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_label36_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 11:59:07,482 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 11:59:07,484 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 11:59:07,499 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 11:59:07,500 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 11:59:07,501 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 11:59:07,502 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 11:59:07,504 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 11:59:07,505 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 11:59:07,506 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 11:59:07,507 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 11:59:07,507 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 11:59:07,508 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 11:59:07,509 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 11:59:07,512 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 11:59:07,513 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 11:59:07,514 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 11:59:07,516 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 11:59:07,518 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 11:59:07,519 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 11:59:07,520 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 11:59:07,522 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 11:59:07,524 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 11:59:07,524 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 11:59:07,524 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 11:59:07,525 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 11:59:07,526 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 11:59:07,527 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 11:59:07,528 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 11:59:07,529 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 11:59:07,529 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 11:59:07,530 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 11:59:07,530 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 11:59:07,531 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 11:59:07,532 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 11:59:07,532 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 11:59:07,533 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 11:59:07,549 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 11:59:07,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 11:59:07,550 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 11:59:07,550 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 11:59:07,550 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 11:59:07,550 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 11:59:07,551 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 11:59:07,551 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-11 11:59:07,551 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 11:59:07,551 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 11:59:07,551 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 11:59:07,552 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 11:59:07,552 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 11:59:07,552 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 11:59:07,553 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 11:59:07,553 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 11:59:07,553 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 11:59:07,553 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 11:59:07,553 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 11:59:07,554 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 11:59:07,554 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 11:59:07,554 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 11:59:07,554 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 11:59:07,554 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 11:59:07,555 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 11:59:07,555 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 11:59:07,555 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 11:59:07,555 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 11:59:07,555 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 11:59:07,555 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 11:59:07,556 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 11:59:07,556 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 11:59:07,556 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 11:59:07,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 11:59:07,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 11:59:07,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 11:59:07,656 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 11:59:07,656 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 11:59:07,657 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36_true-unreach-call_false-termination.c [2018-09-11 11:59:08,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7867d0b1b/b9269a61ba5f457d974e1dc4f431f796/FLAG91f794274 [2018-09-11 11:59:08,353 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 11:59:08,354 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label36_true-unreach-call_false-termination.c [2018-09-11 11:59:08,378 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7867d0b1b/b9269a61ba5f457d974e1dc4f431f796/FLAG91f794274 [2018-09-11 11:59:08,400 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7867d0b1b/b9269a61ba5f457d974e1dc4f431f796 [2018-09-11 11:59:08,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 11:59:08,417 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 11:59:08,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 11:59:08,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 11:59:08,429 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 11:59:08,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:59:08" (1/1) ... [2018-09-11 11:59:08,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6efa186f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:08, skipping insertion in model container [2018-09-11 11:59:08,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:59:08" (1/1) ... [2018-09-11 11:59:08,643 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 11:59:08,941 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:59:08,959 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 11:59:09,165 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:59:09,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:09 WrapperNode [2018-09-11 11:59:09,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 11:59:09,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 11:59:09,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 11:59:09,226 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 11:59:09,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:09" (1/1) ... [2018-09-11 11:59:09,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:09" (1/1) ... [2018-09-11 11:59:09,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 11:59:09,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 11:59:09,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 11:59:09,368 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 11:59:09,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:09" (1/1) ... [2018-09-11 11:59:09,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:09" (1/1) ... [2018-09-11 11:59:09,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:09" (1/1) ... [2018-09-11 11:59:09,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:09" (1/1) ... [2018-09-11 11:59:09,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:09" (1/1) ... [2018-09-11 11:59:09,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:09" (1/1) ... [2018-09-11 11:59:09,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:09" (1/1) ... [2018-09-11 11:59:09,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 11:59:09,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 11:59:09,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 11:59:09,659 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 11:59:09,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:09" (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 11:59:09,739 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 11:59:09,740 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 11:59:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 11:59:09,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 11:59:09,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 11:59:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 11:59:09,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 11:59:09,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 11:59:13,986 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 11:59:13,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:59:13 BoogieIcfgContainer [2018-09-11 11:59:13,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 11:59:13,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 11:59:13,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 11:59:13,992 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 11:59:13,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:59:08" (1/3) ... [2018-09-11 11:59:13,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4c44a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:59:13, skipping insertion in model container [2018-09-11 11:59:13,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:59:09" (2/3) ... [2018-09-11 11:59:13,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4c44a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:59:13, skipping insertion in model container [2018-09-11 11:59:13,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:59:13" (3/3) ... [2018-09-11 11:59:13,996 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label36_true-unreach-call_false-termination.c [2018-09-11 11:59:14,006 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 11:59:14,017 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 11:59:14,067 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 11:59:14,068 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 11:59:14,069 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 11:59:14,069 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 11:59:14,069 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 11:59:14,069 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 11:59:14,070 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 11:59:14,070 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 11:59:14,070 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 11:59:14,099 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-11 11:59:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-11 11:59:14,109 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:59:14,110 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] [2018-09-11 11:59:14,111 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 11:59:14,117 INFO L82 PathProgramCache]: Analyzing trace with hash 113942991, now seen corresponding path program 1 times [2018-09-11 11:59:14,119 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:59:14,120 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 56 with the following transitions: [2018-09-11 11:59:14,123 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], [339], [341], [947], [948], [952], [956], [962], [966], [973], [974], [975], [977] [2018-09-11 11:59:14,185 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:59:14,186 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:59:15,979 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:59:15,981 INFO L272 AbstractInterpreter]: Visited 54 different actions 54 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-11 11:59:16,011 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:59:16,912 INFO L232 lantSequenceWeakener]: Weakened 53 states. On average, predicates are now at 80.58% of their original sizes. [2018-09-11 11:59:16,912 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:59:17,248 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:59:17,250 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:59:17,251 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 11:59:17,251 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:59:17,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 11:59:17,266 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 11:59:17,267 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 11:59:17,269 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-09-11 11:59:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:59:21,659 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-09-11 11:59:21,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 11:59:21,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2018-09-11 11:59:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:59:21,682 INFO L225 Difference]: With dead ends: 693 [2018-09-11 11:59:21,682 INFO L226 Difference]: Without dead ends: 436 [2018-09-11 11:59:21,689 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 54 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 11:59:21,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-09-11 11:59:21,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-09-11 11:59:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-11 11:59:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-09-11 11:59:21,783 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 55 [2018-09-11 11:59:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:59:21,784 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-09-11 11:59:21,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 11:59:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-09-11 11:59:21,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-11 11:59:21,795 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:59:21,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:21,796 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 11:59:21,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1023635005, now seen corresponding path program 1 times [2018-09-11 11:59:21,796 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:59:21,797 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-09-11 11:59:21,800 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], [339], [341], [344], [352], [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] [2018-09-11 11:59:21,815 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:59:21,816 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:59:28,568 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:59:28,569 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 11:59:28,578 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:59:31,497 INFO L232 lantSequenceWeakener]: Weakened 138 states. On average, predicates are now at 78.64% of their original sizes. [2018-09-11 11:59:31,497 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:59:33,436 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:59:33,436 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:59:33,437 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 11:59:33,437 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:59:33,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 11:59:33,439 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 11:59:33,439 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-11 11:59:33,440 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 11 states. [2018-09-11 11:59:43,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:59:43,987 INFO L93 Difference]: Finished difference Result 1051 states and 1763 transitions. [2018-09-11 11:59:43,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-11 11:59:43,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 140 [2018-09-11 11:59:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:59:43,997 INFO L225 Difference]: With dead ends: 1051 [2018-09-11 11:59:43,997 INFO L226 Difference]: Without dead ends: 806 [2018-09-11 11:59:44,000 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 146 GetRequests, 87 SyntacticMatches, 43 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-11 11:59:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-09-11 11:59:44,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 803. [2018-09-11 11:59:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2018-09-11 11:59:44,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1002 transitions. [2018-09-11 11:59:44,059 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1002 transitions. Word has length 140 [2018-09-11 11:59:44,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:59:44,060 INFO L480 AbstractCegarLoop]: Abstraction has 803 states and 1002 transitions. [2018-09-11 11:59:44,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 11:59:44,060 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1002 transitions. [2018-09-11 11:59:44,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-11 11:59:44,066 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:59:44,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:44,067 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 11:59:44,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1301491881, now seen corresponding path program 1 times [2018-09-11 11:59:44,067 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:59:44,067 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 167 with the following transitions: [2018-09-11 11:59:44,068 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], [339], [341], [344], [352], [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], [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 11:59:44,080 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:59:44,080 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:59:56,150 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:59:56,150 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 11:59:56,174 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:59:59,784 INFO L232 lantSequenceWeakener]: Weakened 164 states. On average, predicates are now at 78.42% of their original sizes. [2018-09-11 11:59:59,784 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 12:00:01,187 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 12:00:01,187 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 12:00:01,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 12:00:01,188 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 12:00:01,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 12:00:01,189 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 12:00:01,189 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-11 12:00:01,189 INFO L87 Difference]: Start difference. First operand 803 states and 1002 transitions. Second operand 11 states. [2018-09-11 12:00:09,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 12:00:09,363 INFO L93 Difference]: Finished difference Result 1236 states and 1786 transitions. [2018-09-11 12:00:09,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-11 12:00:09,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 166 [2018-09-11 12:00:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 12:00:09,372 INFO L225 Difference]: With dead ends: 1236 [2018-09-11 12:00:09,372 INFO L226 Difference]: Without dead ends: 991 [2018-09-11 12:00:09,374 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 173 GetRequests, 113 SyntacticMatches, 43 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-09-11 12:00:09,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2018-09-11 12:00:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 988. [2018-09-11 12:00:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2018-09-11 12:00:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1200 transitions. [2018-09-11 12:00:09,415 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1200 transitions. Word has length 166 [2018-09-11 12:00:09,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 12:00:09,416 INFO L480 AbstractCegarLoop]: Abstraction has 988 states and 1200 transitions. [2018-09-11 12:00:09,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 12:00:09,416 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1200 transitions. [2018-09-11 12:00:09,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-09-11 12:00:09,424 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 12:00:09,424 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:00:09,424 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 12:00:09,425 INFO L82 PathProgramCache]: Analyzing trace with hash 952821987, now seen corresponding path program 1 times [2018-09-11 12:00:09,425 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 12:00:09,425 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-09-11 12:00:09,426 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], [339], [341], [344], [352], [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], [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 12:00:09,431 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 12:00:09,431 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 12:00:18,915 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 12:00:18,916 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 12:00:18,922 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 12:00:20,619 INFO L232 lantSequenceWeakener]: Weakened 249 states. On average, predicates are now at 78.05% of their original sizes. [2018-09-11 12:00:20,620 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 12:00:21,302 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 12:00:21,303 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 12:00:21,303 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-11 12:00:21,303 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 12:00:21,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-11 12:00:21,304 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-11 12:00:21,305 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-09-11 12:00:21,305 INFO L87 Difference]: Start difference. First operand 988 states and 1200 transitions. Second operand 15 states. [2018-09-11 12:00:36,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 12:00:36,137 INFO L93 Difference]: Finished difference Result 1967 states and 3058 transitions. [2018-09-11 12:00:36,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-11 12:00:36,138 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 251 [2018-09-11 12:00:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 12:00:36,151 INFO L225 Difference]: With dead ends: 1967 [2018-09-11 12:00:36,151 INFO L226 Difference]: Without dead ends: 1722 [2018-09-11 12:00:36,154 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 266 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2018-09-11 12:00:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2018-09-11 12:00:36,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1422. [2018-09-11 12:00:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1422 states. [2018-09-11 12:00:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 1686 transitions. [2018-09-11 12:00:36,209 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 1686 transitions. Word has length 251 [2018-09-11 12:00:36,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 12:00:36,210 INFO L480 AbstractCegarLoop]: Abstraction has 1422 states and 1686 transitions. [2018-09-11 12:00:36,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-11 12:00:36,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 1686 transitions. [2018-09-11 12:00:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-09-11 12:00:36,218 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 12:00:36,218 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:00:36,219 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 12:00:36,219 INFO L82 PathProgramCache]: Analyzing trace with hash -233885150, now seen corresponding path program 1 times [2018-09-11 12:00:36,219 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 12:00:36,219 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 277 with the following transitions: [2018-09-11 12:00:36,220 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], [339], [341], [344], [352], [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], [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 12:00:36,233 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 12:00:36,233 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