java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-19 10:38:31,686 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 10:38:31,688 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 10:38:31,703 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 10:38:31,703 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 10:38:31,704 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 10:38:31,705 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 10:38:31,707 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 10:38:31,709 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 10:38:31,710 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 10:38:31,710 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 10:38:31,711 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 10:38:31,712 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 10:38:31,712 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 10:38:31,714 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 10:38:31,714 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 10:38:31,715 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 10:38:31,717 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 10:38:31,719 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 10:38:31,721 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 10:38:31,722 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 10:38:31,723 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 10:38:31,725 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 10:38:31,734 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-19 10:38:31,750 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 10:38:31,750 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 10:38:31,751 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 10:38:31,751 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-19 10:38:31,751 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-19 10:38:31,751 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-19 10:38:31,752 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-19 10:38:31,752 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-19 10:38:31,752 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-19 10:38:31,752 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-19 10:38:31,752 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-19 10:38:31,753 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-19 10:38:31,753 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-19 10:38:31,753 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 10:38:31,754 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-19 10:38:31,754 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 10:38:31,754 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 10:38:31,754 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 10:38:31,754 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 10:38:31,754 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 10:38:31,755 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 10:38:31,755 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 10:38:31,755 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 10:38:31,755 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 10:38:31,755 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 10:38:31,756 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 10:38:31,756 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 10:38:31,756 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 10:38:31,757 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 10:38:31,757 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-19 10:38:31,757 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 10:38:31,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-19 10:38:31,758 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 10:38:31,758 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-19 10:38:31,758 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-19 10:38:31,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 10:38:31,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 10:38:31,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 10:38:31,837 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 10:38:31,837 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 10:38:31,838 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01_true-unreach-call_false-termination.c [2018-09-19 10:38:32,182 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c029b299e/3eceab5b250c458986ad007911c34676/FLAG127573aa8 [2018-09-19 10:38:32,494 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 10:38:32,495 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label01_true-unreach-call_false-termination.c [2018-09-19 10:38:32,513 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c029b299e/3eceab5b250c458986ad007911c34676/FLAG127573aa8 [2018-09-19 10:38:32,530 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c029b299e/3eceab5b250c458986ad007911c34676 [2018-09-19 10:38:32,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 10:38:32,545 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-19 10:38:32,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 10:38:32,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 10:38:32,557 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 10:38:32,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 10:38:32" (1/1) ... [2018-09-19 10:38:32,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c40084a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:32, skipping insertion in model container [2018-09-19 10:38:32,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 10:38:32" (1/1) ... [2018-09-19 10:38:32,576 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 10:38:33,197 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 10:38:33,217 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 10:38:33,376 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 10:38:33,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:33 WrapperNode [2018-09-19 10:38:33,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 10:38:33,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-19 10:38:33,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-19 10:38:33,432 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-19 10:38:33,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:33" (1/1) ... [2018-09-19 10:38:33,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:33" (1/1) ... [2018-09-19 10:38:33,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-19 10:38:33,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 10:38:33,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 10:38:33,594 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 10:38:33,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:33" (1/1) ... [2018-09-19 10:38:33,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:33" (1/1) ... [2018-09-19 10:38:33,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:33" (1/1) ... [2018-09-19 10:38:33,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:33" (1/1) ... [2018-09-19 10:38:33,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:33" (1/1) ... [2018-09-19 10:38:33,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:33" (1/1) ... [2018-09-19 10:38:33,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:33" (1/1) ... [2018-09-19 10:38:33,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 10:38:33,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 10:38:33,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 10:38:33,934 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 10:38:33,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:33" (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 [2018-09-19 10:38:34,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 10:38:34,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 10:38:34,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-19 10:38:34,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-19 10:38:34,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 10:38:34,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 10:38:34,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 10:38:34,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 10:38:37,802 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 10:38:37,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 10:38:37 BoogieIcfgContainer [2018-09-19 10:38:37,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 10:38:37,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 10:38:37,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 10:38:37,809 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 10:38:37,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 10:38:32" (1/3) ... [2018-09-19 10:38:37,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66951f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 10:38:37, skipping insertion in model container [2018-09-19 10:38:37,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 10:38:33" (2/3) ... [2018-09-19 10:38:37,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66951f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 10:38:37, skipping insertion in model container [2018-09-19 10:38:37,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 10:38:37" (3/3) ... [2018-09-19 10:38:37,813 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label01_true-unreach-call_false-termination.c [2018-09-19 10:38:37,824 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 10:38:37,838 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 10:38:37,895 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 10:38:37,896 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 10:38:37,897 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 10:38:37,897 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 10:38:37,897 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 10:38:37,897 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 10:38:37,897 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 10:38:37,898 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 10:38:37,898 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 10:38:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-19 10:38:37,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-19 10:38:37,936 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:38:37,937 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] [2018-09-19 10:38:37,939 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:38:37,944 INFO L82 PathProgramCache]: Analyzing trace with hash 105664553, now seen corresponding path program 1 times [2018-09-19 10:38:37,947 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:38:37,948 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 62 with the following transitions: [2018-09-19 10:38:37,951 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], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [952], [956], [962], [966], [973], [974], [975], [977] [2018-09-19 10:38:38,023 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:38:38,023 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:38:39,428 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:38:39,430 INFO L272 AbstractInterpreter]: Visited 60 different actions 60 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-09-19 10:38:39,445 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:38:40,089 INFO L232 lantSequenceWeakener]: Weakened 59 states. On average, predicates are now at 80.71% of their original sizes. [2018-09-19 10:38:40,090 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:38:40,390 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:38:40,392 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:38:40,393 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-19 10:38:40,393 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:38:40,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 10:38:40,409 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 10:38:40,410 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 10:38:40,413 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 6 states. [2018-09-19 10:38:45,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:38:45,397 INFO L93 Difference]: Finished difference Result 693 states and 1229 transitions. [2018-09-19 10:38:45,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-19 10:38:45,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2018-09-19 10:38:45,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:38:45,425 INFO L225 Difference]: With dead ends: 693 [2018-09-19 10:38:45,425 INFO L226 Difference]: Without dead ends: 436 [2018-09-19 10:38:45,433 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-19 10:38:45,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2018-09-19 10:38:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 434. [2018-09-19 10:38:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-19 10:38:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 615 transitions. [2018-09-19 10:38:45,515 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 615 transitions. Word has length 61 [2018-09-19 10:38:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:38:45,516 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 615 transitions. [2018-09-19 10:38:45,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 10:38:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 615 transitions. [2018-09-19 10:38:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-19 10:38:45,524 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:38:45,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 10:38:45,525 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:38:45,526 INFO L82 PathProgramCache]: Analyzing trace with hash -789821893, now seen corresponding path program 1 times [2018-09-19 10:38:45,526 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:38:45,526 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 147 with the following transitions: [2018-09-19 10:38:45,527 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], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [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], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-19 10:38:45,537 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:38:45,538 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:38:49,962 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:38:49,963 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. [2018-09-19 10:38:49,997 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:38:50,931 INFO L232 lantSequenceWeakener]: Weakened 144 states. On average, predicates are now at 78.74% of their original sizes. [2018-09-19 10:38:50,931 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:38:51,620 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:38:51,621 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:38:51,621 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 10:38:51,621 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:38:51,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 10:38:51,623 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 10:38:51,623 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-19 10:38:51,623 INFO L87 Difference]: Start difference. First operand 434 states and 615 transitions. Second operand 14 states. [2018-09-19 10:39:01,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:39:01,670 INFO L93 Difference]: Finished difference Result 1340 states and 2335 transitions. [2018-09-19 10:39:01,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-19 10:39:01,671 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 146 [2018-09-19 10:39:01,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:39:01,679 INFO L225 Difference]: With dead ends: 1340 [2018-09-19 10:39:01,679 INFO L226 Difference]: Without dead ends: 1095 [2018-09-19 10:39:01,683 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 158 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2018-09-19 10:39:01,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-09-19 10:39:01,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 850. [2018-09-19 10:39:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2018-09-19 10:39:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1058 transitions. [2018-09-19 10:39:01,736 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1058 transitions. Word has length 146 [2018-09-19 10:39:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:39:01,737 INFO L480 AbstractCegarLoop]: Abstraction has 850 states and 1058 transitions. [2018-09-19 10:39:01,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 10:39:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1058 transitions. [2018-09-19 10:39:01,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-09-19 10:39:01,743 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:39:01,743 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, 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] [2018-09-19 10:39:01,743 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:39:01,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1883768817, now seen corresponding path program 1 times [2018-09-19 10:39:01,744 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:39:01,744 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2018-09-19 10:39:01,745 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], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [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], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-19 10:39:01,751 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:39:01,751 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:39:07,534 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:39:07,534 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. [2018-09-19 10:39:07,538 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:39:08,493 INFO L232 lantSequenceWeakener]: Weakened 170 states. On average, predicates are now at 78.52% of their original sizes. [2018-09-19 10:39:08,493 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:39:09,202 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:39:09,202 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:39:09,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-19 10:39:09,203 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:39:09,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-19 10:39:09,203 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-19 10:39:09,204 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-19 10:39:09,204 INFO L87 Difference]: Start difference. First operand 850 states and 1058 transitions. Second operand 11 states. [2018-09-19 10:39:14,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:39:14,346 INFO L93 Difference]: Finished difference Result 1283 states and 1842 transitions. [2018-09-19 10:39:14,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-19 10:39:14,347 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2018-09-19 10:39:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:39:14,358 INFO L225 Difference]: With dead ends: 1283 [2018-09-19 10:39:14,359 INFO L226 Difference]: Without dead ends: 1038 [2018-09-19 10:39:14,361 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 179 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-09-19 10:39:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2018-09-19 10:39:14,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1035. [2018-09-19 10:39:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2018-09-19 10:39:14,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1256 transitions. [2018-09-19 10:39:14,405 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1256 transitions. Word has length 172 [2018-09-19 10:39:14,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:39:14,406 INFO L480 AbstractCegarLoop]: Abstraction has 1035 states and 1256 transitions. [2018-09-19 10:39:14,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-19 10:39:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1256 transitions. [2018-09-19 10:39:14,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-09-19 10:39:14,424 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:39:14,424 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 10:39:14,426 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:39:14,426 INFO L82 PathProgramCache]: Analyzing trace with hash 877671357, now seen corresponding path program 1 times [2018-09-19 10:39:14,426 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:39:14,427 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-09-19 10:39:14,427 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], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [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], [554], [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], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-19 10:39:14,440 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:39:14,440 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:39:23,762 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:39:23,763 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. [2018-09-19 10:39:23,768 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:39:24,980 INFO L232 lantSequenceWeakener]: Weakened 255 states. On average, predicates are now at 78.14% of their original sizes. [2018-09-19 10:39:24,980 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:39:25,541 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:39:25,541 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:39:25,541 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-19 10:39:25,542 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:39:25,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-19 10:39:25,543 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-19 10:39:25,543 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-09-19 10:39:25,544 INFO L87 Difference]: Start difference. First operand 1035 states and 1256 transitions. Second operand 16 states. [2018-09-19 10:39:36,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:39:36,294 INFO L93 Difference]: Finished difference Result 2673 states and 3868 transitions. [2018-09-19 10:39:36,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-19 10:39:36,295 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 257 [2018-09-19 10:39:36,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:39:36,305 INFO L225 Difference]: With dead ends: 2673 [2018-09-19 10:39:36,305 INFO L226 Difference]: Without dead ends: 2012 [2018-09-19 10:39:36,309 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 275 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2018-09-19 10:39:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2018-09-19 10:39:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 1652. [2018-09-19 10:39:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2018-09-19 10:39:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1949 transitions. [2018-09-19 10:39:36,364 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1949 transitions. Word has length 257 [2018-09-19 10:39:36,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:39:36,365 INFO L480 AbstractCegarLoop]: Abstraction has 1652 states and 1949 transitions. [2018-09-19 10:39:36,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-19 10:39:36,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1949 transitions. [2018-09-19 10:39:36,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-09-19 10:39:36,371 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:39:36,372 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-19 10:39:36,372 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:39:36,372 INFO L82 PathProgramCache]: Analyzing trace with hash -590191430, now seen corresponding path program 1 times [2018-09-19 10:39:36,373 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:39:36,373 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 283 with the following transitions: [2018-09-19 10:39:36,373 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], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [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], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-19 10:39:36,386 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:39:36,388 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:39:42,066 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:39:50,963 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:39:50,963 INFO L272 AbstractInterpreter]: Visited 119 different actions 465 times. Merged at 7 different actions 22 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 10:39:50,997 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:39:52,426 INFO L232 lantSequenceWeakener]: Weakened 280 states. On average, predicates are now at 78.06% of their original sizes. [2018-09-19 10:39:52,427 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:39:53,264 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:39:53,264 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:39:53,265 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 10:39:53,265 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:39:53,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 10:39:53,266 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 10:39:53,266 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 10:39:53,266 INFO L87 Difference]: Start difference. First operand 1652 states and 1949 transitions. Second operand 10 states. [2018-09-19 10:40:11,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:40:11,093 INFO L93 Difference]: Finished difference Result 2091 states and 2739 transitions. [2018-09-19 10:40:11,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 10:40:11,094 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 282 [2018-09-19 10:40:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:40:11,108 INFO L225 Difference]: With dead ends: 2091 [2018-09-19 10:40:11,109 INFO L226 Difference]: Without dead ends: 1846 [2018-09-19 10:40:11,111 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 289 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 10:40:11,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2018-09-19 10:40:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1839. [2018-09-19 10:40:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1839 states. [2018-09-19 10:40:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2167 transitions. [2018-09-19 10:40:11,169 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2167 transitions. Word has length 282 [2018-09-19 10:40:11,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:40:11,170 INFO L480 AbstractCegarLoop]: Abstraction has 1839 states and 2167 transitions. [2018-09-19 10:40:11,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 10:40:11,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2167 transitions. [2018-09-19 10:40:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-09-19 10:40:11,179 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:40:11,179 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 10:40:11,180 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:40:11,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1510155237, now seen corresponding path program 1 times [2018-09-19 10:40:11,180 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:40:11,180 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 361 with the following transitions: [2018-09-19 10:40:11,181 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], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [526], [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], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-19 10:40:11,186 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:40:11,186 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:40:16,006 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:40:31,839 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:40:31,839 INFO L272 AbstractInterpreter]: Visited 120 different actions 709 times. Merged at 8 different actions 44 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 10:40:31,846 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:40:33,413 INFO L232 lantSequenceWeakener]: Weakened 358 states. On average, predicates are now at 77.92% of their original sizes. [2018-09-19 10:40:33,413 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:40:33,798 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:40:33,799 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:40:33,799 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 10:40:33,799 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:40:33,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 10:40:33,800 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 10:40:33,801 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-09-19 10:40:33,802 INFO L87 Difference]: Start difference. First operand 1839 states and 2167 transitions. Second operand 14 states. [2018-09-19 10:40:45,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:40:45,267 INFO L93 Difference]: Finished difference Result 2871 states and 3949 transitions. [2018-09-19 10:40:45,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-19 10:40:45,268 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 360 [2018-09-19 10:40:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:40:45,278 INFO L225 Difference]: With dead ends: 2871 [2018-09-19 10:40:45,279 INFO L226 Difference]: Without dead ends: 2439 [2018-09-19 10:40:45,282 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 379 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2018-09-19 10:40:45,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2018-09-19 10:40:45,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2046. [2018-09-19 10:40:45,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2046 states. [2018-09-19 10:40:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 2424 transitions. [2018-09-19 10:40:45,346 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 2424 transitions. Word has length 360 [2018-09-19 10:40:45,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:40:45,347 INFO L480 AbstractCegarLoop]: Abstraction has 2046 states and 2424 transitions. [2018-09-19 10:40:45,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 10:40:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 2424 transitions. [2018-09-19 10:40:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-09-19 10:40:45,356 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:40:45,357 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 10:40:45,357 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:40:45,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1715691475, now seen corresponding path program 1 times [2018-09-19 10:40:45,358 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:40:45,358 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 365 with the following transitions: [2018-09-19 10:40:45,358 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], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [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], [542], [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], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-19 10:40:45,361 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:40:45,361 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:40:50,414 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:41:12,417 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:41:12,418 INFO L272 AbstractInterpreter]: Visited 120 different actions 945 times. Merged at 8 different actions 62 times. Widened at 1 different actions 3 times. Found 14 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 10:41:12,436 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:41:13,921 INFO L232 lantSequenceWeakener]: Weakened 362 states. On average, predicates are now at 77.91% of their original sizes. [2018-09-19 10:41:13,921 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:41:14,150 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:41:14,150 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:41:14,151 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-19 10:41:14,151 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:41:14,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-19 10:41:14,151 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-19 10:41:14,152 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-19 10:41:14,152 INFO L87 Difference]: Start difference. First operand 2046 states and 2424 transitions. Second operand 10 states. [2018-09-19 10:41:19,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:41:19,538 INFO L93 Difference]: Finished difference Result 2880 states and 3695 transitions. [2018-09-19 10:41:19,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 10:41:19,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 364 [2018-09-19 10:41:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:41:19,550 INFO L225 Difference]: With dead ends: 2880 [2018-09-19 10:41:19,550 INFO L226 Difference]: Without dead ends: 2241 [2018-09-19 10:41:19,553 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 371 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-19 10:41:19,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2018-09-19 10:41:19,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2231. [2018-09-19 10:41:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2231 states. [2018-09-19 10:41:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2642 transitions. [2018-09-19 10:41:19,619 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2642 transitions. Word has length 364 [2018-09-19 10:41:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:41:19,620 INFO L480 AbstractCegarLoop]: Abstraction has 2231 states and 2642 transitions. [2018-09-19 10:41:19,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-19 10:41:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2642 transitions. [2018-09-19 10:41:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-09-19 10:41:19,627 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:41:19,628 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 10:41:19,628 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:41:19,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1782969906, now seen corresponding path program 1 times [2018-09-19 10:41:19,628 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:41:19,629 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 386 with the following transitions: [2018-09-19 10:41:19,629 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], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [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], [626], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-19 10:41:19,632 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:41:19,632 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:41:24,675 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:41:40,371 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:41:40,371 INFO L272 AbstractInterpreter]: Visited 120 different actions 709 times. Merged at 8 different actions 44 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 10:41:40,378 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:41:42,045 INFO L232 lantSequenceWeakener]: Weakened 383 states. On average, predicates are now at 77.87% of their original sizes. [2018-09-19 10:41:42,045 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:41:42,461 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:41:42,461 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:41:42,462 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 10:41:42,462 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:41:42,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 10:41:42,463 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 10:41:42,463 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-09-19 10:41:42,464 INFO L87 Difference]: Start difference. First operand 2231 states and 2642 transitions. Second operand 14 states. [2018-09-19 10:41:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 10:41:53,506 INFO L93 Difference]: Finished difference Result 3661 states and 4914 transitions. [2018-09-19 10:41:53,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-19 10:41:53,507 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 385 [2018-09-19 10:41:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 10:41:53,518 INFO L225 Difference]: With dead ends: 3661 [2018-09-19 10:41:53,518 INFO L226 Difference]: Without dead ends: 2837 [2018-09-19 10:41:53,521 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 404 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2018-09-19 10:41:53,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2018-09-19 10:41:53,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 2442. [2018-09-19 10:41:53,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2442 states. [2018-09-19 10:41:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 2905 transitions. [2018-09-19 10:41:53,592 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 2905 transitions. Word has length 385 [2018-09-19 10:41:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 10:41:53,593 INFO L480 AbstractCegarLoop]: Abstraction has 2442 states and 2905 transitions. [2018-09-19 10:41:53,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-19 10:41:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 2905 transitions. [2018-09-19 10:41:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-09-19 10:41:53,601 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 10:41:53,602 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 10:41:53,602 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 10:41:53,602 INFO L82 PathProgramCache]: Analyzing trace with hash 875639448, now seen corresponding path program 1 times [2018-09-19 10:41:53,603 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-19 10:41:53,603 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 443 with the following transitions: [2018-09-19 10:41:53,603 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], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [526], [527], [531], [535], [539], [542], [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], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-09-19 10:41:53,606 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-19 10:41:53,606 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=1) [2018-09-19 10:41:58,403 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-19 10:42:28,969 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-19 10:42:28,969 INFO L272 AbstractInterpreter]: Visited 121 different actions 1206 times. Merged at 9 different actions 95 times. Widened at 1 different actions 5 times. Found 26 fixpoints after 2 different actions. Largest state had 24 variables. [2018-09-19 10:42:28,977 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-19 10:42:30,678 INFO L232 lantSequenceWeakener]: Weakened 440 states. On average, predicates are now at 77.82% of their original sizes. [2018-09-19 10:42:30,679 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-19 10:42:31,094 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-19 10:42:31,094 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 10:42:31,095 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-19 10:42:31,095 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-19 10:42:31,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-19 10:42:31,096 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-19 10:42:31,096 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-09-19 10:42:31,097 INFO L87 Difference]: Start difference. First operand 2442 states and 2905 transitions. Second operand 14 states. Received shutdown request... [2018-09-19 10:42:39,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-19 10:42:39,038 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 10:42:39,045 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 10:42:39,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 10:42:39 BoogieIcfgContainer [2018-09-19 10:42:39,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 10:42:39,046 INFO L168 Benchmark]: Toolchain (without parser) took 246503.62 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -459.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-19 10:42:39,048 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 10:42:39,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 884.60 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-19 10:42:39,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 161.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 10:42:39,050 INFO L168 Benchmark]: Boogie Preprocessor took 339.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -848.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. [2018-09-19 10:42:39,051 INFO L168 Benchmark]: RCFGBuilder took 3869.42 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: 130.1 MB). Peak memory consumption was 130.1 MB. Max. memory is 7.1 GB. [2018-09-19 10:42:39,052 INFO L168 Benchmark]: TraceAbstraction took 241240.73 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 195.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-19 10:42:39,056 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 884.60 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 161.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 339.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -848.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3869.42 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: 130.1 MB). Peak memory consumption was 130.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241240.73 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 195.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 166]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 166). Cancelled while BasicCegarLoop was constructing difference of abstraction (2442states) and FLOYD_HOARE automaton (currently 26 states, 14 states before enhancement), while ReachableStatesComputation was computing reachable states (2536 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 241.1s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 84.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1941 SDtfs, 15227 SDslu, 3060 SDs, 0 SdLazy, 21372 SolverSat, 4124 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.5s Time, PredicateUnifierStatistics: 18 DeclaredPredicates, 2573 GetRequests, 2369 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2442occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 139.5s AbstIntTime, 9 AbstIntIterations, 9 AbstIntStrong, 0.9955784649249662 AbsIntWeakeningRatio, 0.0975609756097561 AbsIntAvgWeakeningVarsNumRemoved, 905.3573170731707 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 1415 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/Problem14_label01_true-unreach-call_false-termination.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-19_10-42-39-070.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label01_true-unreach-call_false-termination.c_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-19_10-42-39-070.csv Completed graceful shutdown