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_label33_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 22:37:04,555 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 22:37:04,559 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 22:37:04,581 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 22:37:04,582 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 22:37:04,583 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 22:37:04,586 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 22:37:04,588 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 22:37:04,592 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 22:37:04,598 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 22:37:04,602 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 22:37:04,603 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 22:37:04,607 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 22:37:04,608 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 22:37:04,610 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 22:37:04,615 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 22:37:04,616 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 22:37:04,618 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 22:37:04,620 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 22:37:04,621 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 22:37:04,623 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 22:37:04,624 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 22:37:04,627 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 22:37:04,628 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 22:37:04,628 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 22:37:04,629 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 22:37:04,631 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 22:37:04,633 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 22:37:04,635 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 22:37:04,636 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 22:37:04,636 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 22:37:04,637 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 22:37:04,637 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 22:37:04,640 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 22:37:04,641 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 22:37:04,642 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 22:37:04,642 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 22:37:04,678 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 22:37:04,679 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 22:37:04,680 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 22:37:04,680 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 22:37:04,680 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 22:37:04,681 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 22:37:04,681 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 22:37:04,682 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 22:37:04,682 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 22:37:04,682 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 22:37:04,682 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 22:37:04,683 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 22:37:04,684 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 22:37:04,684 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 22:37:04,685 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 22:37:04,685 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 22:37:04,685 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 22:37:04,685 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 22:37:04,686 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 22:37:04,686 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 22:37:04,686 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 22:37:04,688 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 22:37:04,688 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 22:37:04,689 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 22:37:04,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 22:37:04,689 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 22:37:04,689 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 22:37:04,689 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 22:37:04,690 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 22:37:04,690 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 22:37:04,690 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 22:37:04,690 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 22:37:04,691 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 22:37:04,691 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 22:37:04,770 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 22:37:04,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 22:37:04,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 22:37:04,797 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 22:37:04,798 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 22:37:04,799 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label33_true-unreach-call_false-termination.c [2018-09-11 22:37:05,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70777653/32ed33758cfc4a92aab16c63eb67428d/FLAGb1b8a90e4 [2018-09-11 22:37:05,493 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 22:37:05,494 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label33_true-unreach-call_false-termination.c [2018-09-11 22:37:05,521 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70777653/32ed33758cfc4a92aab16c63eb67428d/FLAGb1b8a90e4 [2018-09-11 22:37:05,545 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b70777653/32ed33758cfc4a92aab16c63eb67428d [2018-09-11 22:37:05,557 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 22:37:05,561 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 22:37:05,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 22:37:05,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 22:37:05,572 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 22:37:05,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 10:37:05" (1/1) ... [2018-09-11 22:37:05,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f47f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:05, skipping insertion in model container [2018-09-11 22:37:05,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 10:37:05" (1/1) ... [2018-09-11 22:37:05,854 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 22:37:06,262 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 22:37:06,283 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 22:37:06,464 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 22:37:06,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06 WrapperNode [2018-09-11 22:37:06,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 22:37:06,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 22:37:06,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 22:37:06,522 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 22:37:06,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 22:37:06,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 22:37:06,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 22:37:06,679 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 22:37:06,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (1/1) ... [2018-09-11 22:37:06,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 22:37:06,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 22:37:06,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 22:37:06,995 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 22:37:06,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (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 22:37:07,069 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 22:37:07,069 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 22:37:07,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 22:37:07,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 22:37:07,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 22:37:07,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 22:37:07,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 22:37:07,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 22:37:10,911 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 22:37:10,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 10:37:10 BoogieIcfgContainer [2018-09-11 22:37:10,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 22:37:10,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 22:37:10,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 22:37:10,918 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 22:37:10,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 10:37:05" (1/3) ... [2018-09-11 22:37:10,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339102c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 10:37:10, skipping insertion in model container [2018-09-11 22:37:10,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 10:37:06" (2/3) ... [2018-09-11 22:37:10,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@339102c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 10:37:10, skipping insertion in model container [2018-09-11 22:37:10,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 10:37:10" (3/3) ... [2018-09-11 22:37:10,922 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label33_true-unreach-call_false-termination.c [2018-09-11 22:37:10,934 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 22:37:10,943 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 22:37:10,995 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 22:37:10,996 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 22:37:10,996 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 22:37:10,996 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 22:37:10,996 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 22:37:10,997 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 22:37:10,997 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 22:37:10,997 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 22:37:10,997 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 22:37:11,024 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-11 22:37:11,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-09-11 22:37:11,035 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:37:11,037 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 22:37:11,038 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 22:37:11,044 INFO L82 PathProgramCache]: Analyzing trace with hash -576164841, now seen corresponding path program 1 times [2018-09-11 22:37:11,047 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:37:11,048 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 66 with the following transitions: [2018-09-11 22:37:11,051 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 22:37:11,114 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:37:11,115 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:37:13,435 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:37:13,437 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 22:37:13,465 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:37:14,705 INFO L232 lantSequenceWeakener]: Weakened 63 states. On average, predicates are now at 80.78% of their original sizes. [2018-09-11 22:37:14,705 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:37:15,026 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:37:15,027 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:37:15,028 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 22:37:15,028 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:37:15,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 22:37:15,042 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 22:37:15,043 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 22:37:15,046 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-09-11 22:37:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:37:20,841 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-09-11 22:37:20,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 22:37:20,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2018-09-11 22:37:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:37:20,865 INFO L225 Difference]: With dead ends: 693 [2018-09-11 22:37:20,865 INFO L226 Difference]: Without dead ends: 436 [2018-09-11 22:37:20,872 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 22:37:20,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-09-11 22:37:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-09-11 22:37:20,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-11 22:37:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-09-11 22:37:20,961 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 65 [2018-09-11 22:37:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:37:20,962 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-09-11 22:37:20,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 22:37:20,963 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-09-11 22:37:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-11 22:37:20,971 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:37:20,971 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 22:37:20,972 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 22:37:20,972 INFO L82 PathProgramCache]: Analyzing trace with hash 115761067, now seen corresponding path program 1 times [2018-09-11 22:37:20,973 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:37:20,973 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 151 with the following transitions: [2018-09-11 22:37:20,973 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 22:37:20,981 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:37:20,981 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:37:29,436 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:37:29,436 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 22:37:29,470 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:37:32,022 INFO L232 lantSequenceWeakener]: Weakened 148 states. On average, predicates are now at 78.83% of their original sizes. [2018-09-11 22:37:32,023 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:37:36,392 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:37:36,392 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:37:36,393 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-11 22:37:36,393 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:37:36,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-11 22:37:36,395 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-11 22:37:36,395 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-11 22:37:36,396 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 14 states. [2018-09-11 22:37:53,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:37:53,865 INFO L93 Difference]: Finished difference Result 1340 states and 2335 transitions. [2018-09-11 22:37:53,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-11 22:37:53,866 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 150 [2018-09-11 22:37:53,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:37:53,877 INFO L225 Difference]: With dead ends: 1340 [2018-09-11 22:37:53,877 INFO L226 Difference]: Without dead ends: 1095 [2018-09-11 22:37:53,881 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 162 GetRequests, 99 SyntacticMatches, 38 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2018-09-11 22:37:53,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-09-11 22:37:53,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 850. [2018-09-11 22:37:53,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2018-09-11 22:37:53,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1058 transitions. [2018-09-11 22:37:53,936 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1058 transitions. Word has length 150 [2018-09-11 22:37:53,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:37:53,937 INFO L480 AbstractCegarLoop]: Abstraction has 850 states and 1058 transitions. [2018-09-11 22:37:53,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-11 22:37:53,937 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1058 transitions. [2018-09-11 22:37:53,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-09-11 22:37:53,942 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:37:53,943 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 22:37:53,943 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 22:37:53,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1906627521, now seen corresponding path program 1 times [2018-09-11 22:37:53,944 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:37:53,944 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-09-11 22:37:53,945 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 22:37:53,951 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:37:53,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:38:04,116 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:38:04,117 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 22:38:04,125 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:38:06,388 INFO L232 lantSequenceWeakener]: Weakened 174 states. On average, predicates are now at 78.59% of their original sizes. [2018-09-11 22:38:06,388 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:38:06,886 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:38:06,886 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:38:06,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-11 22:38:06,886 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:38:06,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-11 22:38:06,887 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-11 22:38:06,888 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-09-11 22:38:06,888 INFO L87 Difference]: Start difference. First operand 850 states and 1058 transitions. Second operand 12 states. [2018-09-11 22:38:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:38:15,115 INFO L93 Difference]: Finished difference Result 1283 states and 1842 transitions. [2018-09-11 22:38:15,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-11 22:38:15,120 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 176 [2018-09-11 22:38:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:38:15,133 INFO L225 Difference]: With dead ends: 1283 [2018-09-11 22:38:15,133 INFO L226 Difference]: Without dead ends: 1038 [2018-09-11 22:38:15,137 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 184 GetRequests, 165 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 22:38:15,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2018-09-11 22:38:15,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1035. [2018-09-11 22:38:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2018-09-11 22:38:15,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1256 transitions. [2018-09-11 22:38:15,186 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1256 transitions. Word has length 176 [2018-09-11 22:38:15,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:38:15,187 INFO L480 AbstractCegarLoop]: Abstraction has 1035 states and 1256 transitions. [2018-09-11 22:38:15,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-11 22:38:15,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1256 transitions. [2018-09-11 22:38:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-09-11 22:38:15,201 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:38:15,202 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 22:38:15,202 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 22:38:15,202 INFO L82 PathProgramCache]: Analyzing trace with hash -364573141, now seen corresponding path program 1 times [2018-09-11 22:38:15,202 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:38:15,203 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-09-11 22:38:15,203 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 22:38:15,210 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:38:15,210 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 22:38:39,875 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 22:38:39,875 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 22:38:39,880 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 22:38:42,550 INFO L232 lantSequenceWeakener]: Weakened 259 states. On average, predicates are now at 78.22% of their original sizes. [2018-09-11 22:38:42,551 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 22:38:48,679 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 22:38:48,680 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 22:38:48,680 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-09-11 22:38:48,680 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 22:38:48,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-11 22:38:48,682 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-11 22:38:48,682 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2018-09-11 22:38:48,683 INFO L87 Difference]: Start difference. First operand 1035 states and 1256 transitions. Second operand 17 states. [2018-09-11 22:39:07,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 22:39:07,784 INFO L93 Difference]: Finished difference Result 2673 states and 3868 transitions. [2018-09-11 22:39:07,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-11 22:39:07,785 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 261 [2018-09-11 22:39:07,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 22:39:07,802 INFO L225 Difference]: With dead ends: 2673 [2018-09-11 22:39:07,802 INFO L226 Difference]: Without dead ends: 2012 [2018-09-11 22:39:07,808 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 281 GetRequests, 178 SyntacticMatches, 67 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=312, Invalid=1094, Unknown=0, NotChecked=0, Total=1406 [2018-09-11 22:39:07,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2018-09-11 22:39:07,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 1652. [2018-09-11 22:39:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2018-09-11 22:39:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1949 transitions. [2018-09-11 22:39:07,877 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1949 transitions. Word has length 261 [2018-09-11 22:39:07,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 22:39:07,878 INFO L480 AbstractCegarLoop]: Abstraction has 1652 states and 1949 transitions. [2018-09-11 22:39:07,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-11 22:39:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1949 transitions. [2018-09-11 22:39:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-11 22:39:07,885 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 22:39:07,885 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 22:39:07,886 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 22:39:07,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1713554602, now seen corresponding path program 1 times [2018-09-11 22:39:07,886 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 22:39:07,887 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 287 with the following transitions: [2018-09-11 22:39:07,887 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 22:39:07,893 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 22:39:07,893 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