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/Problem18_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 20:41:55,384 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 20:41:55,386 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 20:41:55,403 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 20:41:55,404 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 20:41:55,405 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 20:41:55,406 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 20:41:55,412 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 20:41:55,414 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 20:41:55,417 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 20:41:55,417 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 20:41:55,418 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 20:41:55,418 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 20:41:55,421 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 20:41:55,422 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 20:41:55,423 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 20:41:55,426 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 20:41:55,428 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 20:41:55,436 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 20:41:55,438 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 20:41:55,439 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 20:41:55,440 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 20:41:55,443 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 20:41:55,443 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 20:41:55,443 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 20:41:55,444 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 20:41:55,445 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 20:41:55,446 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 20:41:55,446 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 20:41:55,447 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 20:41:55,447 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 20:41:55,448 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 20:41:55,448 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 20:41:55,448 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 20:41:55,449 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 20:41:55,450 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 20:41:55,450 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 20:41:55,465 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 20:41:55,466 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 20:41:55,466 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 20:41:55,467 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 20:41:55,467 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 20:41:55,467 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 20:41:55,467 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 20:41:55,467 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 20:41:55,467 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 20:41:55,468 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 20:41:55,468 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 20:41:55,468 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 20:41:55,469 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 20:41:55,470 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 20:41:55,470 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 20:41:55,470 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 20:41:55,470 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 20:41:55,470 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 20:41:55,471 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 20:41:55,471 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 20:41:55,471 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 20:41:55,471 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 20:41:55,471 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 20:41:55,471 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 20:41:55,472 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 20:41:55,472 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 20:41:55,472 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 20:41:55,472 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 20:41:55,472 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 20:41:55,473 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 20:41:55,474 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 20:41:55,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 20:41:55,474 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 20:41:55,475 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 20:41:55,475 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 20:41:55,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 20:41:55,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 20:41:55,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 20:41:55,546 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 20:41:55,546 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 20:41:55,547 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label48_true-unreach-call.c [2018-07-21 20:41:55,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d86b53063/d7735da7922f4e019b63c8e7d53d0ade/FLAGe38865540 [2018-07-21 20:41:56,445 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 20:41:56,446 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label48_true-unreach-call.c [2018-07-21 20:41:57,069 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d86b53063/d7735da7922f4e019b63c8e7d53d0ade/FLAGe38865540 [2018-07-21 20:41:57,447 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/d86b53063/d7735da7922f4e019b63c8e7d53d0ade [2018-07-21 20:41:57,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 20:41:57,461 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 20:41:57,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 20:41:57,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 20:41:57,470 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 20:41:57,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:41:57" (1/1) ... [2018-07-21 20:41:57,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a1f4471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:57, skipping insertion in model container [2018-07-21 20:41:57,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:41:57" (1/1) ... [2018-07-21 20:41:57,817 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 20:41:58,809 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 20:41:58,829 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 20:41:59,434 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 20:41:59,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:59 WrapperNode [2018-07-21 20:41:59,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 20:41:59,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 20:41:59,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 20:41:59,587 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 20:41:59,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:59" (1/1) ... [2018-07-21 20:41:59,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:59" (1/1) ... [2018-07-21 20:41:59,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 20:41:59,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 20:41:59,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 20:41:59,840 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 20:41:59,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:59" (1/1) ... [2018-07-21 20:41:59,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:59" (1/1) ... [2018-07-21 20:41:59,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:59" (1/1) ... [2018-07-21 20:41:59,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:59" (1/1) ... [2018-07-21 20:42:00,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:59" (1/1) ... [2018-07-21 20:42:00,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:59" (1/1) ... [2018-07-21 20:42:00,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:59" (1/1) ... [2018-07-21 20:42:00,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 20:42:00,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 20:42:00,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 20:42:00,551 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 20:42:00,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:59" (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 20:42:00,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 20:42:00,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 20:42:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-21 20:42:00,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-21 20:42:00,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 20:42:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 20:42:00,624 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 20:42:00,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 20:42:00,624 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 20:42:00,624 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 20:42:00,624 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 20:42:00,625 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 20:42:10,384 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 20:42:10,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:42:10 BoogieIcfgContainer [2018-07-21 20:42:10,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 20:42:10,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 20:42:10,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 20:42:10,390 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 20:42:10,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:41:57" (1/3) ... [2018-07-21 20:42:10,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3898efe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:42:10, skipping insertion in model container [2018-07-21 20:42:10,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:41:59" (2/3) ... [2018-07-21 20:42:10,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3898efe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:42:10, skipping insertion in model container [2018-07-21 20:42:10,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:42:10" (3/3) ... [2018-07-21 20:42:10,394 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label48_true-unreach-call.c [2018-07-21 20:42:10,402 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 20:42:10,411 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 20:42:10,482 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 20:42:10,483 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 20:42:10,483 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 20:42:10,483 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 20:42:10,483 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 20:42:10,483 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 20:42:10,483 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 20:42:10,483 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 20:42:10,484 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 20:42:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-07-21 20:42:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-07-21 20:42:10,550 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:42:10,551 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] [2018-07-21 20:42:10,551 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 20:42:10,556 INFO L82 PathProgramCache]: Analyzing trace with hash -639767913, now seen corresponding path program 1 times [2018-07-21 20:42:10,558 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:42:10,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:42:10,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:42:10,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:42:10,609 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:42:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:42:11,082 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 20:42:11,210 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 20:42:11,212 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:42:11,213 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 20:42:11,213 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:42:11,217 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 20:42:11,232 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 20:42:11,233 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 20:42:11,235 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-07-21 20:42:16,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:42:16,588 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-07-21 20:42:16,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 20:42:16,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-07-21 20:42:16,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:42:16,644 INFO L225 Difference]: With dead ends: 2251 [2018-07-21 20:42:16,644 INFO L226 Difference]: Without dead ends: 1474 [2018-07-21 20:42:16,654 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 20:42:16,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-07-21 20:42:16,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-07-21 20:42:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-07-21 20:42:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-07-21 20:42:16,823 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 61 [2018-07-21 20:42:16,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:42:16,824 INFO L471 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-07-21 20:42:16,824 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 20:42:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-07-21 20:42:16,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-07-21 20:42:16,834 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:42:16,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:16,835 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 20:42:16,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1133581273, now seen corresponding path program 1 times [2018-07-21 20:42:16,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:42:16,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:42:16,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:42:16,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:42:16,837 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:42:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:42:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:42:17,129 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:42:17,129 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 20:42:17,130 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:42:17,132 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 20:42:17,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 20:42:17,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 20:42:17,133 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-07-21 20:42:26,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:42:26,975 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-07-21 20:42:26,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 20:42:26,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-07-21 20:42:26,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:42:26,999 INFO L225 Difference]: With dead ends: 4419 [2018-07-21 20:42:26,999 INFO L226 Difference]: Without dead ends: 2951 [2018-07-21 20:42:27,005 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 20:42:27,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-07-21 20:42:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-07-21 20:42:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-07-21 20:42:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-07-21 20:42:27,137 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 150 [2018-07-21 20:42:27,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:42:27,138 INFO L471 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-07-21 20:42:27,138 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 20:42:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-07-21 20:42:27,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-07-21 20:42:27,157 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:42:27,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:27,157 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 20:42:27,157 INFO L82 PathProgramCache]: Analyzing trace with hash 338110572, now seen corresponding path program 1 times [2018-07-21 20:42:27,158 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:42:27,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:42:27,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:42:27,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:42:27,159 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:42:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:42:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:42:27,557 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:42:27,557 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 20:42:27,557 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:42:27,558 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 20:42:27,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 20:42:27,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 20:42:27,559 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-07-21 20:42:31,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:42:31,989 INFO L93 Difference]: Finished difference Result 6669 states and 11522 transitions. [2018-07-21 20:42:32,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 20:42:32,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2018-07-21 20:42:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:42:32,045 INFO L225 Difference]: With dead ends: 6669 [2018-07-21 20:42:32,046 INFO L226 Difference]: Without dead ends: 3747 [2018-07-21 20:42:32,057 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 20:42:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2018-07-21 20:42:32,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3689. [2018-07-21 20:42:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3689 states. [2018-07-21 20:42:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5891 transitions. [2018-07-21 20:42:32,207 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5891 transitions. Word has length 197 [2018-07-21 20:42:32,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:42:32,208 INFO L471 AbstractCegarLoop]: Abstraction has 3689 states and 5891 transitions. [2018-07-21 20:42:32,208 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 20:42:32,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5891 transitions. [2018-07-21 20:42:32,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-07-21 20:42:32,214 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:42:32,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:32,214 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 20:42:32,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1268872464, now seen corresponding path program 1 times [2018-07-21 20:42:32,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:42:32,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:42:32,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:42:32,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:42:32,217 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:42:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:42:32,711 WARN L169 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 20:42:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:42:32,765 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:42:32,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 20:42:32,765 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:42:32,765 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 20:42:32,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 20:42:32,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 20:42:32,766 INFO L87 Difference]: Start difference. First operand 3689 states and 5891 transitions. Second operand 6 states. [2018-07-21 20:42:36,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:42:36,788 INFO L93 Difference]: Finished difference Result 9623 states and 15373 transitions. [2018-07-21 20:42:36,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 20:42:36,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2018-07-21 20:42:36,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:42:36,820 INFO L225 Difference]: With dead ends: 9623 [2018-07-21 20:42:36,820 INFO L226 Difference]: Without dead ends: 5940 [2018-07-21 20:42:36,831 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 20:42:36,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2018-07-21 20:42:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5889. [2018-07-21 20:42:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5889 states. [2018-07-21 20:42:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5889 states to 5889 states and 8064 transitions. [2018-07-21 20:42:37,029 INFO L78 Accepts]: Start accepts. Automaton has 5889 states and 8064 transitions. Word has length 199 [2018-07-21 20:42:37,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:42:37,030 INFO L471 AbstractCegarLoop]: Abstraction has 5889 states and 8064 transitions. [2018-07-21 20:42:37,030 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 20:42:37,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5889 states and 8064 transitions. [2018-07-21 20:42:37,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-07-21 20:42:37,037 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:42:37,038 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, 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] [2018-07-21 20:42:37,038 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 20:42:37,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1674926163, now seen corresponding path program 1 times [2018-07-21 20:42:37,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:42:37,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:42:37,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:42:37,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:42:37,040 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:42:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:42:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-21 20:42:37,356 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 20:42:37,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-21 20:42:37,357 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:42:37,358 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-21 20:42:37,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-21 20:42:37,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-21 20:42:37,359 INFO L87 Difference]: Start difference. First operand 5889 states and 8064 transitions. Second operand 4 states. [2018-07-21 20:42:43,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 20:42:43,133 INFO L93 Difference]: Finished difference Result 23211 states and 32875 transitions. [2018-07-21 20:42:43,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-21 20:42:43,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2018-07-21 20:42:43,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 20:42:43,222 INFO L225 Difference]: With dead ends: 23211 [2018-07-21 20:42:43,223 INFO L226 Difference]: Without dead ends: 17328 [2018-07-21 20:42:43,258 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 20:42:43,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17328 states. [2018-07-21 20:42:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17328 to 17328. [2018-07-21 20:42:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17328 states. [2018-07-21 20:42:43,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17328 states to 17328 states and 23091 transitions. [2018-07-21 20:42:43,897 INFO L78 Accepts]: Start accepts. Automaton has 17328 states and 23091 transitions. Word has length 257 [2018-07-21 20:42:43,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 20:42:43,898 INFO L471 AbstractCegarLoop]: Abstraction has 17328 states and 23091 transitions. [2018-07-21 20:42:43,898 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-21 20:42:43,898 INFO L276 IsEmpty]: Start isEmpty. Operand 17328 states and 23091 transitions. [2018-07-21 20:42:43,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-07-21 20:42:43,943 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 20:42:43,943 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, 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, 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, 1, 1, 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 20:42:43,943 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 20:42:43,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1833470258, now seen corresponding path program 1 times [2018-07-21 20:42:43,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 20:42:43,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:42:43,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 20:42:43,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 20:42:43,947 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 20:42:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 20:42:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 20:42:44,903 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 20:42:44,903 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 20:42:44,904 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 463 with the following transitions: [2018-07-21 20:42:44,908 INFO L201 CegarAbsIntRunner]: [0], [1], [743], [747], [753], [757], [759], [1648], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2035], [2037], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2120], [2128], [2136], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2352], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2972], [3020], [3021], [3022], [3023], [3025], [3026] [2018-07-21 20:42:45,001 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 20:42:45,001 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 20:43:18,334 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 20:43:18,336 INFO L272 AbstractInterpreter]: Visited 283 different actions 283 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-21 20:43:18,375 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 20:43:33,922 INFO L232 lantSequenceWeakener]: Weakened 454 states. On average, predicates are now at 77.75% of their original sizes. [2018-07-21 20:43:33,923 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 20:43:34,612 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 20:43:34,613 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 20:43:34,613 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-07-21 20:43:34,614 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 20:43:34,614 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-21 20:43:34,615 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-21 20:43:34,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-21 20:43:34,615 INFO L87 Difference]: Start difference. First operand 17328 states and 23091 transitions. Second operand 8 states. [2018-07-21 20:43:52,500 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