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_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label15_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 22:33:37,010 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 22:33:37,014 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 22:33:37,027 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 22:33:37,027 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 22:33:37,028 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 22:33:37,030 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 22:33:37,032 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 22:33:37,033 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 22:33:37,034 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 22:33:37,035 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 22:33:37,036 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 22:33:37,036 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 22:33:37,038 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 22:33:37,039 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 22:33:37,039 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 22:33:37,040 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 22:33:37,042 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 22:33:37,044 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 22:33:37,046 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 22:33:37,047 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 22:33:37,048 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 22:33:37,051 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 22:33:37,051 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 22:33:37,051 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 22:33:37,052 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 22:33:37,053 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 22:33:37,054 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 22:33:37,055 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 22:33:37,056 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 22:33:37,056 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 22:33:37,057 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 22:33:37,057 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 22:33:37,057 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 22:33:37,058 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 22:33:37,059 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 22:33:37,059 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-11 22:33:37,086 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 22:33:37,088 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 22:33:37,089 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 22:33:37,089 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 22:33:37,089 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 22:33:37,089 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 22:33:37,092 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 22:33:37,092 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 22:33:37,092 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 22:33:37,092 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 22:33:37,093 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 22:33:37,093 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 22:33:37,094 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 22:33:37,094 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 22:33:37,095 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 22:33:37,095 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 22:33:37,095 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 22:33:37,095 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 22:33:37,095 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 22:33:37,096 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 22:33:37,096 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 22:33:37,096 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 22:33:37,096 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 22:33:37,098 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 22:33:37,098 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 22:33:37,098 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 22:33:37,099 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 22:33:37,099 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 22:33:37,099 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 22:33:37,099 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 22:33:37,099 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 22:33:37,100 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 22:33:37,100 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 22:33:37,100 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 22:33:37,173 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 22:33:37,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 22:33:37,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 22:33:37,197 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 22:33:37,198 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 22:33:37,199 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label15_true-unreach-call_false-termination.c [2018-09-11 22:33:37,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da10b1884/850396bc47ef4faca41dbbb319be8a43/FLAG6c51e25eb [2018-09-11 22:33:37,853 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 22:33:37,854 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label15_true-unreach-call_false-termination.c [2018-09-11 22:33:37,871 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da10b1884/850396bc47ef4faca41dbbb319be8a43/FLAG6c51e25eb [2018-09-11 22:33:37,888 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da10b1884/850396bc47ef4faca41dbbb319be8a43 [2018-09-11 22:33:37,900 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 22:33:37,903 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 22:33:37,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 22:33:37,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 22:33:37,912 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 22:33:37,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 10:33:37" (1/1) ... [2018-09-11 22:33:37,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17fa8ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:37, skipping insertion in model container [2018-09-11 22:33:37,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 10:33:37" (1/1) ... [2018-09-11 22:33:38,135 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 22:33:38,472 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 22:33:38,494 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 22:33:38,643 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 22:33:38,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:38 WrapperNode [2018-09-11 22:33:38,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 22:33:38,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 22:33:38,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 22:33:38,713 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 22:33:38,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:38" (1/1) ... [2018-09-11 22:33:38,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:38" (1/1) ... [2018-09-11 22:33:38,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 22:33:38,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 22:33:38,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 22:33:38,836 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 22:33:38,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:38" (1/1) ... [2018-09-11 22:33:38,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:38" (1/1) ... [2018-09-11 22:33:38,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:38" (1/1) ... [2018-09-11 22:33:38,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:38" (1/1) ... [2018-09-11 22:33:39,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:38" (1/1) ... [2018-09-11 22:33:39,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:38" (1/1) ... [2018-09-11 22:33:39,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:38" (1/1) ... [2018-09-11 22:33:39,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 22:33:39,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 22:33:39,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 22:33:39,116 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 22:33:39,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:38" (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 [2018-09-11 22:33:39,188 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 [2018-09-11 22:33:39,189 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 [2018-09-11 22:33:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 22:33:39,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 22:33:39,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 22:33:39,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 22:33:39,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 22:33:39,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 22:33:43,028 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 22:33:43,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 10:33:43 BoogieIcfgContainer [2018-09-11 22:33:43,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 22:33:43,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 22:33:43,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 22:33:43,037 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 22:33:43,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 10:33:37" (1/3) ... [2018-09-11 22:33:43,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6cdff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 10:33:43, skipping insertion in model container [2018-09-11 22:33:43,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:33:38" (2/3) ... [2018-09-11 22:33:43,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6cdff9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 10:33:43, skipping insertion in model container [2018-09-11 22:33:43,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 10:33:43" (3/3) ... [2018-09-11 22:33:43,041 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label15_true-unreach-call_false-termination.c [2018-09-11 22:33:43,053 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 22:33:43,064 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 22:33:43,133 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 22:33:43,134 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 22:33:43,134 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 22:33:43,135 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 22:33:43,135 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 22:33:43,135 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 22:33:43,135 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 22:33:43,135 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 22:33:43,136 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 22:33:43,176 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-11 22:33:43,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-11 22:33:43,190 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:33:43,192 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, 1, 1, 1, 1] [2018-09-11 22:33:43,193 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]=== [2018-09-11 22:33:43,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1960432748, now seen corresponding path program 1 times [2018-09-11 22:33:43,202 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:33:43,203 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 73 with the following transitions: [2018-09-11 22:33:43,206 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], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [475], [477], [947], [948], [952], [956], [962], [966], [973], [974], [975], [977] [2018-09-11 22:33:43,273 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:33:43,274 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:33:45,614 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:33:45,617 INFO L272 AbstractInterpreter]: Visited 71 different actions 71 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-11 22:33:45,641 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:33:47,082 INFO L232 lantSequenceWeakener]: Weakened 70 states. On average, predicates are now at 80.88% of their original sizes. [2018-09-11 22:33:47,083 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:33:47,385 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:33:47,387 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:33:47,387 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 22:33:47,388 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:33:47,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 22:33:47,401 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 22:33:47,402 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 22:33:47,405 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-09-11 22:33:52,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:33:52,680 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-09-11 22:33:52,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 22:33:52,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2018-09-11 22:33:52,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:33:52,701 INFO L225 Difference]: With dead ends: 693 [2018-09-11 22:33:52,702 INFO L226 Difference]: Without dead ends: 436 [2018-09-11 22:33:52,709 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 22:33:52,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-09-11 22:33:52,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-09-11 22:33:52,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-11 22:33:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-09-11 22:33:52,805 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 72 [2018-09-11 22:33:52,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:33:52,806 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-09-11 22:33:52,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 22:33:52,807 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-09-11 22:33:52,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-09-11 22:33:52,821 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:33:52,821 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, 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] [2018-09-11 22:33:52,822 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]=== [2018-09-11 22:33:52,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1431170279, now seen corresponding path program 1 times [2018-09-11 22:33:52,822 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:33:52,823 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 158 with the following transitions: [2018-09-11 22:33:52,823 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], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [475], [477], [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] [2018-09-11 22:33:52,840 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:33:52,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:34:02,115 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:34:02,115 INFO L272 AbstractInterpreter]: Visited 92 different actions 177 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-11 22:34:02,132 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:34:04,887 INFO L232 lantSequenceWeakener]: Weakened 155 states. On average, predicates are now at 78.96% of their original sizes. [2018-09-11 22:34:04,887 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:34:09,699 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:34:09,700 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:34:09,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-11 22:34:09,700 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:34:09,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-11 22:34:09,702 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-11 22:34:09,703 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-09-11 22:34:09,703 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 16 states. [2018-09-11 22:34:34,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:34:34,618 INFO L93 Difference]: Finished difference Result 1421 states and 2494 transitions. [2018-09-11 22:34:34,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-11 22:34:34,618 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2018-09-11 22:34:34,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:34:34,631 INFO L225 Difference]: With dead ends: 1421 [2018-09-11 22:34:34,631 INFO L226 Difference]: Without dead ends: 1176 [2018-09-11 22:34:34,636 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 175 GetRequests, 102 SyntacticMatches, 40 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=248, Invalid=942, Unknown=0, NotChecked=0, Total=1190 [2018-09-11 22:34:34,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2018-09-11 22:34:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1173. [2018-09-11 22:34:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2018-09-11 22:34:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1406 transitions. [2018-09-11 22:34:34,707 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1406 transitions. Word has length 157 [2018-09-11 22:34:34,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:34:34,709 INFO L480 AbstractCegarLoop]: Abstraction has 1173 states and 1406 transitions. [2018-09-11 22:34:34,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-11 22:34:34,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1406 transitions. [2018-09-11 22:34:34,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-11 22:34:34,715 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:34:34,716 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 22:34:34,716 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:34:34,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1518557381, now seen corresponding path program 1 times [2018-09-11 22:34:34,717 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:34:34,717 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 184 with the following transitions: [2018-09-11 22:34:34,717 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], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [475], [477], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-11 22:34:34,723 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:34:34,723 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:34:45,108 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:34:45,108 INFO L272 AbstractInterpreter]: Visited 118 different actions 230 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-09-11 22:34:45,118 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:34:47,238 INFO L232 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 78.72% of their original sizes. [2018-09-11 22:34:47,239 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:34:47,777 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:34:47,777 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:34:47,778 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-11 22:34:47,778 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:34:47,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-11 22:34:47,779 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-11 22:34:47,779 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-09-11 22:34:47,779 INFO L87 Difference]: Start difference. First operand 1173 states and 1406 transitions. Second operand 12 states. [2018-09-11 22:34:58,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:34:58,777 INFO L93 Difference]: Finished difference Result 1606 states and 2190 transitions. [2018-09-11 22:34:58,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-11 22:34:58,786 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 183 [2018-09-11 22:34:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:34:58,797 INFO L225 Difference]: With dead ends: 1606 [2018-09-11 22:34:58,797 INFO L226 Difference]: Without dead ends: 1361 [2018-09-11 22:34:58,799 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 191 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2018-09-11 22:34:58,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2018-09-11 22:34:58,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1358. [2018-09-11 22:34:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1358 states. [2018-09-11 22:34:58,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1604 transitions. [2018-09-11 22:34:58,867 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1604 transitions. Word has length 183 [2018-09-11 22:34:58,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:34:58,868 INFO L480 AbstractCegarLoop]: Abstraction has 1358 states and 1604 transitions. [2018-09-11 22:34:58,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-11 22:34:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1604 transitions. [2018-09-11 22:34:58,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-09-11 22:34:58,877 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:34:58,877 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 22:34:58,878 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:34:58,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1242015352, now seen corresponding path program 1 times [2018-09-11 22:34:58,878 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:34:58,879 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-09-11 22:34:58,879 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], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [475], [477], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [552], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-11 22:34:58,887 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:34:58,888 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:35:24,338 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:35:24,338 INFO L272 AbstractInterpreter]: Visited 119 different actions 467 times. Merged at 7 different actions 24 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-11 22:35:24,341 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:35:27,345 INFO L232 lantSequenceWeakener]: Weakened 266 states. On average, predicates are now at 78.31% of their original sizes. [2018-09-11 22:35:27,346 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:35:33,956 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:35:33,957 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:35:33,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2018-09-11 22:35:33,958 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:35:33,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-11 22:35:33,959 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-11 22:35:33,959 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-09-11 22:35:33,959 INFO L87 Difference]: Start difference. First operand 1358 states and 1604 transitions. Second operand 18 states. [2018-09-11 22:35:57,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:35:57,641 INFO L93 Difference]: Finished difference Result 3312 states and 4613 transitions. [2018-09-11 22:35:57,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-11 22:35:57,642 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 268 [2018-09-11 22:35:57,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:35:57,655 INFO L225 Difference]: With dead ends: 3312 [2018-09-11 22:35:57,655 INFO L226 Difference]: Without dead ends: 2328 [2018-09-11 22:35:57,661 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 291 GetRequests, 182 SyntacticMatches, 69 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=374, Invalid=1348, Unknown=0, NotChecked=0, Total=1722 [2018-09-11 22:35:57,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2018-09-11 22:35:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 2132. [2018-09-11 22:35:57,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2018-09-11 22:35:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2472 transitions. [2018-09-11 22:35:57,746 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2472 transitions. Word has length 268 [2018-09-11 22:35:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:35:57,747 INFO L480 AbstractCegarLoop]: Abstraction has 2132 states and 2472 transitions. [2018-09-11 22:35:57,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-11 22:35:57,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2472 transitions. [2018-09-11 22:35:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-09-11 22:35:57,754 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:35:57,755 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 22:35:57,755 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 22:35:57,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1384150375, now seen corresponding path program 1 times [2018-09-11 22:35:57,756 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:35:57,756 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 294 with the following transitions: [2018-09-11 22:35:57,756 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], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [463], [471], [475], [477], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [652], [653], [656], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-11 22:35:57,762 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:35:57,763 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown