java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-08 16:37:48,378 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-08 16:37:48,380 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-08 16:37:48,400 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-08 16:37:48,401 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-08 16:37:48,402 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-08 16:37:48,403 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-08 16:37:48,405 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-08 16:37:48,410 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-08 16:37:48,413 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-08 16:37:48,416 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-08 16:37:48,416 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-08 16:37:48,417 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-08 16:37:48,418 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-08 16:37:48,422 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-08 16:37:48,423 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-08 16:37:48,425 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-08 16:37:48,434 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-08 16:37:48,439 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-08 16:37:48,441 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-08 16:37:48,446 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-08 16:37:48,447 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-08 16:37:48,451 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-08 16:37:48,451 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-08 16:37:48,452 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-08 16:37:48,455 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-08 16:37:48,457 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-08 16:37:48,458 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-08 16:37:48,459 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-08 16:37:48,464 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-08 16:37:48,464 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-08 16:37:48,465 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-08 16:37:48,465 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-08 16:37:48,465 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-08 16:37:48,466 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-08 16:37:48,469 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-08 16:37:48,469 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-08-08 16:37:48,497 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-08 16:37:48,497 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-08 16:37:48,498 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-08 16:37:48,499 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-08 16:37:48,499 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-08 16:37:48,500 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-08 16:37:48,500 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-08 16:37:48,500 INFO L133 SettingsManager]: * Octagon Domain=false [2018-08-08 16:37:48,500 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-08 16:37:48,501 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-08 16:37:48,501 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-08 16:37:48,502 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-08 16:37:48,502 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-08 16:37:48,503 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-08 16:37:48,503 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-08 16:37:48,503 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-08 16:37:48,503 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-08 16:37:48,504 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-08 16:37:48,504 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-08 16:37:48,504 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-08 16:37:48,504 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-08 16:37:48,506 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-08 16:37:48,506 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-08 16:37:48,506 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 16:37:48,507 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-08 16:37:48,507 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-08 16:37:48,507 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-08 16:37:48,507 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-08-08 16:37:48,507 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-08 16:37:48,508 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-08 16:37:48,508 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-08 16:37:48,508 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-08 16:37:48,508 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-08 16:37:48,575 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-08 16:37:48,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-08 16:37:48,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-08 16:37:48,595 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-08 16:37:48,595 INFO L276 PluginConnector]: CDTParser initialized [2018-08-08 16:37:48,596 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46_true-unreach-call.c [2018-08-08 16:37:48,956 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/615758614/68c1f0cfe8b44e2d8d362c1b7aab748d/FLAGa310e2110 [2018-08-08 16:37:49,483 INFO L276 CDTParser]: Found 1 translation units. [2018-08-08 16:37:49,484 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label46_true-unreach-call.c [2018-08-08 16:37:49,521 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/615758614/68c1f0cfe8b44e2d8d362c1b7aab748d/FLAGa310e2110 [2018-08-08 16:37:49,537 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/615758614/68c1f0cfe8b44e2d8d362c1b7aab748d [2018-08-08 16:37:49,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-08 16:37:49,552 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-08 16:37:49,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-08 16:37:49,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-08 16:37:49,561 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-08 16:37:49,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 04:37:49" (1/1) ... [2018-08-08 16:37:49,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11ac5447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:49, skipping insertion in model container [2018-08-08 16:37:49,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 04:37:49" (1/1) ... [2018-08-08 16:37:49,915 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-08 16:37:50,866 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 16:37:50,893 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-08 16:37:51,577 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 16:37:51,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:51 WrapperNode [2018-08-08 16:37:51,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-08 16:37:51,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-08 16:37:51,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-08 16:37:51,808 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-08 16:37:51,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:51" (1/1) ... [2018-08-08 16:37:51,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:51" (1/1) ... [2018-08-08 16:37:52,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-08 16:37:52,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-08 16:37:52,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-08 16:37:52,104 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-08 16:37:52,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:51" (1/1) ... [2018-08-08 16:37:52,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:51" (1/1) ... [2018-08-08 16:37:52,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:51" (1/1) ... [2018-08-08 16:37:52,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:51" (1/1) ... [2018-08-08 16:37:52,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:51" (1/1) ... [2018-08-08 16:37:53,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:51" (1/1) ... [2018-08-08 16:37:53,057 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:51" (1/1) ... [2018-08-08 16:37:53,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-08 16:37:53,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-08 16:37:53,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-08 16:37:53,107 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-08 16:37:53,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:51" (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 [2018-08-08 16:37:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-08 16:37:53,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-08 16:37:53,185 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 [2018-08-08 16:37:53,185 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 [2018-08-08 16:37:53,185 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 [2018-08-08 16:37:53,185 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 [2018-08-08 16:37:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-08 16:37:53,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-08 16:37:53,186 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 [2018-08-08 16:37:53,186 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 [2018-08-08 16:37:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-08 16:37:53,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-08 16:37:53,187 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 [2018-08-08 16:37:53,187 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 [2018-08-08 16:38:06,990 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-08 16:38:06,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 04:38:06 BoogieIcfgContainer [2018-08-08 16:38:06,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-08 16:38:06,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-08 16:38:06,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-08 16:38:06,995 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-08 16:38:06,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.08 04:37:49" (1/3) ... [2018-08-08 16:38:07,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e874b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 04:38:06, skipping insertion in model container [2018-08-08 16:38:07,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:37:51" (2/3) ... [2018-08-08 16:38:07,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e874b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 04:38:07, skipping insertion in model container [2018-08-08 16:38:07,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 04:38:06" (3/3) ... [2018-08-08 16:38:07,008 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label46_true-unreach-call.c [2018-08-08 16:38:07,020 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-08 16:38:07,033 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-08 16:38:07,101 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-08 16:38:07,101 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-08 16:38:07,102 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-08 16:38:07,102 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-08 16:38:07,102 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-08 16:38:07,102 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-08 16:38:07,102 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-08 16:38:07,102 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-08 16:38:07,103 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-08 16:38:07,150 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-08-08 16:38:07,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-08-08 16:38:07,160 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 16:38:07,161 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 16:38:07,163 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 16:38:07,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1973084988, now seen corresponding path program 1 times [2018-08-08 16:38:07,170 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 16:38:07,171 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 69 with the following transitions: [2018-08-08 16:38:07,174 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [2360], [2364], [2370], [2374], [3269], [3270], [3271], [3273] [2018-08-08 16:38:07,217 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-08-08 16:38:07,218 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 16:38:13,175 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 16:38:13,176 INFO L272 AbstractInterpreter]: Visited 67 different actions 67 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-08-08 16:38:13,204 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 16:38:15,587 INFO L232 lantSequenceWeakener]: Weakened 65 states. On average, predicates are now at 77.76% of their original sizes. [2018-08-08 16:38:15,587 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 16:38:15,791 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 16:38:15,793 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 16:38:15,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-08 16:38:15,793 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 16:38:15,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-08 16:38:15,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-08 16:38:15,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 16:38:15,810 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 6 states. [2018-08-08 16:38:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 16:38:26,341 INFO L93 Difference]: Finished difference Result 2448 states and 4699 transitions. [2018-08-08 16:38:26,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-08 16:38:26,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2018-08-08 16:38:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 16:38:26,375 INFO L225 Difference]: With dead ends: 2448 [2018-08-08 16:38:26,376 INFO L226 Difference]: Without dead ends: 1606 [2018-08-08 16:38:26,393 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 16:38:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2018-08-08 16:38:26,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1604. [2018-08-08 16:38:26,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-08-08 16:38:26,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2357 transitions. [2018-08-08 16:38:26,564 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2357 transitions. Word has length 68 [2018-08-08 16:38:26,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 16:38:26,565 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2357 transitions. [2018-08-08 16:38:26,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-08 16:38:26,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2357 transitions. [2018-08-08 16:38:26,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-08-08 16:38:26,580 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 16:38:26,581 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 16:38:26,581 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 16:38:26,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1293744738, now seen corresponding path program 1 times [2018-08-08 16:38:26,582 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 16:38:26,582 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 145 with the following transitions: [2018-08-08 16:38:26,584 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [518], [1374], [2360], [2364], [2370], [2374], [2376], [3269], [3270], [3271], [3273], [3274] [2018-08-08 16:38:26,592 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-08-08 16:38:26,593 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2)