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/Problem10_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-08 13:23:04,959 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-08 13:23:04,961 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-08 13:23:04,974 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-08 13:23:04,975 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-08 13:23:04,976 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-08 13:23:04,977 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-08 13:23:04,979 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-08 13:23:04,981 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-08 13:23:04,981 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-08 13:23:04,982 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-08 13:23:04,983 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-08 13:23:04,984 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-08 13:23:04,985 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-08 13:23:04,986 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-08 13:23:04,987 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-08 13:23:04,987 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-08 13:23:04,989 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-08 13:23:04,991 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-08 13:23:04,993 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-08 13:23:04,994 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-08 13:23:04,995 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-08 13:23:04,998 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-08 13:23:04,998 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-08 13:23:04,998 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-08 13:23:04,999 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-08 13:23:05,000 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-08 13:23:05,001 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-08 13:23:05,002 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-08 13:23:05,006 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-08 13:23:05,006 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-08 13:23:05,007 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-08 13:23:05,008 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-08 13:23:05,008 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-08 13:23:05,009 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-08 13:23:05,010 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-08 13:23:05,010 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 [2018-08-08 13:23:05,042 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-08 13:23:05,043 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-08 13:23:05,044 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-08 13:23:05,044 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-08 13:23:05,044 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-08 13:23:05,044 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-08 13:23:05,045 INFO L133 SettingsManager]: * Congruence Domain=false [2018-08-08 13:23:05,045 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-08 13:23:05,045 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-08-08 13:23:05,045 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-08 13:23:05,045 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-08 13:23:05,045 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-08 13:23:05,046 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-08 13:23:05,046 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-08 13:23:05,047 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-08 13:23:05,047 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-08 13:23:05,047 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-08 13:23:05,048 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-08 13:23:05,048 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-08 13:23:05,048 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-08 13:23:05,048 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-08 13:23:05,048 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-08 13:23:05,050 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-08 13:23:05,050 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-08 13:23:05,050 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 13:23:05,050 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-08 13:23:05,050 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-08 13:23:05,051 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-08 13:23:05,051 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-08-08 13:23:05,051 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-08 13:23:05,051 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-08 13:23:05,052 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-08 13:23:05,052 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-08 13:23:05,052 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-08 13:23:05,107 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-08 13:23:05,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-08 13:23:05,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-08 13:23:05,124 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-08 13:23:05,125 INFO L276 PluginConnector]: CDTParser initialized [2018-08-08 13:23:05,125 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30_true-unreach-call.c [2018-08-08 13:23:05,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f95ea69b9/43f031d1f857485a8c22002c59a75d4c/FLAG03a00d589 [2018-08-08 13:23:05,726 INFO L276 CDTParser]: Found 1 translation units. [2018-08-08 13:23:05,730 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label30_true-unreach-call.c [2018-08-08 13:23:05,758 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f95ea69b9/43f031d1f857485a8c22002c59a75d4c/FLAG03a00d589 [2018-08-08 13:23:05,782 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f95ea69b9/43f031d1f857485a8c22002c59a75d4c [2018-08-08 13:23:05,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-08 13:23:05,799 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-08 13:23:05,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-08 13:23:05,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-08 13:23:05,810 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-08 13:23:05,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 01:23:05" (1/1) ... [2018-08-08 13:23:05,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69bd2774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:05, skipping insertion in model container [2018-08-08 13:23:05,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 01:23:05" (1/1) ... [2018-08-08 13:23:06,065 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-08 13:23:06,369 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 13:23:06,382 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-08 13:23:06,520 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 13:23:06,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:06 WrapperNode [2018-08-08 13:23:06,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-08 13:23:06,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-08 13:23:06,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-08 13:23:06,591 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-08 13:23:06,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:06" (1/1) ... [2018-08-08 13:23:06,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:06" (1/1) ... [2018-08-08 13:23:06,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-08 13:23:06,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-08 13:23:06,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-08 13:23:06,730 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-08 13:23:06,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:06" (1/1) ... [2018-08-08 13:23:06,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:06" (1/1) ... [2018-08-08 13:23:06,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:06" (1/1) ... [2018-08-08 13:23:06,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:06" (1/1) ... [2018-08-08 13:23:06,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:06" (1/1) ... [2018-08-08 13:23:06,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:06" (1/1) ... [2018-08-08 13:23:06,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:06" (1/1) ... [2018-08-08 13:23:07,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-08 13:23:07,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-08 13:23:07,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-08 13:23:07,013 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-08 13:23:07,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:06" (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 [2018-08-08 13:23:07,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-08 13:23:07,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-08 13:23:07,086 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-08 13:23:07,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-08 13:23:07,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-08 13:23:07,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-08 13:23:07,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-08 13:23:07,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-08 13:23:10,501 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-08 13:23:10,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 01:23:10 BoogieIcfgContainer [2018-08-08 13:23:10,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-08 13:23:10,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-08 13:23:10,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-08 13:23:10,506 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-08 13:23:10,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.08 01:23:05" (1/3) ... [2018-08-08 13:23:10,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a243f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 01:23:10, skipping insertion in model container [2018-08-08 13:23:10,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 01:23:06" (2/3) ... [2018-08-08 13:23:10,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a243f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 01:23:10, skipping insertion in model container [2018-08-08 13:23:10,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 01:23:10" (3/3) ... [2018-08-08 13:23:10,511 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label30_true-unreach-call.c [2018-08-08 13:23:10,521 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-08 13:23:10,530 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-08 13:23:10,581 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-08 13:23:10,582 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-08 13:23:10,582 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-08 13:23:10,582 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-08 13:23:10,583 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-08 13:23:10,583 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-08 13:23:10,583 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-08 13:23:10,583 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-08 13:23:10,583 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-08 13:23:10,610 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-08-08 13:23:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-08-08 13:23:10,626 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 13:23:10,627 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] [2018-08-08 13:23:10,629 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 13:23:10,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1431628569, now seen corresponding path program 1 times [2018-08-08 13:23:10,638 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 13:23:10,639 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 42 with the following transitions: [2018-08-08 13:23:10,641 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [796], [800], [806], [810], [817], [818], [819], [821] [2018-08-08 13:23:10,714 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-08-08 13:23:10,715 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 13:23:11,941 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 13:23:11,943 INFO L272 AbstractInterpreter]: Visited 40 different actions 40 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-08-08 13:23:11,970 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 13:23:12,547 INFO L232 lantSequenceWeakener]: Weakened 39 states. On average, predicates are now at 75.26% of their original sizes. [2018-08-08 13:23:12,547 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 13:23:12,856 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 13:23:12,857 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 13:23:12,858 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-08 13:23:12,858 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 13:23:12,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-08 13:23:12,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-08 13:23:12,875 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 13:23:12,878 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 6 states. [2018-08-08 13:23:18,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 13:23:18,062 INFO L93 Difference]: Finished difference Result 576 states and 995 transitions. [2018-08-08 13:23:18,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-08 13:23:18,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2018-08-08 13:23:18,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 13:23:18,082 INFO L225 Difference]: With dead ends: 576 [2018-08-08 13:23:18,082 INFO L226 Difference]: Without dead ends: 358 [2018-08-08 13:23:18,089 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 13:23:18,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-08-08 13:23:18,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2018-08-08 13:23:18,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-08-08 13:23:18,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 497 transitions. [2018-08-08 13:23:18,165 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 497 transitions. Word has length 41 [2018-08-08 13:23:18,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 13:23:18,166 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 497 transitions. [2018-08-08 13:23:18,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-08 13:23:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 497 transitions. [2018-08-08 13:23:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-08-08 13:23:18,172 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 13:23:18,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 13:23:18,172 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 13:23:18,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1295784565, now seen corresponding path program 1 times [2018-08-08 13:23:18,173 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 13:23:18,173 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2018-08-08 13:23:18,174 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-08-08 13:23:18,180 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-08-08 13:23:18,181 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 13:23:19,819 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-08-08 13:23:22,532 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 13:23:22,533 INFO L272 AbstractInterpreter]: Visited 78 different actions 150 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-08-08 13:23:22,538 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 13:23:24,094 INFO L232 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 73.75% of their original sizes. [2018-08-08 13:23:24,094 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 13:23:25,120 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 13:23:25,121 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 13:23:25,121 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-08-08 13:23:25,121 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 13:23:25,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-08-08 13:23:25,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-08-08 13:23:25,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-08-08 13:23:25,123 INFO L87 Difference]: Start difference. First operand 356 states and 497 transitions. Second operand 10 states. [2018-08-08 13:23:37,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 13:23:37,334 INFO L93 Difference]: Finished difference Result 711 states and 1126 transitions. [2018-08-08 13:23:37,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-08-08 13:23:37,335 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 112 [2018-08-08 13:23:37,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 13:23:37,342 INFO L225 Difference]: With dead ends: 711 [2018-08-08 13:23:37,342 INFO L226 Difference]: Without dead ends: 505 [2018-08-08 13:23:37,344 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-08-08 13:23:37,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-08-08 13:23:37,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 502. [2018-08-08 13:23:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2018-08-08 13:23:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 655 transitions. [2018-08-08 13:23:37,384 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 655 transitions. Word has length 112 [2018-08-08 13:23:37,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 13:23:37,385 INFO L480 AbstractCegarLoop]: Abstraction has 502 states and 655 transitions. [2018-08-08 13:23:37,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-08-08 13:23:37,386 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 655 transitions. [2018-08-08 13:23:37,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-08-08 13:23:37,389 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 13:23:37,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 13:23:37,389 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 13:23:37,390 INFO L82 PathProgramCache]: Analyzing trace with hash 181448388, now seen corresponding path program 1 times [2018-08-08 13:23:37,390 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 13:23:37,390 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 122 with the following transitions: [2018-08-08 13:23:37,390 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-08-08 13:23:37,396 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-08-08 13:23:37,397 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 13:23:41,996 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 13:23:41,996 INFO L272 AbstractInterpreter]: Visited 87 different actions 167 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-08-08 13:23:42,000 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 13:23:42,814 INFO L232 lantSequenceWeakener]: Weakened 119 states. On average, predicates are now at 73.67% of their original sizes. [2018-08-08 13:23:42,814 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 13:23:43,428 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 13:23:43,428 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 13:23:43,429 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-08-08 13:23:43,429 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 13:23:43,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-08-08 13:23:43,430 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-08-08 13:23:43,430 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-08-08 13:23:43,430 INFO L87 Difference]: Start difference. First operand 502 states and 655 transitions. Second operand 12 states. [2018-08-08 13:23:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 13:23:56,677 INFO L93 Difference]: Finished difference Result 1002 states and 1569 transitions. [2018-08-08 13:23:56,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-08-08 13:23:56,679 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 121 [2018-08-08 13:23:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 13:23:56,688 INFO L225 Difference]: With dead ends: 1002 [2018-08-08 13:23:56,688 INFO L226 Difference]: Without dead ends: 796 [2018-08-08 13:23:56,690 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 128 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2018-08-08 13:23:56,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2018-08-08 13:23:56,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 793. [2018-08-08 13:23:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2018-08-08 13:23:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 962 transitions. [2018-08-08 13:23:56,737 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 962 transitions. Word has length 121 [2018-08-08 13:23:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 13:23:56,738 INFO L480 AbstractCegarLoop]: Abstraction has 793 states and 962 transitions. [2018-08-08 13:23:56,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-08-08 13:23:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 962 transitions. [2018-08-08 13:23:56,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-08-08 13:23:56,743 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 13:23:56,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 13:23:56,744 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 13:23:56,744 INFO L82 PathProgramCache]: Analyzing trace with hash -364083764, now seen corresponding path program 1 times [2018-08-08 13:23:56,744 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 13:23:56,744 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 158 with the following transitions: [2018-08-08 13:23:56,745 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-08-08 13:23:56,750 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-08-08 13:23:56,750 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 13:24:01,003 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-08-08 13:24:11,675 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 13:24:11,675 INFO L272 AbstractInterpreter]: Visited 123 different actions 356 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-08-08 13:24:11,679 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 13:24:13,753 INFO L232 lantSequenceWeakener]: Weakened 155 states. On average, predicates are now at 73.45% of their original sizes. [2018-08-08 13:24:13,753 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 13:24:14,693 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 13:24:14,694 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 13:24:14,694 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-08-08 13:24:14,694 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 13:24:14,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-08-08 13:24:14,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-08-08 13:24:14,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-08-08 13:24:14,695 INFO L87 Difference]: Start difference. First operand 793 states and 962 transitions. Second operand 14 states. [2018-08-08 13:24:24,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 13:24:24,593 INFO L93 Difference]: Finished difference Result 1161 states and 1610 transitions. [2018-08-08 13:24:24,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-08-08 13:24:24,595 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 157 [2018-08-08 13:24:24,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 13:24:24,604 INFO L225 Difference]: With dead ends: 1161 [2018-08-08 13:24:24,605 INFO L226 Difference]: Without dead ends: 955 [2018-08-08 13:24:24,606 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 168 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2018-08-08 13:24:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2018-08-08 13:24:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 943. [2018-08-08 13:24:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2018-08-08 13:24:24,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1137 transitions. [2018-08-08 13:24:24,662 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1137 transitions. Word has length 157 [2018-08-08 13:24:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 13:24:24,663 INFO L480 AbstractCegarLoop]: Abstraction has 943 states and 1137 transitions. [2018-08-08 13:24:24,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-08-08 13:24:24,663 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1137 transitions. [2018-08-08 13:24:24,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-08-08 13:24:24,669 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 13:24:24,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 13:24:24,669 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 13:24:24,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1283872245, now seen corresponding path program 1 times [2018-08-08 13:24:24,670 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 13:24:24,670 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-08-08 13:24:24,671 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [754], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-08-08 13:24:24,682 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-08-08 13:24:24,682 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 13:24:38,899 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 13:24:38,899 INFO L272 AbstractInterpreter]: Visited 142 different actions 278 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-08-08 13:24:38,906 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 13:24:40,692 INFO L232 lantSequenceWeakener]: Weakened 174 states. On average, predicates are now at 73.37% of their original sizes. [2018-08-08 13:24:40,693 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 13:24:42,458 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 13:24:42,458 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 13:24:42,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2018-08-08 13:24:42,459 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 13:24:42,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-08-08 13:24:42,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-08-08 13:24:42,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-08-08 13:24:42,460 INFO L87 Difference]: Start difference. First operand 943 states and 1137 transitions. Second operand 18 states. [2018-08-08 13:24:54,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 13:24:54,626 INFO L93 Difference]: Finished difference Result 1561 states and 2167 transitions. [2018-08-08 13:24:54,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-08-08 13:24:54,628 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 176 [2018-08-08 13:24:54,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 13:24:54,634 INFO L225 Difference]: With dead ends: 1561 [2018-08-08 13:24:54,634 INFO L226 Difference]: Without dead ends: 1207 [2018-08-08 13:24:54,636 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 192 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=287, Invalid=903, Unknown=0, NotChecked=0, Total=1190 [2018-08-08 13:24:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2018-08-08 13:24:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 1205. [2018-08-08 13:24:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1205 states. [2018-08-08 13:24:54,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1418 transitions. [2018-08-08 13:24:54,689 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1418 transitions. Word has length 176 [2018-08-08 13:24:54,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 13:24:54,690 INFO L480 AbstractCegarLoop]: Abstraction has 1205 states and 1418 transitions. [2018-08-08 13:24:54,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-08-08 13:24:54,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1418 transitions. [2018-08-08 13:24:54,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-08-08 13:24:54,693 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 13:24:54,694 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-08 13:24:54,694 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 13:24:54,694 INFO L82 PathProgramCache]: Analyzing trace with hash -673837714, now seen corresponding path program 1 times [2018-08-08 13:24:54,694 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 13:24:54,694 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 189 with the following transitions: [2018-08-08 13:24:54,695 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [518], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-08-08 13:24:54,703 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-08-08 13:24:54,703 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 13:24:56,141 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-08-08 13:25:03,303 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 13:25:03,303 INFO L272 AbstractInterpreter]: Visited 84 different actions 244 times. Merged at 7 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-08-08 13:25:03,310 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 13:25:05,011 INFO L232 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 73.39% of their original sizes. [2018-08-08 13:25:05,011 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 13:25:05,651 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 13:25:05,652 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 13:25:05,652 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-08-08 13:25:05,652 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 13:25:05,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-08-08 13:25:05,652 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-08-08 13:25:05,653 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-08-08 13:25:05,653 INFO L87 Difference]: Start difference. First operand 1205 states and 1418 transitions. Second operand 11 states. [2018-08-08 13:25:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 13:25:13,671 INFO L93 Difference]: Finished difference Result 1717 states and 2233 transitions. [2018-08-08 13:25:13,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-08-08 13:25:13,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 188 [2018-08-08 13:25:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 13:25:13,679 INFO L225 Difference]: With dead ends: 1717 [2018-08-08 13:25:13,679 INFO L226 Difference]: Without dead ends: 1363 [2018-08-08 13:25:13,681 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 197 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2018-08-08 13:25:13,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2018-08-08 13:25:13,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1353. [2018-08-08 13:25:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1353 states. [2018-08-08 13:25:13,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1584 transitions. [2018-08-08 13:25:13,742 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1584 transitions. Word has length 188 [2018-08-08 13:25:13,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 13:25:13,743 INFO L480 AbstractCegarLoop]: Abstraction has 1353 states and 1584 transitions. [2018-08-08 13:25:13,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-08-08 13:25:13,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1584 transitions. [2018-08-08 13:25:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-08-08 13:25:13,746 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 13:25:13,747 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-08 13:25:13,747 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 13:25:13,747 INFO L82 PathProgramCache]: Analyzing trace with hash -800852682, now seen corresponding path program 1 times [2018-08-08 13:25:13,748 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 13:25:13,748 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 193 with the following transitions: [2018-08-08 13:25:13,748 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-08-08 13:25:13,750 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-08-08 13:25:13,750 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 13:25:15,152 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-08-08 13:25:33,643 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 13:25:33,644 INFO L272 AbstractInterpreter]: Visited 88 different actions 511 times. Merged at 7 different actions 38 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 2 different actions. Largest state had 24 variables. [2018-08-08 13:25:33,653 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 13:25:35,849 INFO L232 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 73.38% of their original sizes. [2018-08-08 13:25:35,850 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 13:25:36,845 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 13:25:36,845 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 13:25:36,846 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-08-08 13:25:36,846 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 13:25:36,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-08-08 13:25:36,846 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-08-08 13:25:36,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-08-08 13:25:36,847 INFO L87 Difference]: Start difference. First operand 1353 states and 1584 transitions. Second operand 14 states. [2018-08-08 13:25:56,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 13:25:56,666 INFO L93 Difference]: Finished difference Result 2668 states and 3597 transitions. [2018-08-08 13:25:56,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-08-08 13:25:56,669 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 192 [2018-08-08 13:25:56,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 13:25:56,678 INFO L225 Difference]: With dead ends: 2668 [2018-08-08 13:25:56,679 INFO L226 Difference]: Without dead ends: 2166 [2018-08-08 13:25:56,681 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 204 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2018-08-08 13:25:56,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2018-08-08 13:25:56,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2068. [2018-08-08 13:25:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2068 states. [2018-08-08 13:25:56,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2458 transitions. [2018-08-08 13:25:56,771 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2458 transitions. Word has length 192 [2018-08-08 13:25:56,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 13:25:56,772 INFO L480 AbstractCegarLoop]: Abstraction has 2068 states and 2458 transitions. [2018-08-08 13:25:56,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-08-08 13:25:56,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2458 transitions. [2018-08-08 13:25:56,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-08-08 13:25:56,777 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 13:25:56,777 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-08 13:25:56,777 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 13:25:56,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1055982157, now seen corresponding path program 1 times [2018-08-08 13:25:56,778 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 13:25:56,778 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-08-08 13:25:56,778 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-08-08 13:25:56,782 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-08-08 13:25:56,782 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 13:25:58,231 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-08-08 13:26:18,351 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 13:26:18,351 INFO L272 AbstractInterpreter]: Visited 121 different actions 356 times. Merged at 7 different actions 15 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-08-08 13:26:18,357 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 13:26:21,280 INFO L232 lantSequenceWeakener]: Weakened 223 states. On average, predicates are now at 73.28% of their original sizes. [2018-08-08 13:26:21,280 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 13:26:23,455 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 13:26:23,456 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 13:26:23,456 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2018-08-08 13:26:23,456 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 13:26:23,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-08-08 13:26:23,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-08-08 13:26:23,457 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2018-08-08 13:26:23,457 INFO L87 Difference]: Start difference. First operand 2068 states and 2458 transitions. Second operand 19 states. [2018-08-08 13:26:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 13:26:42,917 INFO L93 Difference]: Finished difference Result 4578 states and 5789 transitions. [2018-08-08 13:26:42,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-08-08 13:26:42,918 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 225 [2018-08-08 13:26:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 13:26:42,931 INFO L225 Difference]: With dead ends: 4578 [2018-08-08 13:26:42,931 INFO L226 Difference]: Without dead ends: 3070 [2018-08-08 13:26:42,937 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 243 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2018-08-08 13:26:42,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2018-08-08 13:26:43,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 3004. [2018-08-08 13:26:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3004 states. [2018-08-08 13:26:43,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 3582 transitions. [2018-08-08 13:26:43,075 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 3582 transitions. Word has length 225 [2018-08-08 13:26:43,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 13:26:43,076 INFO L480 AbstractCegarLoop]: Abstraction has 3004 states and 3582 transitions. [2018-08-08 13:26:43,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-08-08 13:26:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 3582 transitions. [2018-08-08 13:26:43,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-08-08 13:26:43,082 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 13:26:43,082 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-08-08 13:26:43,082 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 13:26:43,083 INFO L82 PathProgramCache]: Analyzing trace with hash 843353692, now seen corresponding path program 1 times [2018-08-08 13:26:43,083 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 13:26:43,083 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-08-08 13:26:43,084 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [229], [231], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-08-08 13:26:43,086 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-08-08 13:26:43,087 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 13:26:47,443 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-08-08 13:27:17,033 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 13:27:17,033 INFO L272 AbstractInterpreter]: Visited 124 different actions 604 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-08-08 13:27:17,043 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 13:27:19,553 INFO L232 lantSequenceWeakener]: Weakened 228 states. On average, predicates are now at 73.27% of their original sizes. [2018-08-08 13:27:19,554 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 13:27:23,868 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 13:27:23,868 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 13:27:23,868 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-08-08 13:27:23,868 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 13:27:23,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-08-08 13:27:23,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-08-08 13:27:23,869 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2018-08-08 13:27:23,869 INFO L87 Difference]: Start difference. First operand 3004 states and 3582 transitions. Second operand 17 states. Received shutdown request... [2018-08-08 13:27:31,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-08-08 13:27:31,074 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-08 13:27:31,079 WARN L202 ceAbstractionStarter]: Timeout [2018-08-08 13:27:31,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.08 01:27:31 BoogieIcfgContainer [2018-08-08 13:27:31,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-08 13:27:31,081 INFO L168 Benchmark]: Toolchain (without parser) took 265285.26 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -161.1 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-08-08 13:27:31,082 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-08-08 13:27:31,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-08-08 13:27:31,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 138.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-08-08 13:27:31,084 INFO L168 Benchmark]: Boogie Preprocessor took 282.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.1 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2018-08-08 13:27:31,085 INFO L168 Benchmark]: RCFGBuilder took 3489.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 109.4 MB). Peak memory consumption was 109.4 MB. Max. memory is 7.1 GB. [2018-08-08 13:27:31,086 INFO L168 Benchmark]: TraceAbstraction took 260577.16 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 526.8 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-08-08 13:27:31,091 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 787.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 138.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 282.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 758.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -850.1 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3489.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 109.4 MB). Peak memory consumption was 109.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 260577.16 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 526.8 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 106). Cancelled while BasicCegarLoop was constructing difference of abstraction (3004states) and FLOYD_HOARE automaton (currently 14 states, 17 states before enhancement), while ReachableStatesComputation was computing reachable states (743 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 260.5s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 107.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1642 SDtfs, 8098 SDslu, 2664 SDs, 0 SdLazy, 16870 SolverSat, 1769 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.0s Time, PredicateUnifierStatistics: 18 DeclaredPredicates, 1527 GetRequests, 1319 SyntacticMatches, 11 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 19.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3004occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 123.5s AbstIntTime, 9 AbstIntIterations, 9 AbstIntStrong, 0.9936574090674636 AbsIntWeakeningRatio, 0.13817166782972784 AbsIntAvgWeakeningVarsNumRemoved, 74.98464759246336 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 196 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label30_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-08_13-27-31-104.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label30_true-unreach-call.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-08_13-27-31-104.csv Completed graceful shutdown