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_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label33_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 11:59:01,133 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 11:59:01,135 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 11:59:01,149 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 11:59:01,150 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 11:59:01,152 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 11:59:01,154 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 11:59:01,156 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 11:59:01,157 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 11:59:01,158 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 11:59:01,159 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 11:59:01,160 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 11:59:01,161 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 11:59:01,162 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 11:59:01,163 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 11:59:01,163 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 11:59:01,164 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 11:59:01,166 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 11:59:01,168 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 11:59:01,170 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 11:59:01,171 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 11:59:01,173 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 11:59:01,175 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 11:59:01,175 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 11:59:01,176 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 11:59:01,177 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 11:59:01,178 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 11:59:01,179 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 11:59:01,179 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 11:59:01,181 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 11:59:01,181 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 11:59:01,182 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 11:59:01,182 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 11:59:01,182 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 11:59:01,184 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 11:59:01,184 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 11:59:01,185 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-09-11 11:59:01,208 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 11:59:01,209 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 11:59:01,210 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 11:59:01,210 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 11:59:01,210 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 11:59:01,210 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 11:59:01,211 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 11:59:01,211 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-11 11:59:01,211 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 11:59:01,211 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 11:59:01,211 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 11:59:01,212 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 11:59:01,212 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 11:59:01,213 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 11:59:01,213 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 11:59:01,213 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 11:59:01,213 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 11:59:01,214 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 11:59:01,214 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 11:59:01,215 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 11:59:01,215 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 11:59:01,215 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 11:59:01,215 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 11:59:01,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 11:59:01,216 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 11:59:01,216 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 11:59:01,216 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 11:59:01,216 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 11:59:01,216 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 11:59:01,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 11:59:01,217 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 11:59:01,217 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 11:59:01,218 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 11:59:01,277 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 11:59:01,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 11:59:01,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 11:59:01,301 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 11:59:01,301 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 11:59:01,302 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label33_true-unreach-call_false-termination.c [2018-09-11 11:59:01,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b957e9c1/c7408f17e57a407ba623d68c4fe325b3/FLAG995201dcb [2018-09-11 11:59:01,989 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 11:59:01,990 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label33_true-unreach-call_false-termination.c [2018-09-11 11:59:02,016 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b957e9c1/c7408f17e57a407ba623d68c4fe325b3/FLAG995201dcb [2018-09-11 11:59:02,044 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b957e9c1/c7408f17e57a407ba623d68c4fe325b3 [2018-09-11 11:59:02,061 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 11:59:02,065 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 11:59:02,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 11:59:02,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 11:59:02,078 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 11:59:02,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:59:02" (1/1) ... [2018-09-11 11:59:02,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aecc83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02, skipping insertion in model container [2018-09-11 11:59:02,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:59:02" (1/1) ... [2018-09-11 11:59:02,313 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 11:59:02,713 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:59:02,736 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 11:59:02,873 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:59:02,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02 WrapperNode [2018-09-11 11:59:02,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 11:59:02,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 11:59:02,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 11:59:02,930 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 11:59:02,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02" (1/1) ... [2018-09-11 11:59:02,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02" (1/1) ... [2018-09-11 11:59:03,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 11:59:03,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 11:59:03,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 11:59:03,076 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 11:59:03,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02" (1/1) ... [2018-09-11 11:59:03,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02" (1/1) ... [2018-09-11 11:59:03,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02" (1/1) ... [2018-09-11 11:59:03,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02" (1/1) ... [2018-09-11 11:59:03,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02" (1/1) ... [2018-09-11 11:59:03,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02" (1/1) ... [2018-09-11 11:59:03,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02" (1/1) ... [2018-09-11 11:59:03,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 11:59:03,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 11:59:03,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 11:59:03,349 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 11:59:03,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02" (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 11:59:03,440 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 11:59:03,440 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 11:59:03,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 11:59:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 11:59:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 11:59:03,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 11:59:03,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 11:59:03,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 11:59:07,381 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 11:59:07,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:59:07 BoogieIcfgContainer [2018-09-11 11:59:07,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 11:59:07,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 11:59:07,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 11:59:07,386 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 11:59:07,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:59:02" (1/3) ... [2018-09-11 11:59:07,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4d83e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:59:07, skipping insertion in model container [2018-09-11 11:59:07,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:02" (2/3) ... [2018-09-11 11:59:07,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4d83e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:59:07, skipping insertion in model container [2018-09-11 11:59:07,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:59:07" (3/3) ... [2018-09-11 11:59:07,391 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label33_true-unreach-call_false-termination.c [2018-09-11 11:59:07,400 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 11:59:07,409 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 11:59:07,466 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 11:59:07,467 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 11:59:07,467 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 11:59:07,467 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 11:59:07,467 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 11:59:07,468 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 11:59:07,469 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 11:59:07,469 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 11:59:07,469 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 11:59:07,497 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-11 11:59:07,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-09-11 11:59:07,508 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:59:07,509 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] [2018-09-11 11:59:07,510 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 11:59:07,516 INFO L82 PathProgramCache]: Analyzing trace with hash -576164841, now seen corresponding path program 1 times [2018-09-11 11:59:07,518 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:59:07,519 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 66 with the following transitions: [2018-09-11 11:59:07,522 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], [419], [421], [947], [948], [952], [956], [962], [966], [973], [974], [975], [977] [2018-09-11 11:59:07,592 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:59:07,593 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:59:09,150 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:59:09,152 INFO L272 AbstractInterpreter]: Visited 64 different actions 64 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-11 11:59:09,166 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:59:10,085 INFO L232 lantSequenceWeakener]: Weakened 63 states. On average, predicates are now at 80.78% of their original sizes. [2018-09-11 11:59:10,085 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:59:10,385 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:59:10,387 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:59:10,387 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 11:59:10,387 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:59:10,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 11:59:10,401 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 11:59:10,402 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 11:59:10,404 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-09-11 11:59:15,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:59:15,752 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-09-11 11:59:15,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 11:59:15,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2018-09-11 11:59:15,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:59:15,777 INFO L225 Difference]: With dead ends: 693 [2018-09-11 11:59:15,778 INFO L226 Difference]: Without dead ends: 436 [2018-09-11 11:59:15,786 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 64 GetRequests, 60 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 11:59:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-09-11 11:59:15,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-09-11 11:59:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-11 11:59:15,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-09-11 11:59:15,881 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 65 [2018-09-11 11:59:15,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:59:15,882 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-09-11 11:59:15,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 11:59:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-09-11 11:59:15,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-11 11:59:15,895 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:59:15,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:15,896 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 11:59:15,896 INFO L82 PathProgramCache]: Analyzing trace with hash 115761067, now seen corresponding path program 1 times [2018-09-11 11:59:15,896 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:59:15,897 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 151 with the following transitions: [2018-09-11 11:59:15,898 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], [419], [421], [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] [2018-09-11 11:59:15,904 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:59:15,904 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:59:23,055 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:59:23,056 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 11:59:23,064 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:59:26,266 INFO L232 lantSequenceWeakener]: Weakened 148 states. On average, predicates are now at 78.85% of their original sizes. [2018-09-11 11:59:26,266 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:59:28,335 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:59:28,336 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:59:28,336 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 11:59:28,336 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:59:28,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 11:59:28,339 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 11:59:28,340 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-11 11:59:28,340 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 11 states. [2018-09-11 11:59:40,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:59:40,557 INFO L93 Difference]: Finished difference Result 1051 states and 1763 transitions. [2018-09-11 11:59:40,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-11 11:59:40,558 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 150 [2018-09-11 11:59:40,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:59:40,567 INFO L225 Difference]: With dead ends: 1051 [2018-09-11 11:59:40,567 INFO L226 Difference]: Without dead ends: 806 [2018-09-11 11:59:40,571 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 156 GetRequests, 87 SyntacticMatches, 53 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-11 11:59:40,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-09-11 11:59:40,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 803. [2018-09-11 11:59:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2018-09-11 11:59:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1002 transitions. [2018-09-11 11:59:40,636 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1002 transitions. Word has length 150 [2018-09-11 11:59:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:59:40,637 INFO L480 AbstractCegarLoop]: Abstraction has 803 states and 1002 transitions. [2018-09-11 11:59:40,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 11:59:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1002 transitions. [2018-09-11 11:59:40,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-11 11:59:40,643 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:59:40,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:40,644 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 11:59:40,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1906627521, now seen corresponding path program 1 times [2018-09-11 11:59:40,645 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:59:40,645 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-09-11 11:59:40,646 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], [419], [421], [424], [432], [440], [448], [456], [464], [472], [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 11:59:40,652 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:59:40,652 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:59:53,973 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:59:53,974 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 11:59:53,981 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:59:58,329 INFO L232 lantSequenceWeakener]: Weakened 174 states. On average, predicates are now at 78.61% of their original sizes. [2018-09-11 11:59:58,329 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 12:00:00,000 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 12:00:00,001 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 12:00:00,001 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 12:00:00,001 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 12:00:00,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 12:00:00,002 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 12:00:00,002 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-11 12:00:00,003 INFO L87 Difference]: Start difference. First operand 803 states and 1002 transitions. Second operand 11 states. [2018-09-11 12:00:08,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 12:00:08,325 INFO L93 Difference]: Finished difference Result 1236 states and 1786 transitions. [2018-09-11 12:00:08,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-11 12:00:08,328 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 176 [2018-09-11 12:00:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 12:00:08,334 INFO L225 Difference]: With dead ends: 1236 [2018-09-11 12:00:08,334 INFO L226 Difference]: Without dead ends: 991 [2018-09-11 12:00:08,336 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 183 GetRequests, 113 SyntacticMatches, 53 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-09-11 12:00:08,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2018-09-11 12:00:08,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 988. [2018-09-11 12:00:08,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2018-09-11 12:00:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1200 transitions. [2018-09-11 12:00:08,375 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1200 transitions. Word has length 176 [2018-09-11 12:00:08,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 12:00:08,376 INFO L480 AbstractCegarLoop]: Abstraction has 988 states and 1200 transitions. [2018-09-11 12:00:08,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 12:00:08,376 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1200 transitions. [2018-09-11 12:00:08,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-09-11 12:00:08,381 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 12:00:08,382 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, 2, 2, 2, 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] [2018-09-11 12:00:08,382 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 12:00:08,383 INFO L82 PathProgramCache]: Analyzing trace with hash -364573141, now seen corresponding path program 1 times [2018-09-11 12:00:08,383 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 12:00:08,383 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-09-11 12:00:08,383 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], [419], [421], [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], [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 12:00:08,388 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 12:00:08,388 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 12:00:18,503 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 12:00:18,504 INFO L272 AbstractInterpreter]: Visited 119 different actions 352 times. Merged at 7 different actions 17 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-11 12:00:18,513 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 12:00:20,228 INFO L232 lantSequenceWeakener]: Weakened 259 states. On average, predicates are now at 78.2% of their original sizes. [2018-09-11 12:00:20,228 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 12:00:21,058 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 12:00:21,059 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 12:00:21,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-11 12:00:21,059 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 12:00:21,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-11 12:00:21,060 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-11 12:00:21,061 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-09-11 12:00:21,061 INFO L87 Difference]: Start difference. First operand 988 states and 1200 transitions. Second operand 16 states. [2018-09-11 12:00:39,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 12:00:39,345 INFO L93 Difference]: Finished difference Result 2043 states and 3188 transitions. [2018-09-11 12:00:39,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-11 12:00:39,347 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 261 [2018-09-11 12:00:39,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 12:00:39,358 INFO L225 Difference]: With dead ends: 2043 [2018-09-11 12:00:39,358 INFO L226 Difference]: Without dead ends: 1798 [2018-09-11 12:00:39,361 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 279 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2018-09-11 12:00:39,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2018-09-11 12:00:39,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1605. [2018-09-11 12:00:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2018-09-11 12:00:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1893 transitions. [2018-09-11 12:00:39,418 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1893 transitions. Word has length 261 [2018-09-11 12:00:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 12:00:39,419 INFO L480 AbstractCegarLoop]: Abstraction has 1605 states and 1893 transitions. [2018-09-11 12:00:39,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-11 12:00:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1893 transitions. [2018-09-11 12:00:39,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-11 12:00:39,425 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 12:00:39,425 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:00:39,426 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 12:00:39,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1713554602, now seen corresponding path program 1 times [2018-09-11 12:00:39,426 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 12:00:39,427 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 287 with the following transitions: [2018-09-11 12:00:39,427 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], [419], [421], [424], [432], [440], [448], [456], [464], [472], [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 12:00:39,435 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 12:00:39,435 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown