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/Problem14_label38_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-08 08:59:34,059 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-08 08:59:34,062 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-08 08:59:34,077 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-08 08:59:34,078 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-08 08:59:34,079 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-08 08:59:34,080 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-08 08:59:34,084 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-08 08:59:34,086 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-08 08:59:34,087 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-08 08:59:34,088 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-08 08:59:34,088 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-08 08:59:34,089 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-08 08:59:34,090 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-08 08:59:34,092 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-08 08:59:34,093 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-08 08:59:34,094 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-08 08:59:34,098 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-08 08:59:34,103 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-08 08:59:34,104 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-08 08:59:34,108 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-08 08:59:34,109 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-08 08:59:34,115 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-08 08:59:34,116 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-08 08:59:34,116 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-08 08:59:34,118 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-08 08:59:34,120 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-08 08:59:34,121 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-08 08:59:34,121 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-08 08:59:34,124 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-08 08:59:34,125 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-08 08:59:34,126 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-08 08:59:34,126 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-08 08:59:34,126 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-08 08:59:34,127 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-08 08:59:34,130 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-08 08:59:34,131 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 08:59:34,161 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-08 08:59:34,161 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-08 08:59:34,162 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-08 08:59:34,163 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-08 08:59:34,163 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-08 08:59:34,163 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-08 08:59:34,163 INFO L133 SettingsManager]: * Congruence Domain=false [2018-08-08 08:59:34,164 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-08 08:59:34,164 INFO L133 SettingsManager]: * Octagon Domain=false [2018-08-08 08:59:34,164 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-08-08 08:59:34,164 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-08 08:59:34,164 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-08 08:59:34,166 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-08 08:59:34,167 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-08 08:59:34,167 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-08 08:59:34,167 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-08 08:59:34,167 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-08 08:59:34,168 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-08 08:59:34,168 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-08 08:59:34,168 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-08 08:59:34,168 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-08 08:59:34,170 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-08 08:59:34,170 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-08 08:59:34,170 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-08 08:59:34,171 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 08:59:34,171 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-08 08:59:34,171 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-08 08:59:34,172 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-08 08:59:34,172 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-08-08 08:59:34,172 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-08 08:59:34,172 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-08 08:59:34,173 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-08 08:59:34,173 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-08 08:59:34,173 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-08 08:59:34,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-08 08:59:34,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-08 08:59:34,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-08 08:59:34,278 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-08 08:59:34,278 INFO L276 PluginConnector]: CDTParser initialized [2018-08-08 08:59:34,279 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38_true-unreach-call_false-termination.c [2018-08-08 08:59:34,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ff3611cc/1faea4ade86644f0848ef434c2b49a15/FLAG1304e0074 [2018-08-08 08:59:34,923 INFO L276 CDTParser]: Found 1 translation units. [2018-08-08 08:59:34,924 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label38_true-unreach-call_false-termination.c [2018-08-08 08:59:34,955 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ff3611cc/1faea4ade86644f0848ef434c2b49a15/FLAG1304e0074 [2018-08-08 08:59:34,972 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ff3611cc/1faea4ade86644f0848ef434c2b49a15 [2018-08-08 08:59:34,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-08 08:59:34,986 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-08 08:59:34,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-08 08:59:34,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-08 08:59:34,994 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-08 08:59:34,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 08:59:34" (1/1) ... [2018-08-08 08:59:34,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ed2379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:34, skipping insertion in model container [2018-08-08 08:59:34,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 08:59:34" (1/1) ... [2018-08-08 08:59:35,234 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-08 08:59:35,546 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 08:59:35,563 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-08 08:59:35,788 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 08:59:35,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:35 WrapperNode [2018-08-08 08:59:35,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-08 08:59:35,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-08 08:59:35,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-08 08:59:35,846 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-08 08:59:35,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:35" (1/1) ... [2018-08-08 08:59:35,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:35" (1/1) ... [2018-08-08 08:59:35,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-08 08:59:35,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-08 08:59:35,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-08 08:59:35,988 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-08 08:59:36,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:35" (1/1) ... [2018-08-08 08:59:36,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:35" (1/1) ... [2018-08-08 08:59:36,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:35" (1/1) ... [2018-08-08 08:59:36,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:35" (1/1) ... [2018-08-08 08:59:36,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:35" (1/1) ... [2018-08-08 08:59:36,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:35" (1/1) ... [2018-08-08 08:59:36,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:35" (1/1) ... [2018-08-08 08:59:36,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-08 08:59:36,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-08 08:59:36,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-08 08:59:36,287 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-08 08:59:36,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:35" (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 08:59:36,363 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-08-08 08:59:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-08-08 08:59:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-08 08:59:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-08 08:59:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-08 08:59:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-08 08:59:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-08 08:59:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-08 08:59:40,302 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-08 08:59:40,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 08:59:40 BoogieIcfgContainer [2018-08-08 08:59:40,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-08 08:59:40,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-08 08:59:40,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-08 08:59:40,308 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-08 08:59:40,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.08 08:59:34" (1/3) ... [2018-08-08 08:59:40,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d882636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 08:59:40, skipping insertion in model container [2018-08-08 08:59:40,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 08:59:35" (2/3) ... [2018-08-08 08:59:40,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d882636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 08:59:40, skipping insertion in model container [2018-08-08 08:59:40,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 08:59:40" (3/3) ... [2018-08-08 08:59:40,312 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label38_true-unreach-call_false-termination.c [2018-08-08 08:59:40,322 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-08 08:59:40,332 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-08 08:59:40,394 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-08 08:59:40,395 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-08 08:59:40,396 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-08 08:59:40,396 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-08 08:59:40,396 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-08 08:59:40,396 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-08 08:59:40,396 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-08 08:59:40,396 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-08 08:59:40,397 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-08 08:59:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-08-08 08:59:40,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-08-08 08:59:40,437 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 08:59:40,438 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 08:59:40,439 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 08:59:40,445 INFO L82 PathProgramCache]: Analyzing trace with hash 2125172087, now seen corresponding path program 1 times [2018-08-08 08:59:40,448 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 08:59:40,449 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 58 with the following transitions: [2018-08-08 08:59:40,451 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [355], [357], [947], [948], [952], [956], [962], [966], [973], [974], [975], [977] [2018-08-08 08:59:40,491 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-08-08 08:59:40,492 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 08:59:43,928 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 08:59:43,930 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 08:59:43,955 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 08:59:45,204 INFO L232 lantSequenceWeakener]: Weakened 54 states. On average, predicates are now at 80.27% of their original sizes. [2018-08-08 08:59:45,205 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 08:59:45,347 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 08:59:45,349 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 08:59:45,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-08 08:59:45,349 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 08:59:45,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-08 08:59:45,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-08 08:59:45,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 08:59:45,364 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-08-08 08:59:47,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 08:59:47,984 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-08-08 08:59:47,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-08 08:59:47,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2018-08-08 08:59:47,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 08:59:48,008 INFO L225 Difference]: With dead ends: 693 [2018-08-08 08:59:48,008 INFO L226 Difference]: Without dead ends: 436 [2018-08-08 08:59:48,016 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 56 GetRequests, 52 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 08:59:48,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-08-08 08:59:48,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-08-08 08:59:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-08-08 08:59:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-08-08 08:59:48,105 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 57 [2018-08-08 08:59:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 08:59:48,106 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-08-08 08:59:48,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-08 08:59:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-08-08 08:59:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-08-08 08:59:48,113 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 08:59:48,113 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] [2018-08-08 08:59:48,114 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 08:59:48,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1430358901, now seen corresponding path program 1 times [2018-08-08 08:59:48,114 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 08:59:48,115 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 143 with the following transitions: [2018-08-08 08:59:48,115 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [355], [357], [360], [368], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [552], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-08-08 08:59:48,120 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-08-08 08:59:48,120 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)