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_INT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-08 09:08:11,050 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-08 09:08:11,053 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-08 09:08:11,065 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-08 09:08:11,065 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-08 09:08:11,066 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-08 09:08:11,067 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-08 09:08:11,069 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-08 09:08:11,071 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-08 09:08:11,072 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-08 09:08:11,073 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-08 09:08:11,073 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-08 09:08:11,074 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-08 09:08:11,075 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-08 09:08:11,076 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-08 09:08:11,077 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-08 09:08:11,078 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-08 09:08:11,080 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-08 09:08:11,082 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-08 09:08:11,084 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-08 09:08:11,085 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-08 09:08:11,087 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-08 09:08:11,089 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-08 09:08:11,089 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-08 09:08:11,090 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-08 09:08:11,091 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-08 09:08:11,092 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-08 09:08:11,093 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-08 09:08:11,096 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-08 09:08:11,097 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-08 09:08:11,097 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-08 09:08:11,104 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-08 09:08:11,105 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-08 09:08:11,105 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-08 09:08:11,106 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-08 09:08:11,107 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-08 09:08:11,107 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-08-08 09:08:11,135 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-08 09:08:11,135 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-08 09:08:11,140 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-08 09:08:11,141 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-08 09:08:11,141 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-08 09:08:11,141 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-08 09:08:11,141 INFO L133 SettingsManager]: * Congruence Domain=false [2018-08-08 09:08:11,142 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-08 09:08:11,142 INFO L133 SettingsManager]: * Octagon Domain=false [2018-08-08 09:08:11,142 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-08-08 09:08:11,142 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-08 09:08:11,142 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-08 09:08:11,143 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-08 09:08:11,144 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-08 09:08:11,145 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-08 09:08:11,145 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-08 09:08:11,145 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-08 09:08:11,145 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-08 09:08:11,145 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-08 09:08:11,145 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-08 09:08:11,146 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-08 09:08:11,146 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-08 09:08:11,146 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-08 09:08:11,146 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-08 09:08:11,147 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 09:08:11,147 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-08 09:08:11,147 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-08 09:08:11,147 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-08 09:08:11,150 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-08-08 09:08:11,150 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-08 09:08:11,150 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-08 09:08:11,150 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-08 09:08:11,150 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-08 09:08:11,151 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-08 09:08:11,219 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-08 09:08:11,235 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-08 09:08:11,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-08 09:08:11,243 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-08 09:08:11,243 INFO L276 PluginConnector]: CDTParser initialized [2018-08-08 09:08:11,244 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label25_true-unreach-call.c [2018-08-08 09:08:11,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4566ef8cb/7c324809192345fb9004a14cd39fd443/FLAGe4f58c35f [2018-08-08 09:08:11,981 INFO L276 CDTParser]: Found 1 translation units. [2018-08-08 09:08:11,983 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label25_true-unreach-call.c [2018-08-08 09:08:12,011 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4566ef8cb/7c324809192345fb9004a14cd39fd443/FLAGe4f58c35f [2018-08-08 09:08:12,035 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4566ef8cb/7c324809192345fb9004a14cd39fd443 [2018-08-08 09:08:12,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-08 09:08:12,050 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-08 09:08:12,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-08 09:08:12,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-08 09:08:12,059 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-08 09:08:12,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 09:08:12" (1/1) ... [2018-08-08 09:08:12,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a5be7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:12, skipping insertion in model container [2018-08-08 09:08:12,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 09:08:12" (1/1) ... [2018-08-08 09:08:12,328 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-08 09:08:12,853 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 09:08:12,874 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-08 09:08:13,168 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 09:08:13,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:13 WrapperNode [2018-08-08 09:08:13,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-08 09:08:13,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-08 09:08:13,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-08 09:08:13,273 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-08 09:08:13,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:13" (1/1) ... [2018-08-08 09:08:13,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:13" (1/1) ... [2018-08-08 09:08:13,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-08 09:08:13,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-08 09:08:13,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-08 09:08:13,487 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-08 09:08:13,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:13" (1/1) ... [2018-08-08 09:08:13,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:13" (1/1) ... [2018-08-08 09:08:13,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:13" (1/1) ... [2018-08-08 09:08:13,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:13" (1/1) ... [2018-08-08 09:08:13,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:13" (1/1) ... [2018-08-08 09:08:13,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:13" (1/1) ... [2018-08-08 09:08:14,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:13" (1/1) ... [2018-08-08 09:08:14,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-08 09:08:14,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-08 09:08:14,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-08 09:08:14,033 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-08 09:08:14,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:13" (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 09:08:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-08 09:08:14,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-08 09:08:14,128 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 09:08:14,128 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 09:08:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-08 09:08:14,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-08 09:08:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-08 09:08:14,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-08 09:08:14,129 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 09:08:14,129 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 09:08:20,669 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-08 09:08:20,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 09:08:20 BoogieIcfgContainer [2018-08-08 09:08:20,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-08 09:08:20,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-08 09:08:20,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-08 09:08:20,675 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-08 09:08:20,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.08 09:08:12" (1/3) ... [2018-08-08 09:08:20,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465982bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 09:08:20, skipping insertion in model container [2018-08-08 09:08:20,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 09:08:13" (2/3) ... [2018-08-08 09:08:20,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@465982bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 09:08:20, skipping insertion in model container [2018-08-08 09:08:20,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 09:08:20" (3/3) ... [2018-08-08 09:08:20,679 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label25_true-unreach-call.c [2018-08-08 09:08:20,690 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-08 09:08:20,700 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-08 09:08:20,754 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-08 09:08:20,755 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-08 09:08:20,755 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-08 09:08:20,755 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-08 09:08:20,755 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-08 09:08:20,755 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-08 09:08:20,756 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-08 09:08:20,756 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-08 09:08:20,756 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-08 09:08:20,788 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-08-08 09:08:20,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-08-08 09:08:20,798 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 09:08:20,800 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] [2018-08-08 09:08:20,801 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 09:08:20,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1176806873, now seen corresponding path program 1 times [2018-08-08 09:08:20,808 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 09:08:20,809 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 58 with the following transitions: [2018-08-08 09:08:20,812 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], [357], [359], [1378], [1382], [1388], [1392], [1579], [1580], [1581], [1583] [2018-08-08 09:08:20,853 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-08-08 09:08:20,854 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 09:08:24,473 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 09:08:24,474 INFO L272 AbstractInterpreter]: Visited 56 different actions 56 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-08-08 09:08:24,491 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 09:08:25,418 INFO L232 lantSequenceWeakener]: Weakened 54 states. On average, predicates are now at 80.27% of their original sizes. [2018-08-08 09:08:25,419 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 09:08:25,652 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 09:08:25,653 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 09:08:25,654 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-08 09:08:25,654 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 09:08:25,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-08 09:08:25,666 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-08 09:08:25,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 09:08:25,670 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 6 states. [2018-08-08 09:08:30,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 09:08:30,290 INFO L93 Difference]: Finished difference Result 1158 states and 2145 transitions. [2018-08-08 09:08:30,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-08 09:08:30,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2018-08-08 09:08:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 09:08:30,316 INFO L225 Difference]: With dead ends: 1158 [2018-08-08 09:08:30,316 INFO L226 Difference]: Without dead ends: 746 [2018-08-08 09:08:30,325 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 09:08:30,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2018-08-08 09:08:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 744. [2018-08-08 09:08:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-08-08 09:08:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1075 transitions. [2018-08-08 09:08:30,442 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1075 transitions. Word has length 57 [2018-08-08 09:08:30,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 09:08:30,443 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1075 transitions. [2018-08-08 09:08:30,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-08 09:08:30,443 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1075 transitions. [2018-08-08 09:08:30,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-08-08 09:08:30,452 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 09:08:30,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:30,453 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 09:08:30,453 INFO L82 PathProgramCache]: Analyzing trace with hash -167714922, now seen corresponding path program 1 times [2018-08-08 09:08:30,454 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 09:08:30,454 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2018-08-08 09:08:30,455 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], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [582], [1374], [1378], [1382], [1388], [1392], [1394], [1579], [1580], [1581], [1583], [1584] [2018-08-08 09:08:30,468 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-08-08 09:08:30,468 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)