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_label05_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 11:54:30,579 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 11:54:30,581 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 11:54:30,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 11:54:30,601 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 11:54:30,602 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 11:54:30,604 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 11:54:30,606 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 11:54:30,607 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 11:54:30,608 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 11:54:30,609 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 11:54:30,609 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 11:54:30,610 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 11:54:30,611 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 11:54:30,612 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 11:54:30,613 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 11:54:30,614 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 11:54:30,616 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 11:54:30,618 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 11:54:30,620 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 11:54:30,621 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 11:54:30,622 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 11:54:30,625 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 11:54:30,625 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 11:54:30,625 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 11:54:30,626 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 11:54:30,627 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 11:54:30,628 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 11:54:30,629 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 11:54:30,630 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 11:54:30,630 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 11:54:30,631 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 11:54:30,631 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 11:54:30,632 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 11:54:30,633 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 11:54:30,634 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 11:54:30,634 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 11:54:30,657 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 11:54:30,657 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 11:54:30,658 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 11:54:30,658 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 11:54:30,659 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 11:54:30,659 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 11:54:30,659 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 11:54:30,659 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-11 11:54:30,659 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 11:54:30,659 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 11:54:30,660 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 11:54:30,660 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 11:54:30,661 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 11:54:30,661 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 11:54:30,661 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 11:54:30,661 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 11:54:30,661 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 11:54:30,661 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 11:54:30,662 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 11:54:30,662 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 11:54:30,662 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 11:54:30,662 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 11:54:30,662 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 11:54:30,663 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 11:54:30,663 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 11:54:30,663 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 11:54:30,663 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 11:54:30,665 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 11:54:30,666 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 11:54:30,666 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 11:54:30,666 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 11:54:30,666 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 11:54:30,666 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 11:54:30,734 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 11:54:30,752 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 11:54:30,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 11:54:30,762 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 11:54:30,763 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 11:54:30,764 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label05_true-unreach-call_false-termination.c [2018-09-11 11:54:31,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0ba4754/9e53009f7aa14b988dc37448c7036524/FLAGaed6b5732 [2018-09-11 11:54:31,405 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 11:54:31,406 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label05_true-unreach-call_false-termination.c [2018-09-11 11:54:31,443 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0ba4754/9e53009f7aa14b988dc37448c7036524/FLAGaed6b5732 [2018-09-11 11:54:31,470 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c0ba4754/9e53009f7aa14b988dc37448c7036524 [2018-09-11 11:54:31,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 11:54:31,489 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 11:54:31,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 11:54:31,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 11:54:31,500 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 11:54:31,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:54:31" (1/1) ... [2018-09-11 11:54:31,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366b572e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:31, skipping insertion in model container [2018-09-11 11:54:31,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:54:31" (1/1) ... [2018-09-11 11:54:31,729 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 11:54:32,105 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:54:32,129 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 11:54:32,337 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:54:32,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:32 WrapperNode [2018-09-11 11:54:32,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 11:54:32,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 11:54:32,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 11:54:32,389 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 11:54:32,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:32" (1/1) ... [2018-09-11 11:54:32,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:32" (1/1) ... [2018-09-11 11:54:32,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 11:54:32,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 11:54:32,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 11:54:32,536 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 11:54:32,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:32" (1/1) ... [2018-09-11 11:54:32,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:32" (1/1) ... [2018-09-11 11:54:32,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:32" (1/1) ... [2018-09-11 11:54:32,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:32" (1/1) ... [2018-09-11 11:54:32,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:32" (1/1) ... [2018-09-11 11:54:32,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:32" (1/1) ... [2018-09-11 11:54:32,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:32" (1/1) ... [2018-09-11 11:54:32,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 11:54:32,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 11:54:32,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 11:54:32,849 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 11:54:32,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:32" (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 11:54:32,928 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 11:54:32,929 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 11:54:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 11:54:32,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 11:54:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 11:54:32,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 11:54:32,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 11:54:32,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 11:54:36,793 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 11:54:36,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:54:36 BoogieIcfgContainer [2018-09-11 11:54:36,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 11:54:36,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 11:54:36,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 11:54:36,799 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 11:54:36,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:54:31" (1/3) ... [2018-09-11 11:54:36,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5f35e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:54:36, skipping insertion in model container [2018-09-11 11:54:36,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:54:32" (2/3) ... [2018-09-11 11:54:36,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5f35e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:54:36, skipping insertion in model container [2018-09-11 11:54:36,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:54:36" (3/3) ... [2018-09-11 11:54:36,803 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label05_true-unreach-call_false-termination.c [2018-09-11 11:54:36,814 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 11:54:36,823 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 11:54:36,877 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 11:54:36,878 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 11:54:36,878 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 11:54:36,878 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 11:54:36,878 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 11:54:36,879 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 11:54:36,879 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 11:54:36,879 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 11:54:36,879 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 11:54:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-11 11:54:36,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-11 11:54:36,923 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:54:36,924 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 11:54:36,926 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 11:54:36,931 INFO L82 PathProgramCache]: Analyzing trace with hash -610249980, now seen corresponding path program 1 times [2018-09-11 11:54:36,933 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:54:36,934 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 71 with the following transitions: [2018-09-11 11:54:36,937 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [459], [461], [947], [948], [952], [956], [962], [966], [973], [974], [975], [977] [2018-09-11 11:54:37,002 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:54:37,002 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:54:38,664 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:54:38,666 INFO L272 AbstractInterpreter]: Visited 69 different actions 69 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-11 11:54:38,680 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:54:39,692 INFO L232 lantSequenceWeakener]: Weakened 68 states. On average, predicates are now at 80.85% of their original sizes. [2018-09-11 11:54:39,693 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:54:39,979 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:54:39,981 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:54:39,981 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 11:54:39,981 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:54:39,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 11:54:39,994 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 11:54:39,995 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 11:54:39,998 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-09-11 11:54:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:54:45,345 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-09-11 11:54:45,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 11:54:45,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2018-09-11 11:54:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:54:45,368 INFO L225 Difference]: With dead ends: 693 [2018-09-11 11:54:45,368 INFO L226 Difference]: Without dead ends: 436 [2018-09-11 11:54:45,381 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 69 GetRequests, 65 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 11:54:45,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-09-11 11:54:45,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-09-11 11:54:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-11 11:54:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-09-11 11:54:45,472 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 70 [2018-09-11 11:54:45,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:54:45,473 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-09-11 11:54:45,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 11:54:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-09-11 11:54:45,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-09-11 11:54:45,482 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:54:45,482 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 11:54:45,483 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 11:54:45,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1309322449, now seen corresponding path program 1 times [2018-09-11 11:54:45,483 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:54:45,484 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 156 with the following transitions: [2018-09-11 11:54:45,484 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [459], [461], [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 11:54:45,490 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:54:45,491 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:54:53,616 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:54:53,616 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 11:54:53,624 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:54:56,706 INFO L232 lantSequenceWeakener]: Weakened 153 states. On average, predicates are now at 78.95% of their original sizes. [2018-09-11 11:54:56,706 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:54:58,556 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:54:58,557 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:54:58,557 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 11:54:58,557 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:54:58,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 11:54:58,559 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 11:54:58,560 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-11 11:54:58,560 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 11 states. [2018-09-11 11:55:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:55:08,674 INFO L93 Difference]: Finished difference Result 1051 states and 1763 transitions. [2018-09-11 11:55:08,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-11 11:55:08,675 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 155 [2018-09-11 11:55:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:55:08,682 INFO L225 Difference]: With dead ends: 1051 [2018-09-11 11:55:08,683 INFO L226 Difference]: Without dead ends: 806 [2018-09-11 11:55:08,686 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 161 GetRequests, 87 SyntacticMatches, 58 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-11 11:55:08,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-09-11 11:55:08,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 803. [2018-09-11 11:55:08,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2018-09-11 11:55:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1002 transitions. [2018-09-11 11:55:08,742 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1002 transitions. Word has length 155 [2018-09-11 11:55:08,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:55:08,743 INFO L480 AbstractCegarLoop]: Abstraction has 803 states and 1002 transitions. [2018-09-11 11:55:08,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 11:55:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1002 transitions. [2018-09-11 11:55:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-09-11 11:55:08,748 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:55:08,749 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:08,749 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 11:55:08,749 INFO L82 PathProgramCache]: Analyzing trace with hash 803624317, now seen corresponding path program 1 times [2018-09-11 11:55:08,750 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:55:08,750 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-09-11 11:55:08,751 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [459], [461], [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 11:55:08,760 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:55:08,761 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:55:22,213 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:55:22,214 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 11:55:22,218 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:55:27,384 INFO L232 lantSequenceWeakener]: Weakened 179 states. On average, predicates are now at 78.7% of their original sizes. [2018-09-11 11:55:27,385 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:55:29,202 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:55:29,202 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:55:29,203 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 11:55:29,203 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:55:29,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 11:55:29,204 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 11:55:29,205 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-11 11:55:29,205 INFO L87 Difference]: Start difference. First operand 803 states and 1002 transitions. Second operand 11 states. [2018-09-11 11:55:40,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:55:40,870 INFO L93 Difference]: Finished difference Result 1236 states and 1786 transitions. [2018-09-11 11:55:40,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-11 11:55:40,875 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 181 [2018-09-11 11:55:40,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:55:40,883 INFO L225 Difference]: With dead ends: 1236 [2018-09-11 11:55:40,890 INFO L226 Difference]: Without dead ends: 991 [2018-09-11 11:55:40,892 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 188 GetRequests, 113 SyntacticMatches, 58 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-09-11 11:55:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2018-09-11 11:55:40,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 988. [2018-09-11 11:55:40,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2018-09-11 11:55:40,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1200 transitions. [2018-09-11 11:55:40,947 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1200 transitions. Word has length 181 [2018-09-11 11:55:40,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:55:40,948 INFO L480 AbstractCegarLoop]: Abstraction has 988 states and 1200 transitions. [2018-09-11 11:55:40,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 11:55:40,948 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1200 transitions. [2018-09-11 11:55:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-11 11:55:40,962 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:55:40,963 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 11:55:40,963 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 11:55:40,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1317561360, now seen corresponding path program 1 times [2018-09-11 11:55:40,963 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:55:40,964 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-09-11 11:55:40,964 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [459], [461], [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 11:55:40,975 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:55:40,976 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:55:52,343 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:55:52,343 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 11:55:52,348 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:55:54,001 INFO L232 lantSequenceWeakener]: Weakened 264 states. On average, predicates are now at 78.27% of their original sizes. [2018-09-11 11:55:54,001 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:55:54,868 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:55:54,869 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:55:54,869 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-09-11 11:55:54,869 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:55:54,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-11 11:55:54,871 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-11 11:55:54,871 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-09-11 11:55:54,872 INFO L87 Difference]: Start difference. First operand 988 states and 1200 transitions. Second operand 17 states. [2018-09-11 11:56:13,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:56:13,524 INFO L93 Difference]: Finished difference Result 2115 states and 3322 transitions. [2018-09-11 11:56:13,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-11 11:56:13,526 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 266 [2018-09-11 11:56:13,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:56:13,538 INFO L225 Difference]: With dead ends: 2115 [2018-09-11 11:56:13,538 INFO L226 Difference]: Without dead ends: 1870 [2018-09-11 11:56:13,542 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 287 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=317, Invalid=1165, Unknown=0, NotChecked=0, Total=1482 [2018-09-11 11:56:13,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-09-11 11:56:13,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1733. [2018-09-11 11:56:13,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-09-11 11:56:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2040 transitions. [2018-09-11 11:56:13,611 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2040 transitions. Word has length 266 [2018-09-11 11:56:13,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:56:13,612 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 2040 transitions. [2018-09-11 11:56:13,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-11 11:56:13,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2040 transitions. [2018-09-11 11:56:13,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-09-11 11:56:13,620 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:56:13,620 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:56:13,620 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 11:56:13,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1165759375, now seen corresponding path program 1 times [2018-09-11 11:56:13,621 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:56:13,621 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 292 with the following transitions: [2018-09-11 11:56:13,622 INFO L202 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [223], [231], [239], [247], [255], [263], [271], [279], [287], [295], [303], [311], [319], [327], [335], [343], [351], [359], [367], [375], [383], [391], [399], [407], [415], [423], [431], [439], [447], [455], [459], [461], [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 11:56:13,627 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:56:13,628 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