference]: Without dead ends: 1604 [2018-07-23 22:17:06,233 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 22:17:06,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-23 22:17:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-23 22:17:06,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-23 22:17:06,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-07-23 22:17:06,428 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 40 [2018-07-23 22:17:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:17:06,429 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-07-23 22:17:06,429 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 22:17:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-07-23 22:17:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-23 22:17:06,436 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:17:06,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:06,437 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 22:17:06,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1572758482, now seen corresponding path program 1 times [2018-07-23 22:17:06,438 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:17:06,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:17:06,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:17:06,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:17:06,440 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:17:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:17:06,855 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 22:17:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:17:07,190 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:17:07,190 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 22:17:07,190 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:17:07,192 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 22:17:07,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 22:17:07,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 22:17:07,193 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 6 states. [2018-07-23 22:17:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:17:23,784 INFO L93 Difference]: Finished difference Result 4793 states and 8579 transitions. [2018-07-23 22:17:23,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:17:23,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-07-23 22:17:23,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:17:23,818 INFO L225 Difference]: With dead ends: 4793 [2018-07-23 22:17:23,818 INFO L226 Difference]: Without dead ends: 3195 [2018-07-23 22:17:23,825 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 22:17:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2018-07-23 22:17:23,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 3176. [2018-07-23 22:17:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3176 states. [2018-07-23 22:17:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3176 states to 3176 states and 4866 transitions. [2018-07-23 22:17:23,932 INFO L78 Accepts]: Start accepts. Automaton has 3176 states and 4866 transitions. Word has length 114 [2018-07-23 22:17:23,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:17:23,933 INFO L471 AbstractCegarLoop]: Abstraction has 3176 states and 4866 transitions. [2018-07-23 22:17:23,933 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 22:17:23,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3176 states and 4866 transitions. [2018-07-23 22:17:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-07-23 22:17:23,936 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:17:23,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:23,937 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 22:17:23,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1601416815, now seen corresponding path program 1 times [2018-07-23 22:17:23,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:17:23,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:17:23,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:17:23,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:17:23,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:17:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:17:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:17:24,485 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:17:24,485 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 22:17:24,485 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:17:24,486 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 22:17:24,486 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 22:17:24,486 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 22:17:24,486 INFO L87 Difference]: Start difference. First operand 3176 states and 4866 transitions. Second operand 6 states. [2018-07-23 22:17:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:17:41,434 INFO L93 Difference]: Finished difference Result 11182 states and 17464 transitions. [2018-07-23 22:17:41,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 22:17:41,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-07-23 22:17:41,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:17:41,489 INFO L225 Difference]: With dead ends: 11182 [2018-07-23 22:17:41,489 INFO L226 Difference]: Without dead ends: 8012 [2018-07-23 22:17:41,505 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 22:17:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2018-07-23 22:17:41,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 7928. [2018-07-23 22:17:41,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7928 states. [2018-07-23 22:17:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7928 states to 7928 states and 11779 transitions. [2018-07-23 22:17:41,729 INFO L78 Accepts]: Start accepts. Automaton has 7928 states and 11779 transitions. Word has length 119 [2018-07-23 22:17:41,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:17:41,729 INFO L471 AbstractCegarLoop]: Abstraction has 7928 states and 11779 transitions. [2018-07-23 22:17:41,729 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 22:17:41,730 INFO L276 IsEmpty]: Start isEmpty. Operand 7928 states and 11779 transitions. [2018-07-23 22:17:41,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-07-23 22:17:41,733 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:17:41,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:41,734 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 22:17:41,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1773790607, now seen corresponding path program 1 times [2018-07-23 22:17:41,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:17:41,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:17:41,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:17:41,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:17:41,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:17:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:17:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:17:42,013 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:17:42,013 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 22:17:42,013 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:17:42,014 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 22:17:42,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 22:17:42,014 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-23 22:17:42,014 INFO L87 Difference]: Start difference. First operand 7928 states and 11779 transitions. Second operand 5 states. [2018-07-23 22:17:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:17:51,305 INFO L93 Difference]: Finished difference Result 24395 states and 37129 transitions. [2018-07-23 22:17:51,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 22:17:51,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-07-23 22:17:51,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:17:51,387 INFO L225 Difference]: With dead ends: 24395 [2018-07-23 22:17:51,387 INFO L226 Difference]: Without dead ends: 16473 [2018-07-23 22:17:51,415 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 22:17:51,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16473 states. [2018-07-23 22:17:51,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16473 to 16259. [2018-07-23 22:17:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16259 states. [2018-07-23 22:17:51,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16259 states to 16259 states and 22917 transitions. [2018-07-23 22:17:51,862 INFO L78 Accepts]: Start accepts. Automaton has 16259 states and 22917 transitions. Word has length 135 [2018-07-23 22:17:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:17:51,863 INFO L471 AbstractCegarLoop]: Abstraction has 16259 states and 22917 transitions. [2018-07-23 22:17:51,863 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 22:17:51,863 INFO L276 IsEmpty]: Start isEmpty. Operand 16259 states and 22917 transitions. [2018-07-23 22:17:51,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-23 22:17:51,866 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:17:51,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:51,871 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:17:51,871 INFO L82 PathProgramCache]: Analyzing trace with hash 708226614, now seen corresponding path program 1 times [2018-07-23 22:17:51,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:17:51,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:17:51,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:17:51,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:17:51,873 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:17:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:17:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:17:52,228 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:17:52,228 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 22:17:52,229 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:17:52,229 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 22:17:52,229 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 22:17:52,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 22:17:52,230 INFO L87 Difference]: Start difference. First operand 16259 states and 22917 transitions. Second operand 5 states. [2018-07-23 22:18:14,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:18:14,145 INFO L93 Difference]: Finished difference Result 59069 states and 87214 transitions. [2018-07-23 22:18:14,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 22:18:14,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-07-23 22:18:14,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:18:14,325 INFO L225 Difference]: With dead ends: 59069 [2018-07-23 22:18:14,325 INFO L226 Difference]: Without dead ends: 42816 [2018-07-23 22:18:14,421 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 22:18:14,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42816 states. [2018-07-23 22:18:15,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42816 to 42307. [2018-07-23 22:18:15,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42307 states. [2018-07-23 22:18:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42307 states to 42307 states and 56729 transitions. [2018-07-23 22:18:15,611 INFO L78 Accepts]: Start accepts. Automaton has 42307 states and 56729 transitions. Word has length 144 [2018-07-23 22:18:15,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:18:15,611 INFO L471 AbstractCegarLoop]: Abstraction has 42307 states and 56729 transitions. [2018-07-23 22:18:15,611 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 22:18:15,611 INFO L276 IsEmpty]: Start isEmpty. Operand 42307 states and 56729 transitions. [2018-07-23 22:18:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-07-23 22:18:15,617 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:18:15,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:18:15,618 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:18:15,618 INFO L82 PathProgramCache]: Analyzing trace with hash 233799721, now seen corresponding path program 1 times [2018-07-23 22:18:15,618 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:18:15,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:18:15,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:18:15,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:18:15,619 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:18:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:18:15,925 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 22:18:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:18:16,377 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:18:16,377 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 22:18:16,377 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:18:16,378 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 22:18:16,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 22:18:16,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 22:18:16,378 INFO L87 Difference]: Start difference. First operand 42307 states and 56729 transitions. Second operand 6 states. [2018-07-23 22:18:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:18:33,904 INFO L93 Difference]: Finished difference Result 110127 states and 155521 transitions. [2018-07-23 22:18:33,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:18:33,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2018-07-23 22:18:33,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:18:34,124 INFO L225 Difference]: With dead ends: 110127 [2018-07-23 22:18:34,125 INFO L226 Difference]: Without dead ends: 67826 [2018-07-23 22:18:34,236 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 22:18:34,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67826 states. [2018-07-23 22:18:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67826 to 67437. [2018-07-23 22:18:35,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67437 states. [2018-07-23 22:18:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67437 states to 67437 states and 90904 transitions. [2018-07-23 22:18:35,455 INFO L78 Accepts]: Start accepts. Automaton has 67437 states and 90904 transitions. Word has length 203 [2018-07-23 22:18:35,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:18:35,457 INFO L471 AbstractCegarLoop]: Abstraction has 67437 states and 90904 transitions. [2018-07-23 22:18:35,457 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 22:18:35,457 INFO L276 IsEmpty]: Start isEmpty. Operand 67437 states and 90904 transitions. [2018-07-23 22:18:35,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-07-23 22:18:35,466 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:18:35,467 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-23 22:18:35,467 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:18:35,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1869125427, now seen corresponding path program 1 times [2018-07-23 22:18:35,468 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:18:35,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:18:35,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:18:35,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:18:35,470 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:18:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:18:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:18:35,947 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:18:35,947 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:18:35,948 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-07-23 22:18:35,951 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], [221], [223], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [518], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [714], [1374], [2360], [2364], [2370], [2374], [2376], [3269], [3270], [3271], [3273], [3274] [2018-07-23 22:18:36,025 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:18:36,025 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2)